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ISO PRO Centrifugal Pump
Section 7..........................................................Maintenance and Servicing
ITEM
PERIOD
Monthly
Bearings
3 Monthly
3 Monthly
Seal or Gland
Yearly
Flexible
6 Monthly
Coupling
Pressure
& Flow
3 Monthly
Recordings
Valves &
6 Monthly
Fittings
Rotating
Yearly
Element
ACTION
Check bearing temperatures by thermometer. If bearing temperature
is above 80 Deg. C, it may be because of too much, or insufficient
lubrication. If necessary, check the condition of the bearings.
Regreasable bearings should be supplied with fresh grease of the
recommended grade.
Check for lubricant leaks. Replace seals if leaking.
Oil lube bearings should be supplied with fresh oil of the recommended
grade.
Check old oil for metal particles or water.
Check shaft for excessive free play.
Check mechanical seal for leaks. Replace if leaking.
Check packing for excessive leaks, and adjust or repack if necessary
with the recommended grade and style of packing. When replacing
packing, ensure that the lantern ring is aligned with the lubricant supply
drillings.
When repacking or replacing seals, check the condition of the shaft or
sleeve.
Replace if badly worn or corroded, and fit new bearings and seals.
Check seal or gland flush piping for leaks, and repair or replace.
Check seal for wear, and replace if necessary.
Check flush piping for scaling or blockages and clean and replace.
Check alignment of pump and motor. Re-align if necessary.
Check for coupling wear and replace worn flexible element if necessary.
Where frequent adjustment of alignment is necessary, check for cause
(eg pipe loading, foundation failure, loose fasteners etc). If pipe loads
are suspected, unbolt piping at suction and discharge flanges and
check for mis-alignment.
Check pipe supports and pack or adjust as required.
Check inlet and discharge pressure and rate of flow.
Record these values and compare with previous recordings. A change
in reading may indicate a fault in the system, wear or blockage in the
pump.
Investigate, and rectify as appropriate, as continued operation may
result in untimely plant shutdown.
Check that ancillary fittings operate correctly.
Improper function may cause premature pump failure.
Remove the rotating element and inspect for wear, scale buildup, or
blockages.
Clean unwanted deposits from components, as buildup will result in
loss of performance.
Check impeller running clearance.
Replace defective components.
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