User manual

Maintenance

4.0 Scope

Maintenance includes a troubleshooting guide of symptoms and possible solutions, hot swapping the Power Module

and Battery Module, and testing scenarios.

4.1 Troubleshooting

◗ If any of LEDs or is on, there is an operating anomaly or an alarm.

◗ Use "scroll up" or "scroll down" function button to reset the audible alarm.

Table 4-1: Troubleshooting Not Requiring MGE Office Protection Systems After-Sales Support.

Symptoms Indication Correction

LED is on, and Bypass AC source is not connected Rewire correctly to the Normal AC

AC source is present to the correct terminals. source.

the LCD display shows

BAD CONNECTION

REWIRE AC NORMAL

LED is on, Load supplied by Bypass AC source. Push the ON button for more than

the LCD display shows: 3 seconds.

LOAD LEVEL

XX kW / XX KVA

LED is on, and Bypass UPS overload Check if any device is shorted or

AC source is present failed.

the LCD display shows:

THERMAL OVERLOAD

1XX%

LED is on, the LCD Short circuit conditions on output Check if any load has shorted or

display shows: devices. failed.

CURRENT OVERLOAD

LED is on, but 180° degree phase shift between Check if Bypass source is correctly

the LCD display shows: bypass and normal AC source. wired

BYPASS REVERSE (in case of upstream transformer use).

REWIRE BYPASS

Audible alarm is on, Input/Output box not Check if the Input/Output box

the LCD display shows: installed correctly. is correctly installed. See Section 2.7.

I/O BOX REMOVED Check for correct I/O Box.

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4 — 186-86000-00 B01 Maintenance