Liebert 1000kVA manual Module Shutdown Procedure, Module shutdown procedures screen

Operation

Module Shutdown Procedure

Perform a Module Shutdown Procedure when you want to remove power from a UPS module when required for maintenance.

Before performing any maintenance on your Liebert Series 610 UPS, observe ALL of the WARN- INGS in 4.0 - Maintenance.

Use the module Monitor/Mimic Display to determine the operating condition of the UPS module. From the module Master Menu, select the Shutdown Procedures screen. Note that this is a two-page screen.

Figure 68 Module shutdown procedures screen

DOWN :	NEXT PAGE
SELECT :	MASTER MENU	© 1989-2003

SHUTDOWN PROCEDURES

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.

UP : FIRST PAGE

SELECT : MASTER MENU

© 1989-2003

SHUTDOWN PROCEDURES (Cont'd)

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.

Step 1. If the UPS module is on-line, simultaneously press the Output Trip and Control Enable pads (Figure 10). This will open the UPS module output circuit breaker (CB2, Figure 8).

Step 2. Open the module battery disconnect (MBD) circuit breaker by simultaneously pressing the Battery Trip and Control Enable pads (Figure 10).

Step 3. Open the UPS input circuit breaker by moving the handle to the OFF position (Figure 8).

Return to the Monitor/Mimic Display to verify status of the circuit breakers. Press the Alarm Reset pad to clear alarm messages.

Step 4. If maintenance is required on the UPS controls, turn the Control Power switch to the OFF position (Figure 8). You may also want to open the Rectifier Input Breaker (RIB), external to the UPS cabinet.

! WARNING

Lethal voltages are present within this unit even when it is not on or when utility is not being supplied. Observe all cautions and warnings in this manual. Failure to do so could result in serious injury or death. Do not work on or operate this equipment unless you are fully qualified to do so! Never work alone.

Before performing any maintenance on your Liebert Series 610 UPS, observe ALL of the WARN- INGS in 4.0 - Maintenance.

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