Installation, Operation, and Maintenance Manual
SUMMIT PUMP MODEL 2196 / 2196-LF / 2196-R / 2796 17
Table 7 (continued)
CENTRIFUGAL PUMP TROUBLESHOOTING
Symptom Cause Solution
• Pump not primed
correctly.
• Re-prime pump.
• Air leak in suction line. • Replace gasket or pipe plug.
Pump loses prime
• Lantern ring in wrong
location.
• Repack moving lantern ring to
correctly align with flush hole.
• Misalignment. • Realign drive coupling.
Bearings are
running hot
• Low or insufficient
lubricant.
• Check oil level and or grease.
• Stuffing box gland is too
tight.
• Readjust or replace packing.
• Total dynamic head is too
low.
• Install throttle or reduce impeller
diameter.
• Rotary part rubbing
stationary part.
• Adjust part or replace parts.
Motor requires
excessive
amperage
• Liquid is heavier than
specified.
• Check specific gravity of liquid.
• Stuffing box is incorrectly
packed.
• Repack stuffing box.
• Shaft sleeve is scored or
worn.
• Replace shaft sleeve as required.
• Wrong type of packing. • Install correct packing.
• Shaft is bent. • Replace shaft.
Stuffing box is
leaking
excessively
• Worn mechanical seal
parts.
• Rebuild seal; replace parts.
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