SM-P00077-A/3
5. TROUBLESHOOTING
79
2020-04-15
5.
TROUBLESHOOTING
5.1
Problems, Causes, and Solutions
If the product does not operate as intended, check the table below for a possible solution.
Problem
Cause
Solution
Does not operate at
all
There is no electric signal.
Turn on the power.
Electric signals are faulty.
Repair the control circuit.
Voltage or current fluctuation is excessive.
Check the power capacity (voltage fluctuation
range: ± 10%).
Wiring is not correct.
Correct the wiring.
All pilot air exhaust ports are closed.
Inspect and correct the piping.
Does not operate
properly
Leakage current is excessive.
Correct the control circuit and/or add a bleed
circuit.
Chattering occurs.
Check the switching system and check for loose
wiring.
Voltage is not as specified on nameplate.
Correct the voltage to meet the specification.
Coil is damaged or short-circuited.
Replace the coil.
Pressure source is disconnected.
Turn on the pressure source.
Pressure is insufficient.
Readjust the pressure reducing valve or install a
valve for increasing pressure.
Flow rate is insufficient.
Inspect and correct the piping or install a surge
tank.
Pressure is supplied through exhaust port.
Inspect and correct the piping.
Piping is incorrect or omitted.
Inspect and correct the piping.
Speed control throttle valve is completely closed.
Readjust the needle.
Port A or B is left open to atmosphere.
Use a pipe fitting with diameter equal to or
smaller than the diameter of port P fitting.
Valve is frozen.
Take measures against freezing (such as keeping
the product warm and draining water).
Return of plunger is delayed by excessive oil or
existence of tar.
Check the quality of the lubricant (Class 1 ISO
VG 32 turbine oil).
Readjust the lubricator drip rate.
Install a tar removing filter.
Exhaust ports are clogged with dust.
Install a cover or silencer. Clean the exhaust
ports periodically.
Requires high
pressure to operate
Packing is swelling.
Check the quality of the lubricant (Class 1 ISO
VG 32 turbine oil).
Use the solenoid valves away from where cutting
oil is used.
Keep organic chemicals away.
Port A or B is open to atmosphere.
Inspect and correct the piping.
Foreign matters are stuck in packing.
Remove foreign matters.
If you have any other questions or concerns, contact your nearest CKD sales office or distributor.
