6
General Pump Inspection and Maintenance Schedule
HSC Split Case Pumps
Excludes motors, VFD’s, and controls.
Contact Patterson Pump Company if assistance is needed to determine the inspection and service requirements for
a specific pump
Inspect (
) or service (
) at the
indicated calendar time or run time
interval – whichever comes first
4 hours
Routinely
Monthly
2000
hours or
3 months
4000
hours or
6 months
8000
hours or
12
months
Unusual noise
Unusual vibration
Unusual temperature
Leaks in pump or piping
Pressure gauge readings
Visual inspection of equipment general
condition
Anytime a pump is opened, inspect the
running clearances and restore them to
original specifications if the running
clearances have doubled (install new wear
rings)
Anytime a pump is opened, inspect the
impeller for corrosion or excessive wear.
Mechanical seal (should be no leakage)
Drain lines are working properly
Coupling integrity
Operate the pump
Tightness of foundation and hold-down
bolts
Check coupling alignment and integrity
(maintain records)
Add grease to pump anti-friction bearings
(maintain records)
Check and flush seal water and drain
piping
Perform a comparative field test (flow,
pressures, and power) with calibrated
instruments. Restore internal running
clearances if results are unsatisfactory
(install new wear rings).
Perform a comparative vibration test
Inspect sleeves. Replace if worn.
Realign coupled pumps (maintain records)
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