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TS 870 TRANSFER SWITCH
PM062 REV 5 08/05/05 30 Thomson Technology
18. TROUBLESHOOTING
DANGER!!!!
Arc Flash and Shock Hazard. Will cause severe injury or death.
Do not open equipment until ALL power sources are disconnected
This equipment must be installed and serviced only by qualified electrical
personnel utilizing safe work practices and appropriate Personal Protective
Equipment (PPE). Failure to do so may cause personal injury or death
Note: An optional hand held, plug-in Service Display Module (SDM) is available for the TSC 80
Transfer Controller. The SDM module provides an LCD screen to display additional detailed
information on the operation and settings of the TSC 80 controller for simplified servicing/trouble
shooting procedures. For detailed information, refer to the separate SDM module instruction manual
(PM065).
Symptom Possible Causes
Will not re-transfer to utility source
upon restoration
-
Isolation plug out
-
Utility disconnect switch is in the de-energized position (Service
Entrance Rated ATS). Switch to the Energized position.
-
A test mode has been activated (check TSC 80 status LED)
-
Utility voltage is below the pre-programmed limits (check utility
source for adequate voltage)
-
A loose control connection
-
Faulty motor limit switch
-
Defective motor
-
TSC 80 has incorrect voltage configuration jumper setting for
correct system voltage
-
Defective TSC 80 controller (verify output signals with circuit
board mounted diagnostic LED’s)
-
TSC 80 has “Transfer Fail” alarm activated as indicated by
flashing Load on Utility LED. Determine cause of alarm and
rectify before TSC 80 is reset
Will not transfer to generator source
upon failure of utility source
-
Isolation plug out
-
Generator set not producing enough voltage/frequency or
output circuit breaker open
-
TSC 80 has incorrect voltage configuration jumper setting for
correct system voltage
-
Warm-up time delay function has not timed out yet (verify TSC
80 timer setting)
-
A loose control connection
-
Faulty motor limit switch
-
Defective motor