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9. Functioning of the electronic pump control system
9.1.
General information
The electronic pump control feature acts as a function of the pressure and the water flow rate. On the one side, it
will cause the automatic cutting-in or cutting-out of the pump when the water tap or any other consumer
component is opened or closed. On the other side, the electronic pump control will trigger the automatic cut-out
feature of the pump in the case of dry running or absence of water, which means if the volume of the water being
discharged is insufficient or if no water is being discharged at all. This will prevent damage to the pump caused by
overheating.
9.2.
Functioning
Opening a water tap or any other consuming component will lead to a drop of the pressure inside the pipe
system. As soon as the preset cut-in pressure is reached, the electronic pump control will start the pump.
Following the closing of the consuming component, the pump will continue to run until the pressure in the system
stops to raise, subsequently it will cut the pump out. The pipe system will then be subject to the max. attainable
pressure of the pump.
9.3.
Cutting out in the case of dry running or absence of water
In the case of dry-running or the absence of water, the electronic pump control will cut the pump out. In addition,
the red "Error" warning indicator will light up. This protection feature will prevent another automatic start-up of the
pump. To resume operation, the "Start Pump" key of the electronic pump control has to be depressed. Before
doing so, please make sure to eliminate the cause of the dry running.
9.4.
Setting the pump pressure
Changes to the preset switch-on pressure must only be performed by qualified staff.
The switch-on pressure is preset to 1.5 bar. Experience has shown that this value is ideally suited for most
installations. Should any modification of this setting be required, please contact a qualified provider of plumber or
electrician services.
In this context, please note that a modification of this kind will only affect the switch-on pressure of the pump, but
will not cause any pressure increase inside the pipe system.
10. Maintenance and troubleshooting
Prior to carrying out any maintenance work, the pump must be separated from the electrical
mains. If you fail to separate the unit from mains, there is a risk of an inadvertent start of the
pump.
We decline any liability for damage caused by inappropriate repair attempts. Any damage
caused by inappropriate repair attempts will avoid all warranty claims.
Regular maintenance and thorough care will reduce the danger of possible malfunction and contribute to an
extension of the lifetime of your unit.
If the pump is to be put out of operation for some extended period of time, it should be emptied completely in by
opening the water drain screw (10). Subsequently, please flush the pump with clean water. Then allow the pump
body to dry completely in order to prevent corrosion damage.
Water left in the pump may freeze in case of frost and thus cause considerable damage. Please store the pump in
a dry, frost- protected place.
In the case of malfunction, you should first of all check whether it was caused by an operating error or some other
reason which cannot be attributed to a defect of the device - for instance a power failure.
The list below shows some possible malfunctions of the device, possible causes and tips on their elimination. All
the measures referred to may only be carried out with the pump being separated from the electrical mains. If you
yourself feel unable to eliminate any of these malfunctions, please contact the customer service department or
your point of sales. Any repair beyond the scope specified below must only be performed by qualified staff.
Please bear in mind that all warranty claims will become void in the case of damage caused by inappropriate
repair attempts, and that we decline any liability for any ensuing damage.
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