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4.6.4 Refrigerant Charge
Charge specified amount of refrigerant after vacuuming and dehydration. Confirm the specified charge
amount of refrigeration indicated on model name plate.
1. Place R134a cylinder on digital scale and connect hose to manifold gauges and purge air inside the
hose. Record weight of R134a cylinder.
2. Charge liquid refrigerant from port ④.
(All specified charge amount of refrigeration can not be charged.)
3. By operating unit, charge gaseous refrigerant from port ① for the rest of specified charge amount of
refrigerant.
Close cock of R134a cylinder after completion of charging.
①
CAUTION
Do not charging liquid refrigerant from port ①. That causes malfunction of the compressor.
④
R134a
Liquid charging
R134a
Gaseous charging
4-11
Digital scale
032.3
Digital Scale
029.3
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