null  User manual
FREQUENTLY ASKED
QUESTIONS
CHAIRS
UNITS
LIGHTS
COMPRESSORS
VACUUM PUMPS
CHAIRS
In General
Why are the hydraulic chair vent lines leaking oil? - FAQ #16
Why does the hydraulic chair back fall overnight? - FAQ #41
J-3 or V or J/V-Generation
How are soft limits reset? (new electronics, 3-function) - FAQ #2
Why is the chair beeping? - FAQ #7
Why is only one control working? (3-function, w/2 Controls) - FAQ #31
aXcs II or Silhouette or Advantage by DentalEZ
How are soft limits reset? (new electronics, 2-function) - FAQ #4
Why is the chair beeping? - FAQ #7
Old J-Chair
Why does the motor run but there is no movement? - FAQ #6
How is an old J-Chair model determined? - FAQ #38
aXcs or E-3000
How are soft limits reset? (old electronics, 2-function) - FAQ #3
Why won’t the chair work? (3 auto buttons) - FAQ #14
Why is the chair beeping? (old electronics) - FAQ #15
Why won’t the base go down and the chair is beeping? (E-3000) - FAQ #22
Why is the chair beeping after 45 seconds? (E-3000) - FAQ #35
Why is the is the touchpad not working? (E-3000) - FAQ #36
Why does the chair beep after installing a new potentiometer? - FAQ #39
Old Advantage or E-2000
Why is there no base function? - FAQ #8
Why won’t the chair work? - FAQ #19
How are limit adjustments made? - FAQ #20
Main Menu
UNITS
In General
Why does the unit have no water? - FAQ #5
Why does water continue to drip or run? - FAQ #17
Why does the cup fill or bowl rinse drip constantly? - FAQ #21
Why is the drive air only 20 PSI? - FAQ #24
Why is there no output from the power module? - FAQ #27
Why is air blowing out of holder after a manifold upgrade? - FAQ #34
Why isn’t the fiber optic bright enough? - FAQ #42
Galaxy®
How is a handpiece actuator valve adjustment made? (Trad. head) - FAQ #45
Main Menu
LIGHTS
In General
Why is the bulb not lighting? (17 VAC at Socket) - FAQ #26
How is a light pivot adjustment made? - FAQ #44
Lumina
How is sensor adjustment made? - FAQ #10
Why won’t the sensor work? - FAQ #40
Main Menu
COMPRESSORS
In General
What are the buck-boost transformer instructions? - FAQ #12
Why won’t the lubricated compressor build pressure? - FAQ #18
Why is there moisture in the air from the compressor? - FAQ #25
Why won’t the lube-free compressor build pressure? - FAQ #28
700 Series
Why is the compressor using oil? - FAQ #30
Main Menu
VACUUM PUMPS
In General
What are the buck-boost transformer instructions? - FAQ #12
How is a new transformer wired in an old relay box? (V-Series) - FAQ #13
Why won’t the vacuum relay engage, and the pump doesn’t turn on? - FAQ #23
Why does the vacuum pump shut down, cool then restart? - FAQ #29
Why does water leak from the anti-siphon valve? - FAQ #33
How is a master water control solenoid valve wired to plug in transformer? - FAQ #37
Single Pump (CV-101, CV-102)
How is a single pump wired to a remote lighted switch? - FAQ #1
Dual Pumps (MC-201, MC-202)
How
Why
Why
Why
are dual pumps wired to a remote lighted switch? - FAQ #9
is one pump weak? - FAQ #11
does pump make squealing/whistling sound? - FAQ #32
is vacuum from dual pump weak? - FAQ #43
Main Menu
How is a single pump wired to a remote lighted switch?
— NOTICE —
All wiring between the main control box and equipment should be Class B, lowvoltage. In most cases, a conduit is not required when using this type of wiring.
— WARNING —
Before proceeding with any electrical installation, comply with and
maintain all applicable local electrical code(s) and regulations.
Brown
IMPORTANT NOTE:
If not using a DentalEZ
Master Control Panel Kit,
proceed as follows:
Vacuum Pump
Relay Box
Yellow
Black
1. Position the master
switch in the desired
location.
2. Run the appropriate wires
to their respective
euipment location. (See
wiring chart below.)
L1 T1
L2 T2
3. Connect wires according
to the wiring diagram on
the right.
Load
(To Vacuum Pump)
Line Voltage
(To Source)
LEGEND
Wall-Mounted Switches
Shown from
Back of Switch Plate
Brown = Light
Yellow = Return
Black = Power
Vacuum
Junction Box
WIRING CHART
Model N o.
CV-101
CV-102
Vacuum Pumps
N o. of W ires W ire Under 150 ft. W ire Over 150 ft.
3
3
18 AW G
18 AW G
16 AW G
16 AW G
FAQ #1
How are soft limits reset?
(New Electronics, 3-Function)
1. Disconnect power to the chair. Then remove the pump cover.
2. Flip dip switch #4 to the ON position (away from the board).
3. Reconnect power to the chair.
UP LIMITS
a. Using the manual buttons, raise the base until the chair starts beeping.
b. Lower the base until the chair stops beeping. Then lower the base a little more so that it
is not too close to the safety limit switch.
c. Raise the back until the chair starts beeping.
d. Lower the back until the chair stops beeping. Then lower the back a little more so that it
is not too close to the safety limit switch.
e. Raise the toe of the seat until the chair starts beeping.
f. Lower the toe of the seat until the chair stops beeping. Then lower the seat a little more so
that it is not too close to the safety limit switch.
g. Press and release auto button #1, but do not hold. (A short beep will sound when the
button is pressed, another beep will sound when the button is released.)
DOWN LIMITS
a. Put your foot on the base plate of the chair under the base. Then lower the base until the
base cover touches your foot and the chair starts beeping.
b. Raise the base until the chair stops beeping. Then raise the base a little more.
c. Lower the back all the way down. (It will not beep .) Then raise the back slightly.
d. Lower the toe of the seat until the chair starts beeping. Then raise the toe of the seat
until the chair stops beeping. Then raise the toe a little more.
e. Press and release auto button #2, but do not hold. (A short beep will sound when the button
is pressed, another beep will sound when the button is released.)
4.
5.
6.
7.
Disconnect power to the chair.
Flip dip switch #4 to the OFF position.
Reconnect power to the chair and replace the pump cover.
Using the manual buttons, set the chair to a desired position. Then press and hold an auto
button for appoximately 5 seconds. (A short beep will sound when the button is pressed, another
beep will sound when the button is released.) Repeat this step to set a total of 8 auto positions
(4 A-green LED and 4 B-yellow LED).
Chairs
FAQ #2
How are soft limits reset?
(Old Electronics, 2-Function)
1.
2.
3.
4.
Disconnect power to the chair. Then remove the pump cover.
Remove the white wire on JP5 on the control board.
Install a jumper on the two pins on JP5.
Reconnect power to the chair.
UP LIMITS
a. Raise the base until the chair starts beeping.
b. Lower the base until the chair stops beeping. Then lower the base a little more so that it
is not too close to the safety limit switch.
c. Raise the back until the chair starts beeping.
d. Lower the back until the chair stops beeping. Then lower the back a little more so that it
is not too close to the safety limit switch.
e. Press and release auto button #1, but do not hold. (A short beep will sound when the
button is pressed, another beep will sound when the button is released.)
DOWN LIMITS
a. Put your foot on the base plate of the chair under the base. Then lower the base until the
base cover touches your foot and the chair starts beeping.
b. Raise the base until the chair stops beeping. Then raise the base a little more.
c. Lower the back all the way down. (It will not beep .) Then raise the back slightly.
d. Press and release auto button #2, but do not hold. (A short beep will sound when the button
is pressed, another beep will sound when the button is released.)
5.
6.
7.
8.
Disconnect power to the chair.
Remove the jumper on JP5 and reinstall the white wire.
Reconnect power to the chair and replace the pump cover.
Using the manual buttons, set the chair to a desired position. Then press and hold an auto
button for appoximately 7 seconds. (A short beep will sound when the button is pressed, another
beep will sound when the button is released.) Repeat this step to set a total of 3 auto positions.
Chairs
FAQ #3
How are soft limits reset?
(New Electronics, 2-Function)
1. Disconnect power to the chair. Then remove the pump cover.
2. Flip dip switch #4 to the ON position (away from the board).
3. Reconnect power to the chair.
UP LIMITS
a. Using the manual buttons, raise the base until the chair starts beeping.
b. Lower the base until the chair stops beeping. Then lower the base a little more so that it
is not too close to the safety limit switch.
c. Raise the back until the chair starts beeping.
d. Lower the back until the chair stops beeping. Then lower the back a little more so that it
is not too close to the safety limit switch.
e. Press and release auto button #1, but do not hold. (A short beep will sound when the
button is pressed, another beep will sound when the button is released.)
DOWN LIMITS
a. Put your foot on the base plate of the chair under the base. Then lower the base until the
base cover touches your foot and the chair starts beeping.
b. Raise the base until the chair stops beeping. Then raise the base a little more.
c. Lower the back all the way down. (It will not beep .) Then raise the back slightly.
d. Press and release auto button #2, but do not hold. (A short beep will sound when the button
is pressed, another beep will sound when the button is released.)
5.
6.
7.
8.
Disconnect power to the chair.
Flip dip switch #4 to the OFF position.
Reconnect power to the chair and replace the pump cover.
Using the manual buttons, set the chair to a desired position. Then press and hold an auto
button for appoximately 5 seconds. (A short beep will sound when the button is pressed, another
beep will sound when the button is released.) Repeat this step to set a total of 3 auto positions.
Chairs
FAQ #4
Why does the unit have no water?
Yes Do the sinks No
have water?
No Is master switch Yes
Place master switch
in the "ON" position.
Check building water supply
or master water control.
in "ON" position?
Yes Is unit supplied with No
80 psi of air pressure?
No Does unit have clean water Yes
Check air supply and/or adjust
air regulator to 80 psi.
system and city water?
Yes
No
No Is the stop Yes
Open the
stop valve.
City
Is city water
supplied to unit?
valve open?
Yes Is there an air signal to the No
Place the selector toggle
in the bottle position
and have a plumber
supply water to the unit.
Does the gauge on the
Adjust the water
regulator to 40 psi
and/or check supply
line from the pilot
valve for kinks.
Is there water present
No
Yes
at the coolant
water adjustment valve?
Check lines for
kinks from post
mounted console
box to control head.
Units
Units
Fill the bottle
with water.
Is there water present
Yes at the distribution
manifold in the post
mounted console box?
No
Check the water line for kinks
from the USC to the selector
valve and from the selector to
the distribution manifold.
seperate from the manifold?
Place toggle
in "ON"
position.
Yes Is there air pressure No
to ON/OFF toggle?
Yes Does the gauge for No
the clean water
system read 40 psi?
Yes Is coolant water adjustment No
Check lines for kinks
through the pinch valve.
Is the toggle for the
clean water system No
in the "ON" position?
have water in it?
Check signal line for kink.
If none, replace pilot
valve. PN: 3800-537
USC box read 40 psi?
Yes
No Does the bottle Yes
actuator on the pilot valve?
No water regulator in the Yes
Is selector in city Bottle
or bottle position?
Check the air
supply line
for any kinks
or breaks.
Adjust to 40 psi
if adjustable.
Replace the
manifold.*
* For part # information contact Tech Service at 1-866-DTE-INFO.
FAQ #5
Why does the motor run but there
is no movement? (old J-Chair)
Yes
Replace
screw tube.*
Is the shaft
turning?
No
Replace
motor gear.*
* For part # information contact Tech Service at 1-866-DTE-INFO.
Chairs
FAQ #6
Why is the chair beeping?
1 Beep & a Pause
Is beeping 1 beep and a 3 Beeps & a Pause
pause, 2 beeps and a pause
or 3 beeps and a pause?
2 Beeps & a Pause
1 beep and
a pause Click Here!
Chairs
2 beeps and
a pause Click Here!
3 beeps and
a pause Click Here!
FAQ #7
Why is the chair beeping?
(1 beep and a pause)
Yes Check the base up safety No
limit switch. Is it activated?
Yes
On control, will No
base down work?
Run base
Yes down.
Does
Yes
beeping stop?
No
Reset soft limits,
reprogram auto
functions (all 8)
and adjust speeds
as needed.
Bypass safety
switch. Does Yes
beeping stop?
No
Replace
safety switch.
PN: 3801-431
No
Check wires from
the safety switch
Yes to the control No
board. Are any
broken or pulled
from connectors?
Repair or
replace harness.
PN: 3801-768
No
Reset limits and
adjust speeds
as necessary.
Chairs
Yes
Replace
control board.
PN: 3801-765
prior to
July, 2003?
Unplug chair, remove
"D" connector on P4
on the control board
and remove acorn
Yes nuts on back side No
of conrol board, reset
"D" connector, then
reset power plug.
Does base run down?
safety switches?
Yes
Yes Release cover. Does
beeping stop?
No
Replace
safety switch.
PN: 3801-431
Bypass safety
Yes switch. Does
beeping stop?
No
Was chair
Yes manufactured
Is safety cover
No stuck up activating
Determine and
repair cause of
sticking cover.
Check voltage
across
the black
No and white
wires.
Is there
2.188 VDC ± .150?
No
Run base down.
Reset connection
Yes to safety switch.
Reset power. Does
beeping start?
Replace
safety switch.
PN: 3801-431
Bypass safety
switch. Will
base run down?
Check base safety
circuit for loose or
broken wires. Repair
or replace harness.
PN: 3801-768
Repair or
replace harness.
PN: 3801-768
Check wires from
the safety switch
Yes to the control
board. Are any
broken or pulled
from connectors?
No
Replace
control board.
PN: 3801-765
Reset soft
limits, reprogram
auto functions
(all 8) and adjust
speeds as needed.
Yes Was chair manufactured
prior to July, 2003?
No
Unplug chair, remove "D"
connector on P4 on the
control board and remove No
Yes acorn nuts on back side of
the conrol board, reset "D"
connector, then reset power
plug. Does beeping stop?
Replace
control board.
PN: 3801-765
FAQ #7A
Why is the chair beeping?
(2 beeps and a pause)
the back up
Yes Check
safety limit switch. No
Is it activated?
No On control, will Yes
Do a continuity check
on safety limit switch. No
Does it read closed?
back down work?
Yes Bypass safety switch.
Does beeping stop?
No
Replace safety
switch.
PN: 3801-431
Check the wires and
connections from the
switch to the control
board for broken wires,
loose connections or
pins backed out of
connectors. Repair as
needed or replace the
harness. PN 3801-768
Yes
Run back down. No
Does beeping stop?
Yes
Bypass safety
switch. Does No
beeping stop?
Reset soft limits,
reprogram auto
functions (all 8)
and adjust speeds
as needed.
Yes
Replace safety
switch.
PN: 3801-431
Reset soft limits,
reprogram auto
functions (all 8)
and adjust speeds
as needed.
Chairs
Replace back up
safety switch.
PN: 3801-431
Check wires from safety
switch to control board. Yes
Are any broken or
pulled from connectors?
Repair or
replace harness.
PN: 3801-768
No
Was chair manufactured No
prior to July, 2003?
Yes
Unplug chair, remove "D"
connector on P4 on the
control board and remove
Yes acorn nuts on back side
No
of conrol board, reset "D"
connector, then reset power
plug. Does beeping stop?
Replace control
board.
PN: 3801-765
FAQ #7B
Why is the chair beeping?
(3 beeps and a pause)
Yes
Check seat safety No
limit switches.
Are either activated?
Up Is seat up Down
Run seat the
down off limit,
reset the soft
limits, reprogram
the autos (all 8)
& adjust speeds
as needed.
or down?
Using control,
does seat up No
function run?
Using control,
Yes does seat down No
function run?
Replace safety switch.
PN: 3801-431
Bypass safety
Yes switch. Does
beeping stop?
Run the
seat up.
No Does the Yes
beeping
stop?
Check wires from safety
Yes switch to control board.
Are any broken or
pulled from connectors?
No
Replace control board.
PN: 3801-765
Replace switch
or switches
as needed.
PN: 3801-431
Yes
Yes
No
Repair or replace
harness.
PN: 3801-768
Do a continuity
check on safety No
limit switch. Does
it read closed?
Reset soft limits,
reprogram auto
functions (all 8)
and adjust speeds
as needed.
Check the wires
and connections
from switch to
the control board Yes
for broken wires,
loose connections
or pins backed out
of connectors.
Are any found?
Replace
harness.
PN: 3801-768
No
No Was chair manufactured
prior to July, 2003?
Yes
Reset soft limits,
reprogram auto
functions (all 8)
and adjust speeds
as needed.
Chairs
Unplug chair, remove "D" connector
on P4 on control board and remove
Yes acorn nuts on back side of conrol No
board, reset "D" connector, then
reset power plug. Does beeping stop?
Replace control board.
PN: 3801-765
FAQ #7C
Why is there no base function?
(E-2000/old Advantage)
Yes Does the base No
motor run?
Replace
chain.
Yes Is the chain
broken?
No
Unplug power to the chair.
Unplug 8-pin connector from
Yes the control board. Place a No
jumper on the red & white
wire. Replug power to chair.
Does the motor run?
Yes Does the jack No
screw turn?
Is the ball
Yes nut still No
attached to
lifting yoke?
Replace the
jack screw
assembly.
If sprocket on
motor does
not turn but
motor runs,
replace motor.
Reattach ball nut
or replace jack
screw assembly.
Remove jumper on red & white
wire. Plug 8-pin connector back
into the control board. Remove
the 10-pin connector from the
control board and place a
Yes
jumper on the pins where the
red & white wires connect
(this will bypass the base switch).
Reconnect power to chair.
Does the motor run?
No
Check base switch
and wires.
Chairs
Replace
control board.
Check power to
red & white wire
on the base motor.
Yes Is there120VAC
present to motor
when pressing the
base up switch?
No
Replace base
wire harness.
Replace base motor
or limit switches
inside motor.
FAQ #8
How are dual pumps wired to a remote lighted switch?
— NOTICE —
All wiring between the main control box and equipment should be Class B, lowvoltage. In most cases, a conduit is not required when using this type of wiring.
— WARNING —
Before proceeding with any electrical installation, comply with and
maintain all applicable local electrical code(s) and regulations.
ON/OFF Switches
Mounted on Dual Frame
IMPORTANT
NOTE: If not
using a DentalEZ
Master Control
Panel Kit, proceed as
follows:
Brown
Light Common
Brown
Light Common
Yellow
Vacuum
Pump
Relay
Box
L1 T1
L2 T2
Line Voltage
(To Source)
3. Connect
wires
according to
the wiring
diagram on
the right.
Return
2. Run the
appropriate
wires to their
respective
euipment
location. (See
wiring chart
below.)
Vacuum
Pump
Relay
Box
Power
1. Position the
master switch
in the desired
location.
Yellow
Black
Black
Load
(To Vacuum
Pump)
Wall-Mounted
Switch
Shown from
Back of
Switch Plate
L1 T1
L2 T2
Line Voltage
(To Source)
Load
(To Vacuum
Pump)
LEGEND
Vacuum
Brown = Light
Yellow = Return
Black = Power
Junction Box
WIRING CHART
Model No.
MC-201
MC-202
Vacuum Pumps
No. of W ires W ire Under 150 ft. W ire Over 150 ft.
6
6
18 AW G
18 AW G
16 AW G
16 AW G
FAQ #9
How is sensor adjustment made?
(Lumina® Light)
The Lumina Light sensor is factory pre-set at 2-6 inches. This distance may be
adjusted up to 18 inches. If adjustment is necessary, do the following:
1. Locate the sensor adjustment screw hole on the front of the light frame
under the light shield.
2. Using a small flat-head screwdriver, slowly and carefully turn the adjustment
screw clockwise to lengthen the sensor distance (hand can be further from
sensor), or counterclockwise to shorten the sensor distance (hand has to be
closer to sensor.).
NOTE: A small amount of adjusting does a lot.
Lights
FAQ #10
Why is one pump weak?
Yes Does the dual pump have No
a water recirculator?
Yes
Check lines from recirculator No
to intake lines. Are they clogged?
Clean lines and make sure
recirculator cleaner is
used once a month.
Yes
Does the pump have No
sufficient water supply?
Correct water supply:
1 HP = 1/2 gal. per min.
2 HP = 1 gal. per min.
With the left pump running,
Yes remove the intake hose from the No
right pump. Is vacuum present?
Clean or replace check
valve on the right side
of the intake manifold.
PN: 64568191, 3/4"
PN: 64568193, 1"
With the right pump
running, remove the
Yes
No
intake hose from
the left pump.
Is vacuum present?
Clean or replace check valve on
the left side of the intake manifold.
PN: 64568191, 3/4"
PN: 64568193, 1"
Yes
Yes
Check water flow
from restrictor to No
the impeller housing.
Is flow sufficient?
Is the voltage to the No
vacuum pumps correct?
Check impeller housing
for wear or build up.
Clean or replace
flow restrictors.
PN: 64568192, 1 HP
PN: 64622010, 2 HP
Have electrician provide
proper power supply.
Vacuum Pumps
Pumps
Vacuum
FAQ #11
Vacuum Pumps
Compressors
Page 1 of 2
FAQ #12
Vacuum Pumps
Compressors
Page 2 of 2
FAQ #12
Vacuum Pumps
BROWN
(64625089)
CIRCUIT
BREAKER
BLUE (64625063)
YELLOW
(64625082)
TERMINAL
BLOCK
(64615023)
5
4
3
5
4
TRANSFORMER
(64637018)
Black/White
Brown
6
6
BLACK
(64625077)
BROWN&WHITE
(65625074)
WHITE
BLUE
BROWN
BLACK
RPL. 15 AMP BREAKER (3802-120)
RPL. 8 AMP BREAKER (3801-911)
RED
RELAY
(64568133)
BROWN
GREEN&YELLOW
LIGHT BLUE
TERMINAL BLOCK
JUMPER (64615021)
Terminal
Block
3
Brown/White
2
1
Yellow
1
RED
2
BROWN
(64625085)
0
RED
SPARE
FUSE
HOLDER
(64561005)
YELLOW
(64625084)
FUSE
HOLDER
(64568160)
PURPLE
(64625073)
RPL. 115V FUSE (64568131)
RPL. 230V FUSE (64568130)
BLACK
(64625083)
How is a new transformer wired in an old relay box?
(V Series)
New Transformer
Old Relay Box
Brown
Yellow
Black
Fuse
Holder
Alt.Voltage
Fuse Holder
Black
Yellow
Blue
Black
Blue
Transformer
Black
Yellow
Purple
Relay
White
Green
Red
FAQ #13
Why is the chair not working? (3 auto buttons)
Yes
No Does chair
Yes
Replace fuse.
PN: 3801-519
start beeping?
Yes Engage safety cover
Does control board
No
click when powered up?
No
Using a voltmeter, check Yes
fuses. Do they check good?
Immediately How fast? 45 Sec.
does chair beep?
Yes Using a voltmeter, check No
receptacle. Is there 115V?
No
Replace
control
board. PN:
3801-541
Using a voltmeter, do an
ohms reading across pins
1 & 3 (two outside) on Yes
thebpack potentiometer.
Is there 5K± 10%?
Using a voltmeter, do a continuity
Yes check between the brown/black
wire on JP7 on the control board
to the gray wire at the back potentiometer. Is there an open circuit?
Could be wire or
safety switch issue.
No
No
Replace back
potentiometer.
PN: 3801-546
back and base
Yes Check
potentiometers. Are No
either at full rotation?
Reset soft limits. Make sure both gears are
turning on the base potentiometer. If
membrane-style back potentiometer, make
sure actuator is pointing toward toe of chair.
No
Measure voltage across the
two outside pins at JP103. Yes
Is there 5 VDC?
No
Replace interface
board. PN: 3801-661
Chairs
Chairs
Do same test on Yes
No base
potentiometer.
Is there 5K± 10%?
Replace base
potentiometer.
PN: 3801-435
Check for breaks or
loose connections from
back and base potentiometers to control board.
Replace potentiometer.
PN: 3801-546, Back
PN: 3801-435, Base
Replace control
board. PN: 3801-541
No
Measure voltage across the
two outside pins at JP104. Yes
Is there 5 VDC?
Take ohms reading across
terminals 2 & 3 and terminals Yes
1 & 3. Is there 5K± 10% on
either potentiometer?
Have electrician
provide 115V.
Replace control
board. PN: 3801-541
Measure voltage on the Yes
black wire at controller.
Is there 5 VDC?
No
Inspect the wires from the
controller to the control board.
Does chair beep
when a button Yes
is activated on
the controller?
Voltage is going from controller to control
board. Inspect connections and wires. Then
refer to the Control Not Working chart or
call Techincal Support, 1-866-DTE-INFO.
No
Replace the membrane PN: 3801-844, or if
needed, the complete controller PN: 3801-644.
FAQ #14
Why is the chair beeping? (old electronics)
Yes Reset power. Wait 45 No
sec. to 1 min. Does
chair
start beeping?
45 Sec. How soon? Immediately
Check connections
Does the sum of the ohms
on all safety switches
across leads 1 & 2 added
and potentiometers.
Yes Is there continuity from
to the sum of the ohms
brown/black wire at JP7 No
Yes across leads 2 & 3 equal the No
on board to gray wire
reading across leads 1 & 3?
at back potentiometer?
Are there any wire brakes
Yes from either the base or
back potentiometer to
the control board?
No
Check for loose prongs on the control
board. Replace board as needed: E3000
with back switches - PN: 3801-411; E3000
w/o back switches and aXcs interface
board - PN: 3801-661; replacement
control board - PN: 3801-541or upgrade
chair to new electronics.*
* Contact Tech Service at 1-866-DTE-INFO.
Chairs
Replace potentiometer:
Base: PN: 3801-435
Back: E3000 spiral bar PN: 3801-430; all other
E3000 - PN: 3801-546;
aXcs Chair (3 autos) PN: 3801-662 or upgrade
chair to new electronics.*
Are any safety
switches No
Yes
unplugged
or activated?
If unplugged,
secure plugs.
If switch is bad,
replace switch:
for back switch PN: 3801-444;
Base or Safety PN: 3801-431
Replace harness:
E3000 with back
switches PN: 3801-438;
E3000 w/o back
switches or
aXcs Chair PN: 3801-570
FAQ #15
Why are the hydraulic chair vent lines leaking oil?
Plastic
Replace with
PN: 3802-110.
Chairs
Chairs
Are the vent
Metal
line fittings
plastic or metal?
Replace with
PN: 1117-135,
2533-057.
FAQ #16
Why does water contiune to run or drip?
No
Does air regulator
gauge read 80 PSI?
Set air regulator
No
to 80 PSI.
Yes
Does the water
stop when letting
off the foot control?
Replace covers.
Have a nice day!
Is the water regulator
or water bottle set at No
Yes
35-40 PSI?
While activating foot
No
control, remove signal
line to water control
Yes
block. Does water stop?
Replace the water
control block.
PN: 3800-417
Units
Units
Yes
No
Set water regulator
to 35-40 PSI.
Yes
Does the water stop
when letting off the
foot control?
Rebuild the water relay
in the foot control:
For AS, aXcs and Galaxy
series, Kit PN: 3801-181.
For Signature series
replace the drive air
valve, PN: 3800-478.
Replace covers.
Have a nice day!
FAQ #17
Why doesn't lubricated compressor build pressure?
Compressors
FAQ #18
Why won't the chair work? (E-2000/old Advantage)
Yes Is there 115V No
present at the
power outlet?
Check breaker and/or
have an electrician
provide 115V to chair.
Up Is the base in the Down
up position or
down position?
Replace the
base harness.
PN: 3800-796
Yes Drop the base cover.
Remove the chair top and the
Yes
base cover. Is there any
damage to the coiled harnesses?
Is there any damage to
the coiled harnesses?
No
No
Disconnect power cord. Unplug
the base harness from the harness
going to the control board. In the
Yes 8-positon molex plug at the top of No
the two coiled harnesses, jump the
green wire and the white wire
(pins #1 & #2). Replug the power
cord. Does the base run down?
Do continuity
checks on the Yes
switches. Do
they check good?
No
Replace any defective
switchs/switch harness:
Manual base switch PN: 3800-780;
Manual back switch PN: 3800-781;
Auto position switch PN: 3800-779;
Auto return switch PN: 3800-778
Chairs
Check voltage across the
black wire and the white
wire (pins #1 & 8) on the No
8-position molex plug at
the control board.
Is 115V present?
Yes
Repair or replace
the harness between
the base harness and
the control board.
Disconnect power cord. Unplug
the base harness from the harness
going to the control board. In the
No 8-positon molex plug at the top of Yes
the two coiled harnesses, jump the
red wire and the white wire
(pins #1 & #5). Replug the power
cord. Does the base run up?
Do continuity
checks on the
wires in the Yes
base harness.
Do they all
check good?
Check voltage across
the back and the white No
wire from the power
cord. Is 115V present?
Replace the
control board.
PN: 3800-741
Replace the
base harness.
PN: 3800-796
Yes
No
Replace the
base harness.
PN: 3800-796
Replace the
base harness.
PN: 3800-796
Yes
Check limit switch
in motor. Does No
it check good?
Replace the
limit switch.
PN: 3800-006
Replace the motor.
PN: 3625-308
FAQ #19
How are limit adjustments made?
(Old Advantage or E-2000)
CHAIR BACK MOTOR ADJUSTMENT
1. Raise the chair to its full UP position with the back and toe tilted.
2. Remove the six screws that secure the motor cover and remove the cover.
3. Using one 7/16" open-end wrench, loosen the locknut on the adjusting screw for switch
“II” and use another 7/16" open-end wrench to turn the adjusting screw counterclockwise
to lower the back or clockwise to raise the back.
CAUTION: The total back adjustment is approximately 30 º from parallel. Over adjustment can
cause damage to the micro switch. DO NOT ADJUST SWITCH “I”.
4. After reaching desired adjustment, tighten the locknut and install the motor cover using the
screws removed. Then check for proper operation.
Switch “II”
Switch “I”
(Do Not Adjust)
Chair Back Motor
Switch “B”
Locknut
Locknut
Switch “A”
(Do Not Adjust)
Base Motor
BASE MOTOR ADJUSTMENT
1. Remove the screws that attach the bellows to the hangers and lower the bellows.
2. Using one 7/16" open-end wrench, loosen the locknut on switch “B” and use another
7/16" open-end wrench to turn switch “B” counterclockwise to lower.
CAUTION: There is a 2-3/4" total base height adjustment for the base motor. Over adjustment
can cause damage to the micro switch. DO NOT ADJUST SWITCH “A” .
3. After reaching desired adjustment, tighten the locknut and install the bellows using the
screws removed. Then check for proper operation.
Chairs
FAQ #20
Why does the cuspidor cup fill or
bowl rinse drip constantly?
Cup Fill
Is the cup fill or Bowl Rinse
bowl rinse dripping?
Disconnect the 1/8"
black tubing from the
Yes on/off valve with No
1/4" clear tubings.
Is air coming out
of the black tubing?
Replace the
poppet valve.
PN: 3801-207
Units
Units
Replace the
on/off valve.
PN: 3801-189
Disconnect the 1/8"
orange tubing from
Yes the on/off valve with No
1/4" clear tubings.
Is air coming out of
the orange tubing?
Replace the
poppet valve.
PN: 3801-207
Replace the
on/off valve.
PN: 3801-189
FAQ #21
Why won't the base go down and
the chair is beeping? (E3000)
Immediately Reset power. How fast does chair start
45 Seconds
beeping, immediately or after 45 seconds?
Do a continuity check between the gray wire at the
Yes back potentiometer and brown/black wire at the JP7 No
Replace the base potentiometer.
PN: 3801-435
connection on the control board. Is there continuity?
Replace back
potentiometer:
Spiral bar type PN: 3801-430
All others PN: 3801-546
Do a resistnce check on the back
Yes Are any safety switches No
No poentiometer between pins 1 and 3
activated or unplugged?
(two outside). Is reading close to 5K?
Yes
Replace the base
potentiometer.
PN: 3801-435
Do a resistnce check on the base
No poentiometer between pins 1 and 3
Using a paper clip or wire, bypass
all four safety switches and safety No
limit switches. Does beeping stop?
Yes
(two outside). Is reading close to 5K?
Yes
Replace the main
wiring harness:
For chair with back
switches - PN: 3801-438;
For chair without back
switches - PN: 3801-570
run down?
No
Do a continuity check on the wires
control board. Do they read closed?
Does chair beep
when base down No
is activated?
Yes
the control board. Do they read closed?
Yes
Yes
No
Reset soft limits.
Check the safety and safety
limit switches and replace
any defective switch or switches:
Back switch - PN: 3801-444;
Base up & safeties: - PN: 3801-431
Replace the interface board
PN: 3801-661. If no interface, call
Tech Service for upgrade information.
Replace control. Does
chair have back switches?
No
Electronics will have
to be upgraded.*
Replace
control.*
Check voltage coming from Yes
control at control board.
Does it read 2.30 VDC ±.150?
No
Run the base down
Yes and remove the bypass
on the safety switches.
Does chair start beeping?
Yes
No
Yes
Do a continuity check on the wires
No from
the back potentiometer to JP7 on
Replace the main
wiring harness:
For chair with back
switches - PN: 3801-438;
For chair without back
switches - PN: 3801-570
With all the safety switches and safety
limit switches bypassed, do a continuity
check between the gray wire at the back
potentiometer and the brown/black wire
at JP7 on the board. Does it read open?
Yes Will base
No from the base potentiometer to the
Footswitch - PN: 3625-493
Touchpad - PN: 3801-843
Do a resistnce check on the base
No poentiometer
between pins 1 and 3
Replace covers and
program if necessary.
(two outside). Is reading close to 5K?
Yes
Replace back
potentiometer:
Spiral bar type PN: 3801-430
All others PN: 3801-546
Do a resistnce check on
the back poentiometer
between pins 1 and 3 No
(two outside).
Is reading close to 5K?
Yes
Replace the main
wiring harness:
For chair with
back switches PN: 3801-438;
For chair without
back switches PN: 3801-570
Do a continuity check on
the wires from the back
potentiometer to JP7 on Yes
the control board.
Do any read open?
No
Does the chair have a
spiral bar potentiometer No
or other type?
Contact Technical
Service for electronics
upgrade information.
Yes
Is the gray wire toward the
outside of the chair on Other
the back potentiometer?
Spiral Bar
Plug the connectors to the
back potentiometer so that No
Yes the gray wire is toward the
outside of the chair.
Does the beeping stop?
* For part # information contact Tech Service at 1-866-DTE-INFO.
Chairs
FAQ #22
Why won't the vacuum relay engage
and the pump doesn't turn on?
A
>17V
Starting Letter
C, D, S or V
of Serial #
A, C, D, S or V
AC Voltage across 2 <17V
yellow wires on relay
reads >17V or <17V
<20V
AC Voltage across 2 >20V
yellow wires on relay
reads <20V or >20V
Replace relay
PN: 64568133
AC Voltage across
light blue and brown
No wires on left side of relay is Yes
<200V on 230V pump or
<100V on 115V pump
Replace transformer
PN: 64568195
AC Voltage across
black and purple
Yes
No
wires on left side of relay is
<208V on 230V pump or
<110V on 115V pump
Have electrician
install a buck/boost
transformer
(2 if a dual system)
Vacuum Pumps
FAQ #23
Why is the drive air only 20 PSI?
Yes Does regulator No
show 80 PSI?
Yes
Is the line
pressure
from the No
Yes
compressor 80 PSI
or greater?
Adjust the drive
air adjustment to the
manufacturer's
recommendation.
No
Move the 1/4" red lines
Yes through
the pinch valve.
No
Adjust the regulator,
then adjust the
drive air to the
manufacturer's
recommendation.
Adjust the line
pressure to 80 PSI
minimum.
Replace the
regulator.
PN: 3801-638
Is the tubing kinked?
Replace
tubing.
Will regulator Yes
adjust to 80 PSI?
No
Check the 1/4" red line
Yes from the USC box to
the control head
for kinks. Any found?
Repair
the kinks.
No
Is the drive air
adjustment
completely open?
foot control
Yes Check
tubing for kinks. No
Are any found?
Repair or
replace tubing.
No Is any air leaking when Yes
handpiece is running?
Check handpiece
for proper function.
Foot Control Is air leaking in foot Console
Replace foot control.
PN: 3801-706
Units
control or console?
Replace pilot valve.
PN: 3801-594
FAQ #24
Why is there moisture in air from compressor?
Lubricated Lubricated or Lube-Free
Lube-Free?
Membrane
Is auto
No drain timer
set at 1.5? Yes
Set timer to 1.5, empty tank and run
Yes compressor. Does burst of air come No
Press test button on auto drain.
No Does
burst of air come through Yes
through black line from auto drain
every 1.5 minutes of run time?
Replace coalescing
filter. PN: 64800214
Membrane dryer Desiccant
or desiccant dryer?
Monitor for several
cycles to make sure
purging every 1.5 min.
black line from auto drain?
Replace auto drain.
PN: JA4799500, 240V
PN: JA4799600, 120V
dryer shift
Yes Does
chambers every No
1:45 of run time?
Check pilot valve in
Has maintenance
Yes been performed No
in past 12 mos.?
Is it leaking air?
Replace pilot valve.
PN: JA4753200
timer rotating?
insulated?
Yes
Blow air from compressor
No
into tissue. Does the
tissue become saturated?
Replace dryer. Call
Dental EZ for part no.
Compressors
Perform
maintenance.
Call DentalEZ
for part no.
Yes Is lobe on cam- No
No Is line to operatory Yes
Insulate line. Blow
air lines out.
No radiator fan assembly. Yes
Replace cam-timer.
PN: JA4752500, 240V
PN: JA4752600, 120V
Compressor not putting
moisture in air lines.
FAQ #25
Why is the bulb not lighting? (17 VAC at Socket)
Yes Test Bulb with meter. No
Does it test good?
With bulb in place and
light
on high, take reading Yes
No
from prongs on bulb.
Is 17VAC present?
Replace bulb.
PN: 3801-797
Yes Take voltage reading across the No
red and black wire at the
transformer. Is 17 VAC present?
This indicates a
broken wire in the
arm. Replace wires.
Power Module Is power supplied Transformer
by power module
or transformer?
Yes Is 17 VAC present No
at power module?
Check wires and
connections to
power module.
Yes Is circuit breaker tripped No
on power module?
Reset circuit breaker.
Lights
Replace transformer.
PN: 3801-804
Replace transformer
in power module.
PN: 2718-031
FAQ #26
Why is there no output from the power module?
Yes Is unit master No
switch on?
No Is air present at actuator Yes
Turn master
switch on.
on the power module?
No Is there 115 vac supplied Yes
Find blockage or
kink in signal line.
to the power module?
Yes Is there voltage through No
Contact electrician to
provide 115 vac to
supply power module.
the air electric switch?
No Is 3 amp circuit Yes
Replace air
electric switch.
PN: 3800-453
breaker tripped?
Replace breaker.
PN: 3801-835
Is there 115 vac on the
No black wire from breaker Yes
to the transformer?
Take voltage reading across the
Yes orange
and yellow wires (pins 5 & 6) No
from the transformer. Is there 20V?
Take voltage reading
across the purple
Yes and gray wires
No
(pins 2 & 3) from
the transformer.
Is there 24V?
Making it to this
point means the
power module is
putting out the
proper voltage.
The problem is in
the unit's wires
or connections.
Units
Reset circuit
breaker.
Reset circuit
breaker. If it
trips again,
locate and
repair short.
Yes
Reset circuit
breaker.
No
Take voltage reading across the
black and white wires (pins 7 & 8)
from the transformer. Is there 15V?
Is 6 amp circuit Yes
No breaker tripped?
Yes Is .75 amp circuit No
breaker tripped?
Is 8 amp No
Yes circuit
breaker
tripped?
Reset circuit
breaker.
Is there continuity
No
across the
Yes circuit breaker?
Replace
transformer.
PN: 2718-031
Replace circuit breaker:
PN: 3801-909, .75 amp
OBL 3801-910, 6 amp
PN: 3801-911, 8 amp
FAQ #27
Why doesn't lube-free compressor build pressure?
Yes Air leakage No
heard?
Yes Is there suction No
on the intake?
Locate and
repair leak.
Yes Remove intake filter No
from head.
Is there suction?
Yes Is dryer No
shifting
chambers?
Check, clean and lube
non-return valve or
replace as needed.*
Yes
Pinch black line
to fan box. Does No
pressure build?
Does pressure No
build?
Yes
Perform
Maintenance.
Check pilot
valve and cam
timer. Replace
as needed.*
Take line from out
Yes going side of dryer. No
Is air coming
through dryer?
Replace
Dryer.*
Remove highpressure hose
from head. No
Yes
Does air
blow out?
Replace valve
plate or
complete head
depending
on model.*
* For part # information contact Tech Service at 1-866-DTE-INFO.
Compressors
FAQ #28
Why does the vacuum pump
shut down, cool then restart?
Yes Does pump have No
proper voltage?
Yes
No
Does pump have
sufficient water supply?
Yes Does pump have No
a recirculator?
Check line from
Yes the recirculator. No
Is it clogged?
Clear clog and make
sure recirculator cleaner
is used once a month.
Yes
Do lower
rebuild.*
Have plumber supply
proper water requirements.
Check water from flow
restrictor. Is there
Yes
No
sufficient water?
1 HP = 1/2 gal. per min.
2 HP = 1 gal. per min.
Clean or replace
flow restrictors.
PN: 64568192, 1 HP
PN: 64622010, 2 HP
Check shaft
Yes rotation. Is No
it smooth?
Check impeller housing
No
for wear or build up.
Is there wear or build up?
Have electrician
provide proper voltage.
Replace
motor.*
Replace pump. Problem
is in windings of motor.
* For part # information contact Tech Service at 1-866-DTE-INFO.
Vacuum Pumps
FAQ #29
Why is the compressor using oil? (700 Series)
Yes Does pump have No
proper voltage?
Yes
Is the ambient temperature above 90°?
Provide cooler air
around compressor.
No
Have electrician
provide proper voltage.
Yes Is the clear line to the No
intake filter kinked?
Fix
kink.
Yes
Use tubing to draw air
from a cooler location.
Is intake air being
No
drawn right at
the compressor?
Yes
Can you hear air
No
constantly exhausting?
Determine if it's the auto
drain, coelescing filter or
the unloader valve.
Compressors
Contact DentalEZ
Technical Support at
1-866-DTE-INFO
FAQ #30
Why is only one control working? (3-Function, w/2 Controls)
Yes Is LED #1 No
blinking?
Yes Are LEDs #1 No
back cushion, unplug
Yes Remove
left side switch panel & reset No
Does chair beep when Yes
control is activated?
& #3 blinking?
chair. Does LED #1 blink?
No
Check wires from
control for frays,
breaks or loose Yes
connections.
Are any found?
No
Replace left side
switch panel.
PN: 3801-895
Yes Plug in left side switch & unplug No
right side switch panel & reset
chair. Does LED #1 blink?
Unplug switch harness
Yes from board in back & No
reset chair. Does LED
#1 start blinking?
Take board from
back, plug it in by
Yes control board
and reset chair.
Does LED #?
start blinking?
No
Replace board.
PN: 3801-763
Replace harness.
PN: 3801-768
Replace right side
switch panel.
PN: 3801-894
Plug switches in one at a
time, reset chair each
time to determine which
switch is bad & replace.
J-Chair - left PN: 3801-895,
right PN: 3801-894;
V-Chair - left PN: 3801-914,
right PN: 3801-913;
JV Generation - PN: 3517-140
Unit
Is second control Foot Switch
on unit or a
foot switch?
One Is there one or two Two
touchpads on
the control head?
Replace control switch.
Foot switch, PN: 3625-548;
J/V Gen TP membrane, PN: 3801-986;
J-3, Right TP - PN: 3801-894,
Left TP - PN: 3801-895
Move foot switch to "M"
harness & reset chair. No
Does LED #1 blink?
Yes
Replace board in foot
control. PN: 3801-763
Unplug the membrane
in the control from the
No board and reset chair. Yes
Do LEDs #1 & 3
start blinking?
Unplug both switches
Yes from board in control No
head and reset chair.
Do LEDS start blinking?
Replace membrane switch.
Standard - PN: 3801-986;
New Euro - PN: 3802-137
Check harness to control
Yes for breaks or loose con- No
nections. Are any found?
Replace harness.*
Replace harness.
PN: 3801-768
Check "A" harness
to control board for No
loose connections
or broken wires.
Are any found?
Yes
Replace harness.
PN: 3801-768
Plug switches in individually,
reset chair each time to
determine which switch
is bad and replace.
Traditional unit, PN: 3801-986;
Euro style, PN: 3802-137
Replace control
board in control
head. PN: 3801-763
Was chair
manufactured No
prior to
July, 2003?
Yes
Replace control
board.
PN: 3801-765
Remove acorn nuts from
back side of control board, No
Yes reset 25 pin "D" connector
& reset char.
Do LEDs # start blinking?
Replace control
board. PN: 3801-765
Replace covers.
Have a nice day!
* For part # information contact Tech Service at 1-866-DTE-INFO.
Chairs
FAQ #31
Why does pump make squealing/whistling sound?
Yes Check Voltage No
Is it correct?
Yes Remove intake hose from pump. No
Does noise go away?
Inspect check
Yes
No
valve. Is it
working properly?
Manually rotate
Yes the pump shaft. No
Does the shaft
feel rough?
Replace pump
motor or pump
cartridge.*
Reconnect intake hose.
Then disconnect the hose No
to the vacuum relief valve.
Does noise go away?
Yes
Call Technical
Service.
Check or replace
vacuum relief valve.
PN: 64622001
Replace check valve.
3/4" - PN: 64568191
1" - PN: 64568193
Correct electrical
problems.
Yes Check water flow to
pump. Is it correct?
No
Correct water
flow problems.
* Contact Tech Service at 1-866-DTE-INFO.
Vacuum Pumps
FAQ #32
Why does water leak from the anti-siphon valve?
Single
Single or Dual
dual pump?
Yes Are both anti-siphon No
Yes Is pump No
running?
Turn pump off. Disconnect drain
Yes line and let exhaust into bucket.
Turn pump on. Does leaking stop?
No
Replace water solenoid valve.
24V- PN: 64568156
115V - PN: 64622084
220V - PN: 64622085
valves leaking?
No
Are pumps running? No
Is pump running?
Yes
Yes
Replace water solenoid valve.
24V- PN: 64568156
115V - PN: 64622084
220V - PN: 64622085
Check flow through flow
restrictors. Is it correct?
1 HP - 1/2 GPM
2 HP - 1 GPM
1 HP w/recir. - .13 GPM No
2 HP w/recir. - .25 GPM
No Turn pump/s off. Disconnect drain line and let exhaust
into bucket. Turn pump/s on. Does leaking stop?
Yes
Yes
Replace or rebuild
anti-siphon valve.
Rebuild kit - PN: 64568016
New Valve - PN: 64622011
Vacuum Pumps
Replace flow restritor.
1 HP - PN: 64568192
2 HP - PN: 64622010
1 HP w/recir. - PN: 64622018
2 HP w/recir. - PN: 64622019
Have plumber clear
obstruction in drain line.
FAQ #33
Why is air blowing out of holder
after manifold upgrade?
Traditional
Used kit #3658-385 Yes
to upgrade manifold?
No
Order correct
kit #3658-385.
Replace
holder
valve,
PN: 3802-014.
Traditional or Euro
Euro style unit?
Yes Used kit #3658-387
to upgrade manifold?
No
Is the white ribbed
tubing from the holder
Yes connected to the red No
tubing manifold from
the master on/off toggle?
Order correct
kit #3658-387.
Ensure the ribbed line is
connected to the red
tubing manifold off the
Yes
master toggle and the
smooth line is connected
to the barb on the manifold.
Is the valve still leaking?
No
Complete testing of the
unit and have a gread day.
Units
FAQ #34
Why does the chair beep after 45 seconds? (E-3000)
Yes
Replace potentiometer:
Base: PN: 3801-435
Back: Spiral bar style,
PN: 3801-430; Membrane
style, PN: 3801-819; Style
w/cable and reel or track
type, PN: 3801-546
Replace harness:
Chair with back switches PN: 3801-438;
Chair w/o back switches PN: 3801-570
Replace back potentiometer:
Spiral bar style, PN: 3801-430;
Membrane style, PN: 3801-819;
Style w/cable and reel or
track type, PN: 3801-546
Do an ohms reading across
pins 1 & 4 on the back
No potentiometer. Then read
across pins 1 & 3 on the base
potentiometer. Do both
readings read around 5K?
Yes
Do a continuity check on
the
harness from the control
No
board to the potentiometer.
Is there continuity?
Yes
Do an ohms reading across
terminals1 & 2 on the back
potentiometer and read Yes
No
across terminals 2 & 3.
Total the two readings. Does
the total equal the reading
across terminals 1 & 3?
Check connection on the base and
back potentiometer. Are they secure?
No
No
Secure the connections
on both potentiometers.
Does beeping stop?
Yes
Replace covers
& monitor chair.
Do an ohms reading
across terminals1 & 2
on the base potentiometer and read across No
terminals 2 & 3. Total
the two readings. Does
the total equal the reading
across terminals 1 & 3?
Yes
Replace base
potentiometer.
PN: 3801-435
Contact Technical Service for electronics
upgrade information. 1-866-DTE-INFO
Chairs
FAQ #35
Why is the touchpad not working? (E-3000)
all connections
Yes fromCheck
the control board to the No
touchpad. Are all secure?
No
Yes Does chair beep when touch- No
pad button is depressed?
Using meter, take a DC voltage
reading at the connection for the
Yes touchpad to the chair harness No
("M" or "A") on the green wire
and red wire. Do the voltages
match the chart below?
Check prongs on
interface board. Yes
Are any loose?
No
Replace the
interface
board.
PN: 3801-661
No
Secure connections from the Yes
control board to touchpad.
Reset chair. Does control work?
Secure any covers
removed and have
a nice day.
Using meter, take a DC voltage
reading across the green and
black wires at the connection Yes
to the chair harness ("M" or "A").
Does it read 5 VDC+/- .150?
Take voltage reading
across
corresponding
No
pins on the interface Yes
board. Does it read
5 VDC +/- .150?
Is touchpad
harness Yes
plugged on
"M" harness?
Replace
harness.
PN: 3801-570
No
Move "M"
harness to
JP104 on Yes
the control
board. Does
touchpad
work?
Replace the
interface
board.
PN: 3801-661
No
Move "M"
harness to
Yes JP104 on
the control
board. Does
touchpad
Replace
work?
harness.
No
PN: 3801-570
Yes Is the "M" harness
Replace the interface
board. PN: 3801-661
Chairs
Function
Auto #3
Auto #2
Auto #1
Base Down
Base Up
Back Down
Back Up
Any Two
Idle
Control Signal VDC
3.200 +/- .150
2.900 +/- .150
2.600 +/- .150
2.300 +/- .150
2.000 +/- .150
1.700 +/- .150
1.400 +/- .150
1.100 +/- .150
0.800 +/- .150
plugged into JP103?
No
Move the "M"
harness to JP103 Yes
No on the control
board. Does the
touchpad work?
If voltages are correct according to the
chart and reading across the green and
red wires, contact Technical Service for
upgrade information. (1-866-DTE-INFO)
Plug touchpad onto the
Yes "M" harness. Does the No
touchpad start working?
Replace
harness.
PN: 3801-570
Using meter, take a DC voltage
reading at the connection for the
touchpad to the chair harness No
("M" or "A") on the green wire
and red wire. Do the voltages
match the chart below?
Yes
Contact Technical Service
for upgrade information.
(1-866-DTE-INFO)
Using meter, take a
DC voltage reading
across the green
and black wires at Yes
the connection
to the chair harness
("M" or "A"). Does it
read 5 VDC+/- .150?
No
Replace the
touchpad.
PN: 3801-843
FAQ #36
How is a master water control solenoid valve
wired to a plug in transformer?
Main Water Control
Solenoid Valve
Plug In Transformer
24V
AC
2
1
3
24V
Coil
Coil
In
3
4
2
Water
Vacuum Pumps
FAQ #37
How is an old J-Chair model determined?
Yes
Does chair No
have any autos?
Yes Is back motor located No
5 Does chair have 5 or 6 6
in back of chair?
switches on the back?
Yes
Chair is a
JSR model.
Does chair have No
3 dials on the back?
Yes Does chair have No
Chair is a J or JS model.
NOTE: When getting a
back or seat motor,
ascertain whether the
screwtube is metal
or nylon.
Chair would be a
non-programable
JSA model.
2 separate plugs?
Chair would be a
programable
JSA model.
Chair is a J2 model
(thick back chair).
Chair would be
a JSAR model.
NOTE: If the chair has a split back
(upper back moves up and down),
the models would be V Series
(V1,VS,VSR,VSA or VSAR).
Chairs
FAQ #38
Why does the chair beep after installing
a new potentiometer? (E-3000/aXcs)
After 45 secs.
Does the chair start beeping Immediately
immediately or after 45 seconds?
Using a volt meter, take
Yes an ohms reading across pins No
1 & 3 on both potentiometers.
Is there 5k ohms?
Check the connections on the
protentiometers. Base has orange No
wire up and back should be to the
outside of the chair. Are they
both connected properly?
Replace the potentiometer:
Base - PN: 3801-435;
Back spiral bar type PN: 3801-430;
All others - PN: 3801-546
Connect the wires
properly and reset
the chair.
at JP7 and JP102.
Are the prongs loose?
Are the safety
switches activated?
Yes
Yes
Contact Technical
Service for electronic
upgrade information.
1-866-DTE-INFO
Does JP7 on control
board have connector Yes
with two brown wires
and a purple wire?
Replace interface
board. PN: 3801-661
Yes
No
Chairs
No
Check the prongs
No on the control board
Yes
Check all connections
for proper placement
and reset chair, then
reprogram soft limits.
Using a volt meter, do a
continuity check between
Yes the brown/black wire at JP7 No
and the gray wire at the
back potentiometer.
Is there continuity?
Does JP102 have a
connector with blue Yes
and yellow wires?
No
Remove the safety cover,
reset the safety switches
and determine the cause of
the safety cover activation.
Are either of the
No
safety limits activated?
Replace main harness.
PN: 3801-438 (E-3000
with back switches) or
PN: 3801-570
Place chair in programming
mode for soft limits and
reprogram the soft limits.
Correct connections,
reset chair and reprogram
soft limits if needed.
FAQ #39
Why won't the sensor work?
(Lumina® Light)
the sensor have No
Yes Does
a green light lit in the
adjustment hole?
If you wave your hand
over the sensor, does Yes
a yellow light flash in
the adjusment hole?
No
With the light in sensor mode,
if you unplug the sensor from
the sensor board then touch
release the two top pins
No and
on the board, does the light
go on and the sensor work?
Yes
Replace the sensor
board. PN: 3801-947
Lights
Replace the sensor.
PN: 3801-949
FAQ #40
Why does the hydraulic chair back fall overnight?
Place the chair back in
Yes its full upright position. No
Then unplug the chair
power overnight. Does
the back still fall?
Pull down on the
Yes chair back. Does No
oil leak into the
clear vent line?
Replace back
cylinder.*
Yes Are there any signs No
of oil leaking?
Fix/repair
leak/hose.
Measure voltages of touch
pad or foot control.
Correct Are the voltages correct
per the tech tip chart,
"Understanding Chair
Control Device"?
Not Correct
Call Tech
Service.*
Replace touch pad/
foot control/harness.*
*Call Tech Service for information & correct PNs. (1-866-DTE-INFO)
Chairs
FAQ #41
Why isn't the fiber optic bright enough?
Is bulb in Tubing
Swivel swivel
or
tubing?
Using voltmeter, check
Yes voltage
at fiber optic control. No
Using voltmeter, check
No voltage
at fiber optic control. Yes
Is voltage below 3.3 volts?
Is voltage below 5.5 volts?
Yes Does fiber optic control have No
Replace bulb.
PN: 262522
a rocker switch on its side?
Remove fiber optic contol cover.
Adjust blue potentiometer. No
Will voltage adjust to 3.3?
Use rocker switch No
Yes to adjust voltage.
Will it adjust to 3.3?
After adjusting
Yes voltage,
was light
bright enough?
No
Check other fiber
optic handpieces and
adjust as needed.
Secure cover.
Yes Does fiber optic control have No
Replace bulb.
PN: 260986
Replace fiber
optic control.
a rocker switch on its side?
Remove fiber optic contol cover.
Adjust blue potentiometer. Yes
Will voltage adjust to 5.5?
rocker switch
Yes Use
to adjust voltage. No
Will it adjust to 5.5?
No
Yes
Recalibrate fiber
optic control
No using instructions
2565-484.
Will control
calibrate?
Yes After adjusting No
voltage, was light
bright enough?
Recalibrate fiber
optic control
using instructions No
2565-484.
Will control
calibrate?
After adjusting Yes
voltage, was light
bright enough?
No
Yes
Replace fiber
optic control.
Replace bulb.
PN: 262522
Check other fiber
optic handpieces and
adjust as needed.
Secure cover.
Replace fiber
optic control.
Yes
Check other fiber
optic handpieces and
adjust as needed.
Secure cover.
Check other fiber
optic handpieces and
adjust as needed.
Secure cover.
Replace bulb.
PN: 262522
Replace bulb.
PN: 260986
Is light brighter
Yes after
calibrating No
Yes
Replace fiber
optic control.
Is light brighter after
No
calibrating to proper voltage?
to proper voltage?
Check other fiber
optic handpieces and
adjust as needed.
Secure cover.
Units
Replace bulb.
PN: 262522
Check other fiber
optic handpieces and
adjust as needed.
Secure cover.
Replace bulb.
PN: 260986
FAQ #42
Why is vacuum from dual pump weak?
Yes
Clean or replace the
in-line filter screen.
No Is the in-line Yes
filter clean?
Yes
Clean clogged
lines
and clean
Yes
out water
reciculator. Does
vacuum increase?
Are both
No
pumps running?
Are water lines
Yes from recirculator to No
intake lines clogged?
Clean or replace
the flow restrictors.
PN: 64622018 - 1 HP
PN: 64622019 - 2 HP
NOTE: If the recirculator
was field installed,
there may be 2 flow
restrictors on each Pump.
Vacuum Pumps
Is there a sufficient amount of
fresh water going into the pumps? No
1 HP = 1/2 gal. per min. per pump
2 HP = 1 gal. per min. per pump
Yes
No
Is the amount of fresh water
going into the pumps correct?
1 HP = .13 gal. per min. per pump
2 HP = .25 gal. per min. per pump
Clean or replace
the flow restrictors.
PN: 64622018 - 1 HP
PN: 64622019 - 2 HP
NOTE: If the recirculator
was field installed,
there will be 2 flow
restrictors on the unit.
Yes
Any blockages in Yes
the drain line?
No
Clean or replace
the check valve.
PN: 64568191 3/4" check valve
PN: 64568193 1" check valve
Does the dual
No
pump have a
water recirculator?
No
Remind office
staff the importance
of using recirculator
cleaner
(PN: 64568129)
once a month.
Remove the intake hose
No from the pump that is not Yes
running. Is there vacuum
present on that hose?
Clean or replace
the flow restrictors.
PN: 64568192 1 HP =1/2 gal. per min.
PN: 64622010 2 HP = 1 gal. per min.
Any restrictions No
in the exaust line?
Yes
Clean blockages/
clear restrictions.
Unhook the intake
line from the operatory
line and seal off the No
vacuum relief muffler.
Does vacuum increase?
Yes
Locate and repair leaks
in the operatory line.
Contact Technical
Service.
1-866-DTE-INFO
FAQ #43
How is a light pivot adjustment made?
Light Pivot Adjustment (Lumina®, Advantage by DentalEZ™ and
Simplicity by DentalEZ™)
To adjust the pivot of the Lumina or
Advantage light do the following:
Lumina or Advantage
Tool required:
• 5/64 Allen Wrench.
1. Squeeze on both sides of the
splash shield on the face of the
light and remove the shield.
2. Locate the two set screw holes
on each side of the light.
Set Screw Holes
3. Using a 5/64 Allen wrench,
adjust only one side at a time.
To adjust the pivot of the Simplicity
light do the following:
Simplicity
Tool required:
• 1.5 mm Allen Wrench
1. Locate the two set screws on the
outer yoke of the light.
2 Using a 1.5 mm Allen wrench
adjust only one side at a time.
Set Screw Holes
Lights
FAQ #44
How is a handpiece actuator valve
adjustment made? (Galaxy® Traditional Head)
Tools required:
• 1/16" Allen Wrench
• Small Needle-nose Pliers
White
Tubing
Perform the following steps for each
actuator valve that needs adjusting:
Set Screws
1. Flip the master switch to the OFF
position.
2. Determine which handpiece(s) need
adjusting, then remove the appropriate handpiece(s) from the holder(s).
3. Using a 1/16" Allen wrench, loosen, but don’t remove, the appropriate set screw inside
the brass inserts located on the bottom of the unit head.
4. Using small needle-nose pliers, gasp the white tubing for the appropriate handpiece and
move the acutator valve forward toward the face of the unit for better activation of the
plunger. (Adjusting the actuator valve too far forward will prevent the handpiece from sitting
correctly in the holder.)
5. Tighten the set screw to hold the actuator in place.
6. Flip the master switch to the ON position.
7. Place the handpiece back into the holder and press the foot control. (The handpiece
should not run while it is in the holder.)
8. Remove the handpiece from the holder and press the foot control. (The handpiece should
run when it is out of the holder.)
Units
FAQ #45
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