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Spindle Valve Torque (N m)
Gas
4
<Gas Valve>
Hexagonal Wrench
(to open/close spindle valve)
Spindle Valve
Counterclockwise---- Open
Clockwise----Close
(Closed before Shipment)
Check joint
(Only charging hose can be connected)
Tighten the cap with a torque
Hexagonal Wrench Size (mm)
Gas
G Do not apply an abnormal big force to
the spindle valve at the end of opening
.
(5.0N m or smaller).
The back seat construction is not provided.
G Do not loosen the stop ring. If the stop ring
is loosened, it is dangerous, since the
spindle will hop out.
(5) Connect the gauge manifold using
charging hoses with a nitrogen cylinder to
the check joints of the liquid line and the
gas line stop valves.
Perform the air-tight test.
Do not open the stop valves. Apply
nitrogen gas pressure of 4.15MPa.
(6) Check for any gas leakage at the flare nut
connections, or brazed parts by gas leak
detector or foaming agent.
(7) After the air tight test, release nitorogen
gas.
.
Liquid
Cap
Refrigerant Pressure
Tighten the cap with a torque
.
.
29.4N M
29.4N M
O Ring
(Rubber)
.
9N M
Refrigerant Piping
Liquid
After pipe and nut cap connected,when make air test ,
open the stop valve spindle cap,make sure valve closed
already(clock wise).
G
Tighten nut cap below torque,great torque will bring on
refrigerant leakage of valve spindle.
Pipe Diameter
G
Make air tighten test after valve spindle turn off closely.
Note:
Do not connect nut cap on test joint,supply for connecting
refrigerant charge soft pipe.
capacity when connect jonit cap and valce cap opened
together "pu chi" light sound.
5.6
Vacuum Pumping and charge refrigerant
(1) Connect a mani-fold gauge to the check
joints at the both sides.
Continue vacuum pumping work until the
pressure reaches 756mmHg or lower for
one to two hours.
After vacuum pumping work, stop the
mani-fold valve's valve, stop the vacuum
pump and leave it for one hour. Check to
ensure that the pressure in the mani-fold
gauge does not increase.
Note:
1. This unit is only for the refrigerant R410A. The
manifold gauge and the charging hose should
be exclusive use for R410A.
2. If vacuum degree of -0.1MPa (756mmHg) is
not available, it is considered of gas leakage or
entering moisture. Check for any gas leakage
once again. If no leakage exists, operate the
vacuum pump for more than one to two hours.
(2) Connect adjusted valve and charge kettle to
check joint of liquid valve.
(3) Fully open the gas valve and liquid valve slowly.
(4) Open adjusted valve to add refrigerant (must be
refrigerant is liquid).
(5) Operate cool mode,charge stated refrigerant.
(6) Confirm the capacity of charging refrigerant with
balance.an excess or a shortage of refrigerant is
cause of trouble to the units.
(7) Fully open the liquid valve.
14
Tighten Torque
It have no effect for system
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