Ups Shutdown With Load Transfer On Manual Bypass Q2 - GE LP 33 Series Operating Manual

8.1.2 UPS shutdown with load transfer on manual bypass Q2

The purpose of this procedure is to supply the load directly by mains through manual bypass Q2.
This procedure is normally performed when the UPS must be completely switched OFF for maintenance
or service purpose, performed by an authorised Service Centre.
NOTE !
This procedure must not be performed if the UPS is used as frequency converter.
1. Disconnect the inverter by pressing "Inverter OFF" ( O ) key and hold until the LED Inverter (7)
turns OFF.
Load is transferred to mains by automatic bypass.
LED Alarm is lit and the LED Operation is Off.
The synoptic diagram must display the status "LOAD SUPPLIED BY
AUTOMATIC BYPASS".
2. Close the manual bypass switch Q2 (Pos. I).
Load is now supplied parallel through automatic bypass and manual bypass Q2.
The synoptic diagram must display the status "LOAD SUPPLIED BY
AUTOMATIC BYPASS AND MANUAL BYPASS Q2".
3. Open the output switch Q1 (Pos. 0).
The load is now supplied only through the manual bypass Q2.
The synoptic diagram must display the status "LOAD SUPPLIED BY
MANUAL BYPASS Q2".
4. Press "Total Off" key.
5. Remove the external battery fuses.
In case of GE battery cabinet:
− Open fully and remove the cover of fuse-holder by using correctly the handle;
− Remove the fuses from their place, re-install and close fully the cover of fuse-holder.
The acoustical alarm is activated, press "MUTE" key to reset it.
Modifications reserved
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Operating Manual LP 33 Series 60-80-100-120 kVA / S2