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SK-90610-Y4_EN
5. Operations
UPS
BYPASS
MBP11K208:
1. Put the UPS in
“internal Bypass mode”
(refer to the UPS user manual)
2. Verify that the UPS is on Bypass mode by checking UPS display panel (refer to the UPS user manual)
3. Set the MBP manual Bypass switch to
"Bypass"
position. The
"Bypass mode" red light
of the
MBP
goes
On, indicating that the load is supplied directly by AC source
4. Switch the Normal AC source switch of the MBP to the "0" position and wait 30 seconds
5. UPS stops, the UPS can now be disconnected, as described below:
p
First lock the Normal AC source switch
(3)
of the MBP to the "0" position (the switch protection frame is
able to fit a cable tie or a metallic locker).
3
p
After opening the I/O terminal blocks cover of UPS, check if hazardous voltage is no longer present on
UPS terminal blocks by using an electrical safety tester
p
Disconnect the MBP conduits, and the MBP detection cable (following UPS versions)
p
On both MBP conduits just disconnected from the UPS, link the internal wires together (line 1 and line 2
wires linked to ground wire)
p
Replace the UPS
Hazardous voltage and lost load risk: do not manipulate the MBP manual Bypass switch without UPS
connected to the MBP power conduits
.
