MOVIN
COOL
24HFU / 24HFU-1 SERVICE
PAGE 46
REPAIR - INSPECTION AND REPAIR OF REFRIGERANT SYSTEM
(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.
WARNING
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.
■
Charging with Refrigerant for Gas Leak Check
5-3-5.
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 refriger-
ant recovery machine.
NOTE
Keep the high pressure valve and the low pres-
sure valve of the gauge manifold closed.
(2) Using procedure 5-3-2., evacuate the
system until the low pressure gauge
indicates 750mmHg (30in.HG) or
greater. (For 15 minutes or more.)
(3) After evacuation is complete, close
the high and the low pressure valves
of the gauge manifold.
CAUTION
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.
5-4.
Refrigerant Charging Work
■
Evacuation (Repeat)
■
Evacuating Air Inside Charging Hose
WARNING
Do not attempt any repair on a charged system.
5-4-1.
Refrigerant Charging
(1) Remove the charging hose (green)
from the vacuum pump, and connect
it to the refrigerant cylinder (R-22).
(2) Loosen the nut on the gauge manifold
side of the charging hose (green).
Open the valve of the charging hose
(green). Open the valve of the
refrigerant cylinder.
