TROUBLE
POSSIBLE CAUSE
PROBABLE REMEDY
PUMP REQUIRES
TOO MUCH
POWER
PUMP CLOGS
FREQUENTLY
EXCESSIVE NOISE
BEARINGS RUN
TOO HOT
OM-01478
D SERIES
TROUBLESHOOTING
PAGE D - 2
Liquid solution too thick.
Dilute if possible.
Integral discharge check valve clogged
Clean valve.
or binding.
Bearings in motor or gearbox
Check bearings.
worn or binding.
Integral suction or discharge check
Clean valves, check that flange nuts
valve clogged, binding, or not seating
are tight.
properly.
Liquid solution too thick.
Dilute if possible.
Pump, gearbox, or motor not
Check and tighten mounting bolts.
securely mounted.
Gearbox or motor not properly
See
LUBRICATION
in
MAINTE‐
lubricated.
NANCE AND REPAIR
.
Bearing temperature is high, but within
Check bearing temperature regularly
limits.
to monitor any increase.
Low or incorrect lubricant.
Check for proper type and level of
lubricant.
Drive misaligned.
Align drive properly.
