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12.6 Transfer to Bypass with UPS Shutdown
1.
On UPS, turn the MODE key switch to BYPASS for one second.
2.
Confirm UPS breaker CB4 closes and UPS breaker CB3 opens.
The UPS switches to Bypass mode. If the bypass source is not available, the power
processor unit remains on and an alarm sounds.
3.
On UPS monitor screen, verify "On Bypass" message appears and the Bypass
mode indicator illuminates on the Control Panel
4.
On UPS, turn the MODE key switch to BYPASS for one second.
5.
Observe UPS breaker CB1 and Battery Disconnect CB2 open.
The bypass source supplies the critical load, the power processor unit de-energizes
and cooling blowers shutdown.
WARNING:
Power is present at UPS CB1, until
breaker is opened.
12.7 UPS and Critical Load Shutdown
To perform maintenance or service on the critical load, shut down power to the
load by performing the following procedure:
1.
Transfer critical load to bypass by performing procedure in paragraph 12.4.
2.
Turn off all equipment that is being powered by the UPS.
3.
Press the EMERGENCY UPM OFF pushbutton on the Control Panel.
WARNING:
Power is present at the UPS CB1 input, until
circuit breaker is opened.
4.
Open the UPS input feeder circuit breaker.
12.8 Using the UPS EMERGENCY UPM OFF
Pushbutton
An UPS Emergency UPM Off is initiated by the covered, red EMERGENCY UPM
OFF pushbutton on the UPS Control Panel. This pushbutton is protected by a
clear plastic shield to prevent accidental activation. In an emergency, you can
press this pushbutton to instantaneously control the UPS output. The UPS
EMERGENCY UPM OFF pushbutton functions differently, depending on the
Emergency Power Off (EPO) option specified when ordered. The options available
are as follows:
12--4
System is now on bypass.
.
the upstream UPS input feeder circuit
the upstream UPS input feeder
Powerware 9315 (500 kVA- -750 kVA) Installation and Operation
164201244 REV. D 030101
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