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11. Troubleshooting
With this dirt water pump, you purchased a product built to the state of the art and operationally safe. Nevertheless,
problems or errors may occur. Therefore, observe the following information about troubleshooting.
Dirt water pump does not take in water
• Open any present shut-off valve on the pressure-side, since air cannot escape from the hose or in the pump. Move
the pump back and forth a little. If required, fill water into the hose. Briefly pull the mains plug from the socket and
plug it back in.
• Clean intake openings (disconnect dirt water pump from the mains voltage first!).
• The water level is too low or air is sucked in as well.
The dirt water pump does not start up or stops in operation
• Check the power supply or the circuit protection and the FI protection switch. If the FI protection switch has trig-
gered, disconnect the dirt water pump from the mains voltage and check for damage (e.g. mains cable).
• The pump wheel inside the dirt water pump is blocked by dirt. Disconnect the dirt water pump from the mains volt-
age, remove the hose and flush the inside of the dirt water pump with water.
• The float switch has not been placed correctly.
• The overtemperature protection triggered. Disconnect the dirt water pump from the mains voltage and let the dirt
water pump cool off (at least 30 minutes). Remove the cause for triggering (e.g. water temperature too high, running
dry too long, etc.).
Conveyed volume reduces or is too low
• Check the intake openings for contamination.
• The dirt water pump sucks in air because the intake openings are no longer completely submersed.
• Check the attachment of the hose to the dirt water pump.
• Check the hose for leaks or bends.
• The displacement reduces due to the principle the larger the conveyor height.
• The hose diameter is too low. The hose is clogged by dirt.
Float switch does not trigger or does not switch off
• The float switch has not been placed correctly.
• C onnect cable to the float switch to the side at the cable clamp so that the float switch switches off correctly when
a low water level is reached, e.g. in a cistern.
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