WilTec 50744 Bedienungsanleitung Seite 11

Electrical connection

Use a suitable power supply. This means a this a 12 V car battery or a 24 V truck battery.

Do NOT install on a 230 V power supply at 50Hz.

The pump is turned on and off by means of a built-in ON-/OFF switch. The indicator lamp inside
the switch lights up if the engine is started.

The engine is protected against overloading or blocking by means of a built-in motor protection. In
case of overheating the pump is turned off automatically due to the overheat protection and after
its cooling, the pump is automatically started.
Suction pipeline

Connect a suction hose (plastic hose minimum 3/4"with spiral reinforcement) directly or with a
threaded fitting to the suction connection (intake connection) of the pump (1" Inside thread) of the
pump.

The suction hose that is used should have a suction valve. In case the suction valve cannot be
used, a check valve should be installed in the suction line.

Position the suction line on a rising gradient from the removal point towards the pump. Avoid lay-
ing the suction line over the pump height, air bubbles in the suction line delay and prevent the
suction process.

Suction and pressure line must be placed in such a way so that they exert no mechanical pres-
sure on the pump.

The suction valve should lie deeply enough in the medium to be pumped. This way the drop in
the fluid level prevents the pump from dry running.

A leaking suction line prevents the suction of the pumped medium by sucking in air.

Avoid sucking foreign particles (sand etc.).
Commissioning

Set up the pump on a fixed, flat place, where the temperature does not exceed 40°C. The pump
has to be placed in a horizontal position, so that the bearings can function properly, screw the
pump tight to its bottom part.

Bring the suction line ready for operation. The suction hose should not be narrower than the suc-
tion connection. If the suction lift exceeds 4 m, use a suction line with a larger diameter.

Proceed with the electrical connection.
Cleaning
The heating oil pump must be cleaned only by using mild cleaning agents as well as a damp cloth and
soapy water. Damage caused by inappropriate cleaning agents is not covered by warranty.
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Seite 11