Troubleshooting; Operation Troubleshooting - ITT GOULDS PUMPS ICO i-FRAME Installation, Operation And Maintenance Manual

7 Troubleshooting

7 Troubleshooting

7.1 Operation troubleshooting

Symptom
The pump is not
delivering liquid.
The stuffing box
has an air leak.
The impeller is
partly clogged.
The clearance be-
tween the impeller
and the pump cas-
ing is excessive.
The suction head
is not sufficient.
The impeller is
worn or broken.
The pump starts
and then stops
pumping.
The bearings are
running hot.
The pump is noisy
or vibrates.
98
Cause
The pump is not primed.
The suction line is clogged.
The impeller is clogged.
The shaft is rotating in the
wrong direction.
The foot valve or suction pipe
opening is not submerged
enough.
The suction lift is too high.
The pump is not producing the
rated flow or head.
The suction line has air or va-
por pockets.
The suction line has an air leak. Repair the leak.
The pump and driver are not
aligned properly.
There is not sufficient lubrica-
tion.
The lubrication was not cooled
properly.
The pump and driver are not
aligned properly.
The impeller is partly clogged.
The impeller or shaft is broken
or bent.
Model ICO i-FRAME, ICOH i-FRAME Installation, Operation, and Maintenance Manual
Remedy
Re-prime the pump and check
that the pump and suction line are
full of liquid.
Remove the obstructions.
Back-flush the pump in order to
clean the impeller.
Change the rotation. The rotation
must match the arrow on the
bearing housing or pump casing.
Consult an ITT representative for
the proper submersion depth.
Use a baffle in order to eliminate
vortices.
Shorten the suction pipe.
The gasket or O-ring has an air
leak.
Replace or readjust the mechani-
cal seal.
Back-flush the pump in order to
clean the impeller.
Adjust the impeller clearance.
Make sure that the suction-line
shutoff valve is fully open and that
the line is unobstructed.
Inspect and replace the impeller if
necessary.
The pump is not primed.
Rearrange the piping in order to
eliminate air pockets.
Realign the pump and driver.
Check the lubricant for suitability
and level.
Check the cooling system.
Realign the pump and driver.
Back-flush the pump in order to
clean the impeller.
Replace the impeller or shaft as
necessary.
Replace the gasket or O-
ring.
Re-prime the pump and
check that the pump and
suction line are full of liquid.