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6.
Service
This chapter introduces the UPS service, including the service procedures of the power module,
STS & control module, battery module and the replacement of air filter.
6.1 Replacement Procedures Of Power Module, STS & Control Module And
Battery Module
6.1.1 Notes
1. Only the customer service engineers shall service the power modules, bypass module and
battery modules.
2. Remove the power modules, bypass module and battery modules from top to bottom, so as to
prevent cabinet toppling due to high centre of gravity.
3. To ensure safety, before servicing the power modules and bypass module, be sure to use a
multimeter to verify that the DC bus capacitor voltage is lower than 60Vdc, and that the
voltages between the earth and the components you are going to work on are under dangerous
voltage values, that is, lower than 60Vdc or 42.4Vac peak value.
4.
The static transfer switch module is NOT hot pluggable.
It should be replaced only when
the UPS is in maintenance bypass mode or completely powered off.
5. The power modules and bypass module should be serviced five minutes and installed in the
cabinet again 10 minutes after they are removed.
6.1.2 Power Module Replacement Procedures
Confirm UPS is in normal mode and bypass function/source is available.
1. Enter to “menu”
control
Turn To Bypass
YES on the operator control and display panel
for manually turn off the inverters. Then, the UPS transfers to bypass mode.
2. Turn ready switch to “
” position on replaceable power module.
3. Two minutes later, remove the fixing screws on both sides of the front panel of the module and
pull the module out from the cabinet.
Note:
The module will be blocked by a metal safe locker on the left side of the module when the
module is pulled out halfway from the cabinet. At this point, you must press the metal safe locker
before you continue to pulling the module out.
4. After servicing the module, confirm that the DIP switch of the module is set correctly and the
ready switch is in unready state “
”.
5. Push the module into the cabinet and tighten the screws on both sides. If it’s more than one
power module to re-install, please wait 10-second duration before installing another module.
6. Wait for two seconds before turning ready switch of the module to “ ” position, it will be added
into the system automatically and begin to work few seconds later.
7. Press manual
control
system turn on
YES on the operator control and display panel for