How can I use the Frigitek with pressure-controlled or CPC systems?
Refrigeration systems employing TXV (Thermal Expansion Valve), AXV (Automatic Expansion Valve), or other pressure-controlled regulation of the cooler temperature must be modified to work with the Frigitek. Because the Frigitek must sense some electrical activity to indicate whether the system is in cooling mode or idle, it cannot detect this status in pressure-controlled systems. The easiest conversion to allow installation of a Frigitek is to add a standard thermostat and solenoid valve to the system. This will allow the Frigitek to operate normally, and may even solve some other maintenance problems with the cooling system. The Frigitek is not applicable to CPC systems, or any system which uses modulated or variable expansion valves, unless the system can be converted to standard thermostat / solenoid valve operation. Typically, the CPC systems are used in coolers which require very tight temperature control, and cannot be converted.
