6.11. Additional refrigerant insertion
6.11. Additional refrigerant insertion
6.11. Additional refrigerant insertion
According to the refrigerant characteristics, the followings should be taken into account.
Refrigerant should be added in liquid state not in gas state.
Confi rm if the tanks are specialised for R407C.
The tank should be set so that refrigerant can be added in gas state.
The valves or hose for charge should be specialised for R407C.
6.11.1. Confi rmation of tank
1. Paining color is different from types of refrigerant. And a mark stamped in
inspection also serves for the confi rmation of refrigerant .
2. The refrigerant tank has two specifi cations as shown in the below. In any case,
liquid refrigerant should be added.
The same structure as conventional tank.
<no siphon pipe>
Tank specialized for R407C
<with siphon pipe···Label attached>
Do not add refrigerant while being stand
It is possible to add refrigerant while being stand
If the edge of siphon pipe becomes
above the superfi cies of liquid
refrigerant, it should take gas out.
It is convenient to use manifold
valve with sight glass to confi rm if
refrigerant is added in liquid state.
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