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1.2 Use
Van der Ende's HD pumps are designed to pressurise clean water at high pressure into a pipeline
system. HD pumps may only be operated if they are installed in a suitable pipeline and water system.
HD pumps may not be used for any purpose other than described above, or when failure of the HD
pump could cause potentially dangerous situations.
1.3 Media
Because gaskets and pump parts have limited chemical resistance, an HD pump may not and cannot
simply be used with any medium. The standard pump installations are only suitable for water which is
clean both chemically and mechanically. Special materials must be used for an HD pump which pumps
osmosis water. For more information and advice, contact the sales department at Van der Ende
Groep.
If media are used which are not suitable for the selected pump, the guarantee will become invalid.
1.4 Control and operation
A high-pressure pump is driven by an electric motor which can be started manually or controlled
remotely. Additional controls and connections, such as a control cabinet or similar, are not covered by
these instructions. The operating pressure must be set manually by adjusting the overflow valve.
Turning the button on the top of the overflow valve clockwise will increase pressure, turning it
anticlockwise will reduce pressure.
1.5 Users
In principle, an HD pump is not controlled directly but by a user/operator with a control panel or other
type of external control. Intended users must be at least 18 years old, employed at the company
where the HD pump is installed, and designated by the management as competent and authorised to
operate the HD pump.
Unintended users are any users who do not meet the above definition. Unintended users are all users
who, by using the HD pump, create unsafe situations or danger to themselves or others.
1.6 Operating environment
An HD pump may only be put into operation if it is installed into a suitable system.
When installing the pump, the following points must be respected:
The inlet pipeline must be one size larger than the inlet size on the suction side of pump;
Place the pump on a flat surface and below the water level, unless an inlet pressure pump is
used;
Avoid constrictions, bends, T-connectors and other elements which hinder the flow in the inlet
pipeline;
Both the inlet and discharge pipelines must always use flexible fittings to absorb any
vibrations which arise (pulsations and pressure shocks);
Teflon tape or similar must not be used for sealing connections, pipes, fittings, etc., since this
tape could end up in the pump. Instead, it is recommended that a liquid sealing material,
such as Loctite 542, is used to create airtight seals;
Use appropriate filters with sufficient capacity in the inlet pipeline, and regularly check these
for contamination to ensure sufficient flow is maintained;
Avoid creating a closed pressurised pipeline system, especially when working with a high-
temperature medium, high working pressure and high capacity;
It is advisable to install a pressure gauge in the inlet pipeline to monitor the inlet pressure;
Install an overflow relief valve on the discharge side, and set it to a maximum of 10% above
the maximum operating pressure.
IBAN NL71 RABO 0340341610 · KvK Den Haag 27230471 · Btw-nummer NL8000.78.378.B01 · info@vanderendegroep.nl · www.vanderendegroep.nl
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Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Telefoon 0174 515050
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