Jon-Don R340 - User Manual

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Owner’s Manual — R340

Installation, Operation & Service Instructions

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The R340 LGR Dehumidiﬁer

R-410A Refrigerant - The R340 comes charged

with R-410A refrigerant.

Capacity - The R340 removes 145 pints per day at AHAM

(80°F/60%RH).

Energy Efciency - Draws only 9.2 amps and removes 5.6 pints/

kWh.

Compact Design - Smaller, 20”x20”x33.5”

Motorized Impeller - 310 CFM; Faster drying and superior static

pressure for ducting.

More Grain Depression - Drier air from an LGR nishes jobs

quicker versus a conventional refrigerant dehumidier.

Focused Airow - Patent focused outlet directs air downward

across the wet surface.

Multiple Ducting Options - 12” intake, 10” exhaust.

Rugged Roto-Molded Housing.

Solid State Controls - Easy to read and operate.

Protected Condensate Hose - Located under the top cover. Quick

connect, cannot catch or be damaged on obstructions.

Telescoping Handle - A heavy-duty retractable handle for ease of

transport and reduces space for storage and stacking.

Recessed 12” Wheels - Allows greater maneuverability on the job

site and efcient storage. Rolls over obstacles with ease.

Pleated Media Air Filter - A 2”x12”x12” MERV-11 lter is

standard.

Stacking/Nesting - Reduces space for ease of stacking and

storage.

Speciﬁcations subject to change without notice.

TS-851

11/13

R340

# OE-R340-EA

Patent 7,246,503

D570,988

8,069,681

The R340 is an Advanced Technology LGR dehumidier that

removes 145 pints per day (AHAM) in a compact design while

drawing only 9.2 amps of electricity. The R340 outperforms

other EXTRA LARGE (XL) category dehumidiers by removing

more water, providing larger grain depression and being more

energy efcient. The advanced LGR design is surrounded by

a durable roto-molded high impact plastic housing to create a

dehumidier that is smaller and lighter than competitive units.

The term LGR (Low Grain Refrigerant) was created to describe

the unique drying capabilities of producing substantially drier

air, and the ability to dry areas to much lower humidity levels

than conventional dehumidiers. The Advanced Technology

LGR innovations of the R340 takes the next steps of even

more grain depression and water removal in a compact,

energy efcient design.

The World Leader in Carpet Cleaning, Restoration and Janitorial Supplies 1.800.556-6366

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The Jon-Don R340 is an Advanced Technology Low Grain Refrigerant (LGR) dehumidifier designed for efficient and compact moisture removal in various environments, particularly for carpet cleaning, restoration, and janitorial applications. It is engineered to outperform other extra-large (XL) category dehumidifiers by providing superior water removal, greater grain depression, and enhanced energy efficiency.

Function Description

The R340 operates on a refrigeration system similar to an air conditioner. It removes heat and moisture from incoming air and adds heat to the discharged air. Hot, high-pressure refrigerant gas from the compressor is routed to the condenser coil, where it is cooled and condensed by transferring its heat to the air about to be discharged from the unit. The refrigerant liquid then passes through a filter/drier and capillary tubing, causing a drop in pressure and temperature. It then enters the evaporator coil, where it absorbs heat from the incoming air and evaporates. The evaporator operates in a flooded condition, meaning all evaporator tubes contain liquid refrigerant during normal operation, maintaining constant pressure and temperature across the entire coil. The mixture of gas and liquid refrigerant then enters the accumulator, which prevents liquid refrigerant from reaching the compressor. The compressor then draws the cold refrigerant gas from the accumulator, compresses it to high pressure and temperature, and restarts the cycle.

The term LGR (Low Grain Refrigerant) describes the R340's unique drying capabilities, enabling it to produce substantially drier air and achieve much lower humidity levels than conventional dehumidifiers. This advanced LGR design allows for quicker job completion due to more grain depression and efficient water removal.

Important Technical Specifications

Refrigerant: R-410A
Capacity: 145 pints per day at AHAM (80°F/60%RH)
Energy Efficiency: Draws 9.2 amps, removes 5.6 pints/kWh
Airflow: 310 CFM (Cubic Feet per Minute) via a motorized impeller
Power: 9.2 amps, 120 VAC, Grounded
Operating Range: 33°F to 110°F
Filter: 2"x12"x12" Pleated Media MERV-11 filter (standard)
Dimensions (Unit): 20" (Width) x 20" (Depth) x 33.5" (Height)
Weight (Unit): 115 lbs
Duct Options: 12" intake, 10" exhaust (flexible duct without armature)
Housing: Rugged roto-molded high-impact plastic
Condensate Pump: Internal, automatically purges every 8 minutes, can pump condensate 20 feet above the unit.
Float Safety Switch: Activates when condensate reservoir water rises too high, turning off the compressor until water levels drop.
Warranty:
- Year One: 100% on parts and labor for defects in materials and workmanship.
- Years Two Through Five: 100% on sealed refrigeration system parts (condenser, evaporator, compressor); labor and transportation charges borne by end-user.
- Years One Through Seven: Materials and workmanship of the housing.

Usage Features

Compact Design: Smaller and lighter than competitive units, measuring 20"x20"x33.5".
Focused Airflow: Patent-pending focused outlet directs air downward across the wet surface for more effective drying.
Solid State Controls: Easy to read and operate for user convenience.
Protected Condensate Hose: Located under the top cover, quick-connect design prevents catching or damage on obstructions.
Telescoping Handle: Heavy-duty retractable handle for easy transport and reduced space during storage and stacking.
Recessed 12" Wheels: Allows for greater maneuverability on job sites, easily rolling over obstacles, and efficient storage.
Stacking/Nesting: Designed to reduce space for ease of stacking and storage.
Electrical Requirements: Plugs into a common grounded 15A circuit. A Ground Fault Interrupter (GFI) is required if used in a wet area. For extension cords, minimum 14-gauge conductors for 25 feet or less, and 12-gauge conductors if greater than 25 feet.
Defrost Cycle: If refrigerant temperature drops below the defrost set point due to excessive frost on the evaporator coil, the thermistor activates the solid-state controls and the defrost light. The compressor cycles off, while the impeller continues to run, melting the ice. The cycle ends when air temperature and/or humidity increases, and the evaporator temperature reaches its set point.
Control Panel: Features POWER button (on/off), HOURS button (displays and resets job hours), PURGE button (manual condensate reservoir emptying), and DEFROST light.
Hour Meter: Digital display shows operating time to the tenth of an hour, cycling between total machine hours and job hours every 3 seconds. Hours are stored in memory even when unplugged. Job hours can be reset by pressing and holding the HOURS button for 5 seconds while the unit is operating.

Maintenance Features

Air Filter: Equipped with a pleated media MERV-11 high-efficiency air filter that must be checked regularly. A dirty filter reduces capacity and efficiency, potentially forcing the unit into unnecessary defrost cycles. The filter can be vacuumed clean multiple times before replacement. Operating the unit without a filter or with a less effective filter can clog the heat exchanger and coils, requiring disassembly for cleaning.
Storage: Before storage, it is crucial to remove as much trapped water as possible to prevent damage from freezing or biological growth. This involves using the PURGE button to reduce the water level in the reservoir and walking out the hose to drain it completely. To reduce biological growth, flush the unit with an approved biofungicide compatible with copper, aluminum, polyethylene, and ABS. This flushing procedure involves running the hose to a drain, plugging in the unit (without turning it on), slowly pouring a pint of chemical through the top to drain into the heat exchanger, using the PURGE button until the hose runs dry, walking out the hose to drain completely, and finally replacing the air filter.
Service: Servicing the R340, with its high-pressure refrigerant system and high-voltage circuitry, presents health hazards. Only qualified service personnel should service this unit. Do not operate the unit without the front housing in place.
Troubleshooting: The manual provides detailed troubleshooting steps for various issues, including:
- No dehumidification (no hour meter display, compressor not running, power button not lit, or power button lit).
- Partial dehumidification (impeller running, but compressor not).
- Impeller not running (compressor runs briefly, then stops).
- Unit removes some water, but less than expected.
- Unit runs but does not pump water.
- Unit pumps water automatically, but not when PURGE button is pressed.
- Evaporator coil is constantly frosted, low dehumidification capacity.
- Compressor runs with power button off.
- Detailed instructions for replacing components like the air mover, thermistor, condensate pump, and float safety switch are provided.