Kawamoto Pump RCD-40A0.75, Instruction Manual

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Head office：No. １１−３９ ４−chome, Ohsu Naka−ku Nagoya, ４６０−８６５０ Japan
Kawamoto Pump Mfg. Co., Ltd.
Refer
page
24,25
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・Unexpected trouble could occur. However, it is important to take appropriate measures immediately
when an abnormal condition is found.
・If the cause of the trouble is not clear, contact your dealer or designated service center.
Notice the pump type, serial No. and trouble (fault) state making an inquiry.
●
When you discard a pump and parts, please process in accordance with the law of
the country (area).
Caution
１０ Disposal
Cause Countermeasure Problem
Pump rotation direction is
reversed.
Impeller is clogged with foreign
matter.
The strainer is clogged with
foreign objects.
The pipe is clogged.
Worm parts.
Air has collected in the pump.
Large amount of bubbles in fluid.
An operating fluid level is as lower
as the lowest fluid level.
Piping loss is high.
Voltage is too low or unbalanced.
The bearing of a motor is worn
out or damaged.
Viscosity of fluid is too high.
Installation defect.
The foreign substance is got
blocked in the impeller.
The bearing of a motor is worn
out or damaged.
O-ring(packing) is damaged.
Water hammer occurs when a
valve is closed suddenly.
Correct the wiring.
Have specialist repair.
Have specialist repair.
Inspect and repair.
Have specialist repair.
A pump is suspended and it is
started again. Air is extracted from
an air bleed valve.
Prevent bubble generation/suction.
Adjust fluid level.
Review piping.
Adjust voltage.
Have specialist repair.
Use fluid with lower viscosity.
The check of an installation state.
Have specialist repair.
Have specialist repair.
O-ring(packing) is exchanged.
Install an accumulator or bypass
circuit.
Pump rotates, but no
water is discharged.
Prescribed discharge
amount/pressure is
not obtained
Overload (over-current)
occurs.
There is vibration or
abnormal noise.
Fluid leaks.
Water hammer
occurrence.