Operation 61
Goto the module Master Menu and move the cursor to SHUTDOWN PROCEDURES. Press the Select pad
andthe module Shutdown Procedures screen is displayed.
Thistwo-page screen contains the steps you must follow to perform a controlled shutdown of each UPS module.
Theinstructions are listed so you can review them before performing the controlledshutdown.
Figure 40 Module Shutdown Procedures Screen
Toperform the shutdown procedure, transfer the criticalload 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
moduleinput circuit breaker. The Control Power switch may be turned Offif 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. Ifload can not be supported by the remaining modules w hen this module
istaken off line, go to the system controlcabinetand select the "LOAD
TRANSFERPROCEDURES" screen. Follow the instructions to transfer
tobypass.
2. Openthe module output breaker by simultaneously pressi ng the OUTPUTTRIP
andCONTROL ENABLE pushbuttons.
3. Openthe module battery breaker by simultaneously pressing the BATTERY TRIP
andCONTROL ENABLE pushbuttons.
4. Manuallyopen the input breaker by moving the handle to the OFF position.
DOWN :
SELECT :
FIRSTPAGE
MASTERMENU
5. Verifybreaker status on the "MONITOR / MIMIC"screen.
6. Ifnecessary for maintenance purposes, turn the control power swi tch (fuse
disconnecton some m odels) to the OFFpos ition.
7. Waita m inimum of two (2) minutes before attempting any other action.
UP :
SELECT :
SHUTDOWNPROCEDURES (Cont'd)
DISCONTINUED
PROD U C T