9 PREVENTIVE MAINTENANCE CHECKLIST
Inspection Date Job Name
Unit Model # Unit Serial Number #
Room Temperature/Humidity °% Ambient Temperature °
Not all units will have all components. To determine your unit’s configuration, compare the Unit Model #
above above and the information in the Components and Nomenclature section.
Good maintenance practices are essential to minimizing operation cost and maximizing product life. Read
and follow all applicable maintenance checks listed below. At a minimum, these checks should be
performed semi-annually. However, maintenance intervals may need to be more frequent based on site-
specific conditions. Review the unit user manual for further information on unit operation. We recommend
the use of trained and authorized service personnel, extended service contracts, and factory-certified
replacement parts. Contact your local sales representative for more details.
Check all that apply:
Evaporator/Filters
1. Check/Replace filters
2. Wipe section clean
3. Coil clean
4. Clean condensate pan
5. Check/Test filter-clog switch operation
Blower Section (evaporator fans)
1. Mounting bolts tight
2. Blower wheels free of debris and spins freely
3. Check motor mount
4. Check/Test air sail switch
5. Motor amp draw
• Compare to nameplate amps
#1 L1 L2 L3
#2 L1 L2 L3
Electrical Panel
1. Check fuses
2. Check contactors for pitting (Replace if pitted)
3. Check/Re-torque wire connections
Controls
1. Check/Verify control operation (Sequence)
2. Check/Test changeover device(s) (if equipped)
9 Preventive Maintenance Checklist 47
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