Service manual

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GB
TUBE SIZE TORQUE
Liquid line 1/4” 1 5 - 2 0 N.M.
Suction line 3/8” 3 0 - 3 5 N.M.
Suction line 1/2” 50 - 5 4 N.M.
Suction line 5/8” 75 - 7 8 N.M.
EVACUATION OF THE REFRIGERATION TUBES AND THE INDOOR UNIT
After connecting the unions of the indoor and outdoor units,evacuate the air
from the tubes and indoor unit as follo�s:
1. Connect the charging hoses �ith a push pin to the lo� and high sides of the
charging set and the service por ts of the suction and liquid valves.
Be sure to connect the end of the charging hose �ith the push pin
to the service ports. 2.Connect the center hose of the charging
set to a vacuum pump.
3. Open Fully the lo� and high pressure sides of the manifold gauge valves.
4. Turn on the vacuum pump.Per form evacuating for at least 30 minutes and
than confirm that the needle in the gauge moves from 0 MPa(Ocm Hg) t 0 -
0 . 1 MPa(-76cm Hg).
5. Close the valves of the lo� and high sides of the charging set and turn off the
vacuum pump. After fe� m inu t e s , if the gauge needle has moved,there is a
leak �hich must be found and repaired before moving to the next stage.
Tightening torques
of unions and
valve caops:
Tightening torques
of unions and
valve caops:
Fig 13 To prevent refrigerant
leakage,coat the flared
surface �ith refrigeration
oil
Fig 14 1.Suction valve 2.Service
port 3.Liquid valve