Maintenance; Scope; Troubleshooting; After-Sales Support - MGE UPS Systems EX 5 Installation And User Manual

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
◗
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
17
LED is on, and Bypass
AC source is present
the LCD display shows
BAD CONNECTION
REWIRE AC NORMAL
17
LED is on,
the LCD display shows:
LOAD LEVEL
XX kW / XX KVA
17
LED is on, and Bypass
AC source is present
the LCD display shows:
THERMAL OVERLOAD
1XX%
18
LED is on, the LCD
display shows:
CURRENT OVERLOAD
15
LED is on, but
the LCD display shows:
BYPASS REVERSE
REWIRE BYPASS
Audible alarm is on,
the LCD display shows:
I/O BOX REMOVED
86-86000-00 B01
17 18
or is on, there is an operating anomaly or an alarm.
Indication
AC source is not connected
to the correct terminals.
Load supplied by Bypass AC source.
UPS overload
Short circuit conditions on output
devices.
180° degree phase shift between
bypass and normal AC source.
Input/Output box not
installed correctly.

Maintenance

Maintenance
Correction
Rewire correctly to the Normal AC
source.
Push the ON button for more than
3 seconds.
Check if any device is shorted or
failed.
Check if any load has shorted or
failed.
Check if Bypass source is correctly
wired
(in case of upstream transformer use).
Check if the Input/Output box
is correctly installed. See Section 2.7.
Check for correct I/O Box.
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