English
Installation and operating instructions Wilo-Drain MTS 40.../MTS 40E...
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10 Faults, causes and remedies
If the operating fault cannot be remedied, please
consult a specialist technician or the nearest WILO
after-sales service point or representative.
11 Spare parts
Spare parts may be ordered via a local specialist retailer
and/or WILOcustomer service.
In order to avoid queries and incorrect orders, all data on
the name plate should be submitted for each order.
12 Disposal
Proper disposal and recycling of this product prevents
damage to the environment and risks to personal health.
1. Use public or private disposal organisations when dis-
posing of all or part of the product.
2. For more information on proper disposal, please contact
your local council or waste disposal office or the sup-
plier from whom you obtained the product.
Technical information subject to change without
prior notice!
Faults
Causes
Remedies
Pump does not start
Interruption to the main supply, short-circuit
Insulation error in the motor winding
Check mains voltage.
Have the cable and motor checked by a con-
sultant.
Fuses, capacitor defect.
Replace fuses, capacitor.
Cable interruption.
Check cable resistance. If necessary, change
the cable. Only use original WILO special
cable!
Level switch does not switch.
Check the level switch.
Motor protection switch has triggered.
Motor protection switch set incorrectly.
Set to nominal current.
Macerator / impeller blocked by a foreign
body.
• Disconnect the system from the power
supply and secure it against being
switched on again.
• Close the check valve behind the pump.
• Lift the pump out of the sump.
• Remove foreign bodies from the pump.
Pump is not pumping.
Air in the spiral housing.
Vent the non-return valve.
Level control device set incorrectly.
Ensure that the impeller is flooded during
priming.
Pump pumping too little,
turbulent running.
Incorrect direction of rotation
Swap 2 phases of the mains connection.
Impeller worn.
Change impeller.
Impeller, macerator or pump housing
blocked with sludge.
Clean the pump, see 6th line
Summary of Contents for Drain MTS 40 Series
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