Denso MOVINCOOL CLASSIC PLUS 26 - Manual (Page 45)

TROUBLESHOOTING AND REPAIR
37
D. Checking Gas Leak
(1) Remove the charging hose (green) from
the vacuum pump, and connect the hose
to the refrigerant cylinder (R22).
(2) Loosen the nut on the gauge manifold
side of the charging hose (green).
(3) Open the high pressure valve of the
gauge manifold. Charge the system with
refrigerant until the low pressure gauge
indicates 57 PSIG. (4 kg/cm
2 G.) After
charging is complete, close the high
pressure valve.
(4) Check carefully for gas leaks inside the
refrigerant system using the gas leak
tester.
(5) Repair any leak.
ƽWARNING: Do not attempt any repair on a
charged system.
Charging with Refrigerant for Gas Leak Check
Evacuation (repeat)
ƽWARNING: Before checking for gas leaks, fully
confirm that there is nothing flammable in the
area to cause an explosion or fire. Contact of
refrigerant with an open fire generates toxic gas.
E. Evacuation (Repeat)
(1) Close the valve of the refrigerant cylinder.
Then remove the charging hose (green)
from the refrigerant cylinder, and connect
it to the refrigerant recovery machine.
NOTE: Keep the high pressure valve and the low
pressure valve of the gauge manifold closed.
(2) Using procedure B., evacuate the system
until the low pressure gauge indicates
750mmHg (29.55 inHg) or more (for 15
minutes or more).
(3) After evacuation is complete, close the
high and the low pressure valves of the
gauge manifold.
ƽCAUTION: Be sure to evacuate the system twice
or more using the repetitive vacuum method.
Evacuate the system an additional time on rainy
or humid days.
Evacuating Air Inside Charging Hose