Renkforce 1034027 Bedienungsanleitung Seite 22

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 troub-
leshooting.
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 triggered, 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 voltage, remove the hose and flush the inside of the dirt water pump with water.
• In automatic mode, the float switch automatically switches the dirt water pump on or off, depending on
the water level.
• 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 tempe-
rature 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 activate or deactivate the dirt water pump
• Choose the right operating mode („AUTOMATIC" or „MANUAL"), see chapter 7.
• Disconnect the dirt water pump from the mains voltage and flush it with clean water.
22