Page 1129 - Workshop Manual - Aumark (BJ1051)

51-37
Heater and AC-Refrigerant oil

4. Fill refrigerant

More than 20m Place it 5m Pressure
displayed on the
meter is proper Fill in refrigerant Inspection of air leak Fill in refrigerant

pumping;
Start the vacuum
Air tightness inspection
Stop the vacuum pumping
Pressure displayed on
the meter is abnormal
Fill in refrigerant until 0.1Mpa. All of above
should be at gas state.
inspection and correction of
connection part

(a). Connect the yellow charging pipe in the middle of pressure meter with gas service tank of
refrigerant after making sure there is no air leak.
(b). Make sure the nut on air charging valve of service tank is tight. Discharge the air and make
refrigerant flow into circuit. Press the air port on the side of pressure meter by screwdrivingr for
1-2 seconds to discharge refrigerant and exhaust the air from charging pipe and pressure meter.

(c). Open the high pressure valve of pressure
meter and fill in refrigerant from high 51
pressure side circuit. Now Notes the
finger movement of pressure meter and
make sure the fingers of high/low
pressure meter increases stably. Check if
the connection parts of rubber tubes are
loose or if the sealing port is damage,
and repair them if there are.
(d). Close high pressure valve and start the
engine when pressure meter stops
increasing.
(e). Turn AC switch to ON position; turn
switch of temperature control to the
coldest and wind volume of air sending
port to the biggest. Open all doors and
windows, and switch the inside/outside
circulation to inside circulation.

Page 1129