Chicago Dryer EDGE - Unit Starts, then Shuts down

Troubleshooting Edge/Edge Blanket
6-12
WARNING
Only trained personnel with experience
in electrical or mechanical repair should
troubleshoot and repair the unit.
Troubleshooting
WARNING
Read the REPAIR chapter and make
sure that the power is disconnected
before doing any repairs.
ISSUE POSSIBLE CAUSE SOLUTION
Unit Does Not Start
Message reads:
CIRCUIT BREAKER TRIPPED
SERVICE OR CLEAR FAULT
INVERTER OR MOTOR OVER
-
LOAD
SERVICE OR CLEAR FAULT
(continued from previous page)
3. Inverter needs to be reset. Reset the inverter:
Turn the power OFF at the main
disconnect switch.
Wait one minute.
Turn power ON at the main discon-
nect switch.
If the fault repeats:
Input voltage is too high or low. The
voltage should be between 185v
and 245v.
There is a motor over current.
Check for excessive physical load
on the motor.
Open circuit between an inverter
and its motor.
An inverter-powered motor is bad.
There is an overbraking problem.
Contact the Chicago Dryer factory
Service Department.
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Unit Starts, Then Shuts Down
(continued on next page)
1. Control latching circuit
(hold) is defective.
Perform the following check:
Press a red safety STOP button or
open an interlock switch.
Press START and check for mes-
sage indicating open safety switch
location.
See if message stays displayed or
disappears after a few seconds.
If message disappears after a few
seconds:
Check wiring connections between
PB7 (start) and their associated con-
tacts, PSC1, MPC1, OC1 and CR1.
Check PSC1/MPC1 and OC1. Re-
place if necessary or consult factory.
Check CR1. Replace if necessary.
If message stays displayed:
Close all safety switches.
Press the START button and make
sure the momentary indicator does
not light at all, even for 1-2 seconds.
If indicator lamp lights for 1-2 sec-
onds while the machine is running,
see next cause.
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