User manual

B-2
While operating on backup power, generator’s breaker keeps tripping
Possible Cause: The ALM is disabled.
Solution: Enable the ALM.
Possible Cause: Ensure the generator and/or UPS is rated appropriately (reference System Configuration
in Appendix B of the Universal Transfer Switch Site Preparation and Installation Guide).
Solution: If the generator is not rated correctly, the ALM will not be able to prevent generator overloads.
Lower the power ratings as needed, and reduce the Overload Delay Time.
While operating on backup power, UPS keeps shutting off
Possible Cause: UPS is overloaded.
Solution: Check to ensure the UPS power is rated correctly, and check the Overload Delay Time.
Solution: Reduce the load on the UPS by changing the circuit settings.
Possible Cause: Low battery.
Solution: Recharge or replace the battery.
UPS remains on battery with the generator running
Possible Cause: UPS is not receiving power, or the VOLTAGE SENSITIVITY is set incorrectly.
Solution: Ensure the UPS is plugged into the convenience outlet located on the bottom of the UTS.
Solution: Check the UPS’s
VOLTAGE SENSITIVITY setting, it should be MEDIUM or LOW.
Circuit Fault (no power on a circuit)
Possible Cause: The circuit breaker for this circuit may be tripped, or may have the wrong rating.
Solution: Reset the breaker, or have an electrician upgrade the breaker rating, as required.
Possible Cause: If there is still no power, the fuse may have blown.
Solution: Contact an electrician to replace the fuse.
Loads on Circuit 1 cannot be powered by the UPS
Possible Cause: Circuit 1 is designed to only be powered by the Utility and Generator sources.
Solution: Circuit 1 supplies power to the convenience outlet, which the UPS plugs in to, and from which
the UPS derives its power.