Troubleshooting - Renkforce 2302381 Bedienungsanleitung

12. Troubleshooting

The rain water tank pump you have purchased is a product that has been designed according to the state of the art
and is reliable in operation. Even then, problems and malfunctions can occur. Therefore, observe the following infor-
mation on how to solve the possible malfunctions.
Rain water tank pump does not suck in water
• Open the shut-off valve on the pressure side to bleed air from the hose or rain water tank pump. Move the rain
water tank pump back and forth a bit. Unplug the mains plug briefly from the mains socket and then plug it in again.
• Clean the suction openings and filter (first disconnect the rain water tank pump from the mains voltage!).
• The water level is too low, only air is sucked in.
Rain water tank pump does not start or stops during operation
• The float switch is not correctly positioned (or the float switch has switched off the pump because there is not
enough water in the rain water tank).
• Check the mains supply or the circuit breaker and the ground fault circuit interrupter. If the GF circuit interrupter
has tripped, you must disconnect the rain water tank pump from the mains voltage and check it for damage (e.g.
power cord).
• The overtemperature protection has tripped. Disconnect the rain water tank pump from the mains voltage and allow
it to cool down (at least 30 minutes). Eliminate the cause of the trip (e.g. water temperature too high, dry running
too long etc.).
Flow rate is lower or too low
• Check the suction openings for dirt, clean the filter.
• Check the shut-off valve, open it fully.
• The rain water tank pump sucks in air because the suction openings are no longer completely immersed in water.
• Check the hose attachment to the rain water tank pump.
• Check the hose for leaks or kinks.
• The greater the flow rate decrease, the larger the pump head.
The float switch is not released or does not switch off
• The float switch is not positioned correctly.
• Use either the cable holder (7) on the telescopic tube or the cable bracket (13) on the rain water tank pump to
attach the float switch. Position the float switch correctly so that it switches off the rain water tank pump when the
water level is low.
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