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RapiDefrost is a same-direction, hot gas defrost method that can be used to replace all types of defrost systems, including reverse-flow, three-pipe, or the highly inefficient electric defrost. It is typically installed at the condensing unit, which offers significant advantages for the servicing technician.

What it does

RapiDefrost applies hot vapor refrigerant directly to the inlet portion of the evaporator where it is needed most. This creates a defrost period that is thorough, short and efficient. Unlike reverse-flow defrost methods, the RapiDefrost valve encourages oil return, which enhances lubrication to extend compressor life and increases useable evaporator surface area to improve heat transfer. And the instability of typical three-pipe systems, which puts compressors at risk from refrigerant overfeed, is reduced through the use of X-stream technology in the RapiDefrost valve.

How it works

RapiDefrost increases efficiency in systems with hot gas defrost. Instead of using a four-way reversing valve, which operates like a heat pump, RapiDefrost uses solenoids. It uses the same refrigerant line piping to transport the hot gas to the beginning of the coil where the need for defrost is the greatest and oil is encouraged to return. It doesn't require additional piping and can operate with a one-to-one compressor to evaporator ratio.

The system is activated through a hot gas defrost solenoid that is normally located by the system defrost clock or module and is terminated by a suction line thermostat. This method assures a clear evaporator by mandating a specific return temperature and not depending on an evaporator mounted sensor.

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XDX improves the performance of:

Low Temp Equipment

Blast Freezers
Display Freezers
Reach-in Freezers
Storage and Walk-ins

Med/High Temp Equipment

Air Conditioning
Deli Service Counters
Rack Systems
Reach-in Coolers
Refrigerated Cases
Refrigerated Display Cases
Refrigerated Drink Machines
Shell & Tube Evaporators
Walk-In Coolers