The modulation system functions to control the box temperature of fresh perishables without excess heating or cooling. It improves the humidity and temperature conditions desirable…

When a unit is inoperable or the compressor will not function, the refrigerant must be removed as a vapor. It can be removed from almost…

If a unit is operable and the compressor functions, the refrigerant should be removed as a liquid. This is the fastest and most efficient method.…

The suction line filter is designed for use when major system contamination has occurred as defined in TK 40229, “Clean-up of Refrigeration Systems with Thermo…

Refrigeration systems that have had service performed with the system open to the atmosphere must be evacuated and dehydrated to remove air and moisture that…

Leak check solutions are generally acceptable in areas that are easily reached or where the air is saturated with refrigerant. However, several factors determine how…

Diagnosis Unit lacks heat/defrost capacity. Service Procedure 1. Test the pilot solenoid and 3-way valve for proper operation. 2. Check refrigerant charge. 3. Perform compressor…

Gauge Removal Preparation 1. Remove the high side gauge line from the discharge Schrader port. 2. Backseat the suction service valve and then crack open…

The scroll compressor can not be pumped down to check the efficiency of the compressor. Use the following procedure. Diagnosis This procedure checks loss of…

Diagnosis This procedure combines the functions of the 3-way Valve Heat Check and the Low Side Pump down. A high side pump down procedure will…