4-5
4.1.4 Refrigerant Recovery and Charge
Schematic diagram
Service work
Service port
Remarks
Pressure Check
High pressure
w
q
Refrigerant recovery
and charge (R134a:
4.6Kgf)
[1] Refrigerant
Recovery
t
Recover refrigerant from port
t
after operating
Automatic Pump-Down first.
r
&
t
Recover completely the refrigerant
left in the unit port
r
&
t
.
[2] Vacuum &
Dehydration
r
&
t
After recovering, vacauum from
port
r
&
t
.
※
The connection at port
r
is same
size at
q
for low pressure.
[3] Liquid charging
t
→
e
After vacuuming, charge liquid
refrigerant from
t
first and them
from
e
.
If not reached to the specified
amount 4.2 kgf, go to next below.
1. Operate Automatic Pump-Down
first and stop it using ON/OFF
switch after the compressor
stops during the Auto pump
down operation.
2. Charge liquid refrigerant from
port
e
.
Low pressure
e
LSV
e
t
r
q
w
Drier
ESV
EV
HSV
Receiver
Condenser
Check valve
DPR
ISV
DSV
BSV
SMV
service port
service port
Compressor
Evaporator
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Summary of Contents for LXE10E-A4
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