Additional Refrigerant Insertion; Confi Rmation Of Tank - Hitachi RCUE40AG2 Service Manual

Maintenance

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.

CAUTION
6.11.1. Confi rmation of tank
The same structure as conventional tank.
Do not add refrigerant while being stand
pag. 172
SMGB0003 rev.0 - 11/2006
Refrigerant should be added in liquid state not in gas state.
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Confi rm if the tanks are specialised for R407C.
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The tank should be set so that refrigerant can be added in gas state.
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The valves or hose for charge should be specialised for R407C.
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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.
<no siphon pipe>
Painting color:
R407C: Brown
Tank specialized for R407C
<with siphon pipe···Label attached>
Siphon pipe
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.
It is possible to add refrigerant while being stand