40
S&C Instruction Sheet 653-502
Maintenance
Quarterly Maintenance
− continued
For the 750-kW and 1000-kW PureWave UPS Systems, use the following steps
.
(
For the 250-kW and 500-kW PureWave UPS Systems, go to page 39.
) The air-inlet vent
hood is located on top of the switchgear bay. The air-outlet vent hood is located on top of
the control bay. See Figure 21 for an example of a 1000-kW PureWave UPS System.
¨
Inspect the air-inlet vent hood at the top of the switchgear bay. Clean any debris or
obstructions that can restrict air flow going into the PureWave UPS System.
WARNING
Do not let any materials or tools fall through the air inlet. The contact of conductive materials
or tools with energized parts inside the equipment can result in serious equipment damage,
personal injury, or even death.
¨
Inspect the air-inlet filter for debris and obstructions that can cause air flow restrictions.
See Figure 22. The filter can be replaced by unbolting the top of the air-inlet vent hood
with a wrench and screwdriver. When the hood is opened, the filter must be bent into
place and secured by the clips provided. The white part of the filter should face up, and
the pink part of the filter should face down into the switchgear bay.
¨
Air-inlet filter replaced?
YES
or
NO
(circle one)
¨
Why or why not?_____________________________________________________________
¨
Inspect the air-outlet vent hood at the top of the control bay. Clean any debris or
obstructions that can restrict air flow going out of the PureWave UPS System.
¨
Perform general housekeeping, ensuring there is no garbage or debris in or around the
enclosure.
¨
Verified By:_________________________ Date: ___________
Figure 22. Location of the air-inlet filter.
Figure 21. Location of the air-inlet and air-outlet vent hoods.
Air-outlet vent hood
Air-inlet vent hood
Switchgear bay
Control
bay
Air-inlet filter
