DRAUFLOS DF 7500 Gebrauchsanweisung - Seite 6

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DRAUFLOS DF 7500 Gebrauchsanweisung

TROUBLE-SHOOTING

ATTENTION!
Before any troubleshooting work, unplug wire cable. Malfunctions of the electrical system must
be eliminated by professional electricians.
MALFUNCTION
The engine is not
working. The pump does not
start and does not make a
noise.
The pump works, but does not
pump the liquid.
The pump stops suddenly or
works intermittently.
The capacity of the pump
falls or insufficient volume of
pumping liquid
INFORMATION
If the faults cannot be rectified, please contact our customer service department.
5
POSSIBLE CAUSE
The thermostat cut off the motor.
The impeller is blocked.
No mains power.
The float switch does not turn on.
The float switch does not turn on
when the level is increased liquid.
Air inside the pump.
Litter on the suction side.
The hose (pipe) is closed.
The pump worked for a long time
without stopping.
The hose (pipe) was bent.
Insufficient water level for suction.
The temperature of the pumped
liquid is more than 35 ° C.
The power of the network does not
match the nameplate on the pump.
Litter on the suction side.
Feed height too high.
Insufficient hose diameter.
SOLUTION
Wait 15-20 minutes until the thermostat
switches on the submersible pump again. Ob-
serve the maximum permissible temperature
of the pumped liquid. Check the pump for
specialists.
Remove dirt from the suction area. Through
the hole on the bottom of the engine housing,
clean it with a suitable tool.
Ask an electrician to check the wiring.
Make sure that the float can move freely.
Send the submersible pump to the service
center.
Release the air from the submersible pump,
bringing it into a tilted position, making an
angle of 45 degrees (to reduce the amount of
air trapped in the pump).
Remove dirt from the suction area.
Open the hose (pipe).
Switch off the pump from the mains and
allow it to cool for 15-20 minutes.
Straighten the hose (pipe).
Immerse the pump in water completely.
Observe the maximum permissible tempera-
ture of the pumped liquid, i.e. not more than
35 ° C.
Use the power source that corresponds to the
factory nameplate.
Remove dirt from the suction area.
Observe the maximum feed height, see
specifications.
Use a larger pressure hose.