One. From the discharge valve bypass hole filling compressor is Freon liquid direct injection system. The utility model has the advantages of fast and safe infusion, is applicable to the system and no coolant is pumped through a vacuum, which is suitable for the first infusion. It depends on the system between CFCs and cylinder pressure difference and the height difference of itself into the system. If you use this method of Freon vapor perfusion. Then the injection volume is very small, only to pour the liquid poured as much and quickly. But in the bottle of Freon filling is not complete, when the system pressure is higher than the 3KG/MC2 to stop on the high-pressure side of the filling, if insufficient filling can be replaced by the suction side filling, from the high voltage side filling freon, do not start the compressor, in order to avoid the accident.
. from the compressor suction valve bypass hole filling: from the low pressure side of the compressor filling freon gas, to start the compressor, not the liquid refrigerant injection, lest machine liquid hammer. This method is applicable to system deficiencies need to fill the filling quantity. The usually used in China's general business or dining room is small freon refrigeration system is by unit, high-pressure part of most in the factory had been filling Freon. Therefore, the majority of small devices need to replenish refrigerant Freon line.
Through the above explain in detail, let us know what water cooled screw chiller refrigerant filling method, we can through some practical problems and corresponding selection. It not only can improve our ability to work, also can let us in the operation of the machine very easily.