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1. Troubleshooting
Turn off power to stop operation upon sensing abnormalities. And then look for a root cause or
contact us as necessary.
States
Possible causes
Solutions
Pump does not run.
The pump is not powered.
Check wiring.
Motor failure
Replace with a new motor. Contact us.
Plumbing damage or poor connection
Repair plumbing as necessary, or secure
connection.
Wear of an eccentric shaft
Replace the con rod unit. Contact us.
Wear of the con rod unit bearing
Replace the con rod unit. Contact us.
Wear of motor bearings
Replace a motor with new one. Contact us.
Voltage reduction
Keep the rated voltage.
Suction line pressure is higher than atmos-
pheric pressure.
Keep the pressure at or below atmospheric
pressure.
Unintentional operation stop.
Motor failure
Replace with a new motor. Contact us.
Wear of the con rod unit bearing
Replace the con rod unit. Contact us.
Wear of motor bearings
Replace a motor with new one. Contact us.
Voltage reduction
Keep the rated voltage.
Suction line pressure is higher than atmos-
pheric pressure.
Keep the pressure at or below atmospheric
pressure.
Discharge line pressure is higher than the
specified one.
For the series head type, keep the pressure
equal to atmospheric pressure.
Reduction of air flow/dis-
charge pressure
Plumbing damage or poor connection
Repair plumbing as necessary, or secure
connection.
Pump head fixing screws are loose.
Tighten them at specified torque.
Diaphragm fixing screws are loose.
Tighten them at specified torque.
Diaphragm damage
Replace with a new one.
Clogging
Remove clogging.
Worn valves
Replace with new ones.
Bracket/Diaphragm fixing screws are loose. Secure them.
Abnormal noise
Pump head fixing screws are loose.
Tighten them at specified torque.
Diaphragm fixing screws are loose.
Tighten them at specified torque.
Diaphragm damage
Replace with a new one.
Bracket/Diaphragm fixing screws are loose. Secure them.
Wear of an eccentric shaft
Replace the con rod unit. Contact us.
Wear of the con rod unit bearing
Replace the con rod unit. Contact us.
Wear of motor bearings
Replace a motor with new one. Contact us.
Maintenance
Содержание APN-450
Страница 17: ... 15 Installation 1 Before installation 16 2 Installation Tubing Electrical wiring 19 ...
Страница 24: ... 22 Operation 1 Before operation 23 2 Pump operation 23 ...
Страница 26: ... 24 Maintenance 1 Troubleshooting 25 2 Maintenance Inspection 26 3 Wear part replacement 27 ...
Страница 34: ... 32 ...
Страница 35: ... 33 ...