Wilo -DrainMTS 40/27-1-230-50-2 Einbau- Und Betriebsanleitung Seite 16

English
10 Problems, causes and remedies
Problems
Pump does not run
Protective motor switch engaged
Pump does not pump
Pump transports too little,
noisy operation
If no solution can be found, please contact your
plumbing and heating specialist or your nearest
Wilo Customer Service or representative.
11 Spare parts
Spare parts are ordered via a local specialist dealer
and/or Wilo customer service.
In order to avoid queries and incorrect orders,
make sure to mention all data indicated on the
rating plate when placing your order.
Subject to technical alterations!
14
Causes
Interruption of the current, short circuit,
Insulation fault in the motor winding
Safety fuse, capacitor defect
Cable break
Level switch does not switch
Protective motor switch not set correctly Switch to nominal current
Cutting device or impeller already
blocked by foreign bodies
Air in spiral housing
Level switch not set correctly
Wrong direction of rotation
Impeller worn down
Impeller, cutting device or pump housing
covered in sludge
Remedy
Check power supply,
Call on expert to check cable and motor
Replace fuses, capacitor
Check cable resistance. If necessary,
replace cable. Only use original Wilo spe-
cial cable!
Check level switch
• Switch off the pump voltage and
secure against re-operation.
• Close the shut-off valve at the back of
the pump.
• Remove pump from the sump
• Remove foreign bodies from the pump
Ventilate backflow preventer
Ensure that the suction impeller is
flooded
interchange two phases of the mains
connection
Change impeller
Clean pump, see sixth line
Wilo AG 05/2005