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Asset Protection and IAQ Solutions
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1-800-533-7533
HI-E DRY 195
Installation, Operation and Maintenance Instructions
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3.3 Defrost Control Adjustment
When the HI-E Dry 195 is used in a cool area, frost will form on the cooling coil as it dehumidifies. When
enough frost forms, the defrost thermostat will initiate the timed defrost cycle. The cycle periodically turns
off the compressor while allowing the blower to run. The air that the blower draws through the cooling coil
melts the frost.
The defrost cycle is automatic and designed for optimum performance above 50°F.
3.4 Low Pressure Control
If the low side refrigerant pressure drops to 35 PSIG, the low pressure control opens and shuts off the
compressor and blower. It is an automatically reset control that will close when the pressure rises to 60
PSIG. Its primary function is to prevent damage to the compressor if a leak develops in the refrigeration
system. It may also open if the unit is A) used in a cool area (below 50°F) and the defrost timer is not
adjusted (see Sec. 3.3) or B) stored where it is below 40°F and then started. Under these conditions, the unit
will restart within several minutes. Until the unit warms up, it may cycle several times.
4.Maintenance
4.1 Air Filter
The HI-E Dry 195 is equipped with two 2” thick, MERV 8 pleated fabric air filters that must be checked
regularly. Operating the unit with dirty filters will reduce the dehumidifier’s capacity and efficiency and may
cause the compressor to cycle off and on unnecessarily on the defrost control.
The filter can generally be vacuumed clean several times before needing replacement. Replacement filters
can be ordered from the factory or purchased locally if available. DO NOT operate the unit without the filter
or with a less effective filter as the heat exchange coils inside the unit could become clogged and require
disassembly to clean.
5. Service
CAUTION: Servicing the HI-E Dry 195 with its high-pressure refrigerant system and high voltage circuitry
presents a health hazard which could result in death, serious bodily injury, and/or property damage. Only
qualified service people should service this unit.
5.1 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.
5.2 Technical Description
Refer to Figure 3. The HI-E Dry 195 uses a refrigeration system similar to an air conditioner’s to remove heat
and moisture from incoming air, and add heat to the air that is discharged.
