6
6. TROUBLE SHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
Motor won’t
start
Check connections and power
supply
No Power
See section on maintenance
Impeller stuck
Motor turns
without
pumping
Move pump closer to water level
Check suction pipe is airtight
Make sure foot valve is immersed
by at least 50cm
Pump needs to be primed
Clean foot valve
Excessive suction height
Air in suction
Clogged foot valve
Delivery head exceeds pump capacity
Reduce delivery head
Specify different pump
Flow rate
insufficient
Reduce suction height
Clean foot valve and, if necessary
whole Intake pipe
Disassemble pump and carefully
clean pump body and impeller
Foot valve partially clogged
Impeller blocked
Suction height at limit
Tripped motor
overload
Check voltage and ventilation
Release impeller
(See section on maintenance)
Overheated motor
Impeller stuck
