- 9 -
VT317
∗∗
-OMH0002-A
TROUBLESHOOTING
Excessive supply oil amount
⑪
⑨
⑤⑧
Worn core
Low line voltage
⑫
Insufficient screw tightening
⑩
Foreign matter caught in core
④
Buzzing(AC coil)
Leakage is betected at the region
between manifold base and vale
body
⑧
Air leaks through manual portion
Worn spool
Intrusion of foreign matter
Leakage
Spool valve has not completely shifted
Poor seal on actuator (cylinders, etc.) side
Air leaks out of connection port.
Burnt coil
Higher voltage or wrong coil used
⑥
Coil splashed by water
⑦
Swollen spool
⑤
Blown fuse of disconnection lead wire
②
Poor contact at contactor wire or
connection part.
③
④
⑧
Broken coil wire
Foreign matter caught in spool
Faulty operation
Valve is not operated
Faulty wiring
①
Trouble phenomenon
Cause expected
Measures
Should any trouble be found during operation, trace the source of the trouble in the following order and take corrective action.
