Maintenance and Service
18
DryCool HD Operator and Maintenance Manual
P00960167-1
5. Maintenance and Service
5.1. Standard Air Filter
The DRYCOOL™ HD is equipped with air filters. These filters should be checked every three months.
Operating the unit with a dirty filter will reduce dehumidifier capacity and efficiency and may cause the
compressor to cycle off and on unnecessarily based on, or due to, high level pressure.
Under normal circumstances, filters in the unit should be cleaned or replaced quarterly or as labeled. A clean
filter is necessary to prevent damage to the dehumidifier and allow it to function at full capacity. To remove the
filters, first unplug or de-energize unit, then remove filter(s). To clean properly, flush with warm water and a
mild detergent solution or replace filter with new one. The filter sizes are 14 x 14 x 1 (process), 14 x 16 x 1
(reactivation) and are available from most local HVAC contractors. Once completed, return power/energize unit
and make sure all panels are tightly closed.
To access the air filter, slide the filter out of the side of unit. The filters can generally be vacuumed clean
several times before needing replacement. Replacement filters can be purchased locally. DO NOT operate the
unit without a filter. The heat exchange coils inside the unit could become clogged and require disassembly to
clean.
5.2. Electronic Filter
The Polorized Electronic Air Filer uses a common 24V terminal for connection purposes. If necessary, an
optional accessory transformer is availble to plug into any 110V (AC) outlet to provide 24V (AC) power to the
unit. Please follow all specific instructions as provided by the manufacturer/vendor.
NOTE
: Do not substitue any other 110VAC-24VAC transformers as damage could result to the units
electronics.
Installation of this filter should be done by a qualified electrician as
electrical wiring is required. Whenever installing or removing the filter, the
power to the unit should be turned off/de-energized and only returned once
task is completed.
5.2.1. Cleaning and/or Replacement Procedures
Filters or media pads should be cleaned and/or replaces depending upon household contaminant conditions. The
suggestion is after the first months use they should be cleaned or replace after initial cleanup of contaminants.
Filter can then be place on a regular maintenance schedule as required. Please follow the procedure listed
below.
Turn the thermostat fan switch to the “OFF” position.
Turn off/de-energize power to unit.
Open filter access door or grille.
Unplug the power supply cord from the air cleaner powerhead.
Open air cleaner and remove old filter/media pad and discard.
If dust has accumulated on outer screen of DH unit, clean with a dry brush or vacuum.
Replace new filter/media pad within center of frame.
Close air cleaner grille/door.
Return air cleaner to location in DH unit or return air grille.
Return power to air cleaner once installed securely.
Close filter access door or grille.
Turn thermostat fan back to the “ON” position. (For optimum results, DH unit should be run
continuously with the fan switch in the ON position, rather than the “AUTO” position.
Because of variations in humidity and temperature, the new filter/media pad may make a slight snapping sound
when first installed. This is normal and should stop and return to normal within 24 hours of operation.
