3. Replacing the fan filter
Check the fan filter installed on the rear of the controller for dust and damage.
w
WARNING
Before beginning work, turn off the controller power switch on the control panel or the
primary power source.
Remove the filter cover.
1
The filter cover is attached to the controller by four latches.
Place your fingers on the top two corners of the filter cover and pull the cover toward
you to remove it.
Remove the filter cover
Check the fan filter for dust accumulation and damage.
2
If the fan filter is dirty or damaged, then replace it with a new one.
Reattach the filer cover.
3
After attaching the filter cover, make sure the four latches of the filter cover are
securely fitted in place.
3. Replacing the fan filter
Pull toward you.
Chapter 9 PERIODIC INSPECTION
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