25
•
Check the condensate drain to make sure it has been trapped and primed with water.
Verify that it drains freely, with no leaks. If the drain is outside or in an unconditioned
space, make sure it has been heat traced. If a condensate pump has been installed,
make sure it operates properly.
•
Check the operation of the remote condenser (on units equipped with this option).
Make sure that the fans cycling switches, which are mounted on the condenser, are
correctly piped and have been set according to the Desert Aire condenser wiring
diagram. Verify that the fans are blowing air vertically upward when they run.
•
Check the temperature and humidity readings displayed on the controller. If you
think the values are incorrect, check the sensor or its field-installed wiring for damage.
•
Check the operation of the auxiliary heaters by temporarily raising the air temperature
setpoint on the Desert Aire controller. The duct heater(s) or heating valve should
energize.
3.5
Routine Maintenance Schedule
3.5.1 Service Every Month
•
Check the air filters and replace them if necessary.
•
Check the coils in the dehumidifier and the remote condenser. Use
compressed air or a commercial coil cleaner if they are dirty or plugged.
•
Verify that the air flow around the remote condenser remains unobstructed.
3.5.2 Service Every Six Months
•
Check the blower belts for wear or glazing. Tighten or replace them if
necessary. Do not use the belt dressing compound.
•
Check and tighten all field and factory electrical connections.
•
Check for dirty coils in the dehumidifier and the optional remote condenser.
•
Check and clean the drain pans and blow out the condensate drain line. If
the drain is plugged, water will back up into the dehumidifier and flood the
mechanical room.
•
Check and adjust the air flow per specifications. Dirty ducts, filters, and coils
may have reduced the total air volume.
•
Check the operating pressures of the refrigeration circuits.
•
Check the current draw of each blower motor.
•
Check the current draw of each compressor.
•
Lubricate the blower motor(s).
•
Lubricate the blower bearings.
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