© by WilTec Wildanger Technik GmbH
Seite 7
http://www.wiltec.info
Function:
1.
Starts and Stops the pump automatically.
2.
It protects the pump against damage caused by dry running.
3.
The pressure switch starts the pump for 15 seconds, if it is connected to the voltage
source. If the pressure in the line system drops, the pump is restarted. In the case of the
conventional systems with pressure switch & pressure tank, the pump stops running if a
certain pressure level is achieved. In contrast to this, the pressure switch stops depending
on the flow rate. In doing so it d
elays the pump’s switching off for a few seconds (7 to 15
seconds) to minimize the number of pump starts.
LED-indication:
1. The upper (1st) LED (Alarm) blinks: the automatic unit is off due to lack of water (protection
against dry running), press
„Restart“ to start the unit again.
2. The middle (2nd) LED blinks: the pump is switched on.
3. The lower (3rd) LED blinks: the switch has voltage
4. Restart (Reset)
– restart button
Possible dysfunctions and their solutions:
Dysfunction
Dysfunction of the unit
Dysfunction outside the unit
The pump won’t start
-
Circuit board is damaged
-
Missing voltage
-
Pump is defect
-
Mixed up electric cables
Dry running display
despite water
-
Set pressure too high (Adjust the
pressure setting screw till the red
Alarm-LED is off, if the pump stops
Pump does not stop
-
Circuit board is damaged
-
The flow detector is trapped in the
upper position
-
the reset-button is blocked
-
The pump has not enough pressure
-
There is a leak with more
than 0,6 l/min loss
Pump runs intermittently
(The pump starts and
stops constantly)
-
Circuit board is damaged
-
The pump has not sufficient
pressure
-
There is a leak with more
than 0,6 l/min loss