Quest
Powe
rDry 1300
Installation, Operation and Maintenance Instructions
7
www.QuestOnTheJob.com
Refrigeration system
1-866-933-7486
Quest PowerDry 1300
Installation, Operation and Maintenance Instructions
quest
quest
6. Service
WARNING: Servicing the Quest PowerDry 1300 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.
CAUTION: Do not operate unit without the front housing in place.
6.1 Technical Description
The Quest PowerDry 1300 uses a refrigeration system similar to an air conditioner’s to remove heat and
moisture from incoming air and to add heat to the air that is discharged.
Hot, high pressure refrigerant gas is routed from the compressor to the condenser coil. The refrigerant is
cooled and condensed by giving up its heat to the air that is about to be discharged from the unit. The
refrigerant liquid then passes through a filter/drier and capillary tubing which cause the refrigerant pressure
and temperature to drop. It next enters the evaporator coil where it absorbs heat from the incoming air and
evaporates.
The evaporator operates in a flooded condition, which means that all the evaporator tubes contain
liquid refrigerant during normal operation. A flooded evaporator should maintain constant pressure and
temperature across the entire coil, from inlet to outlet.
The mixture of gas and liquid refrigerant enter the compressor after leaving the evaporator coil. The
compressor evacuates the cool refrigerant gas from the accumulator and compresses it to a high pressure and
temperature to repeat the process.
6.2 Troubleshooting
No dehumidification, neither hour meter display nor compressor run and POWER button does not turn
ON.
1. Unit unplugged or no power to outlet
2. Defective control board
3. Loose connection in internal wiring
No dehumidification, neither hour meter display nor
compressor run with POWER button ON.
1. Defective control board
2. Loose connection in internal wiring
Some dehumidification, air mover runs continuously but
compressor only runs sporadically.
1. Unit is in defrost cycle, DEFROST light on
2. Defrost thermistor defective or loose
3. Loose connection in compressor circuit
4. Defective compressor overload
5. Defective compressor
6. Defective relay
7. Upper housing is not sealed to lower housing
