19
4-5
4.1.4 Refrigerant Recovery and Charge
Schematic diagram
Service work
Service port
Remarks
Pressure Check
High pressure
w
q
Refrigerant Charge
(R134a : 5.4Kg)
[1] Refrigerant
Recovery
t
Recover refrigerant from port
t
after
operating Automatic Pump-Down first.
r
&
t
Recover completely refrigerant left in the
unit port
r
&
t
.
[2] Vacuum &
Dehydration
r
&
t
After recovering, vacuum from port
r
&
t
.
※
BSV,DSV,HSV & ISV are reversible in
flow.
※
The connection at port
r
is same size as
at
q
for low pressure .
[3] Liquid
charging
t
→
e
After cavuuming, charge liquid refrigerant
from
t
first and then from
e
.
If not reached to the specified amount 5.4kg,
go to next below.
1. Operate Automatic Pump-Down first and
stop it using ON/OFF switch when the
compressure stops during the Auto P.-D.
operation.
2. Charge liquid refrigerant from port
e
.
Take care that the high pressure at the port
r
&
t
will be keeping for a while after the unit
stops. (
r
&
t
are in closed line between
check valve and LSV.)
Low pressure
e
Check valve
DPR
⑤
Compressor
Reheat Coil
service port
①
②
③
④
ISV
BSV
CSV
※
Note
LSV
ESV
HSV
EV
Evaporator
RSV
Condenser (Air)
Condenser
(Water)
SMV
TEV
Drier
※
Note : CSV is fitted only for LXE10E-1 but not for LXE10E-1A, 1B, 1C.
001-030̲E-SM(LXE10E-1E)A4 2007.04.27 13:29 ページ 19
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