38
SALICRU
9. MAINTENANCE
This chapter introduces UPS maintenance, including the main-
tenance instructions of power module and monitoring bypass
module and the replacement method of dust filter.
9.1. PRECAUTIONS
Only maintaining engineers can maintain the power module
and monitoring bypass module.
1.
The power module should be disassembled from top to
bottom, so as to prevent any inclination from high gravity
centre of the cabinet.
2.
To ensure the safety before maintaining power module and
bypass module, use a multimeter to measure the voltage
between operating parts and the earth to ensure the
voltage is lower than hazardous voltage.
3.
Bypass module is not recommended to hot swap; only when
UPS is in Maintenance Bypass Mode or UPS is completely
powered off, the bypass module can be disassembled.
4.
Wait 10 minutes before opening the cover of the power
module or the bypass after pulling out from the Cabinet.
9.2. INSTRUCTION FOR MAINTAINING POWER MODULE
Confirm the UPS is operating in Normal Mode and the bypass is
working normally before pulling out the power module needed
to be repaired.
1.
Ensure the remaining power module will not be overloaded.
2.
Power off the module.1)Enable.LCD panel -> Menu Operate
-> Enable Module “OFF” Key
; 2)
Press the “OFF” key for 3 seconds, the power module quits
from the system.
3.
Remove the mounting screw on the two front sides of the
power module (See Fig.20) and pull out the module by two
persons.
4.
Wait 10 mins before opening the cover for repairing.
5.
After the repairing is done, push the power module into the
cabinet following the steps in section 6.2 and the power
module will automatically join the system.
9.3. INSTRUCTION FOR MAINTAINING BYPASS MODULE
Confirm the UPS is operating in Normal mode and the bypass
is working normally before pulling out the bypassing module
needed to be repaired. Follow the steps below to maintain the
bypass module.
1.
Transfer the system to bypass mode through the LCD con-
trol panel (see section 7.6.5).
2.
Close maintenance bypass switch, the UPS power will be
supplied by maintenance bypass.
3.
Remove the mounting screw on the two front sides of the
bypass module (See Fig. 20) and the front signal cable con-
nects to the bypass module.
4.
Pull out the bypass module and the LCD touch screen goes
off.
5.
Wait 10 mins before opening the cover for repairing.
6.
After the repairing is done, push the bypass module into the
cabinet following the steps in section 6.2 and the LED touch
screen goes on.
7.
The bypass turns on 30S after the LED touch screen goes on
and the bypass indicator goes green and the load is pow-
ered through maintenance bypass and static bypass.
8.
Turn off the maintenance bypass switch and the load is
powered through bypass. The rectifier starts followed by
the inverter.
9.
After 60S, the system transfers to Normal mode.
9.4. REPLACING DUST FILTER (OPTIONAL)
As shown in Fig. 58, there are 3~4 dust filters on the back of
UPS’ front door, each filter is held in place by a bracket on either
side of each filter. The procedure of replacing each filter is as
follows:
1.
Open the front door and locate the filters on the back side
of the front door.
2.
Remove one bracket.
3.
Remove the dust filter to be replaced and insert the clean
one.
4.
Reinstall the bracket.