16
Troubleshooting Guide (Continued)
Symptom
Cause
Remedy
Low voltage.
Check voltage at motor
terminals and at meter while
pump is running – this check
should be performed by a
qualified electrician only. If
voltage is low check for
loose connections or consult
your power company.
Pump running too slowly.
Pump may be too hot.
Check line voltage; if less
than 6% or more than
1% of rated voltage
consult a licensed
electrician.
Increase ventilation. Reduce
ambient temperature.
Tighten any loose
connections.
Pump leaking from between
the casing and motor.
Casing bolts are not
tightened sufficiently; Casing
O’ring is worn; Mechanical
seal requires replacing.
Switch off the power to the
pump. Loosen the casing
bolts. Check the alignment
and condition of the casing
o’ring before retightening the
bolts. Replace the o’ring if
leaking persists.
Replace the mechanical seal.
Pump not running.
Check power supply.
No water.
Gate valve closed.
Open gate valve.
Foot valve leaking.
Check foot valve for seal, fix
or replace if necessary.
Air lock.
Check suction line for
‘humps’. Have your local
pump professional prime the
pump with an engine drive
pump to score air from lines.
Incorrect injector for
application.
Have your local pump
professional re-evaluate site
for pressure and flow
requirements. Select an
injector that will provide
enough pressure at the
required flow rate.
Water source has been
drawn down so that suction
is above the water line.
Check suction is submerged.
Pump will not prime.
Pressure switch cut-in
pressure is set too low.
Have your local pump
professional reset the
pressure switch settings.
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