Hisense AVWT-192FFFH User Manual

88
Refrigerant Piping Work
4.4.1 Stop Valve
<Gas Valve>
(1) Make sure that all the stop valves are closed completely;
(2) Connect the charging hose to the service port and release gas from the gas pipe;
(3) Cut o󰀨 the end of the closing pipe (Φ1/4in.) and check that no gas exists inside the gas pipe;
(4) Remove the stop valve cover;
(5) Remove the closing pipe from the brazing portion by using a burner. Pay attention to the ame from the burner not to
burn the stop valve body.
Sound-Proof Cover
Metal Plate for Protection
Burner
Stop Valve
Service Port
Gas Pipe
Brazing Portion of
Closing Pipe
Low Pressure
Gas Valve
Spindle
Details of Closing Pipe
Cut from here
Φ1/4in. Pipe
Fig. 4.1
High Low
Pressure Gas Valve
● Ensure that there is no gas inside the pipe when removing the closing pipe. Otherwise, the pipe may be blown out and it
may lead to injuries.
● Protect the return oil pipe and sound-proof cover of the compressor with the metal plate when using a burner.
Stop valve is detailed as below:
Liquid Valve
Check Joint for Service Port
Only the charge hose can be
connected.
Tightening torque:
33.3ft·lbs(15 N·m)
Cap Tightening torque: e
ft·lbs(N·m)
Spindle Valve
Counterclockwise......open
Clockwise......close
Refrigerant Piping
Refrigerant Pressure
O-ring
Model
Torque d
ft·lbs(N·m)
Torque e
72~96
5.2(7)
7.4(10) 22.1(30)
9.6(13) 25.8(35)
18.4(25)
120
144~192
ft·lbs(N·m)
Check Joint for Service Port
Only the charge hose can be
connected
Tightening torque: a
ft·lbs(N·m)
Cap Tightening torque: b
O-ring
Allen Wrench
Open/Close
spindle valve
Spindle Valve
Counterclockwise......open
Clockwise......close
Tightening torque: c ft·lbs
(N·m)
Refrigerant Pressure
Gas Valve
Model
Torque a
ft·lbs(N·m)
Torque b
72~192
11.1(15)
40.5(55)
ft·lbs(N·m)
Torque c
ft·lbs(N·m)
22.1(30)
Allen Wrench
Open/Close
spindle valve
Tightening torque: d ft·lbs
(N·m)
ft·lbs(N·m)
● Do not apply an excessively big force to the spindle valve at the end of opening, otherwise the stop valve will be
damaged.
● At the test run, fully open the spindle. If not, the devices will be damaged.

Hisense AVWT-192FFFH Specifications

General

Brand	Hisense
Model	AVWT-192FFFH
Category	Air Conditioner
Language	English