IWAKI PUMPS AMP 40, Инструкция по эксплуатации

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Troubles
Symptom
Cause
Points to be checked
&
Countermeasures
When discharge
valve is closed.
When discharge
valve is opened.
Discharge
capacity is
too low. Pressure & vacuum
are normal. Pressure is high but
vacuum is normal. • Actual head is too
high or pipe resist-
ance is too large.
• Check actual head and
pipe resistance.
Pressure is low and
vacuum is very low. Pressure and vacu-
um are low. • Motor rotates in
reverse.
• Interchange motor wir-
ing.
• Power voltage is
low.
• Check voltage or fre-
quency.
• Overload • Check specific gravity
and viscosity of liquid.
• Ambient tempera-
ture is too high.
• Keep a good ventilation.
Discharge
capacity is
rapidly re-
duced. Vacuum gauge indi-
cates high figure. • Suction piping
clogs with foreign
matters.
• Remove foreign matters.
• Poor foundation • Reinstall the pump.
• Loose mounting
bolts.
• Retighten the bolts.
• Cavitation occurs. • Remove the cause of
cavitation.
• The bearing is worn
or melted.
• Replace as necessary.
• Motor bearing is
worn.
• Replace bearing or
motor.
Motor is
overheated.
Pump
vibrates.
• Magnet capsule or
spindle is broken.
• Replace as necessary.
• Dynamic balance
of drive magnet is
upset.
• Remove the cause.
Replace as necessary.
Maintenance