Coaire Split-Type Room Air Conditioner Посібник з монтажу - Сторінка 14
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When relocating the unit to another place, perform evacuation using vacuum pump.
Make sure the refrigerant added into the air conditioner is liquid form in any case.
(Not applicable to the units with R22 )
onln
Open the valve stem until it hits
agai~st
the stopper. Do not try to open it further.
Securely tighten the valve stem cap with aspanner or the like .
• Valve stem cap tightening torque (See Tightening torque table in previous page ).
Outdoor
unit
A
C7t
Packed valve
Refrigerant
Indoor
unit
Gas side
CD
liquid
side~
\
Half union
Fig.22
Fig.23
(For method of using a manifold valve, refer to its operation manual.)
1. Completely tighten the flare nuts, A, B, C, 0, connect the manifold valve charge
hose to a charge port of the low-pressure valve on the gas pipe side.
2. Connect the charge hose connection to the vacuum pump.
3. Fully open the handle Lo of the manifold valve.
4. Operate the vacuum pump to evacuate. After starting evacuation, slightly loose the
flare nut of the La valve on the gas pipe side and check that the air is entering
(Operation noise of the vacuum pump changes and a compound meter indicates
o
instead of minus)
5. After the evacuation is complete, fully close the
handle Lo of the manifold valve and stop the
operation of the vacuum pump.
Make evacuation for 15 minutes or more and
check that the compound meter indicates
-29.92
Hg
(-1
xi 05Pa).
6. Turn the stem of the packed valve B about 45°
counterclockwise for
6-7
seconds after the gas
coming out, then tighten the flare nut again. Make
sure the pressure display in the pressure indicator
is a little higher than the atmosphere pressure.
Manifold valve
Charge hose-
Charge hose
/
I
,Q
Vacuum pump
Low pressure valve
Fig.24
7. Remove the charge hose from the Low pressure charge hose.
8. Fully open the packed valve stems Band A.
9.
Securely tighten the cap of the packed valve.