Cd Models: No Start With Vend Satisfied And Start Button Pressed In - ALLIANCE AT050L Service Manual

Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the tumbler before servicing.
• Close gas shut-off valve to gas tumbler before servicing.
• Close steam valve to steam tumbler before servicing.
• Never start the tumbler with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.

27. CD MODELS: NO START WITH VEND SATISFIED AND START BUTTON PRESSED IN

NOTE: All voltage checks are referenced to neutral unless stated otherwise.
Step Problem
1 Is there voltage to NC terminal of switch A?
If yes, continue to next step.
2 Is there voltage to the COM terminal of switch A?
If yes, continue to next step.
3 Is there voltage to H1-2 at time delay board? If yes,
continue to next step.
4 Is there voltage to H1-3 at time delay board? If yes,
continue to next step.
5 Is there voltage to the common terminal of the door switch?
If yes, continue to next step.
6 With the door closed, is there voltage to the N.O. terminal
of the door switch? If yes, continue to next step.
7 Is there voltage at COM of lint panel switch? If yes,
continue to next step.
8 Is there voltage to NO of lint panel switch? If yes, continue
to next step.
9 Is there voltage to the input side of the Push-To-Start
button? If yes, continue to next step.
10 Is there voltage at output of push-to-start switch? If yes,
continue to next step.
11 Is there voltage to the input side of the auxiliary contacts on
the motor contactor? If yes, continue to next step.
12 Is there voltage across the coil of the motor control
contactor?
13 If the start button is released, does the motor contactor stay
in the made position? If yes, continue to next step.
14 Is there voltage to motor contactor? If yes, continue to next
step.
15 Is there voltage out of the motor contactor? If yes, continue
to next step.
16 Is there voltage to the motor? If yes, continue to next step. Correct wiring between motor contactor and motor.
17 Is the internal wiring of the motor correct for the supply
voltage?
18 Thermal overload cycled, allow motor to cool and recheck. Replace motor.
19 Unit operational.
28
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WARNING
If No, then
Correct wiring between L1 and switch A.
Check for proper operation of switch A. Replace switch
A if necessary.
Correct wiring between switch A and H1-2 at time delay
board.
Replace time delay board.
Correct wiring between door switch and switch A.
Check door switch for proper operation, replace if
necessary.
Correct wiring between door switch and lint panel switch.
Adjust switch as needed.
Correct wiring between start switch and lint panel switch.
Replace switch.
Correct wiring between motor contactor and lint panel
switch.
Correct wiring between motor contactor and Push-To-
Start button.
Check for proper operation of motor contactor and fan
motor centrifugal switch, replace if necessary.
Correct wiring between motor contactor and supply.
Check for proper operation. Replace motor contactor if
necessary.
Change the wiring accordingly.
W002
70269301