|
Years ago R12 (liquid state) was used to flush the system. Today there are flushing solvents designed specifically for refrigerant systems.
There are several companies that market flushing solvents, machines and small kits. These products can be purchased through Big Box Auto Stores or through WE'LLBEATEVERYONESPRICEEBUTWEDON'TKNOWJACKBUTWESUR ECANCOPY web sites.
At the low end of the range is your simple aluminum canister (size of thermos bottle) you fill with flush solvent, charge with air and shoot through the system, prices typically under 100 for the canister and hose, and under 30 for a quart. On the extreme end are dedicated machines with solvent, filters, pulsing cycles, etc. , prices starting at 2500 and up.
The basic procedure, with a discharged system, is to disconnect the components, and flush the hoses, evaporator, and condenser(s); you don't flush compressors, driers, accumulators, exp. valves, orifice tubes, solenoids or pressure switches. After flushing you blow out with air and do a deep evacuation.
|