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3) Charge of refrigerant
Stop vacuum pump operation.
Open the valve of tank to charge refrigerant
with approx. 0.2~0.5 Mpa/G.
4) Pipe pinching in High pressure side
Charge refrigerant until pressure is
reached to 1.6MPa/G.
Close the valve of tank.
Hold charging pipe by pliers to pinch it off
by pinch pliers. (See picture f.)
Pinch pliers
5) Charge refrigerant in Low pressure side
Open the valve again to charge refrigerant
in Low pressure side.
Charge until you can ensure pressure should
be 0.1 Mpa/G with unit running.
Turn the tank upside down to charge
refrigerant without remains. (See picture-g.)
6) Pinching pipe
Measure the weight of tank after charged.
Form the pipe which was pinched off.
Apply welding to the points of
pipe which were pinched to prevent
being broken.
e.
f.
g.
h.