Daewoo RN-531N Service Manual page 27

Disassembly
of charging v alv e
8
(Coupling pipe)
SVC process
NO.
Connecting
the
Coupling pipe pinch-plier
1
9
welding &
discharging
hose
SVC process
NO.
Fix ing
the pinch-plier
2
&
charging pipe
Valv e reass' y
&
10
guage connecting
Discharging
3
the R-600a ref.
Remov ing the
Vacuum
11
4
remaining ref.
Remov ing the
Check
12
5
pinch-plier & pipe
Adjusting
the amounts of
13
refrigerants
(R-600a can)
Valve Ass'y
1. Decap the couplig pipe cap and
Valve Ass'y
disassemble the vlave ass'y.
※ If you don't disassemble, the coupling
Image
rubber would be melted.
1. Connect the discharging hose to
1. Weld after inserting the coupling pipe
the pinch-plier to the compressor.
OUT DOOR
2. The outlet of discharging hose should
※ Use the wet cloth for preventing the
be placed to the outdoor(window)
Image
other part of machinery-room from damage.
1. Reassemble the valve ass'y with
1. Fix the pinch-plier to the compressor
coupling pipe to clockwise.
charging pipe.
2. Connect the blue hose of the guage
2. Pinch-plier should not be moving freely.
※ If that is moving freely, it would cause to the coupling pipe and the yellow hose
to the vacuum pump.
fire/explosion as leakage gas in the room.
3. Open the blue guage lever
1. Discharge the R-600a ref. to outdoor.
and start the vacuum pump
[Befor connecting the vacuum pump]
※ It should have enough time more than
7 minutes to discharge.
1. Be vacuumed the cycle with pump.
1. And then, connect the vacuum pump
to the outlet of discharging hose
※ Time : 60~80min
※Vacum pump should be placed at
the outdoor where is able to clear air easily.
=> If the vacuum time is less than 60min,
※ It should have enough time
more than 10 minutes to discharge.
1. Check the guage : -76㎝Hg
1. Disassembe the each pipe (Del-pipe,
Suc-pipe, Capi-pipe, Dryer & Hot-pipe)
※ Caution ; A part is easily damaged
※ If the cycle is not vacuumed,
by flame so that disassemly should
be done carefully.
it would be leak.
1. Check the amounts of R-600a can
with scale and discharge the surplus ref.
※ Discharging is surely done at the outdoor
where is able to clear air.
※ Tip of adjusting.
- Can total weight :160g(Can 75g+Ref. 85g)
- Adapter : 145g
=> Total : 305g
- The amounts of charging : 79g
=> Discharging : 6g => Total : 299g
27
5. How To Charge R-600a Refrigerant
Details
Details
ref. COP & air coolong would be weak.