8
EN
pressure switch TDP DS
Operation
Switching the device on
1. Open a consumer at the end of the pressure side, e.g.
water tap or garden sprayer so that any remaining air in
the line is able to escape.
2. Connect the mains plug of the pressure switch with a
safety socket.
ð
The LED
Power On
(9) is illuminated.
ð
The pressure switch activates the pump.
ð
After approx. 20 to 25 seconds, the pump has built up
the operating pressure. While the pump is in operation,
the LED
Pump On
(8) is illuminated.
3. Close the tap on the pressure side when the desired
amount of water has been supplied and the air was able to
escape.
ð
The pump continues to operate a little longer, until the
operating pressure that is set in the pressure switch is
reached.
ð
If the pressure switch detects that the flow rate is too
low, it automatically switches off the pump. This serves
as a protection against the pump running dry. In this
case, the LED
Alarm
(7) is illuminated. If so, check
whether the suction hose connected to the pump is
correctly positioned, whether a shut-off valve in the
suction hose is accidentally closed or whether a filter is
contaminated.
Info
It is helpful to fill the suction hose with water to
support the suction procedure of the pump. To do so,
the end of the suction hose has to be provided with a
backflow preventer! Please observe the instructions of
the pump.
If there is no more air in distribution network, opening the water
tap causes the water pressure to drop. This is detected by the
pressure switch. It will automatically activate the garden pump
for as long as the water tap is opened.
After closing the water tap, the pressure in the distribution
network increases. Then the pressure switch switches off after
a few seconds.
Reset
If the pump runs dry and the water flow rate falls below the set
minimum value, the pressure switch switches off the pump for
reasons of safety. The LED
Alarm
(7) is illuminated. Please
proceed as follows to restart the pressure switch and the pump:
1. Stop the pump running dry by filling water into the suction
hose (if possible) or into the pump. For this purpose, many
pumps are equipped with a water filler neck. If necessary,
find out more in the instructions of your pump.
2. When you eliminated the dry run of the pump, press the
button
Reset
(6) at the pressure switch.
ð
The LED
Alarm
(7) goes out.
ð
The pressure switch activates the pump.
ð
The LED
Pump On
(8) is illuminated for as long as the
pump is in operation.
