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Operation 61
Go to the module Master Menu and move the cursor to SHUTDOWN PROCEDURES. Press the Select pad
and the module Shutdown Procedures screen is displayed.
This two-page screen contains the steps you must follow to perform a controlled shutdown of each UPS module.
The instructions are listed so you can review them before performing the controlled shutdown.
Figure 40 Module Shutdown Procedures Scr een
To perform the shutdown procedure, transfer the critical load from the UPS system to the bypass line (at the
SCC). Then trip open the UPS module output and battery circuit breaker (MBD), and manually open the UPS
module input circuit breaker. The Control Power switch may be turned Off if required for maintenance proce-
dures.
Refer to 3.3.3 - Shutdown Procedures for more details, including module shutdowns for service and emergency
shutdowns.
SHUTDOWNPROCEDURES
NEXTPAGE
MASTERMENU
1. Ifloadcannot besupported bythe remainingmodules when this module
is taken offline, goto thesystem control cabinet andselect the"LOAD
TRANSFERPROCEDURES"screen.Follow theinstructions totransfer
tobypass.
2. Open themodule outputbreakerbysimultaneouslypressing theOUTPUTTRIP
andCONTROLENABLE pushbuttons.
3. Open themodule batterybreakerby simultaneously pressingthe BATTERYTRIP
andCONTROLENABLE pushbuttons.
4. Manuallyopen theinput breakerbymoving thehandle tothe OFFposition.
DOWN :
SELECT :
FIRSTPAGE
MASTERMENU
5. Verifybreakerstatus onthe"MONITOR/ MIMIC"screen.
6. Ifnecessaryfor maintenancepurposes , turnthe controlpowerswitch(fuse
disconnect onsomemodels)to theOFFposition.
7. Wait aminimum of two(2)minutes beforeattempting anyotheraction.
UP :
SELECT :
SHUTDOWNPROCEDURES (Cont'd)
DISCONTINUED
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