TROUBLESHOOTING
⑤
⑨
①
Foreign matter caught in air seat of pilot valve
⑤
Foreign matter caught in core of pilot valve
Foreign matter caught in armature
②
③
④
Leakage
Air leaks through exhaust
port of main valve
Air leaks through gasket
Intrusion of foreign matter
Spool has not completely shifted
⑫
⑤
⑩
⑥
⑦
⑪
⑥
⑦
Insufficient bolt tightening
Foreign matter caught in air seat of pilot valve
Foreign matter caught in core of pilot valve
(In case of external pilot) Air
leaks through pilot exhaust
port of pilot valve
Swelled out " spool ass'y " ring
Abrasion " spool ass'y" ring(in the case of rubber seal)
Poor operation or adherence
⑬
Excessive amount of lubricant
Higher voltage or wrong coil used
⑧
Faulty wiring
Poor contact at contactor wire or connection part
Blown fuse or disconnection lead wire
Poor seal on actuator (cylinders, etc.) side
Coil splashed by water
Burnt coil
Measures
Should any trouble be found during operation, trace the source of the trouble in the following order and take corrective action.
Faulty operation
Pilot valve is not operated
Though pilot valve does
shift, but main valve will not
shift or will be sluggish.
Disconnection coil wire
Fall of power supply voltage.
Trouble phenomenon
Cause expected
Fall of pilot pressure
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No.SX3000-OMM0002-B
Summary of Contents for SX3000 Series
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