IWAKI PUMPS PDS-H115, Руководство пользователя

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Troubleshooting
Maintenance
This section describes troubleshooting, inspection, specification and dimensions.
Points to be observed
Observe the following points during maintenance work:
•
Follow instructions in this manual for replacement of wear parts. Do not disassemble the
pump. Contact us when repairs are needed.
• Always wear protective clothing such as an eye protection, chemical resistant gloves, a
mask and a face shield during disassembly, assembly or maintenance work. The spe-
cific solution will dictate the degree of protection. Refer to MSDS precautions from the
solution supplier.
• Solution in the discharge line may be under pressure. Release the pressure from the
discharge line before disconnecting plumbing or disassembly of the pump to avoid solu-
tion spray.
• Risk of electrical shock. Be sure to turn off power to stop the pump and related devices
before service is performed.
Troubleshooting
First check the following points. If the following measures do not help remove problems, con-
tact your distributor.
States Possible causes Check items Solutions
The pump
does not run. Faulty wiring If wiring between the motor and mo-
tor driver is correct? See page 15. • Correct wiring and resume opera-
tion.
Power voltage is too
low. If a rated power voltage is applied
to the motor driver? See page 17. • Observe the rated voltage of the
driver.
An inapplicable mo-
tor driver is used. If an applicable motor driver is
used? See page 17. • Use an applicable motor driver.
Motor failure If the motor steps out, abnormal
noise and vibration are found? • Check the motor. Replace as
necessary.*
If motor has failed, related electric
devices may also have failed, so
inclusive inspection is necessary.
Liquid can not
be pumped up. Air ingress through a
suction line Check for an air-ingress point. • Seal the point by tightening a
pipe joint.
A failed O ring seal Check for a leak point or a loose
bolt. • Tighten the bolt. Replace O ring
as necessary.*
Clogging in a pipe or
the pump Flush the pipe and the pump to
determine clogging points. • Determine a cause of clogging.
Repair will be needed if the pump
is clogged
.*
Malfunction of an air-
operated valve If supply air pressure is correct? • Observe the rated supply air
pressure.
If a solenoid valve is damaged? • Replace as necessary.
A ball valve is stuck
on a valve seat. If liquid flows back from the suction
line end. • Replace the check valve as nec-
essary.*
* Solutions marked with * are conducted by us.