Do not start system without air filters properly installed and inspection doors screwed.
Otherwise, blockages in heat exchanger may occur.
Maintenance
7
Filter Maintenance
For best performance, c
lean up the air filters
periodically. Best on every
3
operating
months
,
or at least once per year
.
Change filters after cleaning
them
6 times
, or earlier if
necessary.
WARNING
Disconnect all electric power, including remote disconnects before servicing.
Follow proper lockout / tagout procedures to ensure the equipment cannot be
inadvertently energized. Secure drive sheaves to ensure rotor cannot freewheel.
Failure to secure drive sheaves or disconnect power before servicing could result in death
or serious injury. If there is a heater, wait for the heater to cool.
WARNING
STEP 1
To open the service door, remove out 4 screws on the service cover.
STEP 2
With the opened service door, the filter service holes for fresh air filter(s) and return
air filter will be visible.
STEP 3
Remove the filter(s) as shown in the figure and do the maintenance as described in
this manual.
HOW TO ACCESS FILTERS
