Floor Boxes and Power Supplies
Overview
This section provides information useful for servicing, adjusting, and maintaining floor boxes and
related assemblies. Additional information presented includes flow diagrams, exploded drawings
of the floor box components with service parts references, and troubleshooting detail.
85.0812.00, 2003
FB-1
Floor Boxes and Power Supplies
Floor Boxes
Stainless Steel Floor Box
Item #
Part Number
Description
30.0380.01
Cover, small stainless steel floor box
41.0407.00
Cover, medium stainless steel floor box
41.0413.00
Cover, large stainless steel floor box
41.0034.00
Frame with cover and mounting kit
41.0408.00
Frame with plugs
41.0414.00
Frame
3
041.582.00
Indicator light (beginning 8/98)
—
47.1260.00
Indicator light assembly (before 8/98)
1
2
1
3
*
QM5
1091 1/2W
IDI 12V
2
(Large stainless steel
floor box shown)
Stainless Steel Floor Box with Indicator Light
85.0812.00, 2003
FB-2
Floor Boxes and Power Supplies
Floor Boxes
Cascade Contoured Floor Box
Item #
Part number
Description
1
41.0416.00
Cover
2
41.0417.00
Frame
47.1256.00
Frame, International, dual hole
47.1260.00
Indicator light assembly
3
1
3
2
Cascade Contoured Floor Box with Indicator Light
85.0812.00, 2003
FB-3
Floor Boxes and Power Supplies
Floor Boxes
Flush-Mount Floor Box
Item #
Part Number
Description
1
41.1413.00
Cover with 2" umbilical connector
2
41.1179.00
Cover with 1-3/4" umbilical elbow
3
001.202.01
Screws pkg 8
4
006.122.01
Retainer nut pkg 8
5
41.1173.00
Flush-mount box
1
2
3
4
5
Cascade Contoured Floor Box with
1-3/4" and 2" Umbilical Elbow Assembly
85.0812.00, 2003
FB-4
Floor Boxes and Power Supplies
Plumbing Diagram
After November 1999
3
Air manual
shut-off valve
40
2
4
50
60
5
30
70
20
1
NOTE:
80
90
10
0
0
6
100
psi
2
kg/cm 7
Air filter/regulator assembly (white body)
(80 psi)
Post box or foot control
Floor box
Post box or control head
(to master On/Off toggle)
80 psi air regulator (replace as a complete assembly)
NOTE:
This line is only connected with
the Radius system.
This line is only connected if
the Radius cuspidor or
Asst’s is installed, w/out the
Radius delivery system.
Water manual
shut-off valve
(80 psi)
Water filter/regulator
assembly (black body)
(80 psi)
(40 psi)
Floor box
Radius only —
delivery system
Radius only — cuspidor and
Assistant’s syringe
Post box
(40 psi)
3
40
2
4
50
60
5
30
70
20
1
80
90
10
0
0
100
psi
2
kg/cm 7
6
40 psi regulator
(pre-set, replace
as a complete
assembly)
Water pre-regulator.
Must be set at
40 psi
(replace as a
complete assembly)
85.0812.00, 2003
(40 psi)
Self-contained water/ cuspidor
(Cascade and Radius)
Miscellaneous —
for accessories
Vacuum and/or gravity drain
(Cascade and Radius)
FB-5
Floor Boxes and Power Supplies
Plumbing Diagram
Before December 1999
Air manual
shut-off valve
Air filter/regulator
assembly
(white body)
2
3
40
4
50
60
5
30
70
20
1
80
6
90
10
100
psi
0
kg/cm 7
2
0
Moisture separator
Floor box
Post box or control head
(to master On/Off toggle)
Post box or foot control
80 psi air regulator
(replace complete
assembly)
Water manual
shut-off valve
Water filter/regulator
assembly
(black body)
3
40
2
60
(pre-set, replace complete
assembly)
5
70
80
90
10
0
0
Post box or control head
(from master On/Off toggle)
4
50
30
20
1
(80 psi)
6
100
psi
2
kg/cm 7
Floor box
Post box
(40 psi)
(40 psi)
Self-contained water and
cuspidor (if included)
Water heater
Post box and control head
Miscellaneous
Circulating
syringe
drip line
Vacuum drain
(Cascade and Radius)
Electrical outlet
85.0812.00, 2003
FB-6
Floor Boxes and Power Supplies
Regulators
Air Filter/Regulator Assembly
Item #
Part number
Description
1
24.0229.00
Filter housing
2
030.019.03
O-ring pkg 10
3
24.0234.01
Filter element pkg 6
4
026.118.00
Panel mount gauge kit (0-100 psi)
5
24.0182.02
Pre-regulator, 80 psi, relieving
6
24.0137.01
9-hole gasket pkg 10
7
24.0135.00
Air filter/regulator body, White
8
22.0460.00
Spring, conical
9
030.003.02
O-ring pkg 10
10
24.0132.00
Piston with o-ring
11
22.0440.02
1
2
3
4
5
6
7
8
9
Diaphragm pkg 10
10
NOTE:
11
To increase air pressure, turn the pre-regulator knob clockwise
while reading the air pressure gauge. To decrease, turn the knob
counterclockwise. See Adjusting Regulators for more details.
Air Filter/ Regulator Assembly
85.0812.00, 2003
FB-7
Floor Boxes and Power Supplies
Regulators
Water Filter/Regulator Assembly
Item #
Part number
Description
1
24.0229.00
Filter housing
2
030.019.03
O-ring pkg 10
3
24.0234.01
Filter element pkg 6
4
026.118.00
Panel mount gauge kit, 0—100 psi
5
24.0388.02
Regulator, 40 psi, relieving
6
24.0182.02
Pre-regulator, 80 psi, relieving
7
24.0137.01
Gasket, 9-hole, pkg 10
8
24.0355.00
Water filter/regulator body (black)
9
013.032.00
Spring, conical
10
24.0132.00
Piston with o-ring
11
030.003.02
O-ring pkg 10
12
22.0440.02
Diaphragm pkg 10
Before 12/99
1
2
3
4
5
6
7
Must be set
to 40 psi
8
9
Before 12/99
10
11
12
NOTE:
To increase water pressure, turn the pre-regulator knob clockwise
while reading the water pressure gauge. To decrease, turn the knob
counterclockwise. See Adjusting Regulators for more details.
Water Filter/ Regulator Assembly
85.0812.00, 2003
FB-8
Floor Boxes and Power Supplies
Adjusting
Regulators
Adjustments
The air and water pre-regulators are located in the floor box. Before making adjustments, verify that the
air compressor is ON, and that it maintains 125 psi.
If the air pressure is lower than 80 psi, refer to the compressor instructions. Some compressors, especially
older ones, produce a maximum of 60-80 psi. Adjustments on this type of compressor should be done
when air pressure is near or reaches maximum psi. A-dec systems will usually function in this pressure
range, although at a reduced performance.
Task
Description
1
Be sure manual shutoff valves are fully open (turned counterclockwise).
2
Turn the system ON and check pressures.
•
Air pressure should be 70 - 80 psi.
•
Water pressure should be 35 - 40 psi.
3
Operate the syringe.
4
Watch the gauges for a drop in pressure. In units manufactured before December 1999, replace the
filters if:
5
•
Air pressure drops by more than 15 psi.
•
Water pressure drops by more than 10 psi.
Adjust the air or water pressure as required by turning the pre-regulator knob:
•
Clockwise to increase pressure.
•
Counterclockwise to decrease pressure.
NOTE:
85.0812.00, 2003
The gauge will not indicate a change in pressure when decreasing system air or water pressure,
until pressure from the system is relieved. Activate the syringe for a few seconds and check the
gauge. Repeat this process each time a decrease adjustment is made.
FB-9
Floor Boxes and Power Supplies
Moisture Separators
Manual Moisture Separator
Item #
Part number
Description
1
030.023.02
O-ring pkg 10
2
97.0280.02
Filter element pkg 6
3
97.0290.00
Bowl assembly
4
026.033.01
Valve core, short pkg 10
5
023.066.00
Barb, 1/8"
6
035.026.01
O-ring special pkg 10
1
2
3
4
5
6
Manual Moisture Separator
85.0812.00, 2003
FB-10
Floor Boxes and Power Supplies
Moisture Separators
Automatic Moisture Separator
Item #
Description
97.0290.00
Bowl assembly with seal
R
1
Part number
1
90.1027.03
85.0812.00, 2003
Automatic Moisture Separator
FB-11
Floor Boxes and Power Supplies
Troubleshooting
Floor Boxes
Troubleshooting information for floor boxes is listed in the following charts.
Action
Problem
Unit air pressure drops when
unit is in use
Troubleshooting
Check for a plugged filter element in air filter/regulator following these steps:
CAUTION
When replacing a filter element, be sure to install the new
filter with the beveled side towards the manifold. The unit
may not work properly if the filter is installed incorrectly.
Task
Description
1
Flip the master On/Off toggle to the ON position and remove the floor box cover.
2
Locate and observe the air pressure gauge in the
floor box and press the syringe air button. If the
air pressure drops by more than 15 psi, the air filter
is clogged.
3
Housing
Inspect the element.
30
3
40
50
4
60
80
70
7
90
6
5
85.0812.00, 2003
Replace the element (beveled edge of filter faces
the manifold).
(Beveled edge)
2
100
psi
4
20
Remove the filter element and discard it.
kg/cm2
•
0
Remove the air regulator filter housing from
the regulator assembly.
10
•
0
With the master On/Off toggle in the OFF
position, close the air manual shutoff valve.
Bleed the system of air and water pressure.
1
•
Filter
Replacing the Filter Element
FB-12
Floor Boxes and Power Supplies
Action
Problem
Low unit water pressure
Troubleshooting
Check for a plugged filter element in the water filter/regulator assembly, or a plugged water filter
screen in the manual shutoff valve (used before November 1999).
Task
Description
1
Flip the master On/Off toggle to the ON position and then remove the floor box cover.
2
Locate and observe the water pressure gauge in the floor box and press the syringe water button.
If the water pressure gauge drops by more than 10 psi, the water filter element and/or the water
filter screens are clogged and must be replaced.
3
Replace the water filter element.
1
0
2
30
20
3
40
50
Filter screen
4
60
80
70
6
5
Inspect the water filter screen.
7
Replace filter and reinstall the filter housing.
90
•
100
psi
Remove the water regulator filter housing.
kg/cm2
85.0812.00, 2003
•
0
5
With the master On/Off toggle in the OFF
position, close the water manual shutoff
valve. Bleed the system of air and water
pressure.
10
4
•
Compression nut
•
With the master On/Off toggle in the OFF
position, close the manual shutoff valves.
Bleed the system of air and water pressure.
•
Loosen the compression nut and remove the water filter regulator assembly.
•
Remove the filter screen and discard it.
•
Reinstall the water filter regulator assembly and tighten the compression nut.
Replacing the Water Filter Screen
Open the water manual shutoff valve and flip the master On/Off toggle to the ON position.
Check the fitting for leaks.
FB-13
Floor Boxes and Power Supplies
Replacing 300-Watt Power Supplies
Item #
Part number
Description
1
28.1434.00
100 VAC
2
28.1435.00
28.1436.00
110-120 VAC
220-240 VAC
NOTE:
Power Supplies
This section provides information to assist in troubleshooting, replacing and
making adjustments to A-dec power supplies. Flow diagrams illustrate how
to connect power supplies to the unit after testing or replacement. These
diagrams cover all of the A-dec power supplies, except the 80-watt power
supply, which is covered in the Performer (PR) section.
There are no serviceable parts on A-dec power supplies. Replacement of the
complete assembly is required.
1
10
A
M
P
10
A
M
P
May 1998 — May 1999
85.0812.00, 2003
After May 1999
FB-14
Floor Boxes and Power Supplies
Power Supplies
300-Watt Power Supply Cable
Item #
Description
1
Auxiliary cable (4 pin, Black connector)
2
Handpiece control cable (6-pin, Black connector)
3
Dental light cable (6-pin, Red connector)
4
Indicator light cable (6-pin, White connector)
1
2
3
10
A
M
P
10
A
M
P
4
Cable Connections to the 300-Watt Power Supply
85.0812.00, 2003
FB-15
Floor Boxes and Power Supplies
300-Watt Connector/Pin Locations
Pin
Voltage
Wire
1
0 VAC
Black/White
(switched)
4
6 VAC
Red
3
24 VAC
Gray
Wire side
(power supply)
2 1
4 3
3 2 1
6 5 4
10
10
A
M
P
A
M
P
24
v~
3 2 1
6 5 4
3 2 1
6 5 4
Front view
(test voltages)
Black 4-Pin Connector
(Auxiliary Cable)
0
Connector/Pin Locations on
the 300-Watt Power Supply
85.0812.00, 2003
Power Supplies
Pin
Voltage
Wire
1
Ground
Green/Yellow
2
0 VAC
Black/White
3
0 VAC
Black/White
4
6 VAC
Red
5
17 VAC
Violet
6
24 VAC
Gray
Front view
(test voltages)
Wire side
(power supply)
Black 6-Pin Connector
(Handpiece Control)
FB-16
Floor Boxes and Power Supplies
2 1
4 3
300-Watt Connector/Pin Locations
24
v~
10
10
A
M
P
A
M
P
3 2 1
6 5 4
3 2 1
6 5 4
3 2 1
6 5 4
0
Connector/Pin Locations on
the 300-Watt Power Supply
85.0812.00, 2003
Pin
Voltage
Wire
1
Ground
Green/Yellow
2
0 VAC
Black/White
3
15 VAC
Green
4
16 VAC
Blue
5
17 VAC
Violet
6
10.8/12.1 VAC
White
Pin
Voltage
Wire
1
Ground
Green/Yellow
2
0 VAC
Black
3
10.8/12.1 VAC
White
4
10.8 VAC
Orange
5
12.1 VAC
Yellow
6
12.1 VAC
Yellow
Power Supplies
Front view
(test voltages)
Wire side
(power supply)
Red 6-Pin Connector
(Dental Light)
Front view
(test voltages)
Wire side
(power supply)
White 6-Pin Connector
(Indicator Light)
FB-17
Floor Boxes and Power Supplies
Flow Diagram
120 Volt Before May 1998
300-Watt Power Supply
Transformer
Secondary wiring
Fuse Slot
Part Number
Description
F1/F3
044.164.00
12A, 250V, fast blow
F2/F4
044.167.00
3.2A, 250V, time delay
F5
NA
Optional fuse
F7/F8
044.166.00
5A, 250V, fast blow
F6
046.100.00
5A, 250V, time delay
F9/F10
044.165.00
10A, 32V, time delay
0 Volts
15 Volts
16 Volts
17 Volts
Ground
To light
Primary
wiring
From master
On/Off toggle
Air-electric switch
(044.170.00, replace as a
complete assembly)
BLK
BRN
RED
WHI
0 Volts
6 Volts
To A-dec accessories
Ground
17 Volts
To control head
85.0812.00, 2003
0 Volts
0 Volts
6 Volts
24 Volts
24 Volts
Ground
24 Volts
17 Volts
Printed circuit board
From electrical outlet
FB-18
Floor Boxes and Power Supplies
Flow Diagram
240 Volt Before May 1998
300-Watt Power Supply
Transformer
Secondary wiring
Primary wiring
From master
On/Off toggle
Indicator light
Fuse Slot
Part Number
Description
F1/F3
F2/F4
044.166.00
044.168.00
5A, 250V, fast blow
1.6A, 250V, time delay
F5
NA
Optional fuse
F7/F8
044.166.00
5A, 250V, fast blow
F6
046.100.00
5A, 250V, time delay
F9/F10
044.165.00
10A, 32V, time delay
To light
To A-dec
accessories
To control head
85.0812.00, 2003
Air-electric switches
(044.170.00, replace as
a complete assembly)
0 Volts
15 Volts
16 Volts
17 Volts
Ground
0 Volts
6 Volts
Ground
24 Volts
17 Volts
0 Volts
0 Volts
6 Volts
24 Volts
24 Volts
Ground
24 Volts
17 Volts
Printed circuit board
From electrical outlet
FB-19
Floor Boxes and Power Supplies
Flow Diagram
300-Watt Power Supply
NOTE:
NOTE:
F6 fuse (violet wire) position is different compared to
later versions of circuit boards.
F6 Fuse (violet wire) variations before May 1998
Transformer (thermal limiter on
120V versions only)
Transformer (thermal limiter on
120V versions only)
Indicator Light
(for 240 versions only)
Indicator light
(for 240 versions only)
To control head
85.0812.00, 2003
5A, 250V
time delay
F9/F10
044.165.00
10A, 32V,
time delay
0 Volts
0 Volts
6 Volts
24 Volts
24 Volts
Ground
24 Volts
17 Volts
To control
head
0 Volts
6 Volts
Ground
24 Volts
24 Volts
0 Volts
0 Volts
0 Volts
24 Volts
24 Volts
Ground
24 Volts
17 Volts
T3
Printed Circuit Board
0 Volts
15 Volts
16 Volts
17 Volts
Ground
RETURNS
BRN
RED
INLINE
HEATER
ORA
FIBER
OPTIC
YEL
SCALER
GRN
CHASSIS
BLU
WATER
HEATER
CURING
LIGHT
VIO
T4
To light
CONTROL
HEAD
BLK
VIO
046.100.00
FIBER OPTIC
F6
BLU
5A, 250V,
fast blow
DENTAL
LIGHT
BLK
RETURN
BRN
15V
RED
16V
WHI
17V
CURING LIGHT
To A-dec
accessories
044.166.00
F6
To light
0 Volts
15 Volts
16 Volts
17 Volts
Ground
F6/F8
F5
10A, 32V,
time delay
Optional fuse
GRN
044.165.00
NA
YEL
F9/F10
F5
INLINE HEATER
5A FAST BLOW
5A, 250V
time delay
Description
SCALER
5A FAST BLOW
046.100.00
Part #
ORA
F6
Fuse Slot
F8
5A, 250V,
fast blow
F7
044.166.00
RED
F7/F8
BRN
Optional fuse
BLK
NA
F10
F5
DENTAL LIGHT
10A TIME DELAY
Description
F9
Part #
WATER HEATER
10A TIME DELAY
Fuse Slot
ADEC 41-1100-00 REV —
Printed circuit board
FB-20
Floor Boxes and Power Supplies
Replacing 150-Watt
Power Supplies
NOTE:
Power Supplies
The 150-watt power supply was used on equipment built before June 1998. It is no
longer available for replacement. To convert from a 150-watt power supply to the
new 300-watt order, an adapter kit P/N 90.1012.00 and the appropriate 300-watt
power supply.
These combinations are acceptable since not all
accessories are used at the same time.
Before June 1998
Acceptable Accessory Combinations that Exceed 150-Watts
Fiber Optic Scaler
(10W)
(60W)
X
X
X
X
X
X
X
85.0812.00, 2003
Dental Light
(95W)
One Low Voltage Water Heater
(90W)
Curing Light
(120W)
X
Electric Handpiece
(80W)
X
X
X
X
FB-21
Floor Boxes and Power Supplies
Flow Diagram
120 Volt Before June 1998
150-Watt Power Supply
Accessory wiring
Transformer
Primary wiring
Secondary wiring
To accessories
To control head
From electrical
outlet
0 Volts
15 Volts
16 Volts
17 Volts
Ground
Printed
Circuit
Board
To light
From master
On/Off toggle
Air-electric switch (044.170.00,
replace as a complete assembly)
Control Head and Accessory
Wiring AC Voltages
Color
85.0812.00, 2003
Rev B
PC Board
To control head
Rev A
PC Board
Black
0 Volts
Same
Brown
0 Volts
Same
Red
6 Volts
Same
Orange
24 Volts
Same
Yellow
24 Volts
Same
Ground
0 Volts
Same
Blue
24 Volts
Same
Violet
17 Volts
24 Volts
FB-22
Floor Boxes and Power Supplies
Flow Diagram
240 Volt Before June 1998
150-Watt Power Supply
Indicator light
Accessory wiring
Transformer
Primary wiring
Secondary wiring
To
accessories
To control head
Printed
circuit
board
From master
On/Off
toggle
Color
Air electric switch (044.170.00,
replace as a complete assembly)
85.0812.00, 2003
To light
To control
head
From master
On/Off toggle
NOTE:
0 Volts
15 Volts
16 Volts
17 Volts
Ground
Refer to the Acceptable Accessory Combinations that exceed 150-watts
chart in Replacing 150-Watt Power Supplies.
Control Head and Accessory
Wiring AC Voltages
Rev B
PC Board
Rev A
PC Board
Black
0 Volts
Same
Brown
0 Volts
Same
Red
6 Volts
Same
Orange
24 Volts
Same
Yellow
24 Volts
Same
Ground
0 Volts
Same
Blue
24 Volts
Same
Violet
17 Volts
24 Volts
FB-23
Floor Boxes and Power Supplies
Flow Diagram
120 Volt
After May 1998
100-Watt Power Supply
From electrical outlet
Primary wiring
0 Volts
15 Volts
16 Volts
17 Volts
Ground
To light
Printed circuit board
14 L
15 M
16 H
Secondary wiring
Transformer
Fuse Position Options
0 volt - 15, 16, 17 VAC
1 volt - 14, 15, 16 VAC
85.0812.00, 2003
FB-24
Floor Boxes and Power Supplies
Flow Diagram
240 Volt
After May 1998
100-Watt Power Supply
From electrical outlet
To light
0 Volts
15 Volts
16 Volts
17 Volts
Ground
Printed circuit board
Primary wiring
Transformer
Fuse Position Options
Secondary wiring
0 volt - 15, 16, 17 VAC
1 volt - 14, 15, 16 VAC
85.0812.00, 2003
FB-25
Floor Boxes and Power Supplies
Power Supplies
100, 120, and 240 Volt
Identifying 25-Watt
Connector/Pin Locations
White 6-pin Connector
(Indicator Light)
Indicator
light cable
Pin
White
6-pin
Voltage
Wire
1
Black
6-pin
2
0 VAC
Black
12.1 VAC
Gray
3
Control
head
4
5
25-Watt Power Supply Cables and Connectors
6
Black 6-pin Connector
100 and 110-120 VAC Power Supply
Plumbing
(Delivery System)
220-240 VAC Power Supply Plumbing
Pin
Voltage
1
2
Wire
Ground green/yellow
0 VAC
Black
24 VAC
Yellow
3
4
5
6
85.0812.00, 2003
FB-26
Floor Boxes and Power Supplies
60-Watt Power Supply
17-Watt Power Supply
22 Volts
return ground
From master
On/Off toggle
Power Supply Flow Diagrams
To A-dec intra-oral
light source
(Not used)
240 volt
wiring
Air-electric
switch
(044.181.00,
replace as a
complete
assembly)
To A-dec
accessories
24 Volts
return ground
Transformer
120 volt
wiring
Indicator light
(for 240 version only)
Transformer
(Not used)
Fuse holder
(order fuse
P/N 046.070.00)
From
electrical
outlet
Transformer
From
electrical
outlet
85.0812.00, 2003
Air-electric switch
(044.181.00, replace as a
complete assembly)
From
master
On/Off
toggle
FB-27
Floor Boxes and Power Supplies
Troubleshooting
Power Supplies
Problem
Power supply is not working
Troubleshooting information for power supplies is listed in the following charts.
Action
Follow these steps to determine the problem with the power supply.
Task
1
2
Description
Plug in power supply and check for:
•
An indicator light that is ON, if present.
•
Working accessories.
•
Proper input line voltage (100 VAC, 110-120 VAC or 220-240 VAC).
Measure output voltages.
•
If all are correct, check for loose connections.
•
If some are correct, check circuit breakers.
3
Check for a tripped circuit breaker.
4
Reset the circuit breaker.
NOTE:
85.0812.00, 2003
Troubleshooting
If the power supply is receiving line voltage and the output voltages are all 0 VAC, then an
internal protector in the transformer has been tripped. Replace the entire power supply.
5
Check pilot air tubing (at the air-electric switch) air pressure. It should have a minimum of 60
psi. If not check for kinks, pinches or leakage. Replace any damaged tubing.
6
Check that the air-electric switch works properly by listening for a clicking sound. If it isn't, the
power supply has failed. Replace the power supply.
7
Check for a failed power supply by removing the cover and visually inspecting the power
supply for any visible damage (burnt wires, broken terminal strips or burn spots).
8
Replace the power supply.
FB-28
Floor Boxes and Power Supplies
Action
Problem
Some electrical accessories are
not working
Troubleshooting
Follow these steps to check fuses for continuity and the range of AC power on the electrical outlet.
Task
1
Description
Check for blown fuses:
•
Unplug the power supply and remove the cover.
•
Locate the appropriate accessory fuse, remove it and test for continuity.
•
Replace any blown fuses.
2
Replace the power supply cover and plug in the power cord. Test the accessories
that weren't functioning to ensure the problem has been fixed.
3
Check for normal AC power at the electrical outlet.
•
If the AC power is within the correct range, the power supply has failed. Replace the
power supply.
•
If the AC power is not within the correct range, have a certified electrician correct
the problem.
Nominal Mains AC Voltage Ranges
Voltage
Range
85.0812.00, 2003
100
90-110 Volts
120
108-132 Volts
220
198-242 Volts
240
216-264 Volts
FB-29
Floor Boxes and Power Supplies
Problem
None of the electrical accessories
are working
Troubleshooting
Action
Follow these steps to determine the problem when none of the electrical accessories work.
Task
1
Description
Check for power at the electrical outlet. If not check the following points.
•
Wall switches that may be turned off, or where appropriate, circuit breakers that may
have tripped.
•
Normal AC power at the electrical outlet (see chart). If the AC power is within the correct
range, the power supply has failed. Replace the power supply. If the AC power is not
within the correct range, have a certified electrician correct the problem.
Nominal Mains AC Voltage Ranges
Voltage
2
85.0812.00, 2003
Range
100
90-110 Volts
110
99-121 Volts
120
108-132 Volts
220
198-242 Volts
240
216-264 Volts
Check for blown fuses:
•
Unplug the power supply and remove the cover.
•
Locate the appropriate accessory fuse, remove it and test for continuity.
•
Replace any blown fuses.
3
Replace the power supply cover and plug in the power cord. Test the accessories that weren't
functioning to ensure the problem has been fixed.
4
Check for a failed power supply by removing the cover and visually inspecting the power
supply for any visible damage (burnt wires, broken terminal strips or burn spots). Replace the
failed power supply.
FB-30
Floor Boxes and Power Supplies
Action
Problem
None of the electrical accessories
are working
Troubleshooting
5
Check pilot air tubing (at the air-electric switch) air pressure. It should have a minimum of 60
psi. If not, check for kinks, pinches or damage. Replace any damaged tubing.
6
Check that the air-electric switch works properly by listening for a clicking sound.
•
If it isn't, replace the air-electric switch (below) by removing the power supply cover and
air switch coupling. Disconnect the failed switch and install a new one. Reinstall the
coupling and power supply cover
Air-electric switch
Air-electric switch
Coupling
Air-electric switch
Coupling
17-Watt Air-Electric Switch
150-Watt Air-Electric Switch
Coupling
300-Watt Air-Electric Switch
Replacing the Air-Electric Switch
•
7
85.0812.00, 2003
If the air-electric switch is working, visually inspect the power supply by removing the
cover and look for any visible damage (burnt wires, broken terminal strips or burn
spots.) Replace failed power supply.
Test voltages at the transformer secondary terminal strip.
•
Plug in the power supply and remove the cover.
•
Test for AC voltage at each wire contact on the transformer secondary terminal strip (use
only the probes of a volt-ohm meter). The specified voltage for each position is either
labeled on or below the terminal strip. The AC voltages for red, green and, violet wires
should be within 1.5 volts of the specified voltage. The AC voltages for orange, yellow,
and blue wires should be within 2.5 volts of the specified voltage.
FB-31
Floor Boxes and Power Supplies
85.0812.00, 2003
Notes
FB-32