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If abnormal operations occur while in use,
please check the following flowchart and take the appropriate measures.
<For Normal Open (N.O.)>
Operation failure
Fluid can't stop
Fluid can't flow
Coil burning
Cause
Power SUP OFF
Large vibration/Impact
Coil breakage
Low voltage
Wiring failure/ Wrong wiring
Foreign matter
High viscosity
Opposite connection
Parts break, wear deteriorate
Power SUP ON
High viscosity
High voltage leakage
High pressure differential
Low pressure differential
(For pilot operated type)
High fluid and ambient temp
Foreign matter
High voltage
High fluid/ambient temp
Water splashes over for a long time
Large vibration/impact
Countermeasure
Turn it OFF/Check the circuit
Vibration isolation/
Change installation site
Replace coil Ass'y
Adjust the voltage
Rearrange the wiring
Eliminate the foreign matter/ Install a filter
Reduce it to 50 cst or less
Make IN port the high pressure side
Replace the product
Turn it ON/Check the circuit
Reduce it to 50 cst or less
Control the leaked voltage as blow.
AC: less than 20% of rated voltage
DC: less than 5% of rated voltage.
Adjust the pressure/
Select the appropriate model
Adjust the pressure/
Select the appropriate model
Select the appropriate model
Eliminate the foreign matter/ Install a filter
Adjust voltage (Rated voltage ±10%V)
Select the appropriate model
Take waterproofing measures
Vibration isolation/ Change installation site
15
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