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Miscellany
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Repairs may only be carried out by qualified personnel who are familiar with the dangers involved and the relevant regulations.
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In commercial facilities, the accident prevention regulations of the association of industrial organisations for electrical systems
and equipment must be complied with.
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When in doubt about how to connect it correctly or should any questions arise that are not answered in these operating instructions,
as to the operation, the safety or the connection of the device, contact our Technical Support or another specialist.
5. Functional description
The pump draws water in and delivers it with increased pressure to the pressure outlet. With the pressure reservoir, it forms a system that
guarantees a certain water pressure continuously without the pump being constantly in operation. Liquids are nearly incompressible. The
pressure reservoir separates liquid and gaseous media (water from air) by means of a rubber membrane. The air is compressed and thus
accumulates pressure in the entire closed system. The pressure tank is pre-stressed with pressure (ca. 0.1 bar under the start-up pressure of
the pressure regulator).
With pressure reduction (e.g., opening of a water tap), the total pressure in the system falls to a certain value. A pressure regulator turns the pump
on when a minimum value is reached. Water is conveyed until a set maximum pressure is reached, at which the pump is switched off. This process
constantly is repeated, so that with proper functioning a certain minimum water pressure is always available. The switch-on frequency of the pump
depends on the set pressure difference (e.g., 1.5 bar min. - max. 2.5 bar) and the amount of water removed per time unit.
6. Operation
Always observe the safety instructions!
Check the conformity of the voltage indicated on the type label with that of the mains before operation!
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1 On/off switch
2 Carrying handle
3 Pressure line connection
4 Filling opening with stopper
5
5 Intake line connection
6 Pump housing
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7 Pressure equalisation hose
8 Manometer (not visible)
9 Pressure regulator
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10 Drain
11 Power connection
12 Bases with drill holes
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13 Pressure reservoir
14 Air valve (charging pressure)
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15 Electric motor
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6.1. Installation
Install the domestic water system on a level, stable base at a location protected from weather influences, flooding and similar impacts. If there is
danger of frost, suitable measures are to be taken, such as thermal insulation or taking the pump out of operation. The water intake should not
be located too far from the water system.
Drill holes in stone or concrete or screw the water system directly onto a suitable metal frame. Fixed installation with screws prevents undesirable
vibrations. Transmission of vibration from the pump to the piping can be reduced by the use of hoses. Pipes can be mounted on rubber sleeves.
Make sure that there is sufficient ground clearance under the drain screw so that the system can be drained. Also, make sure that the system
cannot be drained if the drain point lies below the intake point.
Make all pipe and hose connections watertight. Tighten screw connections, but not too tight. Use suitable sealing material at screw joints without
a rubber seal. Wrap thread with sealing material in the direction opposite to that of the thread. Natural hemp is preferable to PTFE strip, since it
[natural hemp] expands under the effects of water.
Hose connections are to be secured with hose clamps. All pipes should be firmly installed by suitable measures. Pipe clamps or other fastening
measures are strongly recommended in order to prevent slipping and to unburden the water system from unnecessary traction and thrust.
6.2. Connection
A) Connection of the intake line
Connect the intake connection (3) of the pump to the intake line.
If an intake hose is used, it should have a spiral reinforcement, since otherwise the atmospheric air pressure will compress it during operation,
which can greatly impair the delivery rate of the pump. Attaching an intake filter and/or a pre-filter is strongly recommended. A back-flow valve is
likewise to be attached in order to prevent self-draining of the intake pipe. The pump would otherwise have to carry out a new intake process after
every switch-off. At the same time, this accelerates the intake.
Place the intake line so that it rises from the intake point towards the pump. Absolutely avoid laying the intake line over pump height, as air bubbles
in the intake line delay or impede the intake process.
The intake valve should lay sufficiently deep in water in order to avoid a dry run of the pump if the level of the water falls. Make sure the intake
line is leak-proof. A leaky intake line draws in air and no water. Avoid drawing in solid substances (sand, etc.); install, if necessary, a strainer and
pre-filter.
B) Connection of the pressure line
Connect the pressure connection (5) to the pressure line.
Use a pressure hose and mount it with a suitable screw connection at the pressure connection of the pump (3). Install suitable shut-off units in the
lines in order to be able to separate the pump from the entire system while maintaining pressure. Installation of a self-bleeding valve is likewise
advisable.
C) Electrical connection
Insert the power plug into a grounded socket installed according to regulations. Turning the pump on/off is done via the integrated switch. The
operating state is indicated via the integrated control lamp.
Preferably, have the electrical installation done by a specialist, since a residual current circuit breaker is required for
operation of the device. Under certain conditions, an isolating transformer has to be connected ahead, if necessary. Inform
yourself about the legal regulations of your country.
6.3. Initial operation
1.
Open all valves or gates that may be present on the intake side.
2.
Fill the pump suction system via the fill opening (9) provided for this up to the edge with clean water.
3.
Close it with the plug again.
4.
Make sure that all pipe connections, plugs, etc., are tight.
5.
Switch the pump on. (I=ON, 0=OFF)
6.
It takes some time until the pump conveys water or until sufficient pressure is in the system. The pump switches off when the maximum switch-
off pressure set at the pressure regulator has been reached.
7.
Open all shut-off valves or gates on the pressure side of the system.
8.
Water can now be removed at the removal points. At first, compressed air will come bubbling out of the lines until a steady flow of water is
reached. If the system is functioning correctly, a constant water pressure is maintained.
If intake is faulty, refill water as described above, if necessary, or directly into the intake hose.
9.
Check the switch-on and switch-off pressure to ensure proper functioning and to adjust it to your needs. Manual readjustment of both is
possible if the pressure regulator (9) is open. It is a mechanical switch. Adjust the tension by turning the adjusting nut so that the desired
switch-on or switch-off pressure is set. (Strong spring = switch-off pressure, weak spring = switch-on pressure.) Monitor the pressure while
switching the pump on and off at the manometer.
10.
Close the pressure regulator housing again.
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