A-dec 500 User Manual 111-134
85.0816.00 Rev A 2004-11 (PCA 04002.12) Page 111
A-dec Service Guide, Vol. II Cuspidor
The support center and cuspidor are installed on the lower support arm. The support
side mounted water bottle, and the cuspidor circuit board are located inside the
support center.
This section provides information related to servicing, maintenance, and adjustments.
Detail on how to service the cuspidor and troubleshoot specific problems is presented.
For information on service parts, see the Genuine A-dec Service Parts Catalog or contact
A-dec customer service.
Page 112 85.0816.00 Rev A 2004-11 (PCA 04002.12)
Support Center Components A-dec Service Guide, Vol. II
How to Identify Support Center Components
The support center houses the cuspidor fill/rinse manifold, cuspidor circuit board, and support side water bottle.
Item #
Part Number
Description
1
77.0034.00
Cover, top
2
77.0036.00
Cover, right
3
77.0037.00
Cover, nose
4
77.0035.00
Cover, left
5
14.0456.00
Cover, water bottle
6
38.1803.00
Cuspidor manifold
7
001.089.00
Screw
8
90.1079.00
Cuspidor circuit board kit
9
77.0232.00
Rotational stop
10
14.0469.00 Bottle receptacle assembly
11
002.112.00 Screw
NOTE: Torque 13-17 inch lb
12
14.0468.00 Self-contained water bottle assembly
1
2
4
3
5
6
7
8
9
10
11
12
Figure 80. Identification of the support center components.
85.0816.00 Rev A 2004-11 (PCA 04002.12) Page 113
A-dec Service Guide, Vol. II Support Center Covers
Support Center Top Housing Cover Replacement
If replacement of the support center top housing cover is necessary, remove the support center top housing cover using these steps.
Cuspidor Removal
1. Remove side covers and water bottle cover.
2. Remove the two screws from under cuspidor support.
3. Disconnect the cup fill and bowl rinse tubings from the cuspidor fill/rinse manifold.
4. Disconnect the three wire connections from cuspidor circuit board
5. Remove the cuspidor by lifting it up and laying it on its side.
Top Housing Cover Removal
1. Remove the three screws from the top of cuspidor arm and lift off.
2. Remove the screw in the center of swivel and lift off the lower arm.
3. Remove the four screws holding the top cover on the housing, and lift off the top cover.
Top Housing Cover Replacement
Align two screws through lower arm and carefully thread into air trap bracket. Check seam alignment for bowl and arm, and tighten.
Page 114 85.0816.00 Rev A 2004-11 (PCA 04002.12)
Cuspidor and Support Center Flow Diagram
This flow diagram describes the plumbing and electrical connections of the cuspidor and support center.
Flow Diagram A-dec Service Guide, Vol. II
Cuspidor
Support
center
Without
a cuspidor
Chair air/water manifold
Chair 300-watt
power supply
Water regulator for cuspidor only
(floor box)
Bowl rinse,
city water
Cup fill, self
contained
water
Cuspidor
circuit
board
Data line
Po wer cable
To gravity
drain (floor box)
Air trap valve assembly
Cuspidor
fill/rinse
manifold
Cup fill
City water
85.0816.00 Rev A 2004-11 (PCA 04002.12) Page 115
A-dec Service Guide, Vol. II Cuspidor Circuit Board
How to Identify Cuspidor Circuit Board Components
(P/N 90.1079.00)
The cuspidor circuit board controls the bowl rinse and cup fill solenoids.
The LEDs on the circuit board indicate the status of the cuspidor and can
be used for troubleshooting. The circuit board is also equipped with a
built-in A-dec relay.The built-in relay functions exactly like the A-dec
relay module.
Relay outputs
Item # Description
1
P5 - DCS terminals
2
J1 - Ø VAC terminal strip
3
J2 - 24 VAC terminal strip
4
P4 - Cuspidor limit switch connector
5
P2 - Bowl rinse switch connector
6
P3 - Cup fill switch connector
7
P1 - A-dec relay selection header
8
DS5 - Bowl rinse relay LED
9
DS6 - Cup fill relay LED
10
DS4 - Auxiliary relay LED
11
DS1 - AC power LED
12
DS2 - Status LED
13
DS3 - Data LED
14
DS7 - Limit switch LED
Figure 81. Cuspidor circuit board components.
N.O.
COM
N.C.
1
2
3
10
14
4
5 6
9
8
11
12
13
7
Relay jumper
Page 116 85.0816.00 Rev A 2004-11 (PCA 04002.12)
Illustrated Parts A-dec Service Guide, Vol. II
How to Identify Cuspidor Components
Upper Assembly
The cuspidor is preset with an automatic timed cup fill and bowl rinse. Both the cup fill and the bowl rinse functions can be reprogrammed.
Item #
Part Number
Description
1
77.0043.01
Cup fill spout
2
77.0042.01
Bowl rinse spout
3
77.0044.00
Spout gasket
4
77.0099.00
Bowl rinse button
5
77.0100.00
Cup fill button
6
005.088.00
Screw
7
77.0038.00
Cuspidor bowl
8
75.0035.01
Bowl screen, pkg 5
9
004.005.02
Washer, pkg 10
10
023.811.00 Barb
11
023.805.01 Barb, pkg 10
12
43.0010.00 Bowl rinse and cup fill switch assemblies
13
006.009.00 Nut
14
004.132.00 Washer
15
004.035.00 Washer
1
3
4
6
9
10
11
12
5
2
14
15
8
7
13
Figure 82. Identification of the upper cuspidor components.
85.0816.00 Rev A 2004-11 (PCA 04002.12) Page 117
A-dec Service Guide, Vol. II Illustrated Parts
Lower Assembly
Item #
Part Number
Description
1
13.0403.00
Air trap valve assy
2
77.0236.00
Bracket, hold down
3
001.088.00
Screw
4
77.0108.00
Top housing
5
12.0991.00
Drain seal
6
002.082.03
Screw
7
004.141.00
Washer
8
013.061.01
Spring
9
77.0040.00
Cuspidor drain
10
022.090.00 Durr connector clip
11
035.053.01 O-ring, pkg 10
12
77.0109.00 Bottom housing
13
005.106.00 Screw
14
023.811.00 Restrictor barb
15
004.005.02 Washer, pkg 10
1
2
3
14
15
4
5
9
6
7
8
10
11
12
13
Figure 83. Identification of the lower cuspidor components.
Page 118 85.0816.00 Rev A 2004-11 (PCA 04002.12)
Illustrated Parts A-dec Service Guide, Vol. II
Cuspidor Fill/Rinse Manifold
(P/N 38.1803.00)
The cuspidor fill/rinse manifold assembly is mounted inside the support center.
Item #
Part Number
Description
1
041.660.00
Solenoid, 24 VAC
2
023.804.00
Barb, 5/16"
3
38.1794.00
Block, fill/rinse/mix
4
75.0222.00
Stem, flow adjustment
5
002.105.00
Screw, button head socket
6
004.005.02
Washer, pkg 10
7
021.016.04
Plug, hex head, pkg 10
2
3
6
7
5
4
1
4
Figure 84. Identification of the fill/rinse components.
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