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Ke series, General pump – General Pump KE Owner Manual User Manual

Page 20

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GENERAL PUMP

A member of the Interpump Group

KE SERIES

Page 20

17. TROUBLE SHOOTING

THE PUMP DOES NOT PRODUCE ANY

NOISE: the pump is not primed

and is running dry!

- no water in the inlet line

- the valves are blocked

- the pressure line is closed and does

not allow the air to get out the fluid

end.

THE PUMP KNOCKS:

- air suction.

- insufficient feeding:

- bends, elbows and fittings along the

suction line throttle the amount of

water which passed through.

- too small inlet filter.

- dirty inlet filter.

- the feeding pump, where provided is

not of the suitable type or provides

insufficient pressure or volume.

- the pump is not primed due to

insufficient feeding or the delivery line

is closed during start up.

- the pump is not primed because some

valves are stuck (i.e pump inactivity

for long time).

- jammed or worn out valves.

- worn out pressure packings.

- the pressure regulating valve does not

work properly.

- clearance in the drive system.

- RPM are higher than rated.

THE PUMP DOES NOT DELIVER THE

RATED VOLUME:

- insufficient feeding (due to the cause

listed above).

- RPM are less than rated.

- excessive amount of water by-passed

by the pressure regulating valve.

- worn out valves

- excessive leakage from pressure

packings

INSUFFICIENT PUMP PRESSURE:

- the nozzle is (or has become) too large.

- RPM are less than rated

- excessive leakage from pressure

packings

- excessive amount of water by-passed

by the pressure regulating valve or

faulty valve operation.

- worn out valves.

EXCESSIVE WATER LEAKAGE FROM

THE PUMP:

- pressure packing are excessively worn

out (due to normal wear or excessive

cavitation).

- worn out plungers

OVERHEATED PUMP:

- the direction of rotation is not correct.

- pump is overloaded (pressure or RPM

over the rated values).

- the oil level is too low or the oil is not of

a suitable type or fully used

- water in the oil

- excessive belt tension or incorrect

alignment of the joint (where provided).

- excessive inclination of the pump

during operation.

PIPE VIBRATIONS OR KNOCKING:

- air suction.

- the pressure regulating valve does not

work properly.

- the by-pass line is undersized.

- jammed up valves.

- drive transmission motion is irregular.