S&C Instruction Sheet 653- 502
47
Maintenance
Figure 28. Location of the air-inlet vent filter.
Figure 27. Location of the air-inlet vent hood.
Switchgear bay
Air-inlet vent hood
Annual Maintenance
− continued
For the 750-kW and 1000-kW PureWave UPS Systems, use the following steps
for the switchgear bay.
(For the 250-kW and 500-kW PureWave UPS Systems, go to
page 46.)
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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. See Figure
27 for an example of a 1000-kW 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.
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. See Figure 28.
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Air-inlet filter replaced?
YES
or
NO
(circle one)
¨
Why or why not?_____________________________________________________________
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Clean the general interior of the switchgear bay using a vacuum.
¨
Verified By:_________________________ Date: ___________
Filter
