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High pressure side
1.
Connect the process - tube - fitting with the inlet
pipe of dryer by wrenches.
Note:
Do not purge the pipe at high - pressure side
from compressor side so that no deteriorated oil
can flow into the condenser.
2.
Connect the charge cylinder (for HFC-134a)
with the process - tube - fitting.
3.
Place a container at the inlet of discharge pipe
firmly.
4. Open the valve of charge cylinder.
5.
Close the valve of charge cylinder when liquid
come out.
6.
Collect the liquid in the container and see how
stained the discharged liquid (the inside).
Note:
In case that the pressure at the charge cylinder
is low, refrigerator may not come out as liquid.
7.
If the inside is not cleaned yet, repeat purging
until the inside is completely cleaned.
8.
When pipe - cleaning at high - pressure side is
finished, disconnect the process - tube - fitting
from the inlet pipe of dryer.
Low Pressure side
9. Connect the process - tube - fitting with the suction pipe by wrenches.
10. Connect the charge cylinder (for HFC-134a) with the process - tube - fitting.
11.
Open the valve of charge cylinder and pinch - off the end of cappilary tube when the refrigerant start
discharging.
12. Leave it until liquid surface in the glass tube of charge cylinder is stabilized (for approx. 10~20 seconds).
13.
Cut the end of capillary tube with capillary tube cutter and place a container at outlet.
14. Collect the liquid in the container and see how stained the discharge liquid.
15. If discharged liquid is stained, repeat the purging at low - pressure side.
16.
When pipe cleaning at low - pressure side is finished, disconnect the process - tube fitting from the
suction pipe.
Low pressure side
Cylinder charge
Container
-14-
Container
Charge Cylinder
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