English
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8. Faults, causes and remedies
If the fault cannot be resolved, please
contact the Wilo customer service.
9. Spare parts
Spare parts may be ordered via the Wilo customer
service.
To avoid queries and incorrect orders, all data
from the rating plate must be specified with
every order.
The spare parts catalogue is available at
www.wilo.com.
10. Disposal
Information on the collection of used electrical
and electronic products.
Proper disposal and appropriate recycling of this
product prevents damage to the environment
and dangers to your personal health.
NOTICE: Disposal in domestic waste is forbid-
den!
In the European Union, this symbol can appear on
the product, the packaging or the accompanying
documentation. It means that the electrical and
electronic products in question must not be dis-
posed of along with domestic waste.
To ensure proper handling, recycling and disposal
of the used products in question, please note the
following points:
• Only hand over these products at designated,
certified collecting points.
• Observe the locally applicable regulations!
Please consult your local municipality, the near-
est waste disposal site, or the dealer who sold
the product to you for information on proper dis-
posal. For further information on recycling, go to
www.wilo-recycling.com.
Subject to change without prior notice.
Fault Cause Remedies
Pump does not run no power check fuses, float switches and cables
motor safety switch activated eliminate motor overload
Pump runs but does not pump wrong direction of rotation interchange two phases of the mains
connection
pipe or pump components blocked by
foreign body
check and clean pipe and pump
air in inlet pressure gland seal inlet pressure gland
inlet pipe too narrow fit a larger inlet pipe
Pump does not pump evenly inlet too high position the pump lower
Pressure is insufficient wrong choice of pump fit a more powerful pump
wrong direction of rotation interchange two phases of the mains
connection
flow is too small, inlet pipe blocked clean filter and inlet pipe
valve not sufficiently open open valve
foreign body blocking the pump clean the pump
Pump vibrates foreign body in the pump remove foreign body
pump not properly fixed to the base tighten anchor bolts
base is not sufficiently heavy fit a heavier base
Motor overheats,
motor cut-out activates
insufficient voltage check voltage
foreign body
bearing damaged
clean pump
have pump repaired by customer services
ambient temperature too high provide cooling
Installation and operating instructions - Wilo-Economy-MHI
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