GE PTV15SAMR, Техническое руководство по обслуживанию

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Page 51
XI. SPECIAL EDITION ON MAINTENANCE OF ENVIRONMENTAL PROTECTION
REFRIGERATOR
l. Vacuum extraction for 20
minutes till the valve becomes
the condition of Fig. (11).
m. After the vacuum extraction,
close all the valves.
n. Identify the graduation of the
filling tube.
o. Open LB valve and seal the
required amount of freon
through BC valve.
Seal the required amount of freon through CB valve and
then adjust by the graduation of the filling tube.
p. The condition of valve after
sealing the freon (only LB valve
is left open).
LB
VB
HB
L H
CB
Vacuum pump stops
L H
CB
LB
VB
LB
L H
q. The high pressure gauge
should be over 1.0 kgf/cm
2
G
and then use the sealing
wrench to seal the filling tube
from this end. Then remove
the compound pressure gauge
and seal the front end of the
filling tube.
• When sealing the filling
tube at pressure below 1.0
kgf/cm
2
G, the air may be
sucked in.
r. Run the refrigerator
compressor and push the
freon of the filling tube and
compound pressure gauge
into the system.
• When the low pressure
gauge is pointing at 1.0
kgf/cm
2
G, close LB valve to
stop the compressor.
L H
L H
LB