The principle of the dry oil series reversing valve and two four-way reversing valve
This valve is mainly composed of dc motor, limit switch, reversing valve, rectifier transformer device and other components installed on the same floor and placed in the shield of the shell. System of the electric cabinet a commutation signals (system end differential pressure switch) have made dc motor rotation, and through the eccentric wheel drives the valve core as a straight line reciprocating movement. When needed by the valve core from in situ to commutation position, the end of the valve core baffle touch the limit switch action, send electrical signals to the electric cabinet, shall be ordered to stop rotating dc motor, completed the commutating process.
The usage instruction of the dry oil series reversing valve and two four-way reversing valve.
1, the valve should be installed in the system was charged with the Lord, the front end of the line, and is located in the ventilation, drying is easy to check no motion mechanism of interference and the surrounding area.
2, when used as two two-way,you must put the oil outlet "B" and the oil return port "R".
3, used as two three links, you must put the oil outlet seal "B".
4, electrical connections in accordance with the above principle.
The faults and elimination of the dry oil series reversing valve and two four-way reversing valve
1, the directional control valve is not reversing.
May be there is no reversing signal input, motor molds welding falls off; The motor shaft and eccentric loose not fastening; Impurity cavity into the sliding core jammed.Check them out and eliminate them.
2, sliding core two-terminal leakage.
Mainly two side sealing ring damage caused, may be seal inventory for a long time or long time use the aging, replace the seal circle.
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