Procedure For Completely Powering Down The Ups - Liebert 7200 Series User Manual

7200 Series UPS User Manual
Single Module and 1+1 Parallel System
MODEM CONNECTION
> ON/OFF UPS CONTROL <
RELOAD UPS DATA
RESET BUFFERS
The following window allows the operator to select the UPS inverter ON or OFF, select the rectifier ON or OFF,
select the rectifier to manual or float voltage and to switch OFF the Line (bypass) voltage to the load
IF YOU ARE NOT SURE OF WHAT YOU ARE DOING - THEN DO NOT DO IT.
> INVERTER
BYPASS
RECTIFIER
RECTIFIER
9. Ensure INVERTER is selected by the cursors and press the ENTER key:
ROTATE
The OFF selection will be highlighted, using the UP arrow key, rotate between the selections
INVERTER
After approximately 20 seconds the Module Mimic LED's will change so that the Load on
inverter ( 2 ) will light steady green and the Load on bypass ( 3 ) will extinguish.
10. Return the Display window to normal by repeatedly pressing the ESCAPE key back through the
various windows until the default screen is displayed.
The UPS is operating normally with its inverter supplying the load.
2.5

Procedure for completely powering down the UPS

This procedure should be followed to completely power down the UPS and LOAD. All power
switches, isolators and circuit breakers will be opened and there will be no load power.
The following procedure will switch off all power to the load equipment.
1. Open the Battery circuit breaker and the Rectifier input power switch Q1.
The Module Mimic indicator ( 2 ) Load on Inverter will extinguish and the Load on Bypass
indicator
( 3 ) will flash amber. The battery not available indicator ( 4 ) will light amber and the battery
bar graph LED's will all extinguish.
The display window will show messages reflecting the actions taken ( i.e. Load on Bypass:
Battery Breaker open: Rect. breaker open: etc. ).
2. Open the Output power switch Q4 and the bypass power switch Q2.
All operator LED indications and messages will extinguish as the mains driven internal power
supplies decay.
3. To completely isolate the UPS from the a.c. supplies, the main external power input isolator
(both isolators, where separate supplies are provided for rectifier and bypass ) should be
opened.
Wait 5 minutes for the internal d.c. bus bar capacitors to discharge.
document in response to "powersure ups"
Press the ENTER key.
Caution
OFF <
ON
ON
MAN

START
EXIT C
offered ( in this case it will be ON or OFF ) select ON.
ON
Press the ENTER key to execute your order.
Caution
The UPS is now completely powered down.
Chapter 2 - Operating Instructions
Procedure
Page 2-5
Issue 6
(03/98)