21
M
ai
nt
ena
nc
e
Troubleshooting
This section describes troubleshooting, inspection, wear part
replacement, exploded views and specifications.
Observe the following points
•
Follow instructions in this manual for replacement of wear parts. Do not
disassemble the pump beyond the extent of the instructions
.
•
Always wear protective clothing such as an eye protection, chemical
resistant gloves, a mask and a face shield during disassembly, assembly
or maintenance work.
• Risk of electrical shock. Be sure to turn off power to stop the pump and
related devices before service is performed.
Troubleshooting
If you notice any abnormal or dangerous conditions, suspend operation im-
mediately and check the following points. If the following measures do not help
remove problems, contact your nearest distributor.
States
Possible causes
Solutions
The pump
does not
run.
Power voltage is too low.
•
Observe the allowable voltage
range.
The pump is not powered.
•
Check the pump is switched on if
any.
•
Correct wiring.
•
Replace a breaking wire to new one.
Wrong tubing or poor connection
•
Check and fix tubing.
Diaphragm fixing screw is loose.
•
Tighten the screw.
Eccentric shaft has worn.
•
Replace the connecting rod unit.
Contact us.
Connecting rod bearing has worn. •
Replace the connecting rod unit.
Contact us.
Motor trouble (a breaking wire, ca-
pacitor failure or bearing damage)
•
Replace the motor. Contact us.
Suction line pressure is com-
pressed and is higher than atmos-
pheric pressure.
•
Keep it lower than atmospheric
pressure.
Maintenance
