15
2. If vacuum degree of -0.1MPa (756mmHg) is
pressure reaches 756mmHg or lower for
5.6 Vacuum Pumping and charge refrigerant
together "pu chi" light sound.
capacity when connect jonit cap and valve cap opened
29.4N M
(7) Fully open the liquid valve.
cause of trouble to the units.
Weighing meter.An excess or a shortage of
(6) Confirm the capacity of charging refrigerant with
(5) Operate cool mode,charge stated refrigerant.
(4) Open adjusting valve to add refrigerant (must be
(3) Fully open the gas valve and liquid valve slowly.
check joint of liquid valve.
(2) Connect adjusting valve and charge kettle to
1. This unit is only for the refrigerant R410A. The
After vacuum pumping work, stop the
open the stop valve spindle cap to make sure valve is closed
It has no effect for system
refrigerant charging hose.
Do not connect nut cap on test joint,supply for connecting
Make air-tight test after valve spindle turn off closely.
Tighten nut cap below torque,great torque will bring on
already(clock wise).
the spindle valve at the end of opening
After pipe and nut cap are connected,when test the air-tight ,
<Gas Valve>
Hexagonal Wrench Size (mm)
Gas
Liquid
Spindle Valve Torque (N m)
Gas
Liquid
4
Refrigerant Pressure
Hexagonal Wrench
(to open/close spindle valve)
Check joint
(Only charging hose can be connected)
Spindle Valve
Counterclockwise---- Open
Clockwise----Close
O Ring
Refrigerant Piping
(Rubber)
Cap
Tighten the cap with a torque
Do not apply an abnormal big force to
(5.0N-m or smaller).
The back seat construction is not provided.
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 mani-fold 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.
refrigerant leakage of valve spindle.
Pipe Diameter
Tighten Torque
Note:
(1) Connect a mani-fold gauge to the check
joints at the both sides.
Continue vacuum pumping work until the
one to two hours.
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:
manifold gauge and the charging hose should
be exclusive use for R410A.
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.
refrigerant is liquid).
(Closed before Shipment)
.
29.4N M
.
Tighten the cap with a torque
.
9N M
refrigerant is
.
