Charging method of R407C refrigerant in air conditioner

As a non-azeotropic mixture of R407C refrigerant in air conditioners, when charging, leaking, blocking or improper operation management, the composition will change, which will inevitably affect the performance of the system. The following will introduce several charging methods for everyone: The general R407C refrigerant cylinder structure has two charging ports. One is the direct filling port. It has a tube that goes straight to the bottom, but it cannot reach the bottom to prevent impurities at the bottom from following the refrigerant into the system when the vertical refrigerant bottle is filled. The other is a short filling port, which extends a certain distance from the top of the refrigerant bottle to prevent impurities and refrigerant from entering the system when the inverted refrigerant bottle is filled. 1. Air conditioner R407C refrigerant horizontal charging method When charging the R407C refrigerant bottle horizontally, use a shorter charging port instead of a direct charging port. R407 refrigerant enters the system directly from the short charging port. Due to the gravity of the R407 refrigerant, the horizontal charging speed is faster, but there is a certain amount left in the bottle that cannot be charged. This method is used for charging. When filling, the short filling port must be closest to the ground, not above the filling port.

2. Inclined charging method of air conditioner R407C refrigerant When the refrigerant bottle is charged obliquely (30~45℃ from the ground), a short charging port should also be used. Because the liquid R407C refrigerant enters the system directly from the short filling port; if the direct filling port is used, the refrigerant is filled in liquid when the bottle is full, and the refrigerant is discharged as a gas when the refrigerant is lower than the inner tube of the direct filling port. Due to the gravity of the refrigerant itself, the inclined filling speed is faster, and the refrigerant in the bottle can basically be filled. The impurities in the bottle sink at the corner of the bottle mouth and will not be brought into the system, but certain tools are required for lifting. (Recommended Use). Have you learned the two charging methods of R407C refrigerant for air conditioners?

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