Service and Parts Manual
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Biltmore Classic
Concept L/R Classic
Dental
Chair
Service and
Parts Manual
Serial Number Prefixes:
CP, PB & V
Biltmore Clas.
Concept L/R
Classic
NOTE:
Sterling Grey painted parts
are no longer available.
Check manual and use
Pebble Grey painted parts
if available.
FOR USE BY MIDMARK
TRAINED TECHNICIANS ONLY
SF-1606
Style B
Part No. 004-0252-00 (12/29/2016)
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TABLE OF CONTENTS
TABLE OF CONTENTS
Section/Paragraph................................................Page
IMPORTANT INSTRUCTIONS
General Safety Instructions ......................................... iii
Safety Alert Symbols ................................................... iii
Warranty Instructions ................................................. iii
Section/Paragraph ............................................... Page
4.10 Base Up & Base Down Limit Switches
Removal.................................................. 4-15
Installation............................................... 4-15
Adjustment.............................................. 4-15
4.11 Base Up Program Limit Switch
Removal.................................................. 4-17
Installation............................................... 4-17
4.12 Back Up Limit Switch
Removal.................................................. 4-18
Installation............................................... 4-18
Adjustment.............................................. 4-18
4.13 Back Down Program Limit Switch
Removal.................................................. 4-19
Installation............................................... 4-19
Adjustment.............................................. 4-19
4.14 Safety Bail Limit Switches
Removal.................................................. 4-20
Installation............................................... 4-21
4.15 Membrane Switch Panel
Removal.................................................. 4-22
Installation............................................... 4-22
4.16 Manual Footswitch
Removal.................................................. 4-22
Installation............................................... 4-22
4.17 Auto Exit / Operate Footswitch
Removal.................................................. 4-23
Installation............................................... 4-23
4.18 Rotational Brake
Removal.................................................. 4-24
Installation............................................... 4-24
Adjustment.............................................. 4-25
4.19 Headrest
Adjustment.............................................. 4-26
SECTION I GENERAL INFORMATION
1.1 Scope of Manual .......................................... 1-1
1.2 How to Use Manual ...................................... 1-1
1.3 Description Of Chair ..................................... 1-1
1.4 Standard Torque Specifications.................... 1-6
1.5 Specifications ............................................... 1-6
1.6 Parts Replacement Ordering........................ 1-8
1.7 Special Tools ................................................ 1-8
SECTION II TESTING AND TROUBLESHOOTING
2.1 Operational Test (See Figure 2-1) ................ 2-1
2.2 Troubleshooting Procedures......................... 2-4
SECTION III SCHEDULED MAINTENANCE
3.1 Scheduled Maintenance ............................. 3-1
SECTION IV MAINTENANCE/SERVICE
INSTRUCTIONS
4.1 Introduction................................................... 4-1
4.2 Upholstery
Removal .................................................... 4-1
Installation ................................................. 4-1
4.3 Base Capacitor
Removal .................................................... 4-2
Installation ................................................. 4-2
4.4 Base Motor
Removal .................................................... 4-3
Installation ................................................. 4-6
4.5 Base Motor Worm Gear
Removal .................................................... 4-8
Installation ................................................. 4-8
4.6 Base Motor Trunnion
Removal .................................................... 4-9
Disassembly.............................................. 4-9
Assembly................................................... 4-9
Installation ................................................. 4-9
4.7 Back Motor
Removal .................................................. 4-10
Installation ............................................... 4-11
4.8 Back Motor Capacitor
Removal .................................................. 4-13
Installation ............................................... 4-13
4.9 P.C. Board
Removal .................................................. 4-14
Installation ............................................... 4-14
SECTION V SCHEMATICS AND DIAGRAMS
5.1 Electrical Schematics /
Wiring Diagrams ..................................... 5-1
SECTION VI PARTS LIST
6.1 Introduction ................................................ 6-1
6.2 Description Of Columns ............................... 6-1
6.3 Torque Specifications And Important
Assembly Notes ........................................ 6-1
Pictorial Index [Sterling Grey]....................... 6-2
Pictorial Index [Pebble Grey]........................ 6-3
Upholstery Components (Vacuum Form)
[Sterling Grey] .............................................. 6-4
Upholstery Components (Vacuum Form)
[Pebble Grey] ............................................... 6-5
(*) Indicates that there has been a serial number break for the illustration
and that there are additional point page(s) following the original page.
© Midmark Corporation 1999 SF-1606 Rev. 3/03
Page i
Printed in U.S.A.
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TABLE OF CONTENTS
Upholstery Components (Plush)
[Sterling Grey] .............................................. 6-6
Upholstery Components (Plush)
[Pebble Grey]................................................ 6-7
Covers [Sterling Grey] .................................. 6-8
Covers [Pebble Grey] ................................... 6-9
Seat Components [Sterling Grey]............... 6-10
Seat Components [Pebble Grey] ................ 6-11
Back Components [Sterling Grey] .............. 6-12
Back Components [Pebble Grey] ............... 6-13
Top Electrical Components [Sterling Grey]. 6-14
Top Electrical Components [Pebble Grey] .. 6-15
Top Motor Assembly ................................... 6-16
Rotational Base Components (Biltmore Classic)
[Sterling Grey] ............................................ 6-17
Rotational Base Components (Biltmore Classic)
[Pebble Grey].............................................6-18*
Non-Rotational Base Components
(Concept L/R Classic [Sterling Grey].......... 6-19
Non-Rotational Base Components
(Concept L/R Classic [Pebble Grey] ..........6-20*
Base Electrical Components .....................6-21*
© Midmark Corporation 1999 SF-1606 Rev. 5/10
Base Motor Assembly ................................ 6-22
Footswitch [Sterling Grey] ......................... 6-23
Footswitch [Pebble Grey] .......................... 6-24
Umbilicals (Concept L/R Classic)
[Sterling Grey] ............................................ 6-25
Umbilicals (Concept L/R Classic)
[Pebble Grey] ............................................. 6-26
Double Articulating Headrest
[Sterling Grey]......................................... 6-27
Double Articulating Headrest
[Pebble Grey] .......................................... 6-28
Single Articulating Headrest
[Sterling Grey]......................................... 6-29
Single Articulating Headrest
[Pebble Grey] .......................................... 6-30
IV Armboard [Sterling Grey]....................... 6-31
IV Armboard [Pebble Grey] ........................ 6-32
L/R Light Bracket Components .................. 6-33
COMMENTS ............................................................. 7-1
FAX ORDER FORM.................................................. 7-2
Page ii
Printed in U.S.A.
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TABLE OF CONTENTS
General Safety Instructions
Safety First: The primary concern of Midmark Corporation is that this chair is maintained with the safety
of the patient and staff in mind. To assure that services
and repairs are completed safely and correctly, proceed
as follows:
(1) Read this entire manual before performing any
services or repairs on this chair.
(2) Be sure you understand instructions contained
in this manual before attempting to service or
repair chair.
Safety Alert Symbols
Throughout this manual are safety alert symbols that
call attention to particular procedures. These items are
used as follows:
NOTE
A NOTE is used to amplify an operating procedure,
practice or condition.
Warranty Instructions
Refer to Midmark “Limited Warranty” printed in the
Installation and Operation Manual for warranty information. Failure to follow guidelines listed below will void
the warranty and/or render the Biltmore Classic or Concept L/R Dental Chair unsafe for operation.
•
•
•
DANGER
In event of a malfunction, do not attempt to use
dental chair until necessary repairs have been
made.
Do not attempt to disassemble chair, replace malfunctioning or damaged components, or perform
adjustments unless you are one of Midmark’s
authorized service technicians.
Do not substitute parts of another manufacturer
when replacing inoperative or damaged components. Use only Midmark replacement parts.
A DANGER is used for an imminently
hazardous operating procedure, practice, or condition which, if not correctly followed,
will result in loss of life or serious personal
injury.
WARNING
A WARNING is used for a potentially
hazardous operating procedure, practice, or condition which, if not correctly followed,
could result in loss of life or serious personal
injury.
CAUTION
A CAUTION is used for a potentially hazardous operating procedure, practice, or
condition which, if not correctly followed, could result
in minor or moderate injury. It may also be used to
alert against unsafe practices.
EQUIPMENT ALERT
An EQUIPMENT ALERT is used for an
imminently or potentially hazardous operating procedure, practice, or condition which, if not
correctly followed, will or could result in serious, moderate, or minor damage to unit.
© Midmark Corporation 1999 SF-1606 Rev. 3/03
Page iii
Printed in U.S.A.
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SECTION I
GENERAL INFORMATION
SECTION I
GENERAL INFORMATION
1.1
Scope of Manual
1.3
This manual contains detailed troubleshooting, scheduled maintenance, maintenance, and service instructions for the Biltmore Classic and the Concept L/R
Dental Chair. This manual is intended to be used by
Midmark’s authorized service technicians.
1.2
A. General Description (See Figure 1-1).
The Biltmore Classic and the Concept L/R Chair are
dental operating chairs designed for the general dentistry market. Positions of Chair are adjustable thru use
of electromechanical motors. The operator can initiate
movement using one of two chair mounted membrane
touch pads (Biltmore Classic only), the foot control or
the optional hand control (Concept L/R only).
How to Use Manual
A. Manual Use When Performing Scheduled Maintenance.
B. Major Serviceable Components (See Figure 1-1).
(1) Perform inspections and services listed in
Scheduled Maintenance Chart (Refer to
para 3.1).
Membrane Touch Pads (Biltmore Classic only)
(1, Figure 1-1)
(2) If a component is discovered to be faulty or out
of adjustment, replace or adjust component in
accordance with maintenance / service instructions (Refer to para 4.1).
B. Manual Use When Unit Is Malfunctioning And
Cause Is Unknown.
(1) Perform an operational test on chair (Refer to
para 2.1).
(3) If a component is discovered to be faulty or out
of adjustment, replace or adjust component in
accordance with maintenance / service instructions (Refer to para 4.1).
C. Manual Use When Damaged Component Is Known.
© Midmark Corporation 1999 SF-1606 Rev. 3/03
A membrane touch pad assembly is located on both
sides of the chairback to allow operation of chair from
either side. The Automatic Operate / Exit switches (A)
are predetermined program settings and actuated by
depressing and releasing the appropriate switch. The
functions can be stopped by momentarily depressing
any switch on the touch pads or foot control.
Back Up, Back Down, Base Up, and Base Down
switches (B) must be depressed and held until desired
position is achieved.
Headrest Locking Assembly (2, Figure 1-1)
(2) Perform troubleshooting procedures listed in
Troubleshooting Guide (Refer to para 2.2).
(1) Replace or adjust component in accordance
with maintenance / service instructions (Refer
to para 4.1).
Description Of Dental Chair
Headrest height can be changed by pulling out or pushing in on headrest. Tension of headrest locking assembly is pre-set at factory but can be adjusted if required
(Refer to para 4.19).
Base Motor & Capacitor (3, Figure 1-1)
Base Motor controls the vertical movement of the chair
by a cantilevered action up 13” (33 cm) while moving
forward 4.5” (11.4 cm). Directional windings allow the
motor to run forward or backward depending on which
way power is applied to the windings. Base motor uses
a run capacitor, located on the mounting plate next to
the P.C. Board, to provide start and run power.
The motor is for intermittent operation. Continuous
operation will cause motor to overheat, causing internal
thermal overload to open, removing power from the
motor. Normal cool off period for thermal overload to
reset to closed position is 10 to 20 minutes.
Page 1-1
Printed in U.S.A.
SECTION I
GENERAL INFORMATION
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Figure 1-1. Component Location
© Midmark Corporation 1999 SF-1606
Page 1-2
Printed in U.S.A.
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SECTION I
GENERAL INFORMATION
Back Motor & Capacitor (4, Figure 1-1)
Base Up Program Limit Switch (8, Figure 1-1)
Back Motor controls the movement of the chairback
from a seated position (upright) to a reclined position
(supine). The directional windings allow the motor to run
forward or backward.
Back Motor uses a run capacitor, mounted on the motor,
to provide start and run power.
Two Internal limit switches in motor prevent it from
reaching its mechanical limits, damaging the motor. The
normally closed (N.C.) limit switches are factory set and
should not require any adjustments.
The motor is for intermittent operation. Continuous
operation will cause the motor to overheat, activating
the internal thermal overload, removing power from the
motor. Normal cool off period for the thermal overload
to reset is 10 to 20 minutes.
Base Up Program Limit Switch is a normally closed
(N.C.) switch that only works in conjunction with the
Auto Operate (Green) switch on Foot Control. The limit
switch is located on a bracket, on patient’s right side,
attached to upright housing assembly. After Auto Operate (Green) switch is depressed Base section begins to
move upward. During upward movement a program
switch cam is slowly rotating clockwise. The cam has a
high spot machined on it. When this high spot contacts
switch actuator of limit switch N.C. contacts open,
removing power from Base Motor, stopping upward
motion.
The program switch cam is adjustable to increase or
decrease height at which chair stops.
Base Down Limit Switch (9, Figure 1-1)
P.C. Board w/ Fuses (5, Figure 1-1)
The P.C. Board contains plug connectors, 12 VDC supply transformer for control circuitry, base and back
motor control relays, 10 amp line (115 VAC) input motor
fuse, 1/2 amp fuse for low voltage (12 VDC) circuitry.
Spare fuses (C) are located to the left of each operational fuse.
Back Up Limit Switch (6, Figure 1-1)
Back Up Limit Switch is a normally closed (N.C.) switch,
located on the seat frame of patient’s left side. It controls the amount Back section moves upright, to a
seated position, from reclined (supine) position. As
Back section moves upright, seat section is also moving
inward. When the spacer, located on patient’s left side
seat support, contacts the switch actuator on Back Up
Limit Switch it causes N.C. contacts to open, removing
power from Back Motor.
Back Down Program Limit Switch (7, Figure 1-1)
Back Down Program Limit Switch is a normally closed
(N.C.) switch that only works in conjunction with the
Auto Operate (Green) switch on Foot Control or on
membrane switch. The limit switch is located on a
bracket, on the patient’s right side, attached to the platform weldment.
After Auto Operate (Green) switch is depressed the
Back section begins to recline and seat section moves
forward. When the programming plate, located on
patient’s right side seat support, contacts the switch
actuator on Back Down Program Limit Switch it causes
N.C. contacts to open, removing power to Back Motor.
The programming plate is adjustable to increase or
decrease amount of recline on Back section.
© Midmark Corporation 1999 SF-1606
Base Down Limit Switch is a normally closed (N.C.)
switch located on the electrical connection plate, on
patient’s left side, attached to upright housing assembly.
It is located toward the outside, next to Base Up Limit
Switch.
Base Down Limit Switch works in conjunction with Auto
Exit (Yellow) foot or membrane switch and / or with
Base Down membrane or foot switch. As chair
descends, a cam, located on pivot pin in upright housing rotates. When the cam contacts switch actuator on
limit switch, it opens normally closed (N.C.) contacts
removing power from Base Motor stopping chair.
Base Up Limit Switch (10, Figure 1-1)
Base Up Limit Switch is a normally closed (N.C.) switch
located on electrical connection plate, on patient’s left
side, attached to upright housing assembly. It is located
toward the inside, next to Base Down Limit Switch.
Base Up Limit Switch works in conjunction with Auto
Operate (Green) foot or membrane switch and / or with
the Base Up membrane or foot switch. As chair elevates, a cam, located on pivot pin in upright housing
rotates. When cam contacts switch actuator on limit
switch, it opens normally closed contacts, removing
power from Base Motor stopping chair.
Page 1-3
Printed in U.S.A.
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SECTION I
GENERAL INFORMATION
Safety Bail Limit Switches (11, Figure 1-1)
The two Safety Bail Limit Switches are normally closed
(N.C.) switches located on the parallel arms, on
patient’s right and left side.
The Safety Bail Limit Switches work in conjunction with
Auto Exit (Yellow) foot or membrane switch and / or with
Base Down membrane or foot switch. They have no
affect when running other functions.
During the chair’s descent, if bottom lift arm cover contacts an obstruction, cover will depress the switch actuator(s) of the Safety Bail Limit Switch(es) opening the
normally closed contacts, removing power from Base
Motor, stopping the descent. The Back Motor will continue to operate.
If the obstruction is removed, returning the switch(es) to
the N.C. position, the Base Motor will operate and the
chair will continue its descent.
Foot Switch (12, Figure 1-1)
The Foot Switch contains four, normally open switches
for operation of Back Up, Back Down, Base Up and
Base Down. When foot switch control pad (D) is moved
in direction of one or two of the switches the control pad
actuator operates the switch(es) closing normally open
contacts, providing power to either one or both motors
depending on the function(s) chosen. The control pad
must be held in the position to maintain operation.
A separate rocker switch, on the Foot Switch, with two
normally open contacts operate the Auto Operate
(Green) and Auto Exit (Yellow) functions. Pressing and
releasing either of the switches will close the contacts
on the switch and initiate the function. Pressing any
function during Auto operation will terminate the Auto
function.
Rotational Foot Lock (Biltmore Classic only)
(13, Figure 1-1)
The chair will rotate at its base 45° each way from center-line. To release the rotational lock, depress the left
side of the lever assembly and rotate the chair. When in
position, depress right side of lever to lock in position.
C. Theory of Operation (120 or 230 VAC Units) (See
Section V for wiring diagram, electrical schematics and pictorial layouts).
Electrical Power:
Line voltage is supplied to the chair’s PC circuit board
thru chair’s power cord and a terminal board. There is a
1/2 amp line input fuse on the PC circuit board which
protects the board’s circuitry from power spikes or
excessive current draw. A transformer on PC circuit
board reduces line voltage to 12 VDC. The 12 VDC
provides power to operate the circuitry on PC circuit
board, limit switches, membrane switch panel, and foot
control.
Operation of Membrane Switch Panel:
PC circuit board supplies 12 VDC to one side of each of
the normally open (N.O.) switches in membrane switch
panel. When the operator presses a membrane switch,
N.O. contacts for that switch are closed, completing a
circuit; this allows 12 VDC signal to return to PC circuit
board, activating the function the operator selected.
Operation of Foot Control:
PC circuit board supplies 12 VDC to common terminals
of four N.O. switches (BACK UP, BACK DOWN, BASE
UP, BASE DOWN) and N.O. AUTO EXIT / AUTO
OPERATE program switch. When the operator
depresses one of the switches, N.O. contacts for that
switch are closed, completing a circuit; this allows 12
VDC signal to return to circuit board, activating the function the operator selected.
Back Up Function Operation:
When operator depresses BACK UP switch on either
membrane switch panel or foot control, the N.O. switch
closes, allowing 12 VDC signal to return to PC circuit
board, enabling the function. When Back Up function is
enabled, PC circuit board energizes Back Up relay coil.
Line voltage is continuously supplied to one of the output contacts of the Back Up relay. So, when the N.O.
output contacts of the relay close, line voltage is applied
across windings of back motor causing it to run.
PC circuit board also monitors Back Up limit switch.
When not tripped, N.C. Back Up limit switch completes
a closed circuit, allowing a 12 VDC signal (supplied by
PC circuit board) to return to PC circuit board which
allows Back Up function to continue to run. When the
N.C. switch is tripped (indicating the back motor is at its
“up” limit), limit switch circuit opens, stopping 12 VDC
signal from returning to PC circuit board. PC board
then de-energizes Back Up relay, causing back motor to
stop.
© Midmark Corporation 1999 SF-1606 Rev. 3/03
Page 1-4
Printed in U.S.A.
SECTION I
GENERAL INFORMATION
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Back Down Function Operation:
When operator depresses BACK DOWN switch on
either membrane switch panel or foot control, the N.O.
switch closes, allowing 12 VDC signal to return to PC
circuit board, enabling the function. When Back Down
function is enabled, PC circuit board energizes Back
Down relay coil. Line voltage is continuously supplied
to one of the output contacts of the Back Down relay.
When N.O. output contacts of relay close, line voltage is
applied across windings of back motor causing it to run.
When back motor reaches its “down” limit, a N.C. limit
switch located internally within back motor opens, opening circuit and causing back motor to stop. When operator releases BACK DOWN switch, PC circuit board
then deenergizes Back Down relay.
Base Up Function Operation:
When operator depresses BASE UP switch on either
membrane switch panel or foot control, the N.O. switch
closes, allowing 12 VDC signal to return to PC circuit
board, enabling the function. When Base Up function is
enabled, PC circuit board energizes Base Up relay coil.
Line voltage is continuously supplied to one of the output contacts of Base Up relay. When N.O. output contacts of relay close, line voltage is applied to base motor
causing it to run.
PC circuit board also monitors Base Up limit switch.
When not tripped, N.C. Base Up limit switch completes
a closed circuit, allowing a 12 VDC signal (supplied by
PC board) to return to PC board which allows Base Up
function to continue to run. When N.C. limit switch is
tripped (indicating base motor is at its “up” limit), the
switch circuit opens, stopping 12 VDC signal from
returning to PC board. PC board then deenergizes
Base Up relay, causing base motor to stop.
Base Down Function Operation:
When the operator depresses BASE DOWN switch on
either membrane switch panel or foot control, N.O.
switch closes, allowing 12 VDC signal to return to PC
board, enabling the function. When Base Down function is enabled, PC circuit board energizes Base Down
relay coil. Line voltage is continuously supplied to one
side of output contacts of Base Down relay. When N.O.
output contacts of relay close, line voltage is applied to
base motor causing it to run.
PC board also monitors Base Down limit switch. When
not tripped, N.C. Base Down Limit Switch completes a
closed circuit, allowing a 12 VDC signal (supplied by PC
board) to return to PC board which allows Base Down
function to continue to run. When N.C. limit switch is
tripped (indicating base motor is at its “down” limit),
switch circuit opens, stopping 12 VDC signal from
© Midmark Corporation 1999 SF-1606
returning to PC board. PC board then deenergizes
Base Down relay, causing base motor to stop.
Auto Exit Function Operation:
When the operator depresses AUTO EXIT switch on
either membrane switch panel or foot control, N.O.
switch closes, allowing 12 VDC signal to return to PC
board, enabling the function. When Auto Exit function is
enabled, PC board energizes Base Down and Back Up
relay coils. Line voltage is continuously supplied to one
side of output contacts of the two relays. When N.O.
output contacts of the two relays close, line voltage is
applied to base and back motors causing them to run.
PC board also monitors Base Down and Back Up limit
switches. When not tripped, N.C. switches complete a
closed circuit, allowing a 12 VDC signal (supplied by PC
board) to return to PC board which allows Base Down
and Back Up functions to continue to run. When N.C.
switches are tripped (indicating motors are at “Exit”
position), the switch circuits open, stopping 12 VDC signals from returning to the PC board. PC board then
deenergizes Base Down and Back Up relays, causing
motors to stop.
Auto Operate Function Operation:
When the operator depresses AUTO OPERATE switch
on either membrane switch panel or foot control, N.O.
switch closes, allowing 12 VDC signal to return to the
PC board, enabling the function. When Auto Operate
function is enabled, PC board energizes Base Up and
Back Down relay coils. Line voltage is continuously
supplied to one side of output contacts of the two
relays. When N.O. output contacts of the two relays
close, line voltage is applied to base and back motors
causing them to run.
PC board also monitors Base Up Program limit switch
and Back Down Program limit switch. When not
tripped, N.C. switches complete a closed circuit, allowing a 12 VDC signal (supplied by the PC board) to
return to PC board which allows Base Up and Back
Down functions to continue to run. When N.C. limit
switches are tripped (indicating motors have reached
their manually programmed position - both of the limit
switch stops can be manually adjusted by the operator
to “program” a desired exam / procedure position), limit
switch circuits are opened stopping 12 VDC signals
from returning to PC board. The PC board then deenergizes Base Up and Back Down relays, causing motors
to stop.
Page 1-5
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SECTION I
GENERAL INFORMATION
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Safety Bail Limit Switches
During Base Down or Auto Exit modes, as chair is
descending, should bottom lift arm cover contact an
obstruction one or both normally closed (N.C.) Safety
Bail Limit Switches located beneath cover, will open
removing power from Base Motor, stopping descent.
When the obstacle is removed switch(es) will close,
energizing Base Motor, and chair will continue to
descend. The switches have no affect on rest of operations.
1.4
Standard Torque Specifications
The following standard torque specifications in
Table 1-1 apply to the hardware used on the unit unless
otherwise listed elsewhere in the service procedures or
parts illustrations:
Table 1-1. Torque Specifications
Hardware Size
Torque Values
#6 .............................. 11 to 21 inch-lbs. (1.2 to 2.3 N•M)
#8 .............................. 20 to 30 inch-lbs. (2.2 to 3.3 N•M)
#10 ............................ 32 to 42 inch-lbs. (3.6 to 4.8 N•M)
1/4 inch ..................... 75 to 85 inch-lbs. (8.5 to 9.6 N•M)
5/16 inch ...................18 to 22 ft.-lbs. (24.4 to 29.8 N•M)
3/8 inch .....................31 to 35 ft.-lbs. (42.0 to 47.5 N•M)
1/2 inch .....................50 to 60 ft.-lbs. (67.8 to 81.4 N•M)
1.5
Specifications
Factual data for the Biltmore Classic Dental Chair is
provided in Table 1-2. Also, see Figure 1-2.
Table 1-2. Specifications
Description
Data
Weight of a Unit:
Without Shipping Carton ................355 lbs (161.0 kg)
With Shipping Carton .....................367 lbs (166.5 kg)
Shipping Carton: ....... 42 in. "L" x 29 in. "W" x 35 in. "H"
(106.7 cm x 73.7 cm x 88.9 cm)
Dimensions (See Figure 1-2):
Chair Top Length ...........................71.5 in. (181.6 cm)
Chair Top Length
(headrest extended) ......................78.0 in. (198.1 cm)
Base .......................................... 24 in. “W” x 34 in. “L”
(61 cm x 86.4 cm)
Chair Top Width...............................25.5 in. (64.7 cm)
Overall Width...................................26.5 in. (67.3 cm)
Chair Adjustment:
Base ......................... 90° rotation (45° each way from
center-line) (max.)
Seat Height..............20.5 to 34.5 in. (52.0 to 87.6 cm)
Headrest Height .....59.5 to 68.5 in. (151.1 to 174 cm)
Weight Capacity (Maximum): .............325 lbs. (147.4 kg
Electrical Requirements: .................... 115 VAC Nominal
110-126 VAC, 50/60 HZ,
8.0 amp, single phase
© Midmark Corporation 1999 SF-1606
Page 1-6
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SECTION I
GENERAL INFORMATION
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230 VAC Nominal
220-252 VAC 50/60 HZ,
4.0 amp, single phase
Power Consumption: ....................115 VAC @ 8 amps =
920 Watts
230 VAC @ 4 amps =
920 Watts
Fuse Rating:
12 VDC Line Input Fuse ................ 0.5 amp, 250 VAC
5 x 20mm, Type Slo-Blo
115 VAC Motor Fuse.................... 10.0 amp, 250 VAC
5 x 20mm, Type Fast- acting
230 VAC Motor Fuse...................... 5.0 amp, 250 VAC
5 x 20mm, Type Fast-acting
78.0"
(198.1 cm)
71.5"
(181.6 cm)
NOTE: (*) Biltmore/Biltmore Classic Only
9.5"
(24.1 cm)
(*)
o
45
8.5"
(21.6 cm)
25.5"
(64.7 cm)
26.5"
(67.3 cm)
16.5"
(41.9 cm)
16"
(40.6 cm)
45
10.0"
(25.4 cm)
o
(*)
9"
(22.9 cm)
Baseplate
24" (61 cm) wide
x 34" (86.3 cm) long
Center line
of chair rotation
Base lift arm vertical travel:
approx. 13"(33.0 cm)
depending on limit switch settings
Center line
of chair rotation(*)
59.5"
(151.1 cm)
27.5"
15"
(38.1 cm)
14.5" (36.8 cm)
BASE LOW LIMIT
measured from
bottom of hip post
19.5"
(49.5 cm)
14.5"
(36.8 cm)
(69.9 cm)
26.5"
(67.3 cm)
BASE HIGH LIMIT
measured from
bottom of hip post
12.5"
14.5"
(36.8 cm)
17.0"
(43.2 cm)
(31.8 cm)
34"
(86.3 cm)
44.5"
(113.0 cm)
KA914601i
Figure 1-2. Dimensional Specifications
© Midmark Corporation 1999 SF-1606 Rev. 3/03
Page 1-7
Printed in U.S.A.
Return To Table Of Contents
SECTION I
GENERAL INFORMATION
1.6
Parts Replacement Ordering
(2) Determine installation date of chair and record
this data. Call Midmark (1-800 643-6275) and
ask for Technical Service Department. Please
have the Model and Serial Number of the
chair.
If a replacement part is required, order the part directly
from the factory as follows:
(1) Refer to Figure 1-3 to determine the location
of the model number and serial number of the
chair and record this data. Refer to the Parts
List to determine the item numbers of the parts,
part numbers of the parts, descriptions of the
parts, and quantities of parts needed and
record this data (Refer to para 6.1).
1.7
Special Tools
Table 1-3 lists all of the special tools needed to repair
the chair, how to obtain the special tools, and the purpose of each special tool.
NOTE
To assure expedient service and correct parts you
must have the correct Model and Serial Number of
the chair.
Model / SN
Location
Serial
Number
Figure 1-3. Model Number / Serial Number Location
Table 1-3. Special Tool List
Description of Special Tool
Manufacturer’s
Name / Address / Phone
Manufacturer’s
Part Number
Purpose of Special Tool
Multimeter *
Commercially Available
Any Type
Used to perform continuity and voltage checks.
Wood Support, 2” x 4” x 18”
(5 cm x 10.1 cm x 45.7 cm)
Qty. 2
Commercially Available
Any Type
Used to support chair top when base motor is
being removed.
Jumper wire with insulated clips Made up by technician
N/A
For jumpering various test points during troubleshooting.
Torque Wrench *
Any Type
Used to tighten nuts or screws to specified values.
Commercially Available
* Tool should be calibrated annually to ensure proper specifications are met.
© Midmark Corporation 1999 SF-1606 Rev. 8/08
Page 1-8
Printed in U.S.A.
Return To Table Of Contents
SECTION I
GENERAL INFORMATION
© Midmark Corporation 1999 SF-1606 3/06
Page 1-9
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
SECTION II
TESTING AND TROUBLESHOOTING
2.1
Operational Test (See Figure 2-1)
Range of Motion (±2°):
Back Up ............... up to 82° (above horizontal)
Back Down.......down to 14° (above horizontal)
See Table 1-2 and Figure 1-3 for maximum and
minimum heights.
In order to effectively diagnose a malfunction of chair, it
may be necessary to perform the following operational
test:
(3) Place a 325 lb. (147.4 kg.) weight on center of
seat section of chair.
WARNING
Refer to the Operator’s Manual for complete instructions on operating the
chair. Failure to do so could result in personal
injury.
Observe. Seat section should not drift downward under weight.
(4) Depress Base Up and Base Down buttons on
membrane switch panel.
NOTE
The Operational Test, for the most part, only
describes what should happen when chair is operated. If the chair does something other than
described, a problem has been discovered. Refer to
Troubleshooting Guide to determine cause of problem and its correction.
Observe. Base motor should not squeal or
make excessive noise when lifting weight.
Base motor should be able to lift weight. Movement should be steady.
(5) Remove weights from chair. Then, place a 100
lb. (45.4 kg.) weight on center of back section of
chair (with back section at approximately 45º
above horizontal).
WARNING
When performing various checks with
chair plug in and covers off use
extreme care to prevent accidental electrical
shock. Failure to comply could cause severe
injury.
(6) Depress Back Up and Back Down buttons on
membrane switch panel.
Observe. Back motor should not squeal or
make excessive noise when lifting weight.
Back motor should be able to lift weight. Movement should be steady.
(1) Plug chair power cord into a grounded, non-isolated, correctly polarized outlet, that has proper
voltage for chair.
(7) Remove weights from chair.
(2) Depress Back Up, Back Down, Base Up, and
Base Down buttons on membrane switch panel.
Observe. Chair should move in direction corresponding to button being depressed. No motor
should make excessive squealing noises.
Movement should be steady and should match
speed and range of motions listed below:
Chair Speeds (±3 second):
Back Up to Back Down...................15 seconds
Back Down to Back Up...................15 seconds
Base Up to Base Down ..................15 seconds
Base Down to Base Up ..................15 seconds
© Midmark Corporation 1999 SF-1606
(8) Run Back Up function all the way up and Base
Down function all the way down.
NOTE
Both Back Down Program and Base Up Program
limit switches are manually adjustable limit switches
which allow an operator to “manually program” where
chair will stop when using Auto Operate function.
Page 2-1
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
Auto Exit
Auto Operate
Back Up
Back Down
Base Up
Base Down
Auxiliary
Switch
Rotation Lock Lever
(Biltmore Classic Only)
Foot Switch
90
(Biltmore Classic Only)
KA917001i
Figure 2-1. Operational Test
© Midmark Corporation 1999 SF-1606 Rev. 3/03
Page 2-2
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
(14) Rotate armrests out of way to side. Return
each armrest back to normal position.
(9) Depress Auto Operate button on membrane
switch panel.
Observe. Back Down function should run until
its limit switch is tripped (Back Down Program
limit switch), stopping it.
Base Up function should run until its limit switch
is tripped (Base Up Program limit switch), stopping it.
Check both limit switches to verify that they
were tripped.
(10) Depress Auto Exit button on membrane switch
panel.
Observe. Back Up function should run until its
limit switch trips (Back Up limit switch), stopping
it.
Base Down function should run until its limit
switch trips (Base Down limit switch), stopping
it.
Check both limit switches to verify that they
were tripped.
(11) Slide headrest in and out stopping at different
positions. Push gently against headrest at
each position.
Observe. Headrest should not require excessive force to position. When in a position,
headrest should not move when a slight pressure is applied.
(12) Rotate chair top until it hits a stop. Then rotate
chair top in opposite direction until it hits a stop.
Observe. Armrests should be able to be
rotated out of way easily and should not require
excessive force. When armrests are returned
they should detente into their normal position
without excessive side-to-side play.
(15) Depress Back Up, Back Down, Base Up, Base
Down, Auto Exit, and Auto Operate buttons on
foot control.
Observe. When each of the buttons on foot
control are depressed, appropriate function
should activate.
(16) Depress Auto Exit (Yellow) and /or Base Down
membrane or foot switch. As chair descends,
push upward on bottom lift arm cover until one
or both of the Safety Bail Limit switches operate.
Observe. When bottom lift arm cover contacts
and operates Safety Bail Limit switch(es) chair
should immediately stop its descent. Releasing
bottom lift arm cover, returning Safety Bail Limit
switch(es) to normally closed position, chair
should continue to descend.
When in Auto Exit, after Back Section reaches
its upward program position, returning Safety
Bail switch(es) to the normally closed (NC)
position will not cause Base to descend. Operating Base Down membrane or foot switch will
cause chair to descend.
Observe. Chair top should rotate smoothly and
easily; not requiring excessive force. The chair
top should be able to be rotated from stop to
stop which is 90° or 45° in each direction from
centerline of chair.
(13) Depress Rotation Lock lever to locked position. Attempt to rotate chair top.
Observe. Chair top should not be able to be
rotated when Rotation Lock lever is engaged.
© Midmark Corporation 1999 SF-1606
Page 2-3
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
2.2
Troubleshooting Procedures
Table 2-1 is a Troubleshooting Guide which is used to
determine causes of malfunctions. Figure 2-2, is a pictorial diagrams that will assist in the troubleshooting
procedures. Also refer to diagrams in Section V.
Problem
Symptom
Chair will not operate when
any function is selected
(from any of the membrane
switch panels or foot control switches).
When a membrane switch
panel or foot control switch
is pressed, nothing happens and relays cannot be
heard energizing).
No actions can be initiated
from membrane switch
panel and foot control.
Chair has power, but no
functions can be initiated
from membrane switch
panel and foot control.
© Midmark Corporation 1999 SF-1606
WARNING
Use extreme caution when testing components with chair plug into outlet.
Line voltage (115 or 230 VAC) is present. Failure
to comply could result in personal injury.
Probable Cause
Check
Correction
Power cord is not plugged
into facility wall outlet.
Check to see if power
cord is plugged in.
Plug power cord into facility
wall outlet.
Facility circuit breaker providing power to chair is
tripped.
Check to see if facility circuit breaker is tripped.
One way of checking this
is to plug a lamp into wall
outlet that chair was
plugged into.
If facility circuit breaker is
tripped, determine what
caused circuit breaker to trip,
correct problem, and then
reset / replace circuit breaker.
Wire connections are loose.
Check all wiring connections from power cord to
terminal board to PC circuit board. Use a multimeter to perform a
continuity check on
wires.
Check for line voltage at
plug J1 (line power input)
on pins 1 (wht. or brn.) &
4 (blk or blue).
Clean any dirty connections.
Tighten any loose connections. Replace any damaged
connections. Refer to Figures
2-2 thru 2-4.
1/2 amp, 12 VDC, line input
fuse is blown.
See Figure 2-2 for location of 12 VDC line input
fuse. Perform continuity
check on fuse.
Replace blown line input fuse.
NOTE: There is a spare fuse
located directly to the left of
the fuse.
PC circuit board is malfunctioning.
Check for line voltage by
placing one meter probe
on TB1, terminal 2 and
the other on J5 (Power
Output to Motors), pin 2
(white) and then on pin 5
(blue).
If no voltage replace PC circuit
board. Refer to para 4.9.
Line Motor circuit fuse is
blown.
115 VAC fuse, 10 Amp
230 VAC fuse, 5 Amp
See Figure 2-2 for location of motor circuit fuse.
Perform continuity check
on fuse.
Replace blown motor circuit
fuse.
NOTE: There is a spare fuse
located directly to the left of
the line input fuse which may
be used.
PC circuit board is malfunctioning.
Check all wiring connec- Replace wire harness or PC
tions from power cord to circuit board, whichever is
terminal board to PC cir- defective. Refer to para 4.9.
cuit board. Use a multimeter to perform a
continuity check on
wires.
Check for line voltage at
plug J1 (line power input)
on pins 1 (wht. or brn.) &
4 (blk or blue). See Figures 2-2.
Page 2-4
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
Problem
Symptom
Probable Cause
One or more functions can- Some functions can be ini- Membrane switch panel is
not be initiated from mem- tiated with hand control,
malfunctioning (a switch
brane switch panels.
but at least one cannot.
membrane is malfunctioning).
When BACK UP and
BACK DOWN buttons are
pressed, chair will not
move (all other functions
work).
© Midmark Corporation 1999 SF-1606
Correction
Refer to Figure 2-2. Use
a jumper wire to jump the
12 VDC pins of connector J2:
B1 & B2 (Auto Exit),
B1 & B3 (Auto Operate),
B1 & B4 (Back Up),
B1 & B5 (Back Down),
B1 & B6 (Base Up),
B1 & B7 (Base Down),
B1 & B8 (Auxiliary),
Each function should
operate when jumped.
If all functions operate correctly when jumped, then fault
is in the membrane switch
panel. If so, replace membrane switch panel. Refer to
para 4.15. If a function still
does not work even when jumpered, fault is in motor circuit
or PC circuit board. Continue
troubleshooting using this
guide.
Wire connections loose.
Check all wiring connec- Clean any dirty connections.
tions between membrane Tighten or repair any loose or
switch panel and PC cir- damaged connections.
cuit board.
PC circuit board is malfunctioning.
Replace suspect PC cir- Replace PC circuit board.
Refer to para 4.9.
cuit board with known
working PC circuit board.
One or more functions can- Some functions can be ini- Foot control is malfunctionnot be initiated from foot
tiated with foot control, but ing (a foot control switch is
control.
at least one cannot.
malfunctioning).
BACK UP and BACK
DOWN functions do not
work. All other functions
work.
Check
Perform a continuity
If foot control switch does not
check on each N.O. foot pass continuity check, replace
control switch in foot con- switch. Refer to para 4.16.
trol (when switch is
pressed, switch circuit
should be closed) See
Figure 5-2 or 5-8.
Refer to Figure 2-2. Use
a jumper wire to jump the
12 VDC pins of connector J3:
A1 & A2 (Auto Exit),
A1 & A3 (Auto Operate),
A1 & A4 (Back Up),
A1 & A5 (Back Down),
A1 & A6 (Base Up),
A1 & A7 (Base Down),
Each function should
operate when jumped.
If all functions operate correctly when jumped, then fault
is in foot control switch of nonoperating function. If so,
replace the malfunctioning
switch of the foot control.
Refer to para 4.16 & 4.17. If a
function still does not work
even when jumpered, fault is
in motor circuit or PC circuit
board. Continue troubleshooting using this guide.
Wire connections loose.
Check all wiring connections between foot control switches and PC
circuit board.
Clean any dirty connections.
Tighten or repair any loose or
damaged connections.
PC circuit board is malfunctioning.
Replace suspect PC cir- Replace PC circuit board.
cuit board with known
Refer to para 4.9.
working PC circuit board.
Thermal overload switch in
back motor is activated to
the open position.
Check for continuity
between White and Red,
and White and Blk Motor
leads. Internal limit
switches must be closed.
Refer to Figures 5-3 or
5-9.
Wait 10 to 20 minutes to allow
back motor to cool and bimetal thermal protector to
reset. (Motor is for intermittent
use and should not be run
constantly).
Back capacitor is weak or
blown.
Replace suspect back
capacitor with known
working back capacitor.
Replace back capacitor. Refer
to 4.8.
Wiring connections loose.
Check all wiring connections to back motor.
Clean any dirty connections.
Tighten any loose connections. Replace any damaged
connections.
Page 2-5
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
Problem
Symptom
Probable Cause
BACK UP and BACK
DOWN functions do not
work. All other functions
work (continued)
When BACK UP and
BACK DOWN buttons are
pressed, chair will not
move (all other functions
work) (continued)
BACK UP function works,
but BACK DOWN function
does not or BACK DOWN
function works, but BACK
UP function does not. All
other functions work.
Back motor runs in one
Wiring connections loose.
direction, but not the other.
Back motor is malfunctioning.
Membrane switch panel is
malfunctioning (BACK UP or
BACK DOWN switch membrane is malfunctioning).
BASE UP and BASE
DOWN functions do not
work. All other functions
work.
Correction
Replace suspect back
Replace back motor. Refer to
motor with known workpara 4.7.
ing back motor assembly.
Check all wiring connections from PC circuit
board to back motor
assembly.
Clean any dirty connections.
Tighten any loose connections. Replace any damaged
connections.
Refer to Figures 2-2, 5-2
and 5-8. Use a jumper
wire to jump 12 VDC pins
of connector J2:
B1 & B4 (Back Up),
B1 & B5 (Back Down),
Each function should
operate when jumped.
If both functions operate correctly when jumped, then fault
is in the membrane switch
panel. If so, replace membrane switch panel. Refer to
para 4.15. If a function still
does not work even when jumpered, fault is in motor circuit
or PC circuit board.
Back Up Limit Switch is mal- Perform continuity check
functioning or is out of
on N.C. Back Up Limit
adjustment.
Switch and check limit
switch adjustment.
Replace Normally Closed,
Back Up Limit Switch. Refer
to para 4.12.
Back motor is malfunctioning.
Replace suspect back
motor with known working back motor.
Replace back motor. Refer to
para 4.7.
Back Down or Back Up
motor internal limit switch is
malfunctioning or out of
adjustment.
Perform continuity check
on motor internal limit
switches.
Replace back motor. Refer to
para 4.7.
Relay (K1 or K2) for Up or
Down function on PC circuit
board is malfunctioning).
Replace PC circuit board.
Refer to Figure 2-2 for
this check. Use a jumper Refer to para 4.9.
wire to jump line voltage
Test Points C2 and G;
Back Up function should
run. Use a jumper wire
to jump line voltage Test
Points C1 and G; Back
Down function should
run.
If motor runs when a
relay is jumped, fault is in
membrane switch panel,
wiring, or PC circuit
board. If motor does not
run when a relay is
jumped, fault is in wiring
or back motor.
When BASE UP and BASE Thermal overload switch in
DOWN buttons are
base motor is activated to
pressed, chair will not
the open position.
move (all other functions
work).
Base capacitor is weak or
blown.
© Midmark Corporation 1999 SF-1606
Check
Page 2-6
Check for continuity
between Blue (common)
and White (115 VAC) or
Brown (230 VAC), and
Blue (common) and Blk
Motor leads.
Wait 10 to 20 minutes to allow
back motor to cool and bimetal thermal protector to
reset. (Motor is for intermittent
use and should not be run
constantly).
Replace suspect base
capacitor with known
working capacitor.
Replace base capacitor.
Refer to 4.3.
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
Problem
BASE UP and BASE
DOWN functions do not
work. All other functions
work (continued).
Symptom
When BASE UP and BASE Wiring connections loose.
DOWN buttons are
pressed, chair will not
move (all other functions
work) (continued).
Base motor runs, but its
shaft does not turn.
BASE UP function works,
but BASE DOWN function
does not or BASE DOWN
function works, but BASE
UP function does not. All
other functions work.
Probable Cause
Check all wiring connections to base motor
assembly.
Correction
Clean any dirty connections.
Tighten any loose connections. Replace any damaged
connections.
Base motor assembly is mal- Replace suspect base
functioning.
motor assembly with
known working base
motor assembly.
Replace base motor. Refer to
para 4.4.
Base motor worm wheel is
broken.
Check worm wheel in
base motor.
Replace base motor worm
wheel. Refer to para 4.5.
Check all wiring connections from PC circuit
board back motor assembly.
Clean any dirty connections.
Tighten any loose connections. Replace any damaged
connections.
Refer to Figures 2-2, 5-2
or 5-8. Use a jumper wire
to jump the 12 VDC pins
of connector J2:
B1 & B6 (Base Up),
B1 & B7 (Base Down),
Each function should
operate when jumped.
If both functions operate correctly when jumped, then fault
is in the membrane switch
panel. If so, replace membrane switch panel. Refer to
para 4.15. If a function still
does not work even when jumpered, fault is in motor circuit
or PC circuit board.
Base motor runs in one
Wiring connections loose.
direction, but not the other.
Membrane switch panel is
malfunctioning (BASE UP or
BASE DOWN switch membrane is malfunctioning).
© Midmark Corporation 1999 SF-1606
Check
Base Up Limit Switch is mal- Perform continuity check
on N.C. Base Up Limit
functioning or is out of
Switch and check limit
adjustment.
switch adjustment
(should be a closed circuit when limit switch is
not tripped).
Adjust or replace Normally
Closed Base Up Limit Switch.
Refer to para 4.10.
Base Down Limit Switch is
malfunctioning or is out of
adjustment (causing an open
circuit).
Perform continuity check
on N.C. Base Down Limit
Switch and check limit
switch adjustment
(should be a closed circuit when limit switch is
not tripped).
Adjust or replace Normally
Closed Base Down Limit
Switch. Refer to para 4.10.
One or both of the Safety
Bail N/C Limit switches are
open.
Perform continuity check
on N.C. Safety Bail Limit
Switches and check limit
switch adjustments
(should be a closed circuit when limit switch is
not tripped).
Adjust or replace Normally
Closed Safety Bail Limit
Switch(es). Refer to para
4.14.
Base motor is malfunctioning.
Replace suspect base
motor with known working base motor.
Replace base motor. Refer to
para 4.4.
Page 2-7
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
Problem
Symptom
Probable Cause
Check
Correction
BASE UP function works,
but BASE DOWN function
does not or BASE DOWN
function works, but BASE
UP function does not. All
other functions work (continued).
Base motor runs in one
direction, but not the other
(continued).
Relay (K4 or K3) for Up or
Down function on PC circuit
board is malfunctioning.
Refer to Figure 2-2.
Use a jumper wire to
jump Line Voltage Test
Points C4 and G; Base
Up function should run.
Use a jumper wire to
jump Line Voltage Test
Points C3 and G; the
Base Down function
should run.
If the motor runs when a
relay is jumped, the fault
is in the membrane
switch panel, wiring, or
PC circuit board. If the
motor does not run when
a relay is jumped, the
fault is in the wiring or
base motor.
After checking the wiring,
membrane switch assemblies
and base motor replace PC
circuit board. Refer to para
4.9.
Auto Operate function
does not work properly.
Nothing happens when
Auto Operate button is
pressed (all other functions
work).
Membrane switch panel is
malfunctioning (Auto Operate switch membrane is malfunctioning).
Refer to Figures 2-2, 5-2,
and 5-8. Use a jumper
wire to jump 12 VDC pins
of connector J2:
B1 & B3 (Auto Operate),
The Auto Operate function should operate when
jumped.
If Auto Operate function operates correctly when jumped,
then fault is in the membrane
switch panel. If so, replace
membrane switch panel.
Refer to para 4.15. If a function still does not work even
when jumpered, fault is in
motor circuit or PC circuit
board.
Wiring connections loose.
Check all wiring connections to membrane switch
panels, Back Down Program limit switch, and
Base Up Program limit
switch.
Clean any dirty connections.
Tighten any loose connections. Replace any damaged
connections.
Back Down Program limit
switch is malfunctioning
(causing open circuit).
Perform continuity check
on N.C. Back Down Program limit switch (should
be a closed circuit when
limit switch is not
tripped).
Replace Back Down Program
limit switch. Refer to para
4.13.
Back Down Program limit
switch is normally tripped
(limit switch is not adjusted
to stop back section at operator’s desired position).
Check with operator to
see if operator is aware
that the back section can
be manually adjusted to
be stopped where
desired in the Auto Operate function.
Show the operator how to
manually adjust the Back
Down Program limit switch
(Refer to Back Programming
Procedure in the Installation
Manual).
Back Down Program limit
switch trip arm is not contacting back programming
plate.
Check to see if Back
Down Program limit
switch trips when it contacts the back programming plate.
Adjust the Back Down Program limit switch so it trips
properly when it contact the
back programming plate.
Refer to para 4.13.
Base Up Program limit
switch is malfunctioning
(causing open circuit).
Perform continuity check Replace Base Up Program
on N.C Base Up Program limit switch. Refer to para
limit switch (should be a 4.11.
closed circuit when limit
switch is not tripped).
© Midmark Corporation 1999 SF-1606
Page 2-8
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
Problem
Symptom
Probable Cause
Check
Nothing happens when
Auto Operate button is
pressed (all other functions
work) (continued).
Base Up Program limit
switch is normally tripped
(limit switch is not adjusted
to stop base function at
operator’s desired position).
Check with operator to
see if operator is aware
that the base section can
be manually adjusted to
stop where desired in the
Auto Operate function.
PC circuit board is malfunctioning.
Replace suspect PC cir- Replace PC circuit board.
cuit board with known
Refer to para 4.9.
working PC circuit board.
Membrane switch panel is
malfunctioning (Auto Exit
switch membrane is malfunctioning).
Refer to Figures 2-2, 5-2,
and 5-8. Use a jumper
wire to jump 12 VDC pins
of connector J2:
B1 & B2 (Auto Exit),
The Auto Exit function
should operate when
jumped.
Wiring connections loose.
Check all wiring connec- Clean any dirty connections.
tions to membrane switch Tighten any loose connections. Replace any damaged
panels.
connections.
PC circuit board is malfunctioning.
Replace suspect PC cir- Replace PC circuit board.
cuit board with known
Refer to para 4.9.
working PC circuit board.
Back or base function drifts Motor operates properly
by itself.
otherwise.
Motor brake is malfunctioning.
Replace suspect motor
with known working
motor.
Replace base motor (Refer to
para 4.4) or back motor (Refer
to para 4.7).
A function’s button has to
be pressed twice to get the
function to move.
One of motor’s “backup” limit
switches is tripping before its
“primary” limit switch, causing the motor to stop running, but since “primary” limit
switch does not trip, PC circuit board does not receive
signal to stop function by
deenergizing its relay; so the
function’s relay remains
energized.
Note: This will happen only if
previous selected function
was Auto Exit or Auto Operate function).
Check to make sure the
“primary” limit switch for
each function trips before
its “backup” limit switch.
Listed below are the “primary” and then “backup”
limit switches for the
functions which have two
limit switches.
Auto Exit function
“primary” - Back Up
limit switch
“backup” - internal limit
switch for Back Up
Auto Operate function
“primary” - are the Base
Up Program limit switch
and Back Down Program limit switch
“backup” - are the Base
Up limit switch and internal limit switch for Back
Down
Adjust the “primary” limit
switch so it trips before the
“backup” limit switch. Refer to
various limit switch adjustments.
Auto Operate function
does not work properly
(continued).
Auto Exit function does not
work properly.
Nothing happens when
Auto Exit button is pressed
(all other functions work).
After a function’s button is
depressed, a click is heard
(relay being deenergized)
but the function does not
activate. Depressing the
button the second time
causes the function to activate.
Note: This will happen only
if previous selected function was Auto Exit or Auto
Operate function).
© Midmark Corporation 1999 SF-1606
Page 2-9
Correction
Show the operator how to
manually adjust the Base Up
limit switch (Refer to Base
Programming Procedure in
the Installation Manual).
If Auto Exit function operates
correctly when jumped, then
fault is in the membrane
switch panel. If so, replace
membrane switch panel.
Refer to para 4.15. If a function still does not work even
when jumpered, fault is in
motor circuit or PC circuit
board.
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
Problem
Chair moves fine for light
patient, but will not move
or moves slowly for very
heavy patient
Symptom
Probable Cause
Check
Correction
Heavy patients cause chair Chair overloaded with too
to malfunction.
heavy of a patient.
Maximum weight capacity is 325 lbs (147.4 kg).
Inform chair operator of weight
limitation.
Low voltage is being supplied to chair.
Check voltage at wall
receptacle - should be
between 110.0 to 126.0
VAC on 115 VAC units or
220 to 252 VAC on 230
VAC units.
Correct low voltage situation
at wall receptacle.
Capacitor for suspect function is weak.
Replace suspect capacitor with known working
capacitor.
Replace base capacitor (refer
to para 4.3) or back capacitor
(refer to para 4.8).
Motor screw threads are dry
or dirty, causing friction.
Check for foreign matter
and lack of lubricant on
screw threads.
Clean all foreign matter off of
screw threads. Coat threads
with STP treatment oil or
equivalent. If motor is still
lacking power, replace it.
Motor is exceedingly noisy. Noisy motor.
Foreign matter on screw
Check for foreign matter
threads and / or lack of lubri- and lack of lubricant on
cant.
screw threads.
Clean all foreign matter off of
screw threads. Coat ball
threads with STP treatment oil
or equivalent. If motor is still
noisy, replace it.
Headrest is difficult to
adjust or does not stay in
position.
Headrest slide is too tight
and needs adjusted.
Check adjustment of
headrest slide.
Adjust the headrest slide
assembly. Refer to para 4.19.
Headrest does not lock into Headrest slide is too loose
a position or slides downand needs adjusted.
ward on own.
Check adjustment of
headrest slide.
Adjust the headrest slide
assembly. Refer to para 4.19.
Brake is off, but chair top is
binding when rotated.
Brake is out of adjustment
(needs loosened).
Check adjustment of
brake.
Adjust brake. Refer to para
4.18.
Brake lever is difficult to
engage.
Brake is out of adjustment
(needs loosened).
Check adjustment of
brake.
Adjust brake. Refer to para
4.18.
Chair top can still be
rotated when BRAKE lever
is in locked position.
Brake is out of adjustment
(needs tightened).
Check adjustment of
brake.
Adjust brake. Refer to para
4.18.
Brake pads worn.
Check condition of brake
pads.
Replace brake pads. Refer to
para 4.18.
There is dirt, burrs, corrosion, or foreign matter in the
armrest bearing or armrest
post.
Check for dirt, burrs, corrosion, or foreign matter
in the armrest bearing.
Clean the armrest post and
armrest bearing. Use crocus
cloth or a file to remove any
burrs.
Rotational base not working.
Armrest is not working
properly.
Excessive force is required
to position the headrest.
Armrest is hard to raise,
rotate, or will not lock into
place when returned to
normal armrest position.
© Midmark Corporation 1999 SF-1606 Rev. 3/10
Page 2-10
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
J5
Jumper Pins and Points
Power Output to
Base and Back Motors
Back Down
NO
NO
C
K2
NO
C
K1
Base Up
Base Down
Back Up
K4
NO
C
C
K3
C1
A1 to A2
or
(Auto Exit)
B1 to B2
A1 to A6
or
B1 to B6
A1 to A3
(Auto Operate)
or
B1 to B3
A1 to A7
(Base Down)
or
B1 to B7
A1 to A4
(Back Up)
or
B1 to B4
A1 to A8
(Auxiliary)
or
B1 to B8
(Base Up)
A1 to A5
or
(Back Down)
B1 to B5
C2
C3
(White wire) G to C1
(White wire) G
to C3
(White wire) G
(White wire) G
to C4
C4
E
to C2
1/2-amp 12 VDC
Line Input Fuse
Terminal Board (TBI)
J2
U8
for Membrane
Switch Panel
F2
Power
Input
J3
for Foot Control
F1
J4
J1
Limit Switches
A1
A3
A2
A5
A4
A7
A6
B6
B8
A8
B7
B4
B5
Line Power Input
D
B2
B3
B1
Black (115 VAC)
Blue (230 VAC)
10-amp 115 VAC
5-amp 230 VAC
Motor Fuse
Spare Fuses
White (115 VAC)
Brown (230 VAC)
KA914201i
Figure 2-2. Troubleshooting 115 or 230 VAC System
P.C. Board and Terminal Board
© Midmark Corporation 1999 SF-1606 Rev. 4/03
Page 2-11
Printed in U.S.A.
Return To Table Of Contents
SECTION II
TESTING AND TROUBLESHOOTING
© Midmark Corporation 1999 SF-1606
Page 2-12
Printed in U.S.A.
Return To Table Of Contents
SECTION III
SCHEDULED MAINTENANCE
SECTION III
SCHEDULED MAINTENANCE
3.1
Scheduled Maintenance
Table 3-1 is a Scheduled Maintenance Chart which lists
Interval
Semi-annually
inspections and services that should be performed periodically on the chair. These inspections and services
should be performed as often as indicated in the chart.
Inspection or Service
What to Do
Obvious damage
Visually check condition of chair for obvious damage such as: cracks in components, missing components, dents in components, or any other visible damage which would cause chair to be unsafe
to operate or would compromise its performance. Repair chair as necessary.
Fasteners / hardware
Check chair for missing or loose fasteners / hardware. Replace any missing hardware and tighten
any loose hardware as necessary.
Warning and instructional Check for missing or illegible decals. Replace decals as necessary.
decals
Pivot points / moving
parts / accessories
Lubricate all exposed pivot points, moving parts, and accessories with silicone based lubricant.
Membrane switch panels Check each switch on both membrane switch panels for proper operation. Depress each membrane switch to make sure selected function operates. If any switch does not work, replace membrane switch panel. Refer to para 4.15.
Foot control
Check each switch on foot control for proper operation. Depress each foot control switch to make
sure selected function operates when its button is depressed. If any switch does not work, replace
malfunctioning switch. Refer to para 4.16 or 4.17.
Base and Back motors
Check both motors for proper operation in up and down directions. If motor makes excessive
noise, clean all foreign matter off screw threads and coat threads with STP treatment oil or equivalent. If motor is weak or hums, replace its capacitor. Refer to para 4.3 thru para 4.8.
Headrest slide mechanism
Check headrest slide mechanism for proper operation by sliding headrest up and down. Headrest
should not take excessive force to move but should require a slight force to begin movement. If
necessary, adjust headrest slide assembly. Refer to para 4.19.
Rotation bearing
Check rotation bearing for proper operation. Unlock brake and rotate chair top. Chair top should
rotate smoothly and easily 45° in each direction from centerline of chair. If binding occurs, adjust
brake. Refer to para 4.18.
Move footrest release lever to brake position and attempt to rotate chair top. Chair top should not
be able to be moved. If necessary, adjust brake. Refer to para 4.18.
Armrest
Check armrest. Rotate it to the side and back to its normal position. If armrest is hard to rotate, or
will not lock into place, clean armrest post and bearing. Use crocus cloth or a file to remove any
burrs. Coat post and bearing with silicone based lubricant.
Limit switches.
Check to make sure “primary” limit switch for each function trips before its “backup” limit switch.
Listed below are“primary” and “backup” limit switches for each function.
Auto Exit function
“primary” - Back Up limit switch
“backup” - Internal (motor) limit switch for Back Up
Auto Operate function
“primary” - Base Up Program limit switch and Back Down Program limit switch
“backup” - Base Up limit switch and internal (motor)l limit switch for Back Down
Back Up function
“primary” - Back up limit switch
“backup” - Internal (motor) limit switch for Back Up
Back Down function
“primary” - Internal (motor) limit for Back Down
“backup” - None
Base Up function
“primary” - Base up limit switch
“backup” - None
Base Down function
“primary” =Base down limit switch
“backup” = None
NOTE: If necessary, adjust a “primary” limit switch to trip before a “backup” limit switch.
© Midmark Corporation 1999 SF-1606
Page 3-1
Printed in U.S.A.
Return To Table Of Contents
SECTION III
SCHEDULED MAINTENANCE
Interval
Inspection or Service
What to Do
Safety Bail Limit
Switches
Test both Safety Bail Limit switches to assure they function, stopping the chair’s descent in Auto
Exit and Base Down modes. Press upward on the bottom lift arm cover during the descent. If
descent continues adjust or replace malfunctioning limit switch(es). Refer to para 4.14).
Upholstery
Check all upholstery for rips, tears, or excessive wear.
Accessories
Check that all accessories have all of their components and that they function properly.
Operational Test
Perform an Operational Test to determine if the chair is operating within its specifications (Refer to
para 2.1). Replace or adjust any malfunctioning components.
© Midmark Corporation 1999 SF-1606
Page 3-2
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
SECTION IV
MAINTENANCE / SERVICE INSTRUCTIONS
4.1
Introduction
(4) Pull upward on chair back cushion (3) to
release it from mounting studs (4) on back and
remove cushion.
WARNING
Refer to Operator Manual for complete
instructions on operating the dental
chair. Failure to do so could result in personal
injury.
(5) Using a 3/8" socket, remove four screws (1,
Figure 4-2) that secure hinges (2) to seat cushion (3) and remove cushion.
NOTE
Perform an operational test on the dental chair after
repair is completed to confirm repair was properly
made and that all malfunctions were repaired.
The following paragraphs contain removal, installation,
repair, and adjustment procedures for the dental chair.
4.2
Upholstery
A. Removal
(1) Raise chair up to its highest position and recline
the back to 45°.
(2) Move headrest (1, Figure 4-1) assembly
upward.
Figure 4-2. Upholstery
B. Installation
(1) Install four screws (1, Figure 4-2) in bottom of
seat and hand tighten two turns.
(2) Place two hinges (2) up into a vertical position
and lower seat cushion (3) onto chair so it rests
on hinges (2).
(3) Rotate hinges (2) downward toward screws (1)
allowing screws to slide into slots of hinges (2).
Figure 4-1. Upholstery
(4) Tighten four screws (1).
(3) Pull upward on back cushion skirt (2) to separate velcro on skirt from velcro on chair back.
© Midmark Corporation 1999 SF-1606
Page 4-1
Printed in U.S.A.
Return To Table Of Contents
4.3
SECTION IV
MAINTENANCE / SERVICE
Base Capacitor
A. Removal
WARNING
Unplug chair power cord from wall outlet before removing covers or working
on chair. Failure to comply could result in personal injury.
(1) Unplug chair power cord.
(2) Remove R.H. (1, Figure 4-3) and L.H. (2) base
covers (three screws each).
Figure 4-4. Base Motor Capacitor
(3) Remove center base cover (3) (four screws).
(5) Remove cap (3) from capacitor (2).
WARNING
Using a screwdriver with an insulated
handle, jumper across capacitor terminals to discharge capacitor before touching terminals or wires. Failure to comply could result in
serious personal injury.
(6) Discharge capacitor (2).
(7) Tag and disconnect four wires (4) and remove
capacitor (2).
B. Installation
Figure 4-3. Base Motor Capacitor
(4) Using a screwdriver, pry up on tab (A, Figure
4-4) of mounting bracket (1) and remove capacitor (2).
(1) Connect four wires (4, Figure 4-4) to
capacitor (2).
(2) Install capacitor cap (3).
(3) Position capacitor (2) on mounting bracket (1)
making sure capacitor is held firmly in place
with tabs of bracket.
(4) Install center base cover (3, Figure 4-3) on
mounting brackets and secure with four screws.
(5) Install L.H. (2) and R.H. (1) base cover on center base cover (3) (three screws each).
(6) Plug chair power cord into wall outlet and check
operation.
© Midmark Corporation 1999 SF-1606
Page 4-2
Printed in U.S.A.
Return To Table Of Contents
4.4
SECTION IV
MAINTENANCE / SERVICE
Base Motor
A. Removal
WARNING
Rotate chair so it is aligned straight on
base and engage the brake to prevent
movement. If there are chair mounted accessories, assure they are folded inward, over chair, to
prevent side loading during base motor removal
and assembly procedures.
(1) Align chair on base, engage brake, and, if necessary, fold any chair mounted accessories
inward, over chair.
Figure 4-6. Base Motor Removal
(2) Unplug chair power cord.
(7) If base motor is operable:
(3) Remove R.H. (1, Figure 4-5 ) and L.H. (2) base
covers (three screws each).
a.
Plug chair power cord into wall outlet.
b.
Raise BASE UP function all the way up.
DANGER
Make sure that chair top is securely
supported before starting to remove
base motor. Failure to do so could result in chair
top collapsing which could cause serious personal injury or death.
NOTE
Run base motor until top support just rests against
wood supports. Do not draw chair down so base
motor is binding against wood supports.
c.
Figure 4-5. Base Motor Removal
(4) Remove center base cover (3) (four screws).
Position two wood 2 x 4’s (18” long [45.7
cm] ) (1, Figure 4-7) beneath top support
(2) , then lower chair so it barely rests on
the wood supports.
(5) Remove R.H. (1, Figure 4-6), Center (2) and
L.H. (3) platform covers (4 screws).
(6) Pull outward on one corner of bottom lift arm
cover (4) until it clears standoff (5). Repeat
step for other corner and remove cover (4).
© Midmark Corporation 1999 SF-1606
Page 4-3
Printed in U.S.A.
Return To Table Of Contents
e.
SECTION IV
MAINTENANCE / SERVICE
Carefully lower chair onto wood supports,
until motor shaft and trunnion block disengages (5) from frame (4).
WARNING
Disconnect the power from the chair.
Failure to comply could result in personal injury.
f.
Disconnect power supply to chair.
g.
Remove mounting brackets (1, Figure
4-9) (four screws).
Figure 4-7. Base Motor Removal
d.
Remove four screws (1, Figure 4-8), lockwashers (2), and trunnion retainer plate
(3) from frame (4).
Figure 4-9. Base Motor Removal
NOTE
Cut any cable ties or remove any cables from cable
clamps which are restricting movement of mounting
plate (2) when its left side is being pulled outward.
Figure 4-8 Base Motor Removal
© Midmark Corporation 1999 SF-1606
Page 4-4
h.
Carefully pull outward on left side of
mounting plate (2) and position plate so
base motor (3) can be accessed.
i.
Unplug base motor wire harness
(1, Figure 4-10) and disconnect cable
clamp (2) from base.
j.
Remove one of the retaining rings (3) and
the pin (4) securing clevis (5) to base
mounting bracket (6).
Printed in U.S.A.
Return To Table Of Contents
b.
SECTION IV
MAINTENANCE / SERVICE
Remove mounting brackets (1, Figure
4-9) (four screws).
NOTE
Cut any cable ties or remove any cables from cable
clamps which are restricting movement of mounting
plate (2) when its left side is being pulled outward.
c.
Carefully pull outward on left side of
mounting plate (2) and position plate so
base motor (3) can be accessed.
d.
Unplug base motor wire harness
(1, Figure 4-10) and disconnect cable
clamp (2) from base.
e.
Remove one of the retaining rings (3) and
the pin (4) securing clevis (5) to base
mounting bracket (6).
f..
Remove ground wire (7) from motor (one
screw and lockwasher).
g.
Remove two washers (8); one from each
side of trunnion (9).
Figure 4-10. Base Motor Removal
k..
Remove ground wire (7) from motor (one
screw and lockwasher).
l.
Remove two washers (8); one from each
side of trunnion (9).
m.
DANGER
Remove four screws (1, Figure 4-8), lockwashers (2), and trunnion retainer plate
(3) from the frame (4), then remove motor
assembly.
Make sure that chair top is securely
supported before starting to remove
base motor. Failure to do so could result in chair
top collapsing which could cause serious personal injury or death.
EQUIPMENT ALERT
(8) If base motor is not operable:
WARNING
Disconnect the power from the chair.
Failure to comply could result in personal injury.
a.
Do not apply pressure to top support with
jack until after base motor has been disconnected from base mounting bracket or damage
could occur to motor assembly.
h.
Place a jack (1, Figure 4-11) beneath top
support (2) to support it while removing
base motor.
l.
Using jack (1), elevate chair to access
shaft end of motor assembly.
Disconnect power supply to chair
© Midmark Corporation 1999 SF-1606
Page 4-5
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
(6) Place p.c board mounting plate (1, Figure 4-12)
back in position and install mounting brackets
(2) (four screws).
Figure 4-12. Base Motor Installation
WARNING
Figure 4-11. Base Motor Removal
m.
Remove four screws (1, Figure 4-8), lockwashers (2), and trunnion retainer plate
(3) from the frame (4), then remove motor
assembly.
Carefully jog BASE UP so trunnion
moves just enough to insert into slot of
support bracket. Do not remove wood supports
until trunnion brackets have been securely
installed.
B. Installation
(7) Carefully jog BASE UP function while guiding
trunnion arms (A, Figure 4-13) into trunnion
slots (B). Make sure trunnion arms are fully
seated in trunnion slots.
(1) Install two nylon washers (8, Figure 4-10); one
on each side of trunnion (9).
NOTE
If new base motor comes with a ground wire, remove
it and use the existing ground wire on chair.
(2) Attach ground wire (7) to base motor (one
screw and washer).
(3) Attach clevis of base motor (5) to mounting
bracket (6) with pin (4) and two retaining
rings (3).
(4) Connect base motor wire harness to wire harness (1).
Figure 4-13. Base Motor Installation
(5) Install cable clamp (2) (one screw and nut).
© Midmark Corporation 1999 SF-1606
Page 4-6
Printed in U.S.A.
Return To Table Of Contents
(8) Install trunnion retainer plate (1, Figure 4-13) on
scissors assembly (2) and secure with four
lockwashers (3) and screws (4).
SECTION IV
MAINTENANCE / SERVICE
(12) Install center base cover (1, Figure 4-15) (four
screws).
(9) Raise BASE UP function all the way up and
remove wood supports.
(10) Pull outward on one corner of upper arm cover
(1, Figure 4-14); then install bottom lift arm
cover (2) on standoff (3), making sure cutout
(A) is mounted on scissors joint (B). Repeat
step for other corner of bottom lift cover.
Figure 4-15. Base Motor Installation
(13) Install R.H. (2) and L.H. (3) base covers (six
screws).
(14) Plug chair power cord into wall outlet.
Figure 4-14. Base Motor Installation
(11) Install center (4), R.H. (5) and L.H. (6) platform
covers (four screws).
© Midmark Corporation 1999 SF-1606
Page 4-7
Printed in U.S.A.
Return To Table Of Contents
4.5
Base Motor Worm Gear
SECTION IV
MAINTENANCE / SERVICE
B. Installation
(1) Install worm wheel (10, Figure 4-16) on screw
shaft (5) and then, using a hammer and 3/16”
punch, secure with roll pin (9), making sure
ends of roll pin are flush with worm wheel.
A. Removal
(1) Remove base motor (Refer to para 4.4).
(2) Using a 3mm Allen Wrench, remove two setscrews (1, Figure 4-16) and then unscrew clevis (2) from motor housing (3).
NOTE
There may be excess grease in the motor housing
which may be used for the following step.
(2) Coat surfaces of two bearing races (7), bearing
(8), and worm wheel (10) with high temperature
bearing grease.
(3) Insert screw shaft (5) into motor housing (3) as
far as possible by hand. Then, using a rubber
mallet, gently tap screw shaft (5) in until fully
seated in motor housing.
(4) Install one bearing race (7), bearing (8), one
bearing race (7), and retaining ring (6) on end
of screw shaft (5).
Figure 4-16. Base Worm Gear
(5) Coat threads of two nuts (4) with removable
threadlocking adhesive (Loctite 242).
(3) Remove two nuts (4) from screw shaft (5).
EQUIPMENT ALERT
(4) Using a rubber mallet, gently drive screw shaft
(5) out of motor housing (3).
Do not over-tighten lock nuts on screw
shaft.
(5) Remove retaining ring (6), two bearing races
(7), and bearing (8) from motor housing (3).
(6) Using a 3/16” punch and hammer, drive out roll
pin (9) and remove worm wheel (10) from screw
shaft (5).
(7) Inspect inside motor housing (3) for broken
worm wheel pieces, metal shavings, or any
other foreign debris. Remove any debris.
Inspect screw shaft (5) for burrs. Remove any
burrs with a file.
(6) Install first nut (4) on screw shaft (5) and tighten
until finger tight. Then, using a wrench, tighten
nut 1/4 additional turn.
(7) Install second nut (4) on screw shaft (5) until
finger tight. Then, while holding first nut (4) in
place, tighten second nut against first nut.
(8) Screw clevis (2) into motor housing (3) and
tighten until finger tight. Then, unscrew clevis
slightly until the next closest two setscrew (1)
holes are aligned with setscrew holes on motor
housing (3). Secure clevis in this position with
two setscrews (1).
(9) Install base motor (Refer to para 4.4).
© Midmark Corporation 1999 SF-1606
Page 4-8
Printed in U.S.A.
Return To Table Of Contents
4.6
Base Motor Trunnion
SECTION IV
MAINTENANCE / SERVICE
C. Assembly
(1) Place the drive nut (6, Figure 4-17) into the
trunnion block (8) and install the pin (7).
A. Removal
(1) Remove the base motor (refer to para 4.4).
(2) Using an 8mm allen wrench, remove the socket
head screw, flat washer, and lock washer (1,
Figure 4-17) from motor shaft (2).
NOTE
The trunnion plate (5) is intentionally deformed in
order to apply pressure to the drive nut (6).
(2) Place trunnion plate (5) onto trunnion block (8)
and secure with two socket head screws and
lock washers (4).
D. Installation
EQUIPMENT ALERT
Trunnion plate (5, Figure 4-16) must face
toward the motor when installing trunnion
assembly (3) on motor shaft (2).
(1) Install trunnion assembly (3) on motor
shaft (2).
(2) Install socket head screw, flat washer, and lock
washer (1) onto motor shaft (2).
EQUIPMENT ALERT
Lubricate both studs on trunnion block and
motor shaft with an extreme pressure lubricant such as Magnalube-G Teflon Lubricant or equivalent.
Figure 4-17. Base Motor Trunnion
(3) Install base motor (Refer to para 4.4).
(3) Unscrew the trunnion assembly (3) from the
motor shaft (2).
B. Disassembly
(1) Using a 3/16” allen wrench, remove the two
socket head set screws and lock washers (4,
Figure 4-17) and remove the trunnion plate (5).
(2) Separate the drive nut (6), pin (7) and,
trunnion block (8).
© Midmark Corporation 1999 SF-1606
Page 4-9
Printed in U.S.A.
Return To Table Of Contents
4.7
Back Motor
SECTION IV
MAINTENANCE / SERVICE
(4) Remove two ground wires (2) by removing locknut, screw and lockwasher (3) from frame.
A. Removal
WARNING
(1) Unplug chair power cord.
Be sure Back section is supported
before disconnecting Back Motor
assembly. Failure to comply may result in personal injury.
(2) Remove seat upholstery (1, Figure 4-18) by
loosening four screws (2) that secure seat
upholstery to seat hinges (3).
(5) While supporting back section, remove two
push nut caps (1, Figure 4-20 ), two leg support
rollers (2), two small retaining rings (3), and two
large E-clips (4) on tow bar shaft (5).
(6) Loosen set screw (6) that secures motor actuator tube (A) to tow bar shaft (5).
(7) Separate tow bar shaft (5) from seat support
bar assemblies (7).
(8) While supporting back motor assembly (8),
remove four screws and lock washers (9) and
remove back motor assembly.
Figure 4-18. Back Motor
(3) Disconnect motor wire harness (1, Figure 4-19 )
from wire harness.
Figure 4-19. Back Motor
© Midmark Corporation 1999 SF-1606
Page 4-10
Printed in U.S.A.
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SECTION IV
MAINTENANCE / SERVICE
Figure 4-20 Back Motor
(9) Remove two E-clips, (1, Fig. 4-21 ), top motor
pin (2), spacer (3), and R.H. (4) and L.H. (5)
motor mount brackets.
B. Installation.
NOTE
Assure R.H. (4, Figure 4-21) and L.H. (5) motor
mount brackets are positioned correctly on motor
during installation. Spacer (3) can be installed on
either side of bracket of motor. If necessary, install
new nyliner bearings (6) in mounting brackets.
(1) Place R.H. (4, Figure 4-21) and L.H.(5) motor
mount brackets in position and install top motor
pin (2), spacer (3) and E-clips (1)>
(2) Connect motor wire harness (1, Figure 4-19) to
mating chair wire harness.
(3) Plug chair power cord into wall outlet receptacle.
(4) Run BACK UP function until back motor is
stopped by motor’s internal limit switch.
Figure 4-21. Back Motor
© Midmark Corporation 1999 SF-1606
Page 4-11
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
(7) Position motor assembly in chair and connect
two ground wires (2, Figure 4-19) to frame with
lockwasher, screw, and locknut (3).
(5) Unplug chair power cord.
NOTE
When adjusting distance between actuator tube (1,
Figure 4-22) and motor assembly (2) do not turn
motor shaft (3).
(6) Manually adjust actuator tube (1, Figure 4-22)
by rotating it toward motor assembly (2) until
5 threads on motor shaft (3) are visible.
(8) Supporting motor assembly (1, Figure 4-23),
secure motor brackets (2) to chair support (3)
with four screws and lockwashers (4).
NOTE
Hole for set screw, on end of actuator tube, must be
facing upward for access during installation.
(9) Slide tow bar shaft (5) thru hole on end of actuator tube (6).
(10) Insert ends of tow bar shaft (5) into holes on
ends of seat support bar assemblies (7) and
install small retaining rings (8).
(11) Install large E-clips (9) on both sides of actuator
tube (6) and tighten set screw and lock nut (10).
NOTE
Figure 4-22. Back Motor
Check condition of O-rings (A) on leg support rollers
(11) and replace them if necessary.
Figure 4-22. Back Motor
© Midmark Corporation 1999 SF-1606
Page 4-12
Printed in U.S.A.
Return To Table Of Contents
(12) Lubricate both ends of tow bar shaft and install
leg support rollers (11) and push nut caps (12).
4.8
SECTION IV
MAINTENANCE / SERVICE
Back Motor Capacitor
A. Removal
EQUIPMENT ALERT
(1) Remove Base Motor (refer to para 4.4)
Assure all electrical leads are secured in
existing cable clamps to prevent accidental
cutting when chair is in operation.
(2) Remove capacitor cover (1, Figure 4-24) (two
screws).
(13) Plug the chair into outlet and check operation.
EQUIPMENT ALERT
Check to assure the internal motor limit
switches (Back Up and Back Down) function correctly, stopping the motor at its extreme limits.
(14) Install upholstery (refer to para 4.2)
Figure 4-24. Back Motor Capacitor
WARNING
Using a screwdriver with an insulated
handle, jumper across capacitor terminals to discharge capacitor before touching terminals or wires. Failure to comply could result in
serious personal injury.
(3) Discharge capacitor (2).
(4) Disconnect leads (3) and remove capacitor (2).
B. Installation
EQUIPMENT ALERT
Assure capacitor being installed is of same
microfarad (Mfd) and voltage rating as one
being replaced.
(1) Connect electrical leads (3, Figure 4- 24) to
capacitor (2).
© Midmark Corporation 1999 SF-1606
Page 4-13
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
(4) Tag and disconnect foot control harness (1, Figure 4-26) and membrane panel harness (2)
from PC circuit board (3).
(2) Insert capacitor (2) into capacitor cover (1) and
secure to base motor (two screws).
(3) Install Back Motor assembly on chair ( refer to
para 4.7).
4.9
Printed Circuit (PC) Board
A. Removal
(1) Unplug chair power cord.
(2) Remove R.H. (1, Figure 4-25) and L.H. (2) base
covers (three screws each).
Figure 4-26. P.C. Board
Figure 4-24. P.C. Board
(5) Disconnect limit switch harness (4), power harness (5), and motor harness (6) from PC circuit
board (3).
(3) Remove center base cover (3) (four screws).
(6) Using a screwdriver, depress locking tab (A) of
standoff (7) while pulling upward on that corner
of PC circuit board to release it. Repeat for
three remaining standoffs (7) and remove PC
circuit board (3).
B. Installation
(1) Inspect standoffs (7, Figure 4-26) and replace
them if broken.
(2) Place PC board (3) in position on standoffs (7),
pushing down to lock in place.
(3) Reconnect harnesses to their respective pin
connections on PC board.
© Midmark Corporation 1999 SF-1606
Page 4-14
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
(4) Install center base cover (3, Figure 4-25) on
mounting brackets and secure with four screws.
(3) Tag and disconnect connector (4) from base up
limit switch (5).
(5) Install L.H. (2) and R.H. (1) base cover on center base cover (3) (three screws each).
(4) Tag and disconnect connector (6) from base
down limit switch (7).
(6) Plug chair power cord into wall outlet and check
operation.
(5) Remove two screws (8), lockwashers (9), base
up (5), and base down limit switch (7).
4.10
Base Up & Base Down Limit Switch
B. Installation
(1) Install base down limit switch (7, Figure 4-27)
and base up limit switch (5) on electrical connection plate (10) and secure with two lockwashers (9) and screws (8).
A. Removal
(1) Unplug chair power cord.
(2) Remove three screws (1, Figure 4-27) and L.H.
base cover (2) from center base cover (3).
(2) Connect connector (6) to base down limit
switch (7).
(3) Connect connector (4) to base up limit
switch (5).
C. Adjustment
(1) Remove right-hand base cover (2, Figure 4-27)
(three screws).
(2) Remove L.H. (1, Figure 4-28), Center (2) and
R.H. (3) platform covers (4 screws).
Figure 4-28. Base Up / Down Limit Switches
Figure 4-27
© Midmark Corporation 1999 SF-1606
Page 4-15
Printed in U.S.A.
Return To Table Of Contents
b.
(3) Pull outward on one corner of bottom lift arm
cover (4) until it clears standoff (5). Repeat
step for other corner and remove cover (4).
SECTION IV
MAINTENANCE / SERVICE
Raise Base Up function all the way up
until motor stops.
WARNING
Limit switch cam adjustments must be
done with table plugged in. Line voltage is present on terminal board near limit
switches. Use care not to touch bare wires or terminals. Failure to comply could result in personal injury.
(4) Base Up Limit Switch Adjustment.
a.
Loosen screw (1, Figure 4-29) and rotate
cam (2) up off trip button (A) of Base Up
limit switch (3).
Figure 4-30. Base Up / Down Limit Switches
c.
Lower Base Down function until flat
washer (1, Figure 4-30) is 1/2” (1.27 cm)
from face of trunnion nut (2).
NOTE
Rotate Base Up limit switch cam (2, Figure 4-29)
above switch trip button (A) and then downward to
trip button during adjustment due to rotational direction of cam (2).
d.
Rotating in downward direction, adjust
cam (2, Figure 4-29) so that it “just” operates trip button (A) of Base Up limit switch
(3); then tighten screw (1) on cam.
(5) Base Down Limit Switch Adjustment.
a.
Loosen screw (4, Figure 4-29) and rotate
cam (5) down off trip button (B) of Base
Down limit switch (6).
CAUTION
Figure 4-29. Base Up / Down Limit Switches
EQUIPMENT ALERT
Do not run Base Down function any lower
than specified in step 7. Doing so could
allow chair to physically collide with itself, damaging
motor, covers, or other components.
When base motor reaches its limit, release
Base Up control button quickly; motor is
binding at this point and damage to motor could
occur.
© Midmark Corporation 1999 SF-1606
Page 4-16
Printed in U.S.A.
Return To Table Of Contents
(6) Lower Base Down function until measurement
(A, Figure 4-31) between surface of baseplate
and top of cross weldment is no lower than
8 5/8 in. ( 21.9 cm) or higher than 8 3/4 in. (22.2
cm)
4.11
SECTION IV
MAINTENANCE / SERVICE
Base Up Program Limit Switch
A. Removal
(1) Remove R.H. base cover (1,Figure 4-32) (three
screws).
Figure 4-31. Base Up / Down Limit Switches
NOTE
Rotate Base Down limit switch cam (5, Figure 4-29)
below switch trip button (B) and then upward to trip
button during adjustment due to rotational direction of
cam (5).
(7) Rotating in upward direction, adjust cam (5,
Figure 4-29) so that it “just” operates trip button
(B) of Base Down limit switch (6); then tighten
screw (4) on cam.
Figure 4-32. Base Up Program Limit Switch
(8) Plug chair power cord into wall outlet and check
operation.
(9) Install bottom lift arm cover (4, Figure 4-28),
L.H. (1) and R.H. (3) and center (2) platform
covers (four screws).
(2) Disconnect wire harness (2).
(3) Remove base up program limit switch (3) (two
screws).
B. Installation
(10) Install R.H. (2, Figure 4-27) base cover (three
screws).
(1) Install base up program limit switch (3, Figure
4-32) (two screws).
(2) Connect wire harness (2).
(3) Install R.H. base cover (1) (three screws) and
check operation.
© Midmark Corporation 1999 SF-1606
Page 4-17
Printed in U.S.A.
Return To Table Of Contents
4.12
Back Up Limit Switch
SECTION IV
MAINTENANCE / SERVICE
(2) Install back up limit switch assembly (2) on limit
switch plate (7) positioning it as far toward foot
end as possible and secure with nut bar (4).
A. Removal
(3) Connect switch harness (1) to back up limit
switch (2).
(1) Remove seat upholstery (refer to para 4-2).
(2) Raise Base Up all way up and lower Back
Down function all way down.
C. Adjustment
(3) Unplug chair power cord.
EQUIPMENT ALERT
Be sure that Back Up Limit Switch trips to
the “open” position before internal limit
switch in Back Motor trips.
(4) Disconnect switch harness (1, Figure 4-33)
from back up limit switch (2).
(1) Raise Back Up function all way up (until Back
Up limit switch is tripped).
NOTE
If necessary, disconnect switch harness and use an
ohmmeter to determine if normally closed (C / NC)
contacts have opened and reinstall switch harness.
EQUIPMENT ALERT
Seat support bar assembly (1, Figure 434) and top cross brace (A) of seat platform (2) should not come in contact when back is all
way up.
(2) Distance between seat support bar assembly
(1, Figure 4-34) and top cross brace (A) of seat
platform (2) should be approximately 1/8” (.32
cm).
(3) If necessary, loosen two screws (3, Figure 433) and adjust back up limit switch (2) to trip
earlier or later.
Figure 4-33. Back Up Limit Switch
(5) Remove two screws (3), nut bar (4), back up
limit switch (2), washers (5), and actuator (6)
from limit switch plate (7).
B. Installation
(1) Assemble two screws (3, Figure 4-33), actuator
(6), and two washers (5) on Back Up limit
switch (2).
© Midmark Corporation 1999 SF-1606
Page 4-18
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
Figure 4-34. Back Up Limit Switch
4.13
Back Down Program Limit Switch
A. Removal
(1) Raise Base Up all way up and lower Back
Down function all way down.
Figure 4-35. Back Down Program Limit Switch
B. Installation
(2) Unplug chair from wall outlet.
(1) Install limit switch (2, Figure 4-35) on limit
switch bracket (6) and secure with two screws
(4) and nut bar (5).
(3) Remove seat upholstery (refer to para 4-2).
(4) Lift upward on seat support assembly (1, Figure
4-35) and place a support beneath it to hold it in
place while working on Back Down Program
Limit Switch (2).
(2) Connect wire harness (3).
C. Adjustment
(5) Disconnect wire harness (3) from back down
program limit switch (2).
EQUIPMENT ALERT
(6) Remove two screws (4), limit switch (2), and nut
bar (5) from limit switch bracket (6).
Assure trip arm (A, Figure 4-36) does not
bottom out on back down program limit
switch (1) body when it comes in contact with back
down programming plate (2).
(1) Run Auto Operate function and observe.
If trip arm (A, Figure 4-36) bottoms out or does
not trip when it comes into contact with programming plate (2), back down program limit
switch (1) needs adjusted.
© Midmark Corporation 1999 SF-1606
Page 4-19
Printed in U.S.A.
Return To Table Of Contents
(2) Loosen two mounting screws (3) and adjust
back down program limit switch (1) up or down
as necessary. Tighten two mounting
screws (3).
4.14
SECTION IV
MAINTENANCE / SERVICE
Safety Bail Limit Switches
A. Removal
(1) Raise chair BASE UP function all way up.
(3) Check operation.
(2) Unplug chair power cord from wall outlet.
(3) Remove R.H. (1, Figure 4-37 ) and L.H. (2)
base covers (three screws each).
Figure 4-37. Safety Bail Limit Switches
(4) Remove center base cover (3) (four screws).
Figure 4-36. Back Down Program Limit Switch
(5) Remove L.H. (1, Figure 4-38), Center (2) and
R.H. (3) platform covers (4 screws).
Figure 4-38. Safety Bail Limit Switches
© Midmark Corporation 1999 SF-1606
Page 4-20
Printed in U.S.A.
Return To Table Of Contents
(6) Pull outward on one corner of bottom lift arm
cover (4) until it clears standoff (5). Repeat
step for other corner and remove cover (4).
SECTION IV
MAINTENANCE / SERVICE
(3) Loosen two mounting screws for limit switch
bracket (5), then push bottom of bracket (5)
toward foot end of chair as far as possible and
retighten screws.
(7) Disconnect wire harness (1, Figure 4-39) from
malfunctioning Safety Bail limit switch (2).
(4) Install bottom lift arm cover (4, Figure 4-38),
center (2), R.H. (3), and L.H. (1) platform covers (four screws).
(5) Install center base cover (1, Figure 4-37) (four
screws)
(6) Install R.H. (1) and L.H. (2) base covers (six
screws).
(7) Plug in chair and check operation. Press
upward on the center platform cover (4, Figure
4-38) as chair is descending. Chair should stop
descending.
Figure 4-39. Safety Bail Limit Switches
(8) Remove two mounting screws (3) and nuts (4)
and remove limit switch (2).
B. Installation
(1) Place limit switch (2, Figure 4-39) in position on
mounting bracket (5) and secure with two
mounting screws (3) and nuts (4).
(2) Attach wire harness (1).
WARNING
Actuator (A) on Safety Bail Limit
Switches (2) are operated when inside
surface of bottom lift arm cover comes in contact
with them. Position switch mounting brackets (5)
so actuators (A) contact cover. Failure to comply
could result in switches not operating and personal injury.
© Midmark Corporation 1999 SF-1606
Page 4-21
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
4.15
Membrane Switch Panel
(Biltmore Classic only)
4.16
Manual Footswitch
A. Removal
A. Removal
(1) Unplug chair power cord.
(1) Unplug chair power cord.
(2) Remove five screws (1, Figure 4-41), base plate
(2), and insulation (3) from footswitch
housing (4).
(2) Remove back upholstery (refer to para 4.2).
(3) Disconnect wire harness (1, Figure 4-40) from
membrane switch panel (2).
Figure 4-40. Membrane Switch Panel
(4) Peel membrane switch (2) off bezel (3).
Figure 4-41. Manual Footswitch
B. Installation
(3) Remove two nuts (5) and actuator (6) from two
studs (7).
(1) After removing protective backing from membrane switch, place switch in position on bezel
(3, Figure 4-40) and press firmly to adhere
switch to bezel.
(2) Connect wire harness (1) to membrane switch
panel (2).
(4) Remove footswitch (8); then tag and disconnect
wires (9) from footswitch (8).
B. Installation
(1) Connect wires (9, Figure 4-41) to terminals of
footswitch (8).
(3) Install back upholstery.
(4) Plug chair power cord into outlet and check
operation.
© Midmark Corporation 1999 SF-1606 Rev. 3/03
Page 4-22
Printed in U.S.A.
Return To Table Of Contents
(4) While simultaneously pushing in on four locking
tabs (A) of footswitch (6), push footswitch out of
footswitch housing (4).
(2) Install footswitch (8) and actuator (6) on studs
(7) and secure with two nuts (5).
(3) Install insulation (3) and base plate (2) on footswitch housing (4) and secure with five
screws (1).
(4) Plug in chair power cord.
4.17
Auto Exit / Operate Footswitch
A. Removal
SECTION IV
MAINTENANCE / SERVICE
B. Installation
EQUIPMENT ALERT
Make sure footswitch is installed in same
orientation as shown in illustration. Failure
to do so will result in incorrect actions when the Auto
Operate (Green) or Auto Exit (Yellow) functions are
selected.
(1) Unplug chair power cord.
(1) Push footswitch (6, Figure 4-42) into footswitch
housing (4) until it snaps into place and is fully
seated.
(2) Remove five screws (1, Figure 4-42), base
plate (2), and insulation (3) from footswitch
housing (4).
(2) Connect wires (5) to terminals of footswitch (6).
(3) Install insulation (3) and base plate (2) on footswitch housing (4) and secure with five
screws (1).
(4) Plug in chair power cord.
Figure 4-42. Auto Exit / Operate Footswitch
(3) Tag and disconnect wires (5) footswitch (6).
© Midmark Corporation 1999 SF-1606
Page 4-23
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
4.18
Rotational Brake
(Biltmore Classic only)
A. Removal
(1) Raise Base Up function all way up.
(2) Unplug chair power cord.
(3) Remove R.H. base cover (1, Figure 4-43)
(three screws).
(4) Place Brake lever (2) in Unlocked position.
(5) Remove disc lock (3), four screws.
(6) Remove brake block assembly (4).
Figure 4-44. Rotational Brake
B. Installation
NOTE
Inspect nylon tipped set screws (3, Figure 4-44). If
worn or damaged replace screws.
(1) Install two set screws (3, Figure 4-44)) in brake
block (1).
NOTE
When assembling brake block (1, Figure 4-44), position jam nut (4) on lock stud (5) so there is approximately 1/4" to 5/16" distance between jam nut (4) and
face of hex (A) on lock stud (5).
(2) Assemble brake block (1, Figure 4-44) and lock
stud (5).
Figure 4-43. Rotational Brake
(3) Insert brake block assembly (1, Figure 4-45)
into hole of upright housing assembly (2).
(7) Unscrew brake block (1,Figure 4-43) from lock
stud (2).
(4) Install disc lock (3) and secure with four screws.
(8) Remove two set screws (3) from brake
block (1).
© Midmark Corporation 1999 SF-1606 Rev. 3/03
Page 4-24
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
(5) Install R.H. base cover (4, Figure 4-44).
4.19
Headrest
A. Adjustment
(1) Raise Back Up function all way up.
(2) Remove back upholstery (refer to para 4.2).
(3) Loosen two jam nuts (1, Figure 4-46).
Figure 4-45. Rotational Brake
C. Adjustment
(1) Loosen two screws (4, Figure 4-45) that secure
rotational lock bracket (5) to upright housing
assembly (2).
(2) Position brake lever (6) so that it is at a 45°
angle as shown in illustration.
NOTE
Make sure brake shoe (A) is seated correctly against
disc lock (5). Nylon tipped set screws (7) must be
adjusted to hold brake block (1) in a level position to
prevent uneven wear on brake shoe (A) For adjustment to work correctly, brake lever must continue to
be pushed on firmly while screws are being tightened.
Figure 4-46. Headrest
EQUIPMENT ALERT
Tighten or loosen two adjustment screws
(2) evenly to allow for full and even surface
contact of friction tangs. Failure to do so could result
in uneven friction braking.
(4) If headrest assembly (A) slides down by itself or
moves too easily, tighten two adjustment
screws (2).
If headrest assembly (A) requires excessive
force to position, loosen two adjustment
screws (2).
(3) While pulling upward on brake lever (6), push
inward to force brake shoe (A) and set screws
(7) firmly against brake disc (6); then tighten
screws (4).
(5) Test friction setting by sliding headrest assembly (A) in and out. Repeat step (4) until desired
friction setting is achieved.
(4) Position brake lever in Brake position and
check adjustments.
© Midmark Corporation 1999 SF-1606
Page 4-25
Printed in U.S.A.
Return To Table Of Contents
SECTION IV
MAINTENANCE / SERVICE
(6) While holding adjustment screws (2) with a
wrench, tighten jam nuts (1).
(7) Install back upholstery.
© Midmark Corporation 1999 SF-1606
Page 4-26
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SECTION V
SCHEMATICS AND DIAGRAMS
5.1
Electrical Schematics / Wiring
Diagrams
the components in the 120 VAC chair. Figures 5-2 and 53 illustrate the main PC board plug connectors and
related circuitry. Figure 5-4 thru 5-6 show the main PC
board,TB1 terminal board, and related components.
Figure 5-1 illustrates the wiring connections between
J2 Pin Out - Chair Controls
Pin
1
2
3
4
5
6
7
8
Color
Black
Blue
Brown
Green
Orange
Red
White
Yellow
Function
12 Volt DC
Auto Exit
Auto Operate
Back Up
Back Down
Base Up
Base Down
Light Switch
J3 Pin Out - Foot Control
Pin
1
2
3
4
5
6
7
8
Color
Brown
Blue
Orange
Green
Black
Red
White
-
Function
12 Volt DC
Auto Exit
Auto Operate
Back Up
Back Down
Base Up
Base Down
Open
c
c
nc
nc
Safety
Bail Switch
c
Safety
c Bail Switch
nc
nc
J4 Pin Out for Program, Operation and Limit Switches
Pin Color
Function
1 Red
800 to 860 Ohms to
Ground
2 Black 800 to 860 Ohms to
Ground Base Up Program Operation Switch
Closed
3 Brown 800 to 860 Ohms to
Ground
4 Green 800 to 860 Ohms to
Ground Back Down Program Operation Switch
Closed
5 White 12 VDC from Back Up
Limit Switch
6 Red
12 VDC out to Back Up
Limit Switch
7 Black Return 12 VDC from
Back Up Limit Switch
8 Green Return 12 VDC from
Base Down Limit Switch
9 Red
12 VDC out to Base Up
and Base Down Limit
Switches
10 Black Return 12 VDC from
Base Up Limit Switch
1
J3 J2
1
Pin
1
2
3
4
5
6
7
8
Color
Red
White
Black
White
Blue
Green
Black
Black
J1
Pin
1
2
3
4
5
Color
White
Black
White
Black
Green/
Yellow
© Midmark Corporation 1999 SF-1606 Rev. 6/11
J4
1
1
J1
5
1
c
nc
c
c
nc
nc
nc
nc
J5
8
J5
c
c
c
nc
nc c
DA3240i
Figure 5-1. Wiring Diagram Biltmore Classic / *Concept LR Classic Dental Chair
(120 VAC Units) Thru Serial Number V160530
Page 5-1
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Back
Motor
Back Down
Program
Switch
Back Up
Limit Switch
c
c
151884
Top Motor
Cable Assy.
nc
nc
Safety
Bail Switch
c
Safety
c Bail Switch
nc
nc
1
8
J5
Chair Control PC Board
Base
Motor
Capacitor
Motor Fuse
10 A, 250 V,
Type F, Fast-Acting
Spare Fuse
10 Amp
J4
J3 J2
1
151293
Safety Limit
Harness
Line Input
Fuse
1/2 A. 250 V.
Spare
1/2 Amp
Fuse
1
J1
1
543 21
GN/YL
c
nc
WH
BK
BK
c
WH
c
nc
nc
WH
WH
nc
c
nc
c
Terminal Block
& Mounting Plate
BK
c
GN/YL
nc
nc
BK
Base
Motor
BK
c
Foot Control
WH
WH
Fuse F4
10 A, 250 VAC
Type F
Fast-Acting
120 VAC
60 HZ
8 AMP
BK
On / Off
Light
DA3241i
Figure 5-2. Wiring Diagram Biltmore Classic / *Concept L/R Classic Dental Chair (120 VAC Units)
From Serial Number V160531 thru V456962
© Midmark Corporation 1999 SF-1606 Rev. 6/11
Page 5-2
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Blk
Blk
3
Wht
(115 VAC Power Input)
Power
On / Off
Light
TB1
2
Wht
115 VAC
Supply
J1
F4 FUSE
Wht
Plug
Wht
Grn/yl
2
Wht
3
Blk
Grn/yl
Grn/yl
TB1
Grd
TB1
Grd
Grn
To Base
Motor
1
Blk
VAC Common
Models 152647-01
& 153102-01
From Serial Number
V160531 to V456962
120/240 VAC
Interface Pins
4
VAC Hot
5
AC Ground
Grn/yl
To Back
Motor
J1
(115 VAC Power Input)
Plug
TB1
Wht
2
115 VAC
Supply
Blk
3
Grn/yl
Wht
1
Blk
2
Wht
3
Blk
Grn/yl
Grn/yl
TB1
Grd
TB1
Grd
Grn
To Base
Motor
VAC Common
Models 152647-01
& 153102-01
Before Serial Number
V160531
120/240 VAC
Interface Pins
4
VAC Hot
5
AC Ground
Grn/yl
To Back
Motor
J2
12 VDC
Auto Exit
(12 VDC Membrane Switch Pads)
Auto Exit
Blk
Auto Operate
Auto
Operate
Blue
Brown
Back Up
Back Up
Grn
Orange
Back Down
Back Down
Red
Base Up
Wht
Yellow
Base Up
Base Down
1
2
12 VDC
3
Auto Operate
Auto Exit
4
Back Up
5
Back Down
6
Base Up
7
Base Down
8
Auxiliary
Auxiliary
Switch
Base Down
NOTE
For wiring diagrams from
Serial Number V456963
to Present refer to Main
PC Board (Figure 5-12).
TB1 Terminal Layout
1
Auxiliary
Switch
2
3
4
5
Switch Layout
(Not Operated)
Auto Exit
Yellow
Auto Operate
Green
Foot
Control
NO
(View from bottom side)
C
Plunger
NO
(To 12 VDC Foot Control Switch)
Brown
Brown
1
12 VDC
Blue
2
Auto Exit
Orange
3
Auto Operate
Grn
4
Back Up
Blk
5
Back Down
Red
6
Base Up
Wht
7
Base Down
Grn
Brown
Back
Up
Red
NO
C
Base
Up
Red
C
NO Blk
Brown
NO
Common
Terminal
Normally
Open
Switch Layout
(Operated)
Plunger
8
C
Brown
Base
Down C
NO
Contacts
Normally
Closed
J3
Blue
Orange
Grn
6
Membrane Switch Pads
(Right & Left Side)
Back
Down
Wht
Common
Terminal
Brown
Contacts
Normally
Closed
Normally
Open
Current Flow
Wht
KA913202
Figure 5-3. Main P.C. Board Plug Connectors ( J1, J2, J3 )
Biltmore Classic Dental Chair (120 VAC)
© Midmark Corporation 1999 SF-1606 Rev. 4/06
Page 5-3
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Base Up
Program
Operate
Limit Swt.
C
NC
NC
Back Down
Program
Operate
Limit Swt.
C
Red
Red
Blk
Blk
Brown
Brown
8
Grn
Grn
7
Wht
Wht
6
Red
5
Blk
4
Grn
3
Red
C
Back Up
Limit Swt.
Blk
TB1
6
Red
NC
Red
Red
Safety Bail
Limit Swt.
10
9
NC
Blk
C
Plug
J4
(To Limit Switches,
12 VDC)
2
Blk
1
Blk
Blk
NC
Safety Bail
Limit Swt.
Red
TB1 Terminal Layout
TB1
5
Blk
C
1
Blk
2
3
4
5
6
NC
Base Down
Limit Swt.
C
Base Up
Limit Swt.
Switch Layout
Red
C
Red
Blk
NC
NO
Red
Blk
NC
C
Grn/yl
Run Capacitor
25-30 Mfd
Grn/yl
Brn
Brn
C
Top
(Back)
Motor
Grn
Back Up
Limit Swt.
Yl
Thermal O/L
Grn
NC Red
Red
Red
Wht
Blue
C
Blue
NC Blk
Red
Red
1
Wht
Wht
2
Blk
Blk
3
Wht
4
Back Down
Limit Swt.
Blue
Grn
Base
Motor
J5
Base
Motor
(115 VAC Power
Output to Base
& Back Motors)
6
7
Wht
Red
Blue
Blue
Blk
Blk
Wht
Grn
8
Thermal O/L
Blk
Run Capacitor
53-64 Mfd
Grn/yl
The below readings are apprx. at cold
resistance conditions:
Red to Yellow = 15.5 ohms
Back
Blue to Yellow = 15.5 ohms
Motor
Red to Blue = 31.0 ohms
Base
Motor
5
Back
Motor
TB1
Red
Red to Blue = 7.1 ohms
Blue to Black = 9.5 ohms
Red to Black = 16.5 ohms
KA913302
Figure 5-4. Main P.C. Plug Connectors (J4, J5)
Biltmore Classic Dental Chair (120 VAC)
© Midmark Corporation 1999 SF-1606 Rev. 9/07
Page 5-4
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Connector for
Power Output
to Base and
Back Motors
NO
1/2-amp Lamp
Input Fuse
(1/4" D. x 1 1/14" L.
Slo-Blo, 250V, 1/2 Amp)
K3
Com
NO
K4
Com
K1
Com
NO
K2
Com
Base & Back
Motor Relays
NO
Back Down Back Up Base Down Base Up
1/2-amp Line P.C.
Board Input Fuse
(1/4" D. x 1 1/14" L.
Slo-Blo, 250V, 1/2 Amp)
Terminal Board (TBI)
U8
T1
F2
F1
J4
J3
Connector for
Foot Control
J2
Black
J1
White
Connector for
10-amp Line
Connector for
Line Power Input Spare
Spare Motor Fuse
Connector for Limit Switches
Fuse
Fuse (1/4" D. x 1 1/4" L.
Membrane
Fast-acting, 250V, 10 Amp)
Switch Panel
Line Fuse F4
10 A, 250 VAC
Type F, Fast-Acting
On / Off
Light
KA913501i
Line Fuse (F4) and On / Off Light on units with
Serial Numbers V160531 thru V2933935
Figure 5-5. Main P.C. Board Component and Plug Layout
Biltmore Classic Dental Chair (120 VAC)
© Midmark Corporation 1999 SF-1606 Rev. 8/07
Page 5-5
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Figure 5-6. 115 VAC Motor Circuit
© Midmark Corporation 1999 SF-1606 Rev. 4/06
Page 5-6
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Figure 5-7. 12 VDC Control Circuit (120 VAC Supply).
© Midmark Corporation 1999 SF-1606 Rev. 4/06
Page 5-7
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
J2 Pin Out for Membrane
Switch
Pin
1
2
3
4
5
6
7
8
Color
Black
Blue
Brown
Green
Orange
Red
White
Yellow
Function
12 Volt DC
Auto Exit
Auto Operate
Back Up
Back Down
Base Up
Base Down
Light Switch
J3 Pin Out for Foot Switch
Pin
1
2
3
4
5
6
7
8
Color
Brown
Blue
Orange
Green
Black
Red
White
-
Function
12 Volt DC
Auto Exit
Auto Operate
Back Up
Back Down
Base Up
Base Down
Open
c
c
nc
nc
Safety
Bail Switch
c
Safety
c Bail Switch
nc
nc
J4 Pin Out for Program, Operation and Limit Switches
1
J3 J2
1
J1
Color
White
Black
White
Black
Green/
Yellow
Pin
1
2
3
4
5
6
7
8
Color
Red
White
Black
White
Blue
Green
Black
Black
J4
1
1
J1
5
1
c
nc
c
c
nc
nc
nc
nc
c
c
c
nc
nc c
J5
Pin
1
2
3
4
5
8
J5
Pin Color
Function
1 Red
800 to 860 Ohms to
Ground
2 Black 800 to 860 Ohms to
Ground Base Up Program Operation Switch
Closed
3 Brown 800 to 860 Ohms to
Ground
4 Green 800 to 860 Ohms to
Ground Back Down Program Operation Switch
Closed
5 White 12 VDC from Back Up
Limit Switch
6 Red
12 VDC out to Back Up
Limit Switch
7 Black Return 12 VDC from
Back Up Limit Switch
8 Green Return 12 VDC from
Base Down Limit Switch
9 Red
12 VDC out to Base Up
and Base Down Limit
Switches
10 Black Return 12 VDC from
Base Up Limit Switch
DA3240i
Figure 5-8. Wiring Diagram Biltmore Classic / *Concept L/R Classic Dental Chair
(240 VAC Units) From Serial Number V160531 thru V456962
© Midmark Corporation 1999 SF-1606 Rev. 6/11
Page 5-8
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
J1
(240 VAC Power Input)
Plug
Brwn
TB1
Brwn
2
Blue
3
Blue
Grn
240 VAC
Supply
Blue
TB1
Grd
Grn/yl
Grn/yl
Grn
To Base
Motor
TB1
Grd
1
2
3
VAC Common
240 VAC
Interface Pins
4
VAC Hot
5
AC Ground
Grn/yl
To Back
Motor
J2
12 VDC
Auto Exit
(12 VDC Membrane Switch Pads)
Auto Exit
Blk
Auto Operate
Auto
Operate
1
Blue
Brown
Back Up
Back Up
Grn
Orange
Back Down
Back Down
Red
Base Up
Wht
Yellow
Base Up
Base Down
Auto Exit
3
Auto Operate
4
Back Up
5
Back Down
6
Base Up
7
Base Down
8
Auxiliary
Auxiliary
Switch
Membrane Switch Pads
(Right & Left Side)
Auto Exit
Yellow
Auto Operate
Green
C
NO
NO
J3
(To 12 VDC Foot
Control Switch)
Blue
Orange
Brown
Brown
1
12 VDC
Blue
2
Auto Exit
Auto Operate
(View from bottom side)
Grn
Brown
Back
Up
Red
NO
C
Base
Up
Orange
3
Grn
4
Back Up
Blk
5
Back Down
Red
6
Base Up
Wht
7
Base Down
Red
C
NO Blk
Brown
Grn
NOTE
For wiring diagrams from
Serial Number V456963
to Present refer to Main
PC Board (Figure 5-12).
Auxiliary
Switch
Base Down
Foot
Control
12 VDC
2
NO
8
TB1 Terminal Layout
1
2
3
4
Base
C
Down
NO
Back
Down
6
Switch Layout
NC
NO
C
Brown
5
Wht
C
Brown
KA915301i
Wht
Figure 5-9. Main P.C. Board Plug Connectors ( J1, J2, J3 )
Biltmore Classic Dental Chair (240 VAC)
© Midmark Corporation 1999 SF-1606 Rev. 4/06
Page 5-9
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Base Up
Program
Operate
Limit Swt.
C
NC
NC
Back Down
Program
Operate
Limit Swt.
C
Red
Red
1
Blk
Blk
2
Brown
Brown
3
Grn
Grn
4
Wht
Wht
5
Red
6
Blk
7
Grn
8
Red
C
Back Up
Limit Swt.
Blk
TB1
6
Red
NC
Red
Red
NC
Safety Bail
Limit Swt.
9
Blk
Blk
C
J4
(To Limit Switches,
12 VDC)
10
Plug
Blk
Blk
NC
Safety Bail
Limit Swt.
Red
TB1 Terminal Layout
TB1
5
Blk
C
1
Blk
2
3
4
5
6
NC
Base Down
Limit Swt.
Red
Blk
NC
NO
Red
C
Base Up
Limit Swt.
Switch Layout
Red
C
Blk
NC
C
Grn/yl
Run Capacitor
5.0 Mfd
Grn/yl
Brn
Brn
C
Top
(Back)
Motor
Grn
Back Up
Limit Swt.
Yl
Thermal O/L
Grn
NC Red
Red
Red
Wht
Blue
C
Blue
NC Blk
Red
Red
1
Wht
Wht
2
Blk
Blk
3
Wht
4
Back Down
Limit Swt.
Blue
Grn
Base
Motor
Back
Motor
Red to Yellow = 61.0 ohms
Blue to Yellow = 62.0 ohms
Red to Blue = 122.0 ohms
Base
Motor
Brown to Blue = 27.0 ohms
Blue to Black = 47.4 ohms
Brown to Black = 74.5 ohms
5
Back
Motor
J5
Base
Motor
(240VAC Power
Output to Base
& Back Motors)
6
7
Brown
Red
Blue
Blue
Blk
Blk
Wht
Grn
8
Thermal O/L
Grn/yl
TB1
Blk
Run Capacitor
12.5 Mfd
Red
KA915401
Figure 5-10. Main P.C. Plug Connectors (J4, J5)
Biltmore Classic Dental Chair (240 VAC)
© Midmark Corporation 1999 SF-1606 Rev. 9/07
Page 5-10
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Figure 5-11. Main P.C. Board Component and Plug Layout Biltmore Classic Dental Chair (240 VAC)
From Serial Number V160531 thru V456962
© Midmark Corporation 1999 SF-1606 Rev. 9/07
Page 5-11
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
TO
BACK
MOTOR
Wiring Diagram for Knight Chairs Models:
152375-01, 152267-01, 152647-01,
152723-01, 153039-01, 153085-01,
153102-01, 153335-01, 152192-01
From Serial V456963 to Present
TO
BASE
MOTOR
151885
Harness
151884
Harness
BACK
UP
BASE
DOWN
BACK
DOWN
COM.
RED
152210
Harness
BASE
UP
COM.
BK
BK
GN
WH
ON
LAMP
COM.
BK
WH
TO
LIGHT
TRANSFORMER
BL
1
TEST POINTS (TP)
Test Point on PCB
TP1 to TP2
TP1 to TP5
TP1 to TP6
TP1 to TP7
TP1 to TP8
TP1 to TP9
TP1 to TP10
TP1 to TP3
J1 Plug Pins 3 - 4
Checks:
12 VDC Supply for PCB
5 VDC to Base Up Program Limit
5 VDC to Back Down Program Limit
5 VDC to Back Down Limit
5 VDC to Back Up Limit
5 VDC to Base Down Limit
5 VDC to Base Up Limit
Supply Voltage 5 VDC
Supply Line Voltage VAC
J3 Connector
FOOT SWITCH
FUNCTION
PIN COLOR
8
OPEN
7 WHITE
BASE DOWN
BASE UP
6
RED
5 BLACK BACK DOWN
4 GREEN
BACK UP
3 ORANGE AUTO OPERATE
2
BLUE
AUTO EXIT
1 BROWN 12 VOLT DC
015-2140-01 120VAC
015-2140-03 240VAC
2
3
4
7
6
5
8
J5
Line Voltage
1
BACK UP K1
D1
Contacts
Open
Back Motor Fuse
LED
F3
BACK DOWN K2
D3
115V = 4A
230V = 2A
Contacts
Open
Fuses
Type T
Slo-Blo
LED
BASE DOWN K3
D5
Base Motor Fuse
Contacts
Open
TP2
+12V
LED
F2
BASE UP K4
D7
115V = 4A
230V = 2A
Contacts
Open
Fuses
Type T
Slo-Blo
LED
TP1
GND
D9
+ 5V
TP3
LAMP K5
Light Fuse
Contacts
Open
LED
PCB
115 VAC
230 VAC
015-2140-01 015-2140-03
F1
015-0346-14 015-0346-37
F2, F3 015-0346-01 015-0346-34
F5
015-0346-39 015-0346-38
F6, F7 015-0346-19 015-0346-01
Fuse
F5
115V = 315 mA
230V = 160 mA
1
RS232
Plug
J8
D12
LED
Diagnostics
L1
SIGNAL
TRANSFORMER
Programming
Header
MP1
J7
SUPPLY
LINE FUSES
T1
TRANSFORMER
1
Programming
Clock
Fuses
Type T
Slo-Blo
TP8
TP6
TP4
F7
+12V
FOOT CONTROL
SWITCH J3
+12V
MEMBRANE
SWITCH J2
87 65 4 32 1
WHITE
87 65 4 32 1
BLACK
TP7
Power
On / Off
Light
Fuses
F6
F1 Type T
Slo-Blo
TP10
L2
TP5
T1
TRANSFORMER
TP9
+12V
LIMIT SWITCH
J4
10 9 8 7 6 5 4 3 2 1
L1
115V = 8A
230V = 4A
115V = 125mA
230V = 50 mA
1
J1
Line Voltage
WHITE
BL
5 J1
1
BR
151383
Harness
To Safety
Bail Limit
Switches
151293
To J4 on
PC Board
151383
BR
J4 Connector
BL
PROGRAM, OPERATION, & LIMIT SWITCHES
G/Y
PIN
COLOR
FUNCTION
Return 12 VDC From Base Up
1
BLACK
2
RED
3
GREEN
4
BLACK
5
RED
6
WHITE
7
GREEN
Return 12 VDC from Back Down
Program Limit Swt.
8
BROWN
12 VDC To Base Down Program
Limit Switch (Common)
9
BLACK
Return 12 VDC From Base Up
Program Limit Switch.
10
RED
12 VDC To Base Up Program
Limit Switch (Common).
12 VDC To Base Up & Down (Common)
BR
BL
BK
R
015-2155-00
Power Harness
G
Return 12 VDC From Base Down
Base Up
Base Down
Limit Switches
Return 12 VDC From Back Up
12 VDC to Back Up Limit Switch (Common)
Jumper to Pin 5
BR
G/Y
BL
Chair Terminal
Block &
Mounting Plate
To Supply
Power
Figure 5-12. Main P.C. Board Component and Plug Layout Biltmore Classic Dental Chair (120 & 240 VAC)
From Serial Number V456963 to Present
© Midmark Corporation 1999 SF-1606 9/12
Page 5-12
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
DA186700i
Figure 5-13. Wire Harness Diagram Chart
From Serial Number V456963 to Present
© Midmark Corporation 1999 SF-1606 9/07
Page 5-13
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Figure 5-12. 240 VAC Motor Circuit
© Midmark Corporation 1999 SF-1606 Rev. 4/06
Page 5-14
Printed in U.S.A.
Return To Table Of Contents
SECTION V
SCHEMATICS AND DIAGRAMS
Figure 5-13. 12 VDC Control Circuit. (240 VAC Supply)
© Midmark Corporation 1999 SF-1606 Rev. 4/06
Page 5-15
Printed in U.S.A.
Return To Table Of Contents
SECTION VI
PARTS LIST
SECTION VI
PARTS LIST
6.1
Introduction
The Description column provides a physical description
of the component.
The illustrated parts list provides information for identifying and ordering the parts necessary to maintain the
unit in peak operating condition. Refer to paragraph 1.5
for parts ordering information.
6.2
Description of Columns
The Item column of the parts list gives a component its
own unique number. The same number is given to the
component in the parts illustration. This allows a part
number of a component to be found if the technician
can visually spot the part on the illustration. The technician simply finds the component in question on the illustration and notes the item number of that component.
Then, he finds that item number in the parts list. The
row corresponding to the item number gives the technician the part number, a description of the component,
and quantity of parts per subassembly. Also, if a part
number is known, the location of that component can be
determined by looking for the item number of the component on the illustration.
The Part No. column lists the MIDMARK part number
for that component.
The Qty. column lists the number of units of a particular
component required for the subassembly. The letters
“AR” denote “as required” when quantities of a particular component cannot be determined, such as: adhesive.
Bullets { • } in the Part No. column and the Description
column show the indenture level of a component. If a
component does not have a bullet, it is a main component of that illustration. If a component has a bullet, it is
a subcomponent of the next component listed higher in
the parts list than itself that does not have a bullet. Likewise, if a component has two bullets, it is a subcomponent of the next component listed higher in the parts list
than itself that has only one bullet.
6.3
Torque Specifications and Important
Assembly Notes
When specific assembly torque specifications, measurements, or procedures have been identified, by our
engineering department, as required to assure proper
function of the unit, those torque specifications measurements, and procedures will be noted on the parts
illustrations. Adherence to these requirements is essential.
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Page 6-1
Printed in U.S.A.
Return To Table Of Contents
Pictorial Index
SECTION VI
PARTS LIST
NOTE: This model uses Sterling Grey painted components that are no longer available.
Substitute Pebble Grey painted parts, located in manual, when necessary.
KA916601
Used on units with Serial Number CP1000 thru Present
Item
1
2
3
4
5
6
7
8
Part No.
Description
152647
153102
152723
153039
153335
Biltmore Classic (120-volt w/ Rotation)
Biltmore Classic Concept LR (120-volt)
Biltmore Classic (240-volt w/ Rotation)
Biltmore Classic (240-volt Non-Rotation)
Biltmore Classic Concept LR (240-volt)
• Upholstery Components (Vacuum
Form) ............................................... 6-4
• Upholstery Components (Plush)...... 6-6
• Covers ............................................. 6-8
• Seat Components .......................... 6-10
• Back Components ......................... 6-12
• Top Electrical Components ............ 6-14
• Top Motor Assembly ...................... 6-16
• Base Components (Rotational) ..... 6-17
• Base Components (NonRotational)6-19
• Base Electrical Components ......... 6-21
Page
Item
Part No.
9
10
11
Description
Page
• Base Motor Assembly ....................6-22
• Footswitch ......................................6-23
• Umbilicals (LR Units)......................6-25
OPTIONAL ACCESSORIES
12
13
14
15
16
17
18
19
153199
152634***
154043***
154042***
152509
152284
152538
152565
Single Articulating Headrest .............6-29
Double Articulating Headrest ............6-27
Pediatric Headrest w/ Pillow ............... n/a
Pediatric Headrest w/o Pillow ............. n/a
Unit Mount .......................................... n/a
Chair Mount Adapter w/18" Post......... n/a
48" Light Post w/ Mount ...................... n/a
IV Armboard .....................................6-31
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 12/09
Page 6-2
Printed in U.S.A.
Return To Table Of Contents
Pictorial Index
SECTION VI
PARTS LIST
NOTE: This model uses Pebble Grey painted components.
KA916601
Used on units with Serial Number PB1000 thru Present
Used on units with Serial Number V2200 thru Present
Item
1
2
3
4
5
6
7
8
Part No.
Description
152647-01
153102-01
152723-01
153039-01
153335-01
Biltmore Classic (120-volt w/ Rotation)
Biltmore Classic Concept LR (120-volt)
Biltmore Classic (240-volt w/ Rotation)
Biltmore Classic (240-volt Non-Rotation)
Biltmore Classic Concept LR (240-volt)
• Upholstery Components (Vacuum
Form) ............................................... 6-5
• Upholstery Components (Plush)...... 6-7
• Covers ............................................. 6-9
• Seat Components .......................... 6-11
• Back Components ......................... 6-13
• Top Electrical Components ............ 6-15
• Top Motor Assembly ...................... 6-16
• Base Components (Rotational) ..... 6-18
• Base Components (NonRotational)6-20
• Base Electrical Components ......... 6-21
Page
Item
Part No.
9
10
11
Description
Page
• Base Motor Assembly ....................6-22
• Footswitch ......................................6-24
• Umbilicals (LR Units)......................6-26
OPTIONAL ACCESSORIES
12
13
14
15
16
17
18
19
154078-***
154087-***
154043***
154042***
152509-01
152284-01
152538-01
154088-***
Single Articulating Headrest .............6-30
Double Articulating Headrest ............6-28
Pediatric Headrest w/ Pillow ............... n/a
Pediatric Headrest w/o Pillow ............. n/a
Unit Mount .......................................... n/a
Chair Mount Adapter w/18" Post......... n/a
48" Light Post w/ Mount ...................... n/a
IV Armboard .....................................6-32
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 2/04
Page 6-3
Printed in U.S.A.
Return To Table Of Contents
Upholstery Components (Vacuum Form)
SECTION VI
PARTS LIST
Color Selector......www.midmark.com
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
KA915700
Item
1
2
3
Part No.
Description
154033xxx
Vacuum Form Upholstery Kit (Includes
Items 1 thru 22) ..................................... 1
• Back Rest Upholstery ......................... 1
• Arm Rest Cushion............................... 2
• RH Arm Rest Assy (Includes Items ... 4
thru 12) (Shown Exploded) ................. 1
• LH Arm Rest Assy (Includes Items .... 4
thru 12) ............................................... 1
• • Arm Rest Support (1 per Arm Rest) 2
• • Plunger Housing (1 per Arm Rest) ... 2
• • Spring (1 per Arm Rest) ................... 2
• • Plunger (1 per Arm Rest) ................. 2
• • Stop Plate (1 per Arm Rest) ............. 2
• • Screw (1 per Arm Rest).................... 2
• • Retainer Disk (1 per Arm Rest) ........ 2
• • Thrust Race (2 per Arm Rest) .......... 4
• • Support Hub (1 per Arm Rest) ......... 2
• 152653xxx
• 152636Vxx
• 152637
• 152638
4
5
6
7
8
9
10
11
12
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
(N.L.A.)
122006-2
121997
121996-3
122007-50
120950
121954-50
119034
152674-50
Qty
Item
Part No.
13
• 122943
148503
• 152654xxx
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Description
Qty
• Foot Rest Cover (velcro- shown) .........1
Foot Rest Cover (elastic- not shown) ..1
• Seat Rest Assy (Includes Items 15
thru 20) ................................................1
• • 121919-50
• • RH Roller Bracket .............................1
• •121077
• • Screw ................................................6
• • 121920-50
• • LH Roller Bracket ..............................1
• • 061-0041-00 • • Law Label..........................................1
• • 300067
• • CA Compliance Label .......................1
• • 300116
• • Caution Label....................................1
• 118796
• Screw...................................................4
• 120718
• Screw...................................................4
154029xxx
Head Rest (Includes Items 24 thru 27) ..1
• 152456xxx
• Back Board ..........................................1
• 152457xxx
• Magnetic Pillow....................................1
• 121536
• Cover, Back [Sterling]](Not Shown) ....1
• 275184
• Tape, Foam (Not Shown).................2 ft.
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 12/09
Page 6-4
Printed in U.S.A.
Return To Table Of Contents
Upholstery Components (Vacuum Form)
SECTION VI
PARTS LIST
KA915700
Color Selector......www.midmark.com
NOTE: This model uses Pebble Grey painted components.
Item
1
2
3
Part No.
Description
154075-xxx
Vacuum Form Upholstery Kit (Includes
Items 1 thru 22)......................................1
• Back Rest Upholstery ..........................1
• Arm Rest Cushion ...............................2
• RH Arm Rest Assy (Includes Items 4
thru 12) (Shown Exploded)..................1
• LH Arm Rest Assy (Includes Items 4
thru 12) ................................................1
• • Arm Rest Support (1 per Arm Rest) 2
• • Plunger Housing (1 per Arm Rest)....2
• • Spring (1 per Arm Rest)....................2
• • Plunger (1 per Arm Rest) ..................2
• • Stop Plate (1 per Arm Rest)..............2
• • Screw (1 per Arm Rest) ....................2
• • Retainer Disk (1 per Arm Rest).........2
• • Thrust Race (2 per Arm Rest)...........4
• • Support Hub (1 per Arm Rest) ..........2
• 154093-xxx
• 152636V-xxx
• 152637-01
• 152638-01
4
5
6
7
8
9
10
11
12
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
152675-50
122006-2
121997
121996-3
122007-50
120950
121954-50
119034
152674-50
Qty
Item
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Part No.
Description
Qty
• 122943
148503
• 154082-xxx
• Foot Rest Cover (velcro- shown)......... 1
Foot Rest Cover (elastic- not shown) .. 1
• Seat Rest Assy (Includes Items 15
thru 20)1
• • 121919-00
• • RH Roller Bracket ............................. 1
• •121077
• • Screw................................................ 6
• • 121920-00
• • LH Roller Bracket ............................. 1
• • 061-0041-00 • • Law Label ......................................... 1
• • 300067
• • CA Compliance Label....................... 1
• • 300116
• • Caution Label ................................... 1
• 118796
• Screw .................................................. 4
• 120718
• Screw .................................................. 4
154077-xxx
Head Rest (Includes Items 24 and 25) .. 1
• 154090-xxx
• Back Board.......................................... 1
• 154089-xxx
• Magnetic Pillow ................................... 1
• 121536-01
• Cover, Back [Pebble] (Not Shown) ...... 1
• 275184
• Tape, Foam (Not Shown) ................ 2 ft.
.
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 3/09
Page 6-5
Printed in U.S.A.
Return To Table Of Contents
Upholstery Components (Plush)
SECTION VI
PARTS LIST
KA915701
Color Selector......www.midmark.com
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
Item
1
2
3
Part No.
Description
154046xx
Plush Upholstery Kit (Includes Items
1 thru 22) ............................................... 1
• Back Rest Upholstery ......................... 1
• Arm Rest Cushion............................... 2
• RH Arm Rest Assy (Includes Items 4
thru 12) (Shown Exploded) ................. 1
• LH Arm Rest Assy (Includes Items 4
thru 12)................................................ 1
• • Arm Rest Support (1 per Arm Rest) 2
• • Plunger Housing (1 per Arm Rest) ... 2
• • Spring (1 per Arm Rest) ................... 2
• • Plunger (1 per Arm Rest) ................. 2
• • Stop Plate (1 per Arm Rest) ............. 2
• • Screw (1 per Arm Rest) .................... 2
• • Retainer Disk (1 per Arm Rest) ........ 2
• • Thrust Race (2 per Arm Rest) .......... 4
• • Support Hub (1 per Arm Rest) ......... 2
• 153317xx
• 153316xx
• 152637
• 152638
4
5
6
7
8
9
10
11
12
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
152675-50
122006-2
121997
121996-3
122007-50
120950
121954-50
119034
152674-50
Qty
Item
Part No.
13
• 122943
148503
• 153318xx
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Description
Qty
• Foot Rest Cover (velcro- shown) .........1
Foot Rest Cover (elastic- not shown) ..1
• Seat Rest Assy (Includes Items 15
thru 20)1
• • 121919-50
• • RH Roller Bracket .............................1
• •121077
• • Screw ................................................6
• • 121920-50
• • LH Roller Bracket ..............................1
• • 061-0041-00 • • Law Label..........................................1
• • 300067
• • CA Compliance Label .......................1
• • 300116
• • Caution Label....................................1
• 118796
• Screw...................................................4
• 120718
• Screw...................................................4
Head Rest (Includes Items 24 thru 27) ..1
154048xx
• 153320xx
• Back Board ..........................................1
• Magnetic Pillow....................................1
• 153319xx
• 121536
• Cover, Back [Sterling] (Not Shown) .....1
• 275184
• Tape, Foam (Not Shown).................2 ft.
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 12/09
Page 6-6
Printed in U.S.A.
Return To Table Of Contents
Upholstery Components (Plush)
SECTION VI
PARTS LIST
KA915701
Color Selector......www.midmark.com
NOTE: This model uses Pebble Grey painted components.
Item
1
2
3
Part No.
Description
154076-xxx
Plush Upholstery Kit (Includes Items
1 thru 22) ...............................................1
• Back Rest Upholstery ..........................1
• Arm Rest Cushion ...............................2
• RH Arm Rest Assy (Includes Items 4
thru 12) (Shown Exploded)..................1
• LH Arm Rest Assy (Includes Items 4
thru 12) ................................................1
• • Arm Rest Support (1 per Arm Rest) 2
• • Plunger Housing (1 per Arm Rest)....2
• • Spring (1 per Arm Rest)....................2
• • Plunger (1 per Arm Rest)..................2
• • Stop Plate (1 per Arm Rest)..............2
• • Screw (1 per Arm Rest) ....................2
• • Retainer Disk (1 per Arm Rest).........2
• • Thrust Race (2 per Arm Rest)...........4
• • Support Hub (1 per Arm Rest) ..........2
• 154094-xxx
• 153316-xxx
• 152637-01
• 152638-01
4
5
6
7
8
9
10
11
12
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
152675-50
122006-2
121997
121996-3
122007-50
120950
121954-50
119034
152674-50
Qty
Item
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Part No.
Description
Qty
• 122943
148503
• 154095-xxx
• Foot Rest Cover (velcro- shown)......... 1
Foot Rest Cover (elastic- not shown) .. 1
• Seat Rest Assy (Includes Items 15
thru 20) ............................................... 1
• • 121919-00
• • RH Roller Bracket............................. 1
• •121077
• • Screw ............................................... 6
• • 121920-00
• • LH Roller Bracket ............................. 1
• • 061-0041-00 • • Law Label ......................................... 1
• • 300067
• • CA Compliance Label....................... 1
• • 300116
• • Caution Label ................................... 1
• 118796
• Screw .................................................. 4
• 120718
• Screw .................................................. 4
154077-xxx
Head Rest (Includes Items 24 and 25) .. 1
• 154092-xxx
• Back Board ......................................... 1
• 154091-xxx
• Magnetic Pillow ................................... 1
• 121536-01
• Cover, Back [Pebble] (Not Shown) ...... 1
• 275184
• Tape, Foam (Not Shown) ................ 2 ft.
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 4/08
Page 6-7
Printed in U.S.A.
Return To Table Of Contents
Covers
SECTION VI
PARTS LIST
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
Item
1
2
3
4
5
6
7
8
9
10
11
12
Part No.
Description
121904
122069
121026
121888
122623
121971
134969
121980-50
121972
122357
121887-2
121963-2
040-0010-183
RH Platform Cover................................. 1
RH Base Cover ...................................... 1
Lower Arm Cover ................................... 1
Center Base Cover (Biltmore Classic) ... 1
Center Base Cover (Concept L/R Clas.) 1
Nut Clip .................................................. 4
Electrical Shock Label ........................... 1
Screw..................................................... 4
Nut Clip .................................................. 2
Locknut .................................................. 2
Cover Mounting Bracket ........................ 2
Cover Mounting Bracket ........................ 2
Screw..................................................... 6
Qty
Item
KA915200
Part No.
Description
13
14
15
16
17
18
19
20
21
22
121890
121526
121980-50
134550
TP1445
121981-50
121905
119610
121027
121903
23
24
• 275479
117977
LH Base Cover ...................................... 1
Name Plate ........................................... 2
Screw .................................................... 6
Plastic Sleeve ........................................ 1
Wiring Diagram ..................................... 1
Screw .................................................... 4
LH Platform Cover................................. 1
Standoff ................................................. 4
Upper Arm Cover .................................. 1
Center Platform Cover (Includes
Item 23) ................................................. 1
• Foam Spacer Material ..................... AR
Self-Clinch Nut ...................................... 4
Qty
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 8/14
Page 6-8
Printed in U.S.A.
Return To Table Of Contents
Covers
SECTION VI
PARTS LIST
NOTE: This model uses Pebble Grey painted components.
KA915200
Used on units with Serial Number V2200 thru V160530
Item
Part No.
Description
Qty
1
2
3
4
5
6
7
8
9
10
11
12
121904-01
122069-01
121026-01
122623-01
121971
561-0262-01
105480
121972
122357
121887-2
121963-2
040-0010-183
RH Platform Cover .................................1
RH Base Cover ......................................1
Lower Arm Cover ...................................1
Center Base Cover.................................1
Nut Clip ..................................................4
Electrical Shock Label............................1
Screw .....................................................4
Nut Clip ..................................................2
Locknut ..................................................2
Cover Mounting Bracket.........................2
Cover Mounting Bracket.........................2
Screw .....................................................6
Item
Part No.
Description
Qty
13
14
15
16
17
18
19
20
21
22
121890-01
061-0803-00
121980-50
134550
TP1445
121981-50
121905-01
119610
121027-01
121903-01
23
24
• 275479
117977
LH Base Cover ...................................... 1
Name Plate............................................ 2
Screw..................................................... 6
Plastic Sleeve ........................................ 1
Wiring Diagram...................................... 1
Screw..................................................... 4
LH Platform Cover ................................. 1
Standoff ................................................. 4
Upper Arm Cover................................... 1
Center Platform Cover (Includes
Item 23) ................................................. 1
• Foam Spacer Material...................... AR
Self-Clinch Nut ...................................... 4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Rev. 8/14
Page 6-9
Printed in U.S.A.
Return To Table Of Contents
SECTION VI
PARTS LIST
Covers
24
23
2
1
22
21
20
19
25
18
9
10
17
11
6
8
16
15
14
3
4
12
5
13
7
NOTE: This model uses Pebble Grey painted components.
DA173400i
Used on units with Serial Number V160531 thru V456962
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
Part No.
121904-01
122069-01
121026-01
122623-01
121971
561-0262-01
105480
121972
122357
121887-2
121963-2
040-0010-183
122075-01
053-1584-00-216
Description
Qty
RH Platform Cover ........................... 1
RH Base Cover ................................ 1
Lower Arm Cover ............................. 1
Center Base Cvr. (Concept L/R Clas.)1
Nut Clip ............................................ 4
Electrical Shock Label...................... 1
Screw ............................................... 4
Nut Clip ............................................ 2
Locknut ............................................ 2
Cover Mounting Bracket................... 2
Cover Mounting Bracket................... 2
Screw ............................................... 6
LH Base Cover (120 VAC, 2 hole).... 1
LH Base Cover (240 VAC, 3 hole) ... 1
Item
Part No.
Description
14
15
16
17
18
19
20
21
22
23
061-0808-05
061-0808-06
061-0803-00
121980-50
134550
TP1445
121981-50
121905-01
119610
121027-01
121903-01
24
25
• 275479
117977
Label, Fuse Replacement (120 VAC......1
Label, Fuse Replacement (240 VAC).....1
Name Plate ............................................2
Screw .....................................................6
Plastic Sleeve.........................................1
Wiring Diagram ......................................1
Screw .....................................................4
LH Platform Cover .................................1
Standoff..................................................4
Upper Arm Cover ...................................1
Center Platform Cover (Includes
Item 24)..................................................1
• Foam Spacer Material ......................AR
Self-Clinch Nut .......................................4
Qty
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 8/14
Page 6-9.1
Printed in U.S.A.
Return To Table Of Contents
SECTION VI
PARTS LIST
Covers
24
23
1
22
21
20
19
14
18
9
10
17
11
6
8
16
15
3
4
12
5
7
13
NOTE: This model uses Pebble Grey painted components.
Used on units with Serial Number V456963 thru Present
Item
Part No.
1
2A
2B
3
4
5
6
7
8
9
10
11
12
121904-01
122069-01
121889-01
121026-01
122623-01
121971
561-0262-01
105480
121972
122357
121887-2
121963-2
040-0010-183
Description
Qty
RH Platform Cover ........................... 1
Base Cover (non-rotation)
1
Base Cover....................................... 1
Lower Arm Cover .............................. 1
Center Base Cvr. (Concept L/R Clas.)1
Nut Clip............................................. 4
Electrical Shock Label ...................... 1
Screw ............................................... 4
Nut Clip............................................. 2
Locknut ............................................. 2
Cover Mounting Bracket ................... 2
Cover Mounting Bracket ................... 2
Screw ............................................... 6
Item
Part No.
13
14
15
16
17
18
19
20
21
22
23
053-1807-00-216 Base Cover ....................................... 1
117977
Self-Clinch Nut .................................... 4
061-0803-00
Name Plate............................................ 2
121980-50
Screw .................................................... 6
134550
Plastic Sleeve ........................................ 1
TP1445
Wiring Diagram...................................... 1
121981-50
Screw .................................................... 4
121905-01
LH Platform Cover ................................. 1
119610
Standoff ................................................. 4
121027-01
Upper Arm Cover .................................. 1
121903-01
Center Platform Cover (Includes
Item 24) ................................................. 1
• 275479
• Foam Spacer Material ..................... AR
24
Description
Qty
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 8/14
Page 6-9.2
Printed in U.S.A.
Return To Table Of Contents
Seat Components
SECTION VI
PARTS LIST
6
1
2
5
3
4
32
7
29
8
A
30
28
31
9
33
27
34
10
A
11
12
15
18
13
15
22
14
39
17
16
38
19
21
20
37
14
19
36
23
7
35
25
26
26
24
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Part No.
Description
121951-6
152624-50
102127
119737-1
119738-1
RH Hip Post Assy (Includes Item 15)..... 1
Platform Assy......................................... 1
Screw..................................................... 2
LH Bracket ............................................. 1
RH Bracket............................................. 1
Top Motor Assembly (See “Top Motor
Assembly” Elsewhere) ........................... 1
Retaining Ring ....................................... 4
Top Motor Pin......................................... 1
Nylon Bushing........................................ 2
Thumb Screw......................................... 1
Washer .................................................. 1
Clamping Plate .................................. N/A
Adjustable Plate..................................... 1
RH Seat Support Assy (Includes Items
15 and 16) (Shown Exploded) ............... 1
LH Seat Support Assy (Includes Items
15 and 16) ........................................... 1
• Flange Bearing (1 per Assy) ............... 4
• Bearing Cover (1 per Assy) ................. 2
Washer (Refer to “Top Motor Assembly”
elsewhere) ............................................. 1
042-0007-00
119741-2
053-0114-00
149730
P1673
121930-50
121931-50
152628
152629
15
16
17
• 121923
• 121924-1
Qty
Item
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
KA914901i
Part No.
Description
Qty
121928-50
(N.L.A.)
121969-50
119610
119745
121921-2
112383-6
C6699
121967
121985-50
122816
C1079
122357
119537
106657
C2563
118249-2
121934
121942-2
121929-50
C4983
121952-6
Program Switch Plate1
Hole Plug............................................... 4
Hole Plug............................................... 1
Standoff ................................................. 1
E-Ring ................................................... 2
Tow Bar Shaft ........................................ 1
Legrest Support Roller .......................... 2
O-Ring ................................................... 2
Push Cap Nut ........................................ 4
Hole Plug............................................... 2
Set Screw .............................................. 2
Nut......................................................... 2
Lock Nut ................................................ 2
Lock Washer ......................................... 2
Screw .................................................... 8
Lock Washer ......................................... 8
Leg Rest Hinge ..................................... 2
Tow Bar Roller ....................................... 2
Tow Bar Roller Shaft.............................. 2
Limit Switch Plate .................................. 1
Screw .................................................... 4
LH Hip Post Assy (Includes Item 15)..... 1
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Rev. 12/09
Page 6-10
Printed in U.S.A.
Return To Table Of Contents
Seat Components
SECTION VI
PARTS LIST
6
1
2
5
3
4
32
7
10
40
29
8
A
30
28
31
9
33
27
34
A
11
12
15
18
13
15
22
14
39
17
16
38
19
21
20
37
14
19
36
23
7
35
25
24
26
26
NOTE: This model uses Pebble Grey painted components.
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Part No.
Description
121951-01
152624-00
102127
119737-50
119738-50
RH Hip Post Assy (Includes Item 15) .... 1
Platform Assy ........................................ 1
Screw .................................................... 2
LH Bracket............................................. 1
RH Bracket ............................................ 1
Top Motor Assembly (See “Top Motor
Assembly” Elsewhere)........................... 1
Retaining Ring....................................... 4
Top Motor Pin ........................................ 1
Nylon Bushing ....................................... 2
Thumb Screw ........................................ 1
Washer .................................................. 1
Clamping Plate (Obsolete) .................N/A
Adjustable Plate .................................... 1
RH Seat Support Assy (Includes Items
15 and 16) (Shown Exploded)............... 1
LH Seat Support Assy (Includes Items
15 and 16) .......................................... 1
• Flange Bearing (1 per Assy)............... 4
• Bearing Cover (1 per Assy) ................ 2
Washer (Refer to “Top Motor Assembly”
elsewhere)............................................. 1
Program Switch Plate ......................... 1
042-0007-00
119741-2
053-0114-00
149730
P1673
121930-50
121931-50
152628-01
152629-01
15
16
17
• 121923
• 121924-50
18
121928-50
Qty
Item
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
KA914901i
Part No.
Description
Qty
053-1333-50
120236
119610
119745
121921-2
112383-6
C6699
121967
053-1334-50
122816
C1079
122357
119537
106657
C2563
118249-2
121934
121942-2
121929-50
040-0375-76
121952-01
045-0001-04
Hole Plug ............................................... 4
Hole Plug ............................................... 1
Standoff ................................................. 1
E-Ring.................................................... 2
Tow Bar Shaft ........................................ 1
Legrest Support Roller........................... 2
O-Ring ................................................... 2
Push Cap Nut ........................................ 4
Hole Plug ............................................... 2
Set Screw .............................................. 2
Nut ......................................................... 2
Lock Nut................................................. 2
Lock Washer .......................................... 2
Screw ..................................................... 8
Lock Washer .......................................... 8
Leg Rest Hinge ...................................... 2
Tow Bar Roller ....................................... 2
Tow Bar Roller Shaft .............................. 2
Limit Switch Plate .................................. 1
Screw ..................................................... 4
LH Hip Post Assy (Includes Item 15) ..... 1
Lockwasher............................................ 1
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 04/10
Page 6-11
Printed in U.S.A.
Return To Table Of Contents
Back Components
SECTION VI
PARTS LIST
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
Item
Part No.
Description
1
(N.L.A.)
Chair Back [With switch mtg. holes] ......
(Biltmore Classic Only) ..........................1
Chair Back [Without switch mtg. holes]
(Concept L/R Classic Only)....................1
Fixed Tang Guide ...................................1
Floating Tang Guide ...............................1
Tang Guide Compensator ......................2
Nut .........................................................2
Screw .....................................................2
Screw .....................................................3
Tang Guide Plate Assembly
(Includes Items 9 thru 11) ......................1
• Headrest Adjustment Label .................1
(N.L.A.)
2
3
4
5
6
7
8
121943
120975
120976
P1215
108850
040-0010-144
152094
9
• 121055
Qty
KA915100
Item
Part No.
Description
Qty
10
11
• 120955-50
• 120981
• Tang Guide Plate ................................ 1
• Tang Bearing....................................... 1
12
13
14
15
16
17
18
19
20
275505
121967
121926-2
120102
(N.L.A.)
121944
121927-00
108965
122021
Velcro Loop............................................ 2
Push Nut Cap ........................................ 2
Pin ......................................................... 2
Set Screw .............................................. 4
Hole Plug ............................................ 2
Flat Washer ........................................... 2
Hip Pin ................................................... 2
Bumper .................................................. 1
Elevator Bolt .......................................... 4
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 12/09
Page 6-12
Printed in U.S.A.
Return To Table Of Contents
Back Components
SECTION VI
PARTS LIST
NOTE: This model uses Pebble Grey painted components.
KA915100
Item
1
Part No.
Description
121966-00
Chair Back [With switch mtg. holes]
(Biltmore Classic Only).......................... 1
Chair Back [Without switch mtg. holes]
(Concept L/R Classic Only) ................... 1
Fixed Tang Guide .................................. 1
Floating Tang Guide .............................. 1
Tang Guide Compensator ..................... 2
Nut......................................................... 2
Screw .................................................... 2
Screw .................................................... 3
Tang Guide Plate Assembly
(Includes Items 9 thru 11) ..................... 1
121881-00
2
3
4
5
6
7
8
121943
120975
120976
P1215
108850
040-0010-144
152094-01
Qty
Item
9
10
11
12
13
14
15
16
17
18
19
20
Part No.
Description
Qty
• 121055
• 120955-50
• 120981
275505
121967
121926-2
120102
053-1333-50
121944
121927-00
108965
122021
• Headrest Adjustment Label ................. 1
• Tang Guide Plate................................. 1
• Tang Bearing ....................................... 1
Velcro Loop ............................................ 2
Push Nut Cap ........................................ 2
Pin.......................................................... 2
Set Screw .............................................. 4
Hole Plug ............................................... 2
Flat Washer............................................ 2
Hip Pin ................................................... 2
Bumper (Used on earlier units).............. 1
Elevator Bolt........................................... 4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Rev. 12/07
Page 6-13
Printed in U.S.A.
Return To Table Of Contents
Top Electrical Components
SECTION VI
PARTS LIST
15
19
20
18
1
17
16
2
14
3
12
13
4
Old Style
5
7
8
9
10
11
6
5
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
Item
Part No.
Description
1
2
109191
3
4
122357
122994
Cord Clip................................................ 6
Ground Wire (See Wiring Diagram in
Section V) .............................................. 1
Lock Nut................................................. 1
Micro Switch w/ Roller
(Replaces Old Style) ........................... 1
Screw..................................................... 4
Nut Bar................................................... 2
Washer .................................................. 2
Micro Switch .......................................... 1
Actuator ................................................. 1
Lock Washer .......................................... 1
Screw .................................................. 1
5
6
7
8
9
10
11
122806
4P429
045-0001-93
146978
119633
P14718
102217
Qty
KA916002
Item
Part No.
Description
12
13
14
15
16
17
18
19
20
(N.L.A.)
120060
122010
122009
121655
Switch Bezel (Biltmore Classic Only) .... 2
Membrane Switch (Biltmore Clas. Only) 2
Stud [0.875 in.] (Biltmore Classic Only) 2
Stud [0.625 in.] (Biltmore Classic Only) 2
Cable Clamp (Biltmore Classic Only) .... 7
Screw (Biltmore Classic Only)............... 6
Lock Nut (Biltmore Classic Only)........... 4
Washer (Biltmore Classic Only) ............ 1
Top Motor Assy (Refer to “Top Motor
Assembly” elsewhere. Refer to “Seat
Components” for connecting hardware.)1
122357
119758
Qty
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 12/09
Page 6-14
Printed in U.S.A.
Return To Table Of Contents
Top Electrical Components
SECTION VI
PARTS LIST
17
20
16
1
15
14
2
12
3
13
4
Old Style
5
7
8
9
10
11
6
5
NOTE: This model uses Pebble Grey painted components.
Item
Part No.
Description
1
2
109191
3
4
122357
122994
Cord Clip ............................................... 6
Ground Wire (See Wiring Diagram in
Section V).............................................. 1
Lock Nut ................................................ 1
Micro Switch w/ Roller
(Replaces Old Style) ........................... 1
Screw .................................................... 4
Nut Bar .................................................. 2
Washer .................................................. 2
Micro Switch .......................................... 1
Actuator ................................................. 1
Lock Washer.......................................... 1
Screw .................................................. 1
5
6
7
8
9
10
11
122806
4P429
045-0001-93
146978
119633
P14718
102217
Qty
Item
12
13
14
15
16
17
18
Part No.
Description
122008-00
015-1498-00
121655
Switch Bezel (Biltmore Classic Only) .....2
Membrane Switch (Biltmore Clas. Only) 2
Cable Clamp (Biltmore Classic Only).....7
Screw (Biltmore Classic Only.................6
Lock Nut (Biltmore Classic Only) ...........4
Washer (Early Biltmore Classic Only) ....1
Top Motor Assy (Refer to “Top Motor
Assembly” elsewhere. Refer to “Seat
Components” for connecting hardware.)1
122357
119758
Qty
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 3/13
Page 6-15
Printed in U.S.A.
Return To Table Of Contents
Top Motor Assembly
SECTION VI
PARTS LIST
15
4
3
2
14
1
5
13
6
7
8
12
11
10
9
KA915001
Item
1
Part No.
Description
151900
Top Motor Assembly (120-volt) (Includes
Items 2 thru 15) ..................................... 1
Top Motor Assembly (240-volt) (Includes
Items 2 thru 15) ..................................... 1
• Connector ........................................... 1
• Terminal (Male) ................................... 3
• Terminal (#10) ..................................... 1
• Insulator .............................................. 1
• Capacitor (120-volt) ........................... 1
• Capacitor (240-volt) ........................... 1
151905
2
3
4
5
6
•
•
•
•
•
•
101927
101928
P17087
002-0733-00
002-0734-00
Qty
Item
7
8
9
10
11
12
13
14
15
Part No.
Description
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
053-1379-00
120913
P507
120116
TP1158
122056
Qty
Foam Spacer .......................................1
Capacitor Cover...................................1
Screw...................................................2
Translating Tube ..................................1
Set Screw ............................................1
Nut .......................................................1
Motor Shaft Warning Label..................1
Motor Label .........................................1
Washer ................................................1
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Rev. 6/16
Page 6-16
Printed in U.S.A.
Return To Table Of Contents
Rotational Base Components
(Biltmore Classic)
21
26
21
33
28
26
31
21
28
38
26
1
32
27
22
27
7
26
29
23
22
SECTION VI
PARTS LIST
27
30
34
29
22
21
2
37
14
3
26
25
36
35
24
23
22
21
4
19
5
9
6
20
18
10
8
17
13
11
16
12
TORQUE LEGEND
ITEM#
20
30, 31, 38
TORQUE
10 FT-LBS
(13.6 N•M)
75 FT-LBS
(101.7 N•M)
15
40
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
Item
Part No.
Description
Qty
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
157122
119896-1
052-0592-00
119296
119295
119297
122627
C4507
C1269
119882-2
119513
151446
•
121148
152642
117150
119427-2
119319
(N.L.A.)
119031-2
119033
22
119034
Screw..................................................... 4
Brake Disk ............................................. 1
Locknut w/hole ....................................... 1
Bearing Lock Washer ............................ 1
Bearing Race ......................................... 2
Thrust Bearing ....................................... 1
Sleeve .................................................... 2
Lock Washer .......................................... 2
Nut ......................................................... 2
Rotation Lock Stud ................................ 1
Nut ......................................................... 1
Rotation Block Assy (Includes Item 13) . 1
• Brake Lining ........................................ 1
Set Screw .............................................. 2
Baseplate............................................... 1
Lazy Susan Bearing .............................. 1
Rotation Stop ......................................... 2
Screw..................................................... 2
Upright Housing Assy ............................ 1
Nut ......................................................... 2
Thrust Bearing (Apply 185171
Magnalube) (See Item 39) ................... 12
Thrust Race (1/32”) (See Item 39)....... 14
Item
KA914802
Part No.
Description
Qty
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
119058
041-0625-00
111534
119035
155287
117086
(N.L.A.)
151326
120024-2
151159-50
149296-2
117518
(N.L.A.)
C5253
(N.L.A.)
38
39
151336
152621
40
41
118286
041-0750-02
Bearing.................................................. 6
Nut......................................................... 1
Spring Washer....................................... 1
Thrust Race (1/8”) (See Item 39) ........ 10
Washer (See Item 39) ........................... 4
Bearing.................................................. 2
Parallel Arm........................................... 2
Cam Stud Pivot Screw Assy.................. 1
Pivot Screw ........................................... 4
Lift Arm.................................................. 1
Shaft Assy ............................................. 1
Groove Pin ............................................ 1
Bracket Assy ......................................... 1
Screw .................................................... 2
Lever Assy (Apply 185171 Magnalube
to Threads)............................................ 1
Groove Pin Pivot Screw Assy................ 1
Thrust Bearing Kit (Not Shown) (Includes
Items 21, 22, 26, 27 in quantities listed
Also Includes Magnalube and Loctite).
Chair Base Pad ..................................... 4
Nut......................................................... 4
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev 12/09
Page 6-17
Printed in U.S.A.
Return To Table Of Contents
Rotational Base Components
(Biltmore Classic)
21
26
21
33
28
26
31
21
27
7
32
27
22
28
38
26
1
26
29
23
22
SECTION VI
PARTS LIST
27
30
34
29
22
21
2
37
14
3
26
35
22
21
19
5
9
TORQUE
10 FT-LBS
(13.6 N•M)
75 FT-LBS
(101.7 N•M)
17
13
16
12
11
TORQUE LEGEND
20
18
10
8
6
30, 31, 38
24
23
4
ITEM#
20
25
36
15
40
NOTE: This model uses Pebble Grey painted components.
KA914804i
Used on units with Serial Number V1000 thru V87416
Item
Part No.
Description
Qty
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
157122
119896-1
052-0592-00
119296
119295
119297
122627
C4507
C1269
119882-2
119513
151446
•
121148
152642-00
117150
119427-2
119319
151168-00
119031-2
119033
22
119034
Screw .....................................................4
Brake Disk..............................................1
Locknut w/hole .......................................1
Bearing Lock Washer.............................1
Bearing Race .........................................2
Thrust Bearing .......................................1
Sleeve ....................................................2
Lock Washer ..........................................2
Nut .........................................................2
Rotation Lock Stud.................................1
Nut .........................................................1
Rotation Block Assy (Includes Item 13) .1
• Brake Lining.........................................1
Set Screw...............................................2
Baseplate ...............................................1
Lazy Susan Bearing...............................1
Rotation Stop .........................................2
Screw .....................................................2
Upright Housing Assy ............................1
Nut .........................................................2
Thrust Bearing (Apply 185171
Magnalube) (See Item 39) ...................12
Thrust Race (1/32”) (See Item 39) .......14
Item
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Part No.
Description
Qty
119058
Bearing .................................................. 6
041-0625-00
Nut ......................................................... 1
111534
Spring Washer ....................................... 1
119035
Thrust Race (1/8”) (See Item 39)......... 10
155287
Washer (See Item 39)............................ 4
117086
Bearing .................................................. 2
121521-00
Parallel Arm ........................................... 2
151326
Cam Stud Pivot Screw Assy .................. 1
120024-2
Pivot Screw............................................ 4
151159-00
Lift Arm .................................................. 1
149296-2
Shaft Assy ............................................. 1
117518
Groove Pin............................................. 1
030-1808-00-216Bracket Assy .......................................... 1
C5253
Screw..................................................... 2
151447-00
Lever Assy (Apply 185171 Magnalube
to Threads) ............................................ 1
151336
Groove Pin Pivot Screw Assy ................ 1
152621
Thrust Bearing Kit (Not Shown) (Includes
Items 21, 22, 26, 27 in quantities listed
Also Includes Magnalube and Loctite).
118286
Chair Base Pad...................................... 4
041-0750-02
Nut ......................................................... 4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Rev 1/09
Page 6-18
Printed in U.S.A.
Return To Table Of Contents
Rotational Base Components
(Biltmore Classic)
21
26
21
33
28
26
31
21
28
38
26
1
32
27
22
27
7
26
29
23
22
SECTION VI
PARTS LIST
27
30
34
29
22
21
2
37
14
3
26
25
36
35
24
23
22
21
4
19
5
9
6
20
18
10
8
17
13
11
16
12
TORQUE LEGEND
ITEM#
20
30, 31, 38
TORQUE
10 FT-LBS
(13.6 N•M)
75 FT-LBS
(101.7 N•M)
15
40
NOTE: This model uses Pebble Grey painted components.
KA914805i
Used on units with Serial Number V87417 thru V128688
Item
Part No.
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
157122
119896-1
052-0592-00
119296
119295
119297
122627
C4507
C1269
119882-2
119513
151446
•
121148
152642-00
117150
119427-2
119319
030-1563-50
119031-2
119033
22
119034
Screw .................................................... 4
Brake Disk ............................................. 1
Locknut w/hole....................................... 1
Bearing Lock Washer ............................ 1
Bearing Race......................................... 2
Thrust Bearing....................................... 1
Sleeve.................................................... 2
Lock Washer.......................................... 2
Nut......................................................... 2
Rotation Lock Stud ................................ 1
Nut......................................................... 1
Rotation Block Assy (Includes Item 13). 1
• Brake Lining ........................................ 1
Set Screw .............................................. 2
Baseplate .............................................. 1
Lazy Susan Bearing .............................. 1
Rotation Stop......................................... 2
Screw .................................................... 2
Upright Housing Assy............................ 1
Nut......................................................... 2
Thrust Bearing (Apply 185171
Magnalube) (See Item 39)................... 12
Thrust Race (1/32”) (See Item 39) ...... 14
Qty
Item
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Part No.
Description
Qty
119058
Bearing ..................................................6
041-0625-00
Nut .........................................................1
111534
Spring Washer .......................................1
119035
Thrust Race (1/8”) (See Item 39) .........10
155287
Washer (See Item 39) ............................4
117086
Bearing ..................................................2
121521-00
Parallel Arm ...........................................2
151326
Cam Stud Pivot Screw Assy ..................1
120024-2
Pivot Screw ............................................4
151159-00
Lift Arm ..................................................1
149296-2
Shaft Assy..............................................1
117518
Groove Pin .............................................1
030-1808-00-216Bracket Assy ........................................ 1
C5253
Screw .....................................................2
151447-00
Lever Assy (Apply 185171 Magnalube
to Threads).............................................1
151336
Groove Pin Pivot Screw Assy ................1
152621
Thrust Bearing Kit (Not Shown) (Includes
Items 21, 22, 26, 27 in quantities listed
Also Includes Magnalube and Loctite).
118286
Chair Base Pad ......................................4
041-0750-02
Nut .........................................................4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev 1/09
Page 6-18.1
Printed in U.S.A.
Return To Table Of Contents
Rotational Base Components
(Biltmore Classic)
21
26
21
33
28
26
31
21
27
7
32
27
22
28
38
26
1
26
29
23
22
SECTION VI
PARTS LIST
27
30
34
29
22
21
2
37
14
3
26
25
36
35
24
23
22
21
4
19
5
9
6
20
18
10
8
17
13
11
16
12
TORQUE LEGEND
ITEM#
20
30, 31, 38
TORQUE
10 FT-LBS
(13.6 N•M)
75 FT-LBS
(101.7 N•M)
15
40
NOTE: This model uses Pebble Grey painted components.
KA914803i
Used on units with Serial Number V128689 thru Present
Item
Part No.
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
157122
119896-1
052-0592-00
119296
119295
119297
122627
C4507
C1269
119882-2
119513
151446
•
121148
152642-00
117150
119427-2
119319
122643-01
119031-2
119033
22
119034
Screw .................................................... 4
Brake Disk ............................................. 1
Locknut w/hole....................................... 1
Bearing Lock Washer ............................ 1
Bearing Race......................................... 2
Thrust Bearing....................................... 1
Sleeve.................................................... 2
Lock Washer.......................................... 2
Nut......................................................... 2
Rotation Lock Stud ................................ 1
Nut......................................................... 1
Rotation Block Assy (Includes Item 13). 1
• Brake Lining ........................................ 1
Set Screw .............................................. 2
Baseplate .............................................. 1
Lazy Susan Bearing .............................. 1
Rotation Stop......................................... 2
Screw .................................................... 2
Upright Housing Assy............................ 1
Nut......................................................... 2
Thrust Bearing (Apply 185171
Magnalube) (See Item 39)................... 12
Thrust Race (1/32”) (See Item 39) ...... 14
Qty
Item
Part No.
Description
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
119058
041-0625-00
111534
119035
155287
117086
051-1081-00-216
151326
120024-2
151159-00
149296-2
117518
030-1808-00-216
C5253
151447-00
38
39
151336
152621
40
41
118286
041-0750-02
Bearing..................................................6
Nut.........................................................1
Spring Washer ......................................1
Thrust Race (1/8”) (See Item 39) ........10
Washer (See Item 39) ...........................4
Bearing..................................................2
Parallel Arm...........................................2
Cam Stud Pivot Screw Assy..................1
Pivot Screw ...........................................4
Lift Arm..................................................1
Shaft Assy .............................................1
Groove Pin ............................................1
Bracket Assy .........................................1
Screw ....................................................2
Lever Assy (Apply 185171 Magnalube
to Threads)............................................1
Groove Pin Pivot Screw Assy................1
Thrust Bearing Kit (Not Shown) (Includes
Items 21, 22, 26, 27 in quantities listed
Also Includes Magnalube and Loctite).
Chair Base Pad .....................................4
Nut.........................................................4
Qty
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev 3/13
Page 6-18.2
Printed in U.S.A.
Return To Table Of Contents
Non-Rotational Base Components
(Concept L/R Classic)
2
2
7
7
13
10
4
20
SECTION VI
PARTS LIST
3
8
9
12
16
2
9
8
11
10
3
14
2
7
8
15
6
5
3
17
4
TORQUE LEGEND
ITEM#
1
11, 12, 16
2
19
TORQUE
10 FT-LBS
(13.6 N•M)
75 FT-LBS
(101.7 N•M)
1
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
KA924501i
Item
Part No.
Description
1
2
119031-2
119033
Nut ......................................................... 2
Thrust Bearing (Apply 185171
Magnalube) (See Item 18) ................... 12
Thrust Race (1/32”) (See Item 18)....... 14
Bearing .................................................. 6
Nut ......................................................... 1
Spring Washer ....................................... 1
Thrust Race (1/8”) (See Item 18)......... 10
Washer (See Item 18)............................ 4
Bearing .................................................. 2
Parallel Arm ........................................... 2
Pivot Screw ............................................ 1
3
4
5
6
7
8
9
10
11
119034
119058
041-0625-00
111534
119035
155287
117086
(N.L.A.)
120025-2
Qty
Item
Part No.
Description
Qty
12
13
14
15
16
17
18
120024-2
151159-50
149296-2
117518
151336
(N.L.A.)
152621
19
20
118286
041-0750-02
Pivot Screw ........................................... 4
Lift Arm.................................................. 1
Shaft Assy ............................................. 1
Groove Pin ............................................ 1
Groove Pin Pivot Screw Assy................ 1
Base Plate Weldment............................ 1
Thrust Bearing Kit (Not Shown) (Includes
Items 2, 3, 7 and 8 in quantities listed.
Also Includes Magnalube and Loctite).
Chair Base Pad ..................................... 4
Nut......................................................... 4
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Rev 12/09
Page 6-19
Printed in U.S.A.
Return To Table Of Contents
Non-Rotational Base Components
(Concept L/R Classic)
2
2
7
7
13
10
4
20
SECTION VI
PARTS LIST
3
8
9
12
16
2
9
8
11
10
3
14
2
7
8
15
6
5
3
17
4
TORQUE LEGEND
ITEM#
1
11, 12, 16
TORQUE
10 FT-LBS
(13.6 N•M)
75 FT-LBS
(101.7 N•M)
2
19
NOTE: This model uses Pebble Grey painted components.
1
KA924501i
Used on units with Serial Number V1000 thru V87416
Item
Part No.
Description
1
2
119031-2
119033
Nut .........................................................2
Thrust Bearing (Apply 185171
Magnalube) (See Item 18) ...................12
Thrust Race (1/32”) (See Item 18) .......14
Bearing...................................................6
Nut .........................................................1
Spring Washer .......................................1
Thrust Race (1/8”) (See Item 18) .........10
Washer (See Item 18) ............................4
Bearing...................................................2
Parallel Arm............................................2
Pivot Screw ............................................1
3
4
5
6
7
8
9
10
11
119034
119058
041-0625-00
111534
119035
155287
117086
121521-00
120025-2
Qty
Item
Part No.
Description
Qty
12
13
14
15
16
17
18
120024-2
151159-00
149296-2
117518
151336
153167-00
152621
19
20
118286
041-0750-02
Pivot Screw............................................ 4
Lift Arm .................................................. 1
Shaft Assy ............................................. 1
Groove Pin............................................. 1
Groove Pin Pivot Screw Assy ................ 1
Base Plate Weldment ............................ 1
Thrust Bearing Kit (Not Shown) (Includes
Items 2, 3, 7 and 8 in quantities listed.
Also Includes Magnalube and Loctite).
Chair Base Pad...................................... 4
Nut ......................................................... 4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev 1/05
Page 6-20
Printed in U.S.A.
Return To Table Of Contents
Non-Rotational Base Components
(Concept L/R Classic)
2
2
7
7
13
10
4
20
SECTION VI
PARTS LIST
3
8
9
12
16
2
9
8
11
10
3
14
2
7
8
15
6
5
3
17
TORQUE LEGEND
ITEM#
1
11, 12, 16
TORQUE
10 FT-LBS
(13.6 N•M)
75 FT-LBS
(101.7 N•M)
4
2
19
NOTE: This model uses Pebble Grey painted components.
1
KA924502i
Used on units with Serial Number V87417 thru V128688
Item
Part No.
Description
1
2
119031-2
119033
Nut ......................................................... 2
Thrust Bearing (Apply 185171
Magnalube) (See Item 18) ................... 12
Thrust Race (1/32”) (See Item 18)....... 14
Bearing .................................................. 6
Nut ......................................................... 1
Spring Washer ....................................... 1
Thrust Race (1/8”) (See Item 18)......... 10
Washer (See Item 18)............................ 4
Bearing .................................................. 2
Parallel Arm ........................................... 2
Pivot Screw............................................ 1
3
4
5
6
7
8
9
10
11
119034
119058
041-0625-00
111534
119035
155287
117086
121521-00
120025-2
Qty
Item
Part No.
Description
Qty
12
13
14
15
16
17
18
120024-2
151159-00
149296-2
117518
151336
030-1564-50
152621
19
20
118286
041-0750-02
Pivot Screw ............................................4
Lift Arm...................................................1
Shaft Assy ..............................................1
Groove Pin .............................................1
Groove Pin Pivot Screw Assy.................1
Base Plate Weldment.............................1
Thrust Bearing Kit (Not Shown) (Includes
Items 2, 3, 7 and 8 in quantities listed.
Also Includes Magnalube and Loctite).
Chair Base Pad ......................................4
Nut..........................................................4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev 5/05
Page 6-20.1
Printed in U.S.A.
Return To Table Of Contents
Non-Rotational Base Components
(Concept L/R Classic)
2
2
7
7
13
10
4
20
SECTION VI
PARTS LIST
3
8
9
12
16
2
9
8
11
10
3
14
2
7
8
15
6
5
3
17
TORQUE LEGEND
ITEM#
1
11, 12, 16
TORQUE
10 FT-LBS
(13.6 N•M)
75 FT-LBS
(101.7 N•M)
4
2
19
NOTE: This model uses Pebble Grey painted components.
1
KA924502i
Used on units with Serial Number V128689 thru Present
Item
Part No.
1
2
119031-2
119033
3
4
5
6
7
8
9
10
11
Description
Qty
Nut ....................................................... 2
Thrust Bearing (Apply 185171
Magnalube) (See Item 18) ................. 12
119034
Thrust Race (1/32”) (See Item 18)..... 14
119058
Bearing ................................................ 6
041-0625-00
Nut ....................................................... 1
111534
Spring Washer ..................................... 1
119035
Thrust Race (1/8”) (See Item 18)....... 10
155287
Washer (See Item 18).......................... 4
117086
Bearing ................................................ 2
051-1081-00-216 Parallel Arm ......................................... 2
120025-2
Pivot Screw.......................................... 1
Item
Part No.
Description
Qty
12
13
14
15
16
17
18
120024-2
151159-00
149296-2
117518
151336
030-1564-50
152621
19
20
118286
041-0750-02
Pivot Screw ............................................4
Lift Arm...................................................1
Shaft Assy ..............................................1
Groove Pin .............................................1
Groove Pin Pivot Screw Assy.................1
Base Plate Weldment.............................1
Thrust Bearing Kit (Not Shown) (Includes
Items 2, 3, 7 and 8 in quantities listed.
Also Includes Magnalube and Loctite).
Chair Base Pad ......................................4
Nut..........................................................4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Page 6-20.2
Printed in U.S.A.
Return To Table Of Contents
Base Electrical Components
* Control PC Boards for units
with CN Serial Numbers
are Obsolete
4
5
3
SECTION VI
PARTS LIST
2
1
41
40
28
38
20
39
6
10
10
15
8
7
11
11
9
12
28
19
20
21
36
13
28 34 33
32
35
37
11
25
26
27
22
14
16
17
18
19
16
23
21
10
28
31
29
21
24
30
Used on units with Serial Number CP1000 thru present,
PB1000 thru present and V1000 thru V87416
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Part No.
Description
Qty
121321-2
050-5664-00
117706
119593
119690
002-1029-00
002-1029-01
* 002-1029-xx
002-0733-00
002-0734-00
016-0971-00
121068
122806
146978
121054-2
109191
119986
C5287
P507
040-0010-183
117977
P12575
117601
Program Plate ........................................1
Program Switch Cam .............................1
Spring Washer .......................................1
Lock Nut .................................................1
Snap-in Support (short) .........................2
Control PC Board (120-volt)...................1
Control PC Board (240-volt)1
Cntl PCB for CN Serial No. Units ...N.L.A.
Capacitor (120-volt Units) ......................1
Capacitor (240-volt Units) ......................1
Capacitor Bracket...................................1
Snap-in Support (long)...........................2
Screw .....................................................8
Micro Switch...........................................5
Mounting Plate .......................................1
Cord Clip ................................................5
Fuse Warning Label ...............................1
Screw .....................................................2
Nut .........................................................3
Screw .....................................................1
Self-Clinch Nut .......................................4
Lock Washer ..........................................7
Screw .....................................................7
Item
Part No.
Description
21
22
23
121656
121654
015-1526-00
151454-01
• 061-0743-00
P1673
121719
151179
122357
112504
122358
119483
155668
P14718
105155
121655
109104
119378
121520-2
121877
119589
041-0004-00
Cable Clamp .......................................... 3
Cable Clamp .......................................... 1
Power Cord 120 VAC (Includes Item 24)1
Power Cord 240 VAC (w/o plug) ............ 1
• Warning Tag ........................................ 1
Washer .................................................. 6
Spacer ................................................... 6
Electrical Connection Plate.................... 1
Lock Nut .............................................. 13
Ground Label......................................... 2
Lock Nut ................................................ 5
Terminal Block ....................................... 1
Screw..................................................... 2
Lock Washer.......................................... 2
Lock Washer.......................................... 2
Cable Clamp .......................................... 2
Screw..................................................... 2
Cam ....................................................... 2
Limit Switch Bracket .............................. 2
Cable Clamp .......................................... 2
Latching Duct......................................... 1
Nut ......................................................... 4
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Qty
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 6/16
Page 6-21
Printed in U.S.A.
Return To Table Of Contents
Base Electrical Components
4
3
2
5
6
SECTION VI
PARTS LIST
40
1
39
28
37
20
38
30
8
15
7
28
21
10
11
9
21
12
13
20
36
11
33
34
32
35
31
25
22
14
16
17
18
19
16
23
21
26
30
27
24
21
29
28
33
Used on units with Serial Number V87417 thru V128688
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Part No.
Description
Qty
050-5865-01-216 Program Plate........................................ 1
050-5664-00
Program Switch Cam............................. 1
117706
Spring Washer....................................... 1
119593
Lock Nut ................................................ 1
119690
Snap-in Support (short)......................... 2
002-1029-00
Control PC Board (120-volt) .................. 1
002-1029-01
Control PC Board (240-volt) .................. 1
002-0733-00
Capacitor (120-volt) ............................... 1
002-0734-00
Capacitor (240-volt) ............................... 1
016-0971-00
Capacitor Bracket .................................. 1
121068
Snap-in Support (long) .......................... 2
122806
Screw..................................................... 2
146978
Micro Switch .......................................... 5
121054-2
Mounting Plate ...................................... 1
109191
Cord Clip ............................................... 5
119986
Fuse Warning Label .............................. 1
C5287
Screw..................................................... 2
P507
Nut ......................................................... 3
040-0010-183
Screw..................................................... 7
117977
Self-Clinch Nut ...................................... 4
P12575
Lock Washer.......................................... 7
117601
Screw..................................................... 7
Item
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Part No.
Description
Qty
121656
121654
015-1526-00
151454-01
• 061-0743-00
050-5856-00
122357
112504
122358
119483
155668
040-0004-25
P14718
105155
121655
109104
119378
121520-2
121877
119589
041-0004-00
Cable Clamp ..........................................3
Cable Clamp ..........................................1
Power Cord 120 VAC (Includes Item 24)1
Power Cord 240 VAC (w/o plug) ............1
• Warning Tag ........................................1
Electrical Connection Plate ....................1
Lock Nut ...............................................13
Ground Label .........................................2
Lock Nut .................................................5
Terminal Block........................................1
Screw .....................................................2
Screw .....................................................6
Lock Washer ..........................................2
Lock Washer ..........................................2
Cable Clamp ..........................................2
Screw .....................................................2
Cam .......................................................2
Limit Switch Bracket...............................2
Cable Clamp ..........................................2
Latching Duct .........................................1
Nut .........................................................4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 6/16
Page 6-21.1
Printed in U.S.A.
Return To Table Of Contents
Base Electrical Components
4
5
3
SECTION VI
PARTS LIST
2
6
28
36
39
1
38
37
10
19
10
15
8
7
11
9
11
39
28
12
17
21
34
13
26 32 31
30
33
35
11
25
22
14
16
17
18
19
16
23
21
10
26
29
27
21
24
28
Used on units with Serial Number V128689 thru V160530
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Part No.
Description
Qty
050-5865-01-216Program Plate ........................................1
050-5664-00
Program Switch Cam .............................1
117706
Spring Washer .......................................1
119593
Lock Nut.................................................1
119690
Snap-in Support (short) .........................2
002-1029-00
Control PC Board (120-volt)...................1
002-1029-01
Control PC Board (240-volt)...................1
002-0733-00
Capacitor (120-volt Units) ......................1
002-0733-01
Capacitor (240-volt Units) ......................1
016-0971-00
Capacitor Bracket...................................1
121068
Snap-in Support (long)...........................2
122806
Screw .....................................................8
146978
Micro Switch...........................................5
121054-2
Mounting Plate .......................................1
109191
Cord Clip ................................................5
119986
Fuse Warning Label...............................1
C5287
Screw .....................................................2
P507
Nut .........................................................3
040-0010-183
Screw .....................................................7
117977
Self-Clinch Nut .......................................4
P12575
Lock Washer ..........................................7
Item
Part No.
20
21
22
23
117601
Screw..................................................... 1
121656
Cable Clamp.......................................... 3
121654
Cable Clamp.......................................... 1
015-1526-00
Power Cord 120 VAC (Includes Item 24)1
151454-01
Power Cord 240 VAC (w/o plug) ............ 1
• 061-0743-00 • Warning Tag ........................................ 1
050-5856-01-216 Electrical Connection Plate ................... 1
122357
Lock Nut .............................................. 13
112504
Ground Label......................................... 2
122358
Lock Nut ................................................ 3
119483
Terminal Block ....................................... 1
155668
Screw..................................................... 2
P14718
Lock Washer.......................................... 2
105155
Lock Washer.......................................... 2
121655
Cable Clamp.......................................... 2
109104
Screw..................................................... 2
119378
Cam ....................................................... 2
050-6355-00-216 Limit Switch Bracket .............................. 2
121877
Cable Clamp.......................................... 2
119589
Latching Duct ........................................ 1
040-0010-109
Screw..................................................... 2
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
Description
Qty
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 6/16
Page 6-21.2
Printed in U.S.A.
Return To Table Of Contents
SECTION VI
PARTS LIST
Base Electrical Components
5
4
3
2
6
7
41
13
1
40
10 8
22
39
13
9
11
14
12
43
23
21
12
17
30
38
30
42
45
44
19
18
15
37
13
35
28
34
36
32
27
24
16
18
19
20
21
18
25
23
28
12
29
26
23
31
30
33
Used on units with Serial Number V160531 thru V456962
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Part No.
Description
Qty
050-5865-01-216Program Plate ........................................ 1
050-5664-00
Program Switch Cam............................. 1
053-1159-00
Washer, Thrust (Delrin).......................... 1
525-0063-00
Washer, Belleville................................... 2
119593
Lock Nut................................................. 1
119690
Snap-in Support (short) ......................... 2
002-1029-00
Control PC Board Kit (120-volt) ............. 1
002-1029-01
Control PC Board Kit (240-volt) ............. 1
002-0733-00
Capacitor (120-volt Units) ...................... 1
002-0734-00
Capacitor (240-volt Units) ...................... 1
015-0413-01
Cap, Capacitor (only w/ 120 VAC units). 1
015-0412-00
Bracket, Capacitor (120 VAC units) ....... 1
016-0971-00
Bracket, Capacitor (240 VAC units) ....... 1
121068
Snap-in Support (long) .......................... 2
122806
Screw..................................................... 8
146978
Micro Switch .......................................... 5
121054-2
Mounting Plate....................................... 1
109191
Cord Clip................................................ 5
119986
Fuse Warning Label............................... 1
C5287
Screw..................................................... 2
P507
Nut ......................................................... 3
040-0010-183
Screw..................................................... 7
117977
Self-Clinch Nut....................................... 4
C2563
Lock Washer .......................................... 7
117601
Screw..................................................... 1
Item
Part No.
23
24
25
121656
Cable Clamp.......................................... 3
121654
Cable Clamp.......................................... 1
015-1526-00
Power Cord 120 VAC (Includes Item 24)1
151454-01
Power Cord 240 VAC (w/o plug)............ 1
• 061-0743-00 • Warning Tag........................................ 1
050-5856-01-216 Electrical Connection Plate ................... 1
122357
Lock Nut .............................................. 13
112504
Ground Label ........................................ 2
122358
Lock Nut ................................................ 3
119483
Terminal Block....................................... 1
155668
Screw .................................................... 2
P14718
Lock Washer ......................................... 2
105155
Lock Washer ......................................... 2
121655
Cable Clamp.......................................... 2
109104
Screw .................................................... 2
119378
Cam....................................................... 2
050-6355-00-216 Limit Switch Bracket .............................. 2
121877
Cable Clamp.......................................... 2
119589
Latching Duct ........................................ 1
040-0010-109
Screw .................................................... 2
122074-50
Bracket .................................................. 1
015-1304-00
Light, Power ON (120 VAC)................... 1
122541
Fuseholder ............................................ 1
121169
Fuse (10 Amp, 250 VAC, Type F) .......... 1
119485
Fuse (5 Amp, 250 VAC, Type F) ............ 1
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
Description
Qty
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 6/16
Page 6-21.3
Printed in U.S.A.
Return To Table Of Contents
SECTION VI
PARTS LIST
Base Electrical Components
5
4
3
2
6
7
41
13
1
40
10
8
22
39
13
9
11
12
43
23
21
12
17
28
38
28
42
44
22
14
22
15
37
45
13
35
30
34
36
32
45
27
24
16
18
19
20
21
18
25
23
28
12
29
26
23
31
30
33
Used on units with Serial Number V456963 thru Present
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Part No.
050-5865-01-216
050-5664-00
053-1159-00
525-0063-00
119593
119690
002-1029-00
002-1029-01
002-0733-00
002-0734-00
015-0413-01
015-0412-00
016-0971-00
121068
122806
146978
121054-2
109191
061-0979-00
061-0979-01
C5287
P507
040-0010-183
117977
C2563
117601
Description
Qty
Program Plate ..................................... 1
Program Switch Cam........................... 1
Washer, Thrust (Delrin) ....................... 1
Washer, Belleville ................................ 2
Lock Nut .............................................. 1
Snap-in Support (short)....................... 2
Control PC Board (120-volt) ................ 1
Control PC Board (240-volt) ................ 1
Capacitor (120-volt Units).................... 1
Capacitor (240-volt Units).................... 1
Cap, Capacitor (20 VAC units only) ..... 1
Bracket, Capacitor (120 VAC units) ..... 1
Bracket, Capacitor (240 VAC units) ..... 1
Snap-in Support (long) ........................ 2
Screw .................................................. 8
Micro Switch ........................................ 5
Mounting Plate .................................... 1
Cord Clip ............................................. 5
Fuse Reference Label (120 VAC)........ 1
Fuse Reference Label (240 VAC)........ 1
Screw .................................................. 2
Nut....................................................... 3
Screw .................................................. 8
Self-Clinch Nut .................................... 4
Lock Washer........................................ 7
Screw .................................................. 7
Item
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
Part No.
121656
121654
015-1526-00
151454-01
• 061-0743-00
050-5856-01-216
122357
061-0653-00
122358
119483
155668
P14718
105155
121655
109104
119378
050-6355-00-216
121877
119589
040-0010-109
122074-50
015-1304-00
015-1304-01
44
45
150150
Description
Qty
Cable Clamp .......................................3
Cable Clamp .......................................1
Power Cord 120 VAC (Incl. Item 26) ...1
Power Cord 240 VAC (w/o plug)..........1
• Warning Tag ......................................1
Electrical Connection Plate .................1
Lock Nut ............................................14
Ground Label ......................................2
Lock Nut ..............................................3
Terminal Block.....................................1
Screw ..................................................2
Lock Washer .......................................2
Lock Washer .......................................2
Cable Clamp .......................................2
Screw ..................................................2
Cam.....................................................2
Limit Switch Bracket ............................2
Cable Clamp .......................................2
Latching Duct ......................................1
Screw ..................................................2
Bracket ................................................1
Light, Power ON (120 VAC).................1
Light, Power ON (240 VAC).................1
Fuses, (Refer to Section 5,
Schematics and Diagrams) .................6
Ground Wire (8") .................................1
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 6/16
Page 6-21.4
Printed in U.S.A.
Return To Table Of Contents
Base Motor Assembly
SECTION VI
PARTS LIST
MA514900
Item
Part No.
Description
152402
Base Motor Assembly (120-volt)
(Includes Items 1 thru 24) ...................... 1
Base Motor Assembly (240-volt)
(Includes Items 1 thru 24) ...................... 1
• Connector............................................ 1
• Terminal (Male) ................................... 3
• Base Motor (120-volt)
(Includes Items 4 thru 15) ................... 1
• Base Motor (240-volt)
(Includes Items 4 thru 15) ................... 1
• • Thrust Bearing .................................. 2
• • Bearing Race.................................... 4
• • Bearing ............................................. 1
• • Worm Wheel (See Item 31) .............. 1
• • Roll Pin (See Item 31) ...................... 1
• • Retaining Ring .................................. 1
• • Nut .................................................... 2
• • Clevis ................................................ 1
• • Set Screw ......................................... 2
• • Screw Shaft ...................................... 1
• • Lockwasher....................................... 1
152534
1
2
3
• 101927
• 101928
• 121756
3
• 121757
4
5
6
7
8
9
10
11
12
13
14
•
•
•
•
•
•
•
•
•
•
•
•
•
•
• 118624
• 118625
•
•
•
•
•
•
Qty
Item
Part No.
Description
Qty
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
••
• 108041
• C2563
• 117159-2
• 122060
• 116912
• 121524-2
• C3454
• P50096
• 117195
120557-2
C2563
040-0250-85
121510
042-0007-00
117149-2
150459
32
152708
• • Screw ............................................... 1
• Screw.................................................. 2
• Lock Washer ....................................... 2
• Trunnion Plate..................................... 1
• Pin (See Item 32)................................ 1
• Drive Nut............................................. 1
• Trunnion (See Item 32) ....................... 1
• Lock Washer ....................................... 1
• Washer ............................................... 1
• Screw.................................................. 1
Trunnion Retainer Plate......................... 2
Lock Washer ......................................... 4
Screw .................................................... 4
Washer .................................................. 2
Retaining Ring....................................... 2
Bottom Motor Pin .................................. 1
Worm Wheel Kit (Not Shown) (Includes
Items 7 and 8)
Trunnion Kit (Not Shown) (Includes Items
17 and 19)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 8/06
Page 6-22
Printed in U.S.A.
Return To Table Of Contents
Footswitch
SECTION VI
PARTS LIST
1
2
3
24
5
4
6
6
23
18
22
21
7
8
20
9
19
10
17
11
16
Top View
15
12
14
13
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
Part No.
Description
Qty
NLA *
• 119891
• 120832-50
• 121300
• 050-6044-00
• 041-0004-00
• 146978
• 121383-2
• 121998
• 121382
• 113502
• 120836
• 120837
• 120861
Footswitch Assy. (Refer to 002-1859-00)
• Foot .....................................................4
• Base Plate .................................... *NLA
• Insulation .............................................1
• Actuator ..............................................4
• Nut .......................................................8
• Micro Switch ........................................4
• Activator...............................................1
• Footswitch Housing ...................... *NLA
• Control Pad..........................................1
• Stud .....................................................8
• Operating Label ............................ *NLA
• Bumper ................................................1
• Stud .....................................................3
Item
Part No.
Description
14
15
16
17
18
•
•
•
•
•
120839
120898
120848
122071
152715
•
•
•
•
•
19
20
21
22
23
24
25
•
•
•
•
•
•
•
• 120653
• P12349
120858-1
120859
120860
040-0006-98
015-0013-02
•
•
•
•
•
•
•
MA492302i
Qty
Rocker Switch ..................................... 1
Stud..................................................... 2
Green Label ........................................ 1
Yellow Label ........................................ 1
Cable Assembly (Includes Items 20
and 21 [Used on Early Units Only])..... 1
• Strain Relief Clamp........................... 1
• O-Ring (Used on Early Units Only)... 1
Counter Weight .............................*NLA
Standoff (Short)................................... 3
Standoff (Long) ................................... 2
Screw .................................................. 5
Cable Tie (Not Shown) ........................ 2
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 12/16
Page 6-23
Printed in U.S.A.
Return To Table Of Contents
Footswitch
SECTION VI
PARTS LIST
1
2
3
24
5
4
6
6
23
18
22
21
7
8
20
9
19
10
17
11
16
Top View
15
12
14
13
NOTE: This model uses Pebble Grey painted components.
MA492302i
Item
1
2
3
4
5
6
7
8
9
10
11
12
Part No.
Description
002-1859-00
Footswtich Assembly (Includes Items 1
thru 25) .................................................. 1
• Foot ..................................................... 4
• Base Plate........................................... 1
• Insulation............................................. 1
• Actuator .............................................. 4
• Nut....................................................... 8
• Micro Switch........................................ 4
• Activator .............................................. 1
• Footswitch Housing ............................. 1
• Control Pad ......................................... 1
• Stud..................................................... 8
• Operating Label................................... 1
• Bumper................................................ 1
•
•
•
•
•
•
•
•
•
•
•
•
119891
120832-50
121300
050-6044-00
041-0004-00
146978
121383-2
121998-01
121382
113502
061-0806-00
120837
Qty
Item
Part No.
Description
13
14
15
16
17
18
•
•
•
•
•
•
120861
120839
120898
120848
122071
015-1530-00
•
•
•
•
•
•
19
20
21
22
23
24
25
•
•
•
•
•
•
•
• 120653
• P12349
120858-50
120859
120860
040-0006-98
015-0013-02
•
•
•
•
•
•
•
Qty
Stud .................................................... 3
Rocker Switch ..................................... 1
Stud .................................................... 2
Green Label ........................................ 1
Yellow Label ........................................ 1
Cable Assembly (Includes Items 20
and 21 [Used on Early Units Only]) .... 1
• Strain Relief Clamp .......................... 1
• O-Ring (Used on Early Units Only) .. 1
Counter Weight ................................... 1
Standoff (Short) .................................. 3
Standoff (Long) ................................... 2
Screw.................................................. 5
Cable Tie (Not Shown) ....................... 2
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 12/16
Page 6-24
Printed in U.S.A.
Return To Table Of Contents
Umbilicals
(Concept L/R Classic)
SECTION VI
PARTS LIST
NOTE: This model uses Sterling Grey painted components.
KA924600
Item
1
2
3
4
5
Part No.
Description
Qty
122559
122357
275255
122582
040-0010-183
Cable Clamp .......................................... 2
Lock Nut................................................. 5
Vacuum Tubing .................................. A/R
Cable Clamp .......................................... 2
Screw..................................................... 2
Item
6
7
8
9
Part No.
Description
Qty
122583
117601
153142
102308
Cable Clamp.......................................... 3
Screw .................................................... 3
Internal Umbilical................................... 1
Cable Tie (Not Shown) .......................... 4
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 8/14
Page 6-25
Printed in U.S.A.
Return To Table Of Contents
Umbilicals
(Concept L/R Classic)
SECTION VI
PARTS LIST
NOTE: This model uses Pebble Grey painted components.
Item
1
2
3
4
5
Part No.
Description
122559
122357
S059-00125
122582
040-0010-183
Cable Clamp .......................................... 2
Lock Nut................................................. 5
Vacuum Tubing .................................. A/R
Cable Clamp .......................................... 2
Screw..................................................... 2
Qty
Item
6
7
8
9
KA924600
Part No.
Description
122583
117601
153142-01
102308
Cable Clamp.......................................... 3
Screw .................................................... 3
Internal Umbilical................................... 1
Cable Tie (Not Shown) .......................... 4
Qty
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 8/14
Page 6-26
Printed in U.S.A.
Return To Table Of Contents
Double Articulating Headrest
(152634)
Color Selector......www.midmark.com
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
MA543500
Item
Part No.
Description
152634xxx
Dbl Art. Headrest (w/Vacu-Form uph.)
(includes items 1 thru 18) ....................1
Dbl Art. Headrest (w/Plush uph.)
(includes items 1 thru 18) ....................1
• Headrest Housing................................1
• Stop Pin ...............................................8
• Spring Housing ....................................1
• Spring ..................................................8
• Screw...................................................2
• Release Plate ......................................1
• Pin Housing .........................................1
• Screw...................................................2
152634xx
1
2
3
4
5
6
7
8
•
•
•
•
•
•
•
•
(N.L.A.)
121918-3
121913-50
103314
122097
121917-2
121912-50
122096
Qty
Item
9
10
11
12
13
14
15
16
17
18
Part No.
Description
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
121945
152905-50
122772-3
122778
(N.L.A.)
121915-50
122065-2
122089-50
121488
154032xxx
154047xx
Qty
Decorative Disc ................................... 4
Tang Assembly.................................... 1
Pivot Pin .............................................. 2
Setscrew ............................................. 1
Plug ..................................................... 2
Button.................................................. 1
Spacer................................................. 2
Screw .................................................. 1
Set Screw............................................ 1
Headrest Upholstery (Vacu-Form) ...... 1
Headrest Upholstery (Plush)............... 1
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Rev. 12/09
Page 6-27
Printed in U.S.A.
Return To Table Of Contents
Double Articulating Headrest
(154087)
SECTION VI
PARTS LIST
Color Selector......www.midmark.com
NOTE: This model uses Pebble Grey painted components.
MA543500
Item
1
2
3
4
5
6
7
8
9
Part No.
Description
154087-xxx
Double Articulating Headrest (includes items 1 thru 18) ...................... 1
• Headrest Housing ............................... 1
• Stop Pin .............................................. 8
• Spring Housing ................................... 1
• Spring.................................................. 8
• Screw .................................................. 2
• Release Plate...................................... 1
• Pin Housing......................................... 1
• Screw .................................................. 2
• Decorative Disc ................................... 4
•
•
•
•
•
•
•
•
•
121911-00
121918-3
121913-50
103314
122784
121917-2
121912-50
122096
121945
Qty
Item
10
11
12
13
14
15
16
17
18
Part No.
Description
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
152905-50
122772-3
122778
053-1333-50
121915-50
122065-2
122089-50
121488
154079-xxx
154080-xxx
Qty
Tang Assembly ....................................1
Pivot Pin ..............................................2
Set Screw ............................................1
Plug .....................................................2
Button ..................................................1
Spacer .................................................2
Screw...................................................1
Set Screw ............................................1
Vacu Form Upholstery .........................1
Plush Upholstery .................................1
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 4/08
4/03
Page 6-28
Printed in U.S.A.
Return To Table Of Contents
Single Articulating
Headrest
(153199)
SECTION VI
PARTS LIST
16
22
7 19
6
3
2
3
15
8
15 18
17
6
14
5
4
10
11
9
21
20
Color Selector......www.midmark.com
12
13
1
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
MA613400i
Item
1
2
3
4
5
6
7
8
9
10
11
Part No.
Description
153199
Single Articulating Headrest (includes items 1 thru 20) ...................... 1
• Spring ................................................. 4
• Headrest Receptacle .......................... 1
• Screw .................................................. 6
• Stop Pin .............................................. 4
• Decorative Disc................................... 2
• Plug..................................................... 4
• Back Cover ......................................... 1
• Pin Housing ........................................ 1
• Pivot Pin.............................................. 1
• Screw .................................................. 2
• Release Plate ..................................... 1
•
•
•
•
•
•
•
•
•
•
•
103314
121493-50
121784
121918-3
121945
(N.L.A.)
122677
122757-50
122772-3
122096
122776-2
Qty
Item
Part No.
Description
12
13
14
15
16
17
18
19
20
21
• 122777-50
• 122778
• 122784
• 122775
• 122805-50
• 153258-50
• 185171
• 275184
• 153249-50
154090-xxx
154092-xxx
154089-xxx
154089-xxx
• Spring Housing....................................1
• Screw (use adhesive #042-0024-00)...1
• Screw ..................................................1
• Release Plate Rocker..........................2
• Mounting Plate ....................................1
• Push Button Assembly ........................1
• Lubricant ..........................................AR
• Foam Tape .......................................AR
• Tang Weldment ...................................1
Headrest Board (vacu-form) ..................1
Headrest Board (plush)..........................1
Magnetic Cushion (vacu-form)...............1
Magnetic Cushion (plush) ........................
22
Qty
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606
Rev. 8/6/14
Page 6-29
Printed in U.S.A.
Return To Table Of Contents
Single Articulating Headrest
(154078)
SECTION VI
PARTS LIST
16
22
7 19
6
3
2
3
15
8
15 18
17
6
14
5
4
10
11
9
21
20
12
13
1
NOTE: This model uses Pebble Grey painted components.
MA613400i
Item
1
2
3
4
5
6
7
8
9
10
11
Part No.
Description
154078-xxx
Single Articulating Headrest (includes items 1 thru 22) ...................... 1
• Spring ................................................. 4
• Headrest Receptacle .......................... 1
• Screw .................................................. 6
• Stop Pin .............................................. 4
• Decorative Disc................................... 2
• Plug..................................................... 4
• Back Cover ......................................... 1
• Pin Housing ........................................ 1
• Pivot Pin.............................................. 1
• Screw .................................................. 2
• Release Plate ..................................... 1
•
•
•
•
•
•
•
•
•
•
•
103314
121493-50
121784
121918-3
121945
053-1333-50
122677-01
122757-50
122772-3
122096
122776-2
Qty
Item
12
13
14
15
16
17
18
19
20
21
22
Part No.
Description
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
122777-50
122778
122784
122775
122805-50
153258-50
185171
275184
153249-50
154090-xxx
154092-xxx
154089-xxx
154089-xxx
Qty
Spring Housing.................................... 1
Screw (use adhesive #042-0024-00)... 1
Screw ..................................................1
Release Plate Rocker.......................... 2
Mounting Plate .................................... 1
Push Button Assembly ........................1
Lubricant .......................................... AR
Foam Tape ....................................... AR
Tang Weldment ................................... 1
Headrest Board (vacu-form) ................ 1
Headrest Board (plush) ....................... 1
Magnetic Cushion (vacu-form) ............ 1
Magnetic Cushion (plush).................... 1
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 8/6/14
Page 6-30
Printed in U.S.A.
Return To Table Of Contents
IV Armboard
(152565)
SECTION VI
PARTS LIST
14
17
2
10 7
6
3
5
1
11
8
9
4
15
4 16
13
12
1
NOTE: Substitute Pebble Grey painted parts, located in manual, when necessary.
MA613300i
Item
1
2
3
4
5
6
7
8
Part No.
Description
152565
IV Armboard
(includes items 1 thru 17) ......................1
• Knob (use adhesive #042-0024-00) ....2
• Legrest Hinge ......................................1
• Shoulder Screw ...................................1
• Screw ..................................................6
• Toe Block .............................................1
• Armboard Rod .....................................1
• Screw (use adhesive #042-0024-00)...2
• Bottom Cover.......................................1
•
•
•
•
•
•
•
•
117366
118249-2
120611-2
120950
121839-50
121840-2
121850
121847-50
Qty
Item
9
10
11
12
13
14
15
16
17
Part No.
Description
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
121848-50
121845-50
121853-50
152558-50
152563
152564xxx
177723
275184
152562
Qty
Mounting Block ................................... 1
Mounting Bracket ................................ 1
Strut .................................................... 1
Post Assembly .................................... 1
Slide Assembly ................................... 1
Upholstery........................................... 1
Velcro (loop - female) ................... [.011]
Foam Tape ..................................... [.25]
Arm Band ............................................ 1
(N.L.A. denotes “No longer Available”)
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 12/09
Page 6-31
Printed in U.S.A.
Return To Table Of Contents
IV Armboard
(154088)
SECTION VI
PARTS LIST
14
17
2
10 7
6
3
5
1
11
8
9
4
15
4 16
13
12
1
NOTE: This model uses Pebble Grey painted components.
MA613300i
Item
1
2
3
4
5
6
7
8
Part No.
Description
154088-xxx
IV Armboard
(includes items 1 thru 17) ...................... 1
• Knob (use adhesive #042-0024-00).... 2
• Legrest Hinge...................................... 1
• Shoulder Screw................................... 1
• Screw .................................................. 6
• Toe Block ............................................ 1
• Armboard Rod .................................... 1
• Screw (use adhesive #042-0024-00) .. 2
• Bottom Cover ...................................... 1
•
•
•
•
•
•
•
•
117366
118249-2
120611
120950
121839-50
121840-2
121850
121847-50
Qty
Item
Part No.
Description
9
10
11
12
13
14
15
16
17
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
121848-50
121845-50
121853-50
152558-50
152563-01
152564xxx
177723
275184
152562
Qty
Mounting Block ....................................1
Mounting Bracket.................................1
Strut .....................................................1
Post Assembly .....................................1
Slide Assembly ....................................1
Upholstery ...........................................1
Velcro (loop - female)....................[.011]
Foam Tape......................................[.25]
Arm Band ............................................1
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 4/08
Page 6-32
Printed in U.S.A.
Return To Table Of Contents
L/R Light Bracket Components
(non rotational units only)
SECTION VI
PARTS LIST
1
2
3
4
5
6
17
7
25
8
19
18
16
22
15
24
14
23
20
21
13
9
12
10
11
NOTE: This model uses Pebble Grey painted components.
DA2555i
Item
1
2
3
4
5
6
7
8
9
10
11
12
Part No.
Description
029-3002-00
L/R Arm Adapter-Non Rotational Only
(includes items 1 thru 26) ...................... 1
• Bracket Cover ..................................... 1
• Screw .................................................. 4
• Envelope ............................................. 1
• Flow Diagram...................................... 1
• Foam Tape (per foot) .......................... 1
• Screw .................................................. 1
• Washer................................................ 1
• Cord Clip ............................................. 1
• Nut ...................................................... 1
• Cable Clamp ....................................... 1
• Screw .................................................. 2
• Screw .................................................. 1
•
•
•
•
•
•
•
•
•
•
•
•
122638-01
121981-50
S006-00895
TPW1700
275184
122552
122554
109191
122357
122636
105480
121127
Qty
Item
Part No.
Description
13
14
15
16
17
18
19
20
21
22
23
24
25
26
• 122539-50
• 115300
• 153054-50
• 030-1465-50
• 122547
•042-0206-00
• 122550
• 122549
• 107995
• 122554
• 122553
• 040-0010-109
• 061-0819-00
• 121877
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Qty
Wire Harness Plate .............................1
Screw ..................................................2
Mounting Bracket.................................1
Lower Arm Mounting Bracket ..............1
Set Screw ............................................3
Screw ..................................................1
Light Arm Stop Bumper .......................1
Unit Arm Stop Bumper ........................1
Screw ..................................................1
Washer ................................................1
Nut.......................................................1
Screw ..................................................1
Extension Bolt Cover ...........................1
Cable Clamp (not shown) ....................1
Always Specify Model & Serial Number
© Midmark Corporation 2000 SF-1606 Rev. 5/10
Page 6-33
Printed in U.S.A.
Return To Table Of Contents
COMMENTS
The Technical Publications Department of Midmark
Corporation takes pride in its publications. We are sure
that our manuals will fill all of your needs when you are
performing scheduled maintenance, servicing, or
repairs on a Midmark product.
However, if you find any errors or feel that there should
be a change, addition, or deletion to a manual, please
let us know!
Page(s) and Paragraph(s) Needing Changed:
Description of Error or Desired Change:
Please fax or mail a copy of this completed comment
sheet to:
Midmark Corporation
ATTN: Technical Publications Department
60 Vista Drive
Versailles, Ohio 45380
Fax: (937) 526-5542
© Midmark Corporation 2000 SF-1621
Page 7-1
Printed in U.S.A.
Return To Table Of Contents
FAX ORDERING FORM
(SERVICE PARTS ONLY)
NOTES:
•
•
ALL BLOCKED AREAS MUST BE COMPLETED.
USE FOR NON-WARRANTY FAX ORDERS ONLY. WARRANTY ORDERS MUST BE TELEPHONED IN (1-800-MIDMARK).
ATTENTION: SERVICE DEPARTMENT FAX#: 877-249-1793
ACCT #:
P.O. #:
DATE:
NAME:
SHIP TO:
ADDRESS:
CITY, ST.:
CONTACT:
PHONE:
NON-EMERGENCY ORDER - TO SHIP WITHIN 72 HOURS IF
PART(S) IN STOCK.
EMERGENCY ORDER - TO SHIP WITHIN 24 HOURS IF PART(S)
IN STOCK (IF ORDER IS RECEIVED BEFORE 1:00 P.M. E.S.T).
SEND NOTIFICATION IF PARTS ARE NOT AVAILABLE TO SHIP
WITHIN 24 HOURS VIA
E-MAIL OR FAX TO:
QTY.
PART #
DESCRIPTION
OTHER
METHOD OF SHIPMENT
UPS
FED EX
NEXT DAY A.M.
NEXT DAY A.M.
NEXT DAY P.M.
NEXT DAY P.M.
2ND DAY
2ND DAY
GROUND
ECONOMY
(SPECIFY COLOR OF ITEM IF APPLICABLE)
COLOR CODE
PRICE/PER
TOTAL COST: $
© Midmark Corporation 2000 Rev. 1/07
Page 7-2
Printed in U.S.A.
Return To Table Of Contents
Return To Table Of Contents
Midmark Corporation
60 Vista Drive
P.O. Box 286
Versailles, Ohio 45380-0286
937-526-3662
Fax 937-526-5542
midmark.com
Subject to change without notice.
Refer to www.Documark.com for latest revision.
© Midmark Corporation - 2005
Printed in U.S.A.
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