Figure 44 scc shutdown procedures screen, Figure 45 module shutdown procedures screen, Operation 57 – Liebert 1000kVA User Manual
Page 63
Operation
57
Figure 44 SCC shutdown procedures screen
To perform the shutdown procedure, transfer the critical load from the UPS system to the bypass line.
Shut down each UPS module according to the module Shutdown Procedures.
Refer to 3.4.5 - Shutdown Procedures for more details, including emergency shutdowns.
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 45 Module shutdown procedures screen
SHUTDOWN PROCEDURES
1.
If load is not already being supplied by the bypass line, select the
"LOAD TRANSFER PROCEDURE" screen and follow the instructions to transfer
the load to bypass.
2.
Go to the modules(s) and follow the module "SHUTDOWN PROCEDURES."
3.
Press the ALARM RESET button to clear alarms which are no longer active.
4.
If necessary for maintenance purposes, open the static switch disconnect
circuit breakers.
5.
Wait approximately two (2) minutes before attempting any other action .
© 1989-2003
SHUTDOWN PROCEDURES
NEXT PAGE
MASTER MENU
1.
If load can not be supported by the remaining modules when this module
is taken off line, go to the system control cabinet and select the "LOAD
TRANSFER PROCEDURES" screen. Follow the instructions to transfer
to bypass.
2.
Open the module output breaker by simultaneously pressing the OUTPUT TRIP
and CONTROL ENABLE pushbuttons.
3.
Open the module battery breaker by simultaneously pressing the BATTERY TRIP
and CONTROL ENABLE pushbuttons.
4.
Manually open the input breaker by moving the handle to the OFF position.
DOWN :
SELECT :
FIRST PAGE
MASTER MENU
5.
Verify breaker status on the "MONITOR / MIMIC" screen.
6.
If necessary for maintenance purposes, turn the control power switch (fuse
disconnect on some models) to the OFF position.
7.
Wait a minimum of two (2) minutes before attempting any other action.
UP :
SELECT :
SHUTDOWN PROCEDURES (Cont'd)
© 1989-2003
© 1989-2003