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3 Operation
Place dehumidier inside structure, place
condensate hose into a drain, or a large water
tight container, and turn on. To decrease
drying times, make sure all windows and
doors are closed to the outside and seal off
the affected wet areas from unaffected areas.
Optimum performance will be observed
between the temperatures of 70°F and 95°F.
3.1 Transporting
The R340 features a high impact roto-molded housing with
12” recessed wheels and a telescoping handle. The rugged
roto-molded housing protects the dehumidier from damage.
The 12” wheels provide greater maneuverability and roll over
obstacles with ease. The telescoping handle and recessed
wheels create a compact dehumidier for improved storage
and transport. To operate the telescoping handle, pull
out the lever to release the lock and lift the handle until it
locks in the up position. Repeat to lock the handle in the
down position. More compact storage can be achieved by
stacking the units two high. The wheels of the unit ‘nest’ in
the indentations of the bottom unit to provide stability, see
gure 1. It is recommended the units are properly secured
for transport. The R340 must always be upright when
transported by vehicle. It may be tipped onto its handle and
back for loading and moving by hand.
3.2 Electrical Requirements
The R340 plugs into a common grounded outlet on a 15
amp circuit. It draws 9.2 amps at 80°F, 60% RH. If used
in a wet area, a ground fault interrupter (GFI) is required. If
an extension cord is required, it must have a minimum of
14 gauge conductors if 25 feet long or less and 12 gauge
conductors if greater than 25 feet long.
3.3 Condensate Removal
The R340 is equipped with an internal condensate pump to
remove the water that is condensed during dehumidication.
This pump allows the condensate to be pumped 20 feet
above the unit with the attached hose. If the condensate
must be pumped more than 20 feet above the unit, a relay
pump must be added. The condensate pump automatically
purges for 20 seconds every 8 minutes. Use the PURGE
button to empty reservoir. If the condensate level rises in the
reservoir to a critical level a back-up oat switch will activate
the pump-out for up to 1 minute. If the water in the reservoir
fails to be evacuated, the safety switch will turn off the
compressor.
3.4 Ducting
A wire duct collar is supplied to allow 10” lay-at duct to
be attached to the R340 outlet. Lay-at plastic ducting is
available (see accessories in section 6). Attach ducting to the
wire duct collar by inserting the plastic duct end through the
collar center and rolling the duct end outward to overlap the
Figure 1: Stacked
R340
outside of the collar. The duct and collar may then be quickly
attached to the R340 by snapping the collar over the four
plastic exhaust tabs.
If the R340 is located in the unaffected area, the intake can
be ducted with 12” ex duct (see accessories in section 6).
Attach the ex duct to the top cover by hooking the spiral
wire under the four tabs. Tape the duct to the top cover for a
complete seal.
3.5 Defrost Cycle
If the low side refrigerant temperature drops below the
defrost set point, due to excessive frost formation on the
evaporator coil, the thermistor activates the solid-state con-
trol and the defrost light. The control cycles the compressor
“off” and “on” by the thermistor temperature measurement.
The air mover will continue to run, causing air to ow through
the evaporator coil and melt the ice when the compressor is
off. When the air temperature and/or humidity increases, the
evaporator temperature will rise and the thermistor will end
the defrost cycle at the defrost set point.
3.6 POWER Button
Press the POWER button to turn the dehumidier “on” or
“off”. When starting the dehumidier the display will show
the accumulated hours. Press the POWER button again to
turn the dehumidier off. The display will also power off.
3.7 PURGE Button
During normal operation the pump automatically cycles every
8 minutes. Press the PURGE button to remove condensate
manually from the reservoir. There are three ways to
manually remove water from the reservoir:
1. Press the PURGE button once and the pump will run for
20 seconds
2. Press and hold the PURGE button and the pump will run
for up to 30 seconds
3. Press the PURGE button while the dehumidier is
plugged in but powered off and the pump will run for 30
seconds.
Always manually purge the water reservoir before transport
or storage. Turn off the power and allow the plugged in
dehumidier to rest 15 minutes before the nal purge.
Figure 2: R340 control board.
