Samsung MH052FUEA Service Manual page 190

9-3 Refrigerant Refill
Refill an air conditioner with refrigerant when refrigerant has been leaked at installing or using.
1) Purge air(for new installation only).
2) Turn the 3 way valve clockwise to close,
connect the pressure gauge (low pressure side)
to the service valve, and open the 3 way valve
again.
3) Connect the tank to refill with refrigerant.
4) Set the unit to cool operation mode.
5) Check the pressure indicated by the pressure
gauge(low pressure side).
* Standard pressure should be 8.0~9.0kg/cm
in a regular and high operation mode.
6) Open the refrigerant tank and fill with refrigerant
until the rated pressure is reached.
* It is recommended not to pour the refrigerant
in too quickly, but gradually while operating a
pressure valve.
7) Stop operation of the air conditioner.
8) Close the 3 way valve, disconnect the pressure
gauge, and open the 3 way valve again.
9) Close the cap of each valve.
Samsung Electronics
RJ040F2HXEA/RJ050F2HXEA
2
RJ060F3HXEA
RJ070F4HXEA
RJ080F4HXEA
RJ100F5HXEA
Compound
gauge
For mounting
other and of
hose when
not in use
Suspension hook
High
pressure
gauge
Hand
wheel
Finger tight
fittings
Connected to
high pressure
side
Charging line
9-5