© by WilTec Wildanger Technik GmbH
Seite 6
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The pump does not suck in
Cause
Remedy
The suction valve is not in the water
Put the suction valve in the water
Pump room without water
Fill in water in the pump suction
nozzles
There is air in the suction line
Check the sealing of the suction line
Suction valve leaks
Clean the suction valve
Saugkorb (Saugventil) verstopft
Clean the suction strainer
Max. suction height is exceeded
Check the suction height
Insufficient flow rate
Cause
Remedy
Suction head is too high
Check the suction height
Dirty suction strainer
Clean the suction strainer
Water level drops rapidly
Place the suction valve more deeply
Pump efficiency is reduced due to
harmful substances
Clean the pump and replace the wear
part
Thermal controller shuts down the pump
Cause
Remedy
Engine overload
– high friction with
other foreign particles
Dismantle the pump and clean it,
prevent the suction of foreign
particles (Filter)
Attention!
The pump must not run dry.
Pump control
Pressure switch EDWC2001
The pressure switch automatically controls the start & stop of the pump depending on the pressure
drop (opening of the water faucet) and the water flow stop (closing the water faucet). The pressure
switch stops the pump if no water is conveyed (protection against dry running).
Technical data - specifications:
Input voltage
220-250V / 50 Hz / Max. 10A
Pressure range
1 - 3,5 bar / 51 psi
Max. pressure
10 bar
Max temperature
55°C
Connections
25,4 mm external thread
Protection class
IP 65