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Starting and Stopping the UPS
4-2
EATON Powerware
®
9315 UPS (200–300 kVA) Operatio n Manual S 164201036 Rev F powerware.com
The following describes the switches on the Control Panel (see Figure 4-1):
Ī The MODE switch is a two-position rotary switch that controls the manual transfer of the
UPS to and from Bypass mode. The MODE switch is used to:
- PlacethecriticalloadinBypassmodewhentheUPSisoperatinginNormalmodeand
thebypasssourceiswithinacceptablelimits.Ifthetransferdoesnotoccurwithintwo
seconds, an alarm sounds.
- Prevent transfer to Normal mode when the UPS is in Bypass mode.
- Shut down the power processing unit (inverter and rectifier) of the UPS.
Ī The BATTERY switch is a two-position rotary switch that allows you to manually shunt
trip the battery breakers in remote cabinets.
Ī The circuit breaker (CB1) switch controls the operation of the rectifier and inverter. If
CB1 is on (closed), the rectifier turns on when the START switch is activated and the
propervoltageisattheinputterminals.
Ī The PUSH TO RESET button is described in “Resetting the UPS System after Load Off” on
page 11-2.
Ī The START switch activates the power controls on the Control Panel. The START switch
is center-biased (the key will rest only in the upright position). Its operation is similar to
that of an automobile ignition switch. After setting the operator controls, you turn the
START switch to the right momentarily to activate the controls. When you release it, it
returns to the upright position.
The following sections d escribe how to operate these controls to start, stop, or change the
operating mode of the UPS.
4.1.1 To Place the UPS in Normal Mode
1. Close the Input Power Feeder breaker.
2. Verify that the Load Off PUSH TO RESET button is pressed in.
3. Turn the BATTERY switch to NORMAL.
4. Turn the MODE switch to NORMAL.
5. Move the CB1 switch to ON.
6. Turn the START switch to the right momentarily.
The rectifier turns on, then the inverter turns on. The UPS display and alarm alert
you to close the battery breaker.
7. Close the battery breaker(s).