LG GR-L247ER Parts List And Instructions Manual page 74

TROUBLE DIAGNOSIS
items Precautions
4.Vacuum degessing.
Pipe Connection
Evaporator
Suction
pi_
CompreSsor
Drier
Low
prBssure High
pr_'ssure
Yellow
Connect a red hose to the high pressure side and a blue hose to the
low pressure side.
Vacuum Sequence
Open (_, (_ valves and evacuate for 40 minutes. Close veive 0.
KEYPOINTING
- If power is applied
during vacuum
degaesing, vacuum
degassing shall be
more effective.
- Operate compressor
while charging
refrigerant. (It is
easier and more
certain to do like
this.)
5.Refrigerant charging.
Charging sequence
1) Check the amount of refrigerant supplied to each model after completing vacuum
degassing.
2) Evacuate bornbe with a vacuum pump.
3) Measure the amount of refrigerant charged,
- Measure the weight of an evacuated bornbe with an electronic scale.
- Charge refrigerant into a bombe and measure the weight. Calculate the weight of
refrigerant charged into the bombe by subtracting the weight of an evacuated bombe.
E_- Indicate the weight of
an evacuated bornbe Rt3,a
KEYPOINTING
- Be sure to charge
the refrigerant at
around 25°C.
- Be sure to keep -Sg
in the winer and
+5g in summer
Calculation of amount of refrigerant charged 1
the amount of refrigerant charged= a weight after charging -
a weight before charging (a weight ef an evacuated cylinder)
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