Troubleshooting - Renkforce 1519512 Mode D'emploi

11. Troubleshooting

With this water pump system for home use, 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.
The pump of the water pump system for home use does not suck in
• Open any present water tap on the pressure-side, since air cannot escape from the hose or in the pump. Move the
water pump system for home use back and forth a little (if it is not screwed down).
• Fill water into the suction hose and the pump before you connect the water pump system for home use to the mains
voltage.
• Briefly pull the mains plug from the socket and plug it back in.
• Check that the intake opening of the suction hose is completely underwater.
• If you have placed a shut-off valve in the suction line, it must never be closed while you operate the water pump
system for home use.
Water is transported but the pressure switch does not switch off the pump
• A water tap on the pressure side is open or a hose is leaking.
• Only when the tapping openings are closed and the hose on the pressure side is tight can enough water pressure
build in the pressure storage tank so that the pressure switch will deactivate the pump.
• Check the pressure in the pressure storage tank; see chapter 10. b). It must be in the range of 1.8 - 2.0 bar.
The pump does not work.
• The overtemperature protection triggered. Disconnect the water pump system for home use from the mains voltage
and let it cool off (at least 30 minutes). Remove the cause for triggering (e.g. water temperature too high, running
dry too long, shut-off valve on the suction side is accidentally closed, etc.).
Conveyed volume reduces or is too low
• Check the intake opening or the water filter installed by you for contamination.
• The pump of the water pump system for home use sucks in air because the intake opening is no longer completely
submersed.
• Check the attachment of the suction hose to the water pump system for home use.
• Check the suction hose for leaks or bends.
• The displacement reduces due to the principle the larger the conveyor height.
• The hose diameter is too low.
• An unsuitable hose was used on the intake side. It deforms due to vacuum during suction. Always use a bend- and
vacuum-protected suction hose on the intake side.
The pump will lag for a while after the water tap on the pressure side is closed
• This is normal because the pump of the water pump system for home use must build up a certain pressure for the
pressure switch to switch off the pump.
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