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14
8 Problems, causes and solutions
Problem Causes
Solutions
Pump does not run
no voltage
Check wires and fuses and/or switch auto-
matic circuit-breakers back on in distribu-
tion substation
Rotor blocked
Clean casing and impeller
Cable
break
Check cable resistance. If necessary, replace
cable. Only use original Wilo special cable!
Pump has no power
The pump sucks in air due to
an overly strong check the
function/adjustments of the
drop in the liquid level
Check the liquid level
Pump working against insu-
lating air cushion
Fill the pump housing with water.
Pressure-pipe blocked
Check and clean line
No suction
Hose (suction side leaky)
Repair or change suction hose.
If no solution can be found, please contact your plumbing and heating specialist or your nearest
Wilo customer services or representative.
Subject to technical alterations!
www.motralec.com / [email protected] / 01.39.97.65.10
