Sunlight Supply Quest PowerDry 4000 Pro Dehumidifier - Manual (Page 7)

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Quest PowerDry 4000 Pro Installation, Operation and Maintenance Instructions
7
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3 Maintenance
3.1 Air Filter
The Quest PowerDry 4000 Pro is equipped with a pleated fabric air filter that must be checked regularly.
The standard filter is a MERV-11 high efficiency filter. Operating the unit with a dirty filter will reduce the
dehumidifier’s capacity and efficiency and may cause the compressor to cycle off and on unnecessarily on
the defrost control.
IMPORTANT: DO NOT operate the unit without the filter or with a less effective filter as the heat exchanger
and coils inside the unit could become clogged and require disassembly to clean.
3.2 Storage
There are two issues to consider when the Quest PowerDry 4000 Pro is stored between uses and both
pertain to the water trapped in the unit: damage caused by freezing and biological growth. The effect of the
trapped water can be greatly reduced if precautions are taken to remove as much as possible before storage.
1. Use the pump purge switch (see Sec. 2.7 and Fig. 4) to reduce the water level in the reservoir.
2. Stretch the hose flat to drain it completely.
If the unit will not be exposed to freezing temperatures, an alternative way to reduce biological growth is
to flush the unit with a bio-fungicide that is approved for use with copper, aluminum and polyethylene. To
flush:
1. Run the hose to a drain.
2. Plug in the unit but do not turn it on.
3. Remove the air filter. Slowly pour a quart of the chemical through the top grille so that it drains into the
black plastic slots.
4. Hold in the pump purge switch to reduce the water level in the reservoir.
5. Flush with water.
4 Service
CAUTION: Servicing the Quest PowerDry 4000 Pro with its high pressure refrigerant system and high
voltage circuitry presents a health hazard that could result in death, serious bodily injury, and/or property
damage. Only qualified service people should service this unit.
4.1 Warranty
A warranty certificate has been enclosed with this unit; read it before any repair is initiated.
If a warranty repair is required, call the factory first at 1-800-533-7533 for warranty claim authorization and
technical assistance.