S&C PureWave Operation And Maintenance Manual page 39

Quarterly Maintenance
− continued
Figure 20. Location of the air-inlet filter and outlet vent hood.
For the 250-kW and 500-kW PureWave UPS Systems, use the following steps.
(For the 750-kW and 1000-kW PureWave UPS Systems, go to page 40.) The air-inlet
vent is located on the switchgear bay door. The inlet filter is located on the inside of the
switchgear bay door. The air-outlet vent hood is located at the top of the control bay. See
Figure 20.
¨ Inspect the air-inlet vent located on the switchgear bay door. Clean any debris and
obstructions that can restrict air flow going into the PureWave UPS System.
¨ Inspect the air-inlet filter (inside of the switchgear bay door) for debris and obstructions
that can cause air-flow restrictions. The filter can be replaced by unbolting the mounts
with a ½-inch wrench (or socket).
¨ Rust found? 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:_________________________
(After the above is complete, go to the departure procedures on page 41.)
Maintenance
Air-outlet vent hood
Air-inlet filter
Air-inlet vent (front side of door)
Date: ___________
S&C Instruction Sheet 653- 502 39