10 PREVENTIVE MAINTENANCE CHECKLIST
Source: DPN002952, Rev. 4
Inspection Date
Job Name
Indoor Unit Model #
Indoor Unit Serial Number #
Condenser/Drycooler Model #
Condenser/Drycooler Serial #
Room Temperature/Humidity
° %
Ambient Temperature
°
Not all units will have all components. To determine your unit’s configuration, compare the
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
o
Check/Replace filters.
o
Make sure that the grille area isunrestricted.
o
Wipe section clean.
o
Coil clean
o
Clean the condensate pan.
o
Clean the trap in the condensate drain.
o
Check/test the filter-clog switch operation (if equipped).
Blower Section (EC fan)
o
Verify that the mounting bolts are tight.
o
Fan guard bolts tight
o
Confirm that the impeller spins freely.
o
Check/test the air sail switch (if equipped).
o
Check the motor amp draw.
o
Compare to nameplate amps.
#1
L1
L2
L3
#2
L1
L2
L3
#3
L1
L2
L3
o
Check the belt tension and condition (replace if needed).
o
Check the sheave/pulley (replace if worn).
10 Preventive Maintenance Checklist
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