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In case of Flare, Flange type
(1) Open the ball valve cap before cutting the by-pass tube.(Fig.1)
(2) Check the ball valve section is completely closed.(Fig.2)
(3) Cut two parts of the by-pass tube.(Fig.4)
(4) Remove the connection pipe assy.(Fig.5)
Throw away the packing.
Do not brazing the pipe while the flange assy connect the ball
valve. (Except the PUH-5)
(5) Remove the by-pass tube.(Fig.6)
Braze the extension pipe with the flange assy. (Except the PUH-5)
(6) Connect the extension pipes with the packing between the ball
valve and the flange.(Fig.7)
Use the attached new packing certainly.
(1) The extension pipes should be connected with the valve knob
completely closed. (Fig.2)
Check leak test the part of flange and flare.
(2) Before charging the refrigerant, vacuum the pipes to clear all the air
and water.
(3) Charge the additional amount of refrigerant according to the table.
(4) Turn the ball valve knob to "Open" position after leak check again.
(Fig.3)
(5) Finally, put the cap back to the ball valve.
2. HANDLING PRECAUTIONS.
There will be small amount of refrigerant gushed out
of the by-pass tube at the moment.
1. PROCEDURE TO CONNECT THE EXTENSION PIPE.
Proceed with the connection as follows:
Fig. 1
Fig. 2
Valve knob
Close
Fig. 3
Valve knob
Open
Fig. 4
cut
cut
Fig. 5
Pipe assy
throw away
Unit side
Fig. 6
Flange assy
Extension pipe
By-pass tube
Fig. 7
Extension pipe
use the attached new packing
Unit side
Caution