Download PW8000RI User Manual Issue 1.3.2.book

4: Operation
4.5.3 Transfer to Maintenance Bypass Mode
If required, the load can be transferred to the Maintenance Bypass Supply to enable the UPS Module to be
powered down for maintenance or servicing. This will connect the load to the unprotected bypass mains
supply.
WARNING: Before you close the Maintenance Bypass isolator ensure that the UPS is
operating in the Bypass Mode.
All the operations in this section must be performed by authorised and trained personnel.
This procedure describes the sequence of operations to transfer the load to the Maintenance Bypass supply
and then shut down the UPS Module(s).
Prior to commencing this procedure, check and confirm the following UPS system status (on all working UPS
Module in a multi-module system):
• The mimic panel LED indications should be as per the following table (on all working UPS Module in a
multi-module system):
LINE 2
BY PASS
LINE 1
INVERTER
LED
LOAD
BATTERY
Colour
LINE 1
Green
LINE 2
Green
BY PASS
OFF
INVERTER
Green
BATTERY
Green
• The LCD panel should display LOAD PROTECTED. If anything other than LOAD PROTECTED is
displayed then press the RESET button, and if LOAD PROTECTED is still not displayed there is a
problem with the UPS system and you should seek assistance!
Transferring the UPS to ‘Bypass’ mode:
1.
On any one of the UPS Module’s mimic panel press the ENTER key once to access the menu system.
2.
Using the UP/DOWN keys, move the cursor so that it is adjacent to COMMANDS and then press the ENTER
key.
3.
Using the UP/DOWN keys, move the cursor so that it is adjacent to LOAD TO BYPASS and then press the
ENTER key.
a)
4.
The UPS system will transfer the load to static bypass – on all UPS Module in a parallel system.
On all UPS Module check and confirm that:
a)
b)
c)
The INVERTER LED has extinguished.
The BYPASS LED is green.
The LCD displays LOAD NOT PROTECTED.
LINE 2
BY PASS
LINE 1
INVERTER
LED
LOAD
BATTERY
4-12
Colour
LINE 1
Green
LINE 2
Green
BY PASS
Green
INVERTER
OFF
BATTERY
Green
UPS415-01-00 Kohler PW 8000DPA RI User Manual Dated 07-12-11