Maintenance
64 Modular UPS 25KVA~900KVA User Manual
6. Maintenance
This chapter introduces UPS maintenance, including the maintenance instructions of
power module and monitoring bypass module and the replacement method of dust
filter.
6.1 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, i.e. DC voltage is lower than 60Vdc,
and AC maximum voltage is lower than 42.4Vac.
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.
6.2 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.3-10) 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 3.3.2 and the power module will automatically join the system.
6.3 Instruction for Maintaining
6.3.1 Maintaining Bypass Module for 6-slot and 10-slot Cabinet
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 control panel(Refer to
section 4.5.5)
2.
Open the battery switch, close maintenance bypass switch; the UPS power will be
supplied by maintenance bypass.
3.
Pull out the bypass module and the load is powered through maintenance bypass.
4.
Remove the mounting screw on the two front sides of the bypass module (See
Fig.3-10) and the front signal cable connects to the bypass module.
5.
Pull out the bypass module and the LCD touch screen goes off.
