Storage; Service; Warranty; Technical Description - Jon-Don Ultimate 340 Owner's Manual

3.2 Storage

There are two issues to consider when the Ultimate 340 is
stored between uses and both pertain to the water trapped
in the unit: damage caused by freezing or 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 & Fig. 4) to
reduce the water level in the reservoir.
2. Stretch the hose flat to drain it completely. Raise one
end above your head and spool to drain water out of the
other end.
If the unit will not be exposed to freezing temperatures, an
alternative 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 heat exchanger
4. Hold in the pump purge switch to reduce the water level
in the reservoir.
5. Flush with water.

4 Service

CAUTION: Servicing the Ultimate 340 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.

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 Jon-Don at 1-800-556-6366 for warranty claim
authorization and technical assistance.

4.2 Technical Description

The Ultimate 340 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 (see Fig. 2).
Toll-Free 1-800-556-6366
Figure 2: Refrigeration system
Hot, high pressure refrigerant gas is routed from the
compressor to the condenser coil (see Figure 2). 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
accumulator after leaving the evaporator coil. The
accumulator prevents any liquid refrigerant from reaching the
compressor. The compressor evacuates the cool refrigerant
gas from the accumulator and compresses it to a high
pressure and temperature to repeat the process.

4.3 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
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