If you are retrofitting HCFC system to HFC system HVAC triple procedure will not remove oil or sludge from the system.
Why HVAC Triple Evacuation is Always Best Method for Refrigeration Evacuation HVAC triple HVAC triple Before I get into the procedure for HVAC triple evacuation let us explore why evacuation is always the best way to evacuate refrigeration system over other methods.
Vacuum Pump - again as with the nitrogen the capacity of the pump will depend on the size of the system being evacuated.. refrigeration vacuum pump refrigeration vacuum pump HVAC Triple Evacuation - brief inspection of the system should be made to make sure everything is completed and installed properly.
I allow this new nitrogen charge to remain in the system for 10 to 15 minutes checking the pressure and then allow it to purge out of the system again watching the pressure so when it hits zero I reintroduce the vacuum pump to the system and pull deep vacuum..
Then allow it to purge out of the system again watching the pressure so when it hits zero I reintroduce the vacuum pump to the system and pull deep vacuum..
Once that final vacuum has been pulled and it holds at 500-microns for more than 15 minutes then I release the refrigerant charge into the system and perform proper startup of HVAC system whether it's heat pump or conditioner.
In fact, I have been behind other technicians who replaced burned out compressor only to have their replacement compressor burn out in period of time after the replacement and I did job of flushing the system and doing HVAC triple evacuation and I have never had call back for burnout..
That is either evaporating the moisture with the vacuum pump or force purging the moisture out of the system with the nitrogen pressure..
Me Thinks of Old Axiom Do Job Right First Time so there will be No Second Time.
*When performing HVAC triple procedure always follow the manufacturer's recommendations and never exceed the rated pressure for the system..
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