126 Synchro Air Conditioner
(3-way) Valve 
(3-way) Valve 
3-way Valve (Liguid Side) 3-way Valve (Gas Side)
Works Shaft position Shaft position Service port
Shipping Closed Closed Closed
(with valve cap) (with valve cap) (with cap)
Air purging Open Closed Open
(Installation) (counter-clockwise) (clockwise) (push-pin or with 
vacuum pump)
Operation Open Open Closed
(with valve cap) (with valve cap) (with cap)
Pumping down Closed Open Open
(Transfering) (clockwise) (counter-clockwise) (connected 
manifold gauge)
Evacuation Open Open Open
(Servicing) (connected 
manifold gauge)
Gas charging Open Open Open
(Servicing) (with charging 
cylinder)
Pressure check Open  Open Open
(Servicing) (connected 
manifold gauge)
Gas releasing Open Open Open
(Servicing) (connected 
manifold gauge)
3.
2.
1.
4.
5.
6.