13. Faults
Motor fails to start up
Causes
No mains voltage
Pump rotor blocked -thermostat switched off
No intake
Causes
Intake valve not in water
Pump chamber without water connection
Air in intake line air-tight
Intake valve leaks
Strainer (intake valve) blocked
Max. suction height exceeded
Inadequate delivery rate
Causes
Suction height too high
Strainer dirty
Water level falling rapidly
Pump performance diminishedby contaminants part
Thermostat switches pump off
Causes
Motor overloaded - friction
caused by foreign
substances too high
Warning!
The pump must never be allowed to run dry!
Remedies
Check voltage
Dismantle and clean pump
Remedies
Immerse intake valve in water
Fill water into intake
Make sure intake line is
Clean intake valve
Clean strainer
Check suction height
Remedies
Check suction height
Clean strainer
Immerse intake valve deeper
Clean pump and replace wearing
Remedies
Dismantle and clean pump.
Prevent intake of foreign
substances (filter)
GB
9