DA2 Series Dehumidifier Owners Manual
30 Dectron, Inc. November 2009
The following steps are important to the proper function and long life of the unit.
Every Month
Check the Air Filters
• All units have return-air filters. The unit cannot work properly with dirty filters.
• All dirty filters should be replaced with identical new filters.
• Do not operate the unit for any amount of time without all filters in place.
Check the compressor(s) oil level, if compressor(s) is equipped with an oil-level sight glass.
Check and follow the lubrication schedules (if any) for the blower and motor.
Check the belt(s) (if any)
• Check for excessive wear. Be sure the belt(s) will operate another month.
•
Check the blower-belt tension and alignment. Belts should not be so loose as to cause increased slip, nor so tight
as to cause excessive shaft-bearing wear. CAUTION:
Never open a sheave to remove, install, or adjust a
belt - use the belt tensioning screw only. Only a qualified technician should change sheave settings.
Check that the humidity set point is near that specified on the unit nameplate.
Check that the condensate drain pan(s) is clean.
Every Six Months
Check that there are no bubbles in the sight glass after 10 minutes of compressor operation.
See Startup - Adjustments.
Check the compressor discharge temperature.
Every Twelve Months
Check for blower bearing wear.
Grease any blower bearings that are equipped for lubrication.
• Use a high quality grease for HVAC applications.
• Do not over-grease. Add grease until just a little oozes out from the bearing shield.
Check the condensate drain pan for any accumulated residue. Clean as necessary.
Check the air heat transfer coils for dirt and/or trash.
• If the coils are dirty
Δ Clean the coils with a solution of mild soap in warm water. Do not use corrosive cleaning agents.
Δ Increase the frequency of filter replacement. Dirty filters leak dirt onto the coils.
In the event of an extended shutdown, contact Dectron for a copy of Appendix M4 - Storing Units.
Operation Maintenance
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