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Notes on During Operation
The following points must be checked while the pump is in operation. If something
abnormal occurs, stop the operation immediately and take proper measures by
referring to the section ‘‘Causes of Trouble and Troubleshooting’’ (Page 16). In case
the pump still cannot be restored to normal condition, please contact your supplier.
No.
Check Point
Remarks
1
Is pump transferring
liquid properly?
● Whether liquid is transferred.
● Whether suction and discharge pressures are at
normal levels.
2
Is there abnormal noise
or vibration?
● If pump does not function normally,
abnormal noise or vibration tends to be
generated.
● Base on which pump is mounted sometimes
becomes resonant, increasing noise. If
separation of pump from base decreases
noise, anti-vibration measure such as
anti-vibration rubber should be mounted.
3
Is liquid leaking or air
being sucked out from
joints of pump?
● Clamp connections more tightly.
● If many air bubbles are found in discharged
liquid, air is being sucked out. Examine
piping and clamp connection more tightly.
4
Is temperature of pump
unit surface, motor
surface, etc., abnormally
high?
● Pump unit surface temperature is same as
that of liquid handled.
● Temperature of motor surface is within
about 40°C above ambient temperature.
Sometimes it is too hot to touch, but it is
normal if temperature is within this range.
