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Should you encounter a problem in the operation of a
UPS module and need MGE UPS Systems, Inc. to
service your product, please take into account the
following recommendations.
To the extent that you feel comfortable with the unit, leave it in its current state, make a record
of the display lights and alarm messages and call either your local MGE Field Engineer or
MGE’s Customer Support Services at 1-800-438-7373 for assistance. Leaving the unit in its
current state will enable MGE’s field engineers to troubleshoot your product and bring it back
on line more easily.
If you are not comfortable with the current status of the unit, you may want to take the
following actions (listed by order of increasing impact on ease of troubleshooting):
1. If the audible alarm is active, reset it by pressing the audible alarm reset button
(the second button from the left on the lower hidden panel as shown in Figure 2-8).
2. Stop the inverter (see Section 2.4.4.2 for normal shutdown and Section 2.4.6.3 for
forced shut down).
3. Open the isolation circuit breaker Q5N.
4. Open the battery circuit breaker(s) QF1.
5. Reset the alarms by pressing the fault log clear button (the left most button on the
lower hidden panel as shown in Figure 2-8).
6. Open the input isolation circuit breaker Q1 or the upstream circuit breaker feeding
Q1.
After taking these steps, make a record of the display lights and alarm messages, call your
local MGE Field Engineer or call 1-800-438-7373 for assistance.
3.4 Troubleshooting
and MGE Servicing
3 — 3Maintenance and Service
User’s guide