Installation and operation 5
8
Maintenance Bypass PMC12 1 - 3 kVA
EN
Fig. 6 Mounting brackets for wall installation
Fig. 7 Wall installation
5.4 Replacing/repairing the UPS
Please observe the sequence of steps for UPS
replacement / repair.
1. UPS mode
＝＞
bypass mode (service
bypass)
Step 1: Make sure that the orange lamp is lit. If
the lamp is not lit, please refer to the Fault de-
scription section on page 9.
Step 2: Switch the bypass switch from "UPS" to
"UTILITY" (bypass).
Step 3: Switch off the UPS.
Step 4: Disconnect all connections between the
UPS and the maintenance bypass.
Step 5: Now you can repair the UPS or connect a
new UPS control module.
2. Bypass mode (service bypass)
＝＞
UPS
MODE
Step 1: Connect the input and output of the UPS
to the corresponding connectors on the bypass.
Switch on the UPS as described in the UPS man-
ual.
Step 2: Make sure that the green lamp for the
UPS on the bypass is lit. If the green lamp is off
even though the UPS is operational, please refer
to the Fault description section on page 9.
Step 3: Switch the bypass switch from "Utility" to
"UPS". Now the connected load is protected by
the UPS and supplied with power.
