Jung Pumpen Pentair U3K/2 Originalbetriebsanleitung Seite 14

ENGLISH
Example of installation Duplex unit
ATTENTION! The floats of the level controller
and alarm system are installed so that they are
freely movable but not under the inlet. Please
observe the minimum distances. The controls
may only be installed in a dry and well venti-
lated room!
Flushing device
The pump can keep the intake section at the
bottom of the chamber clear of deposits to
a large extent if you carry out a small modi-
fication. This reduces the performance of the
pump only insignificantly.
This modification is carried out as follows. De-
tach the foot strainer and carefully drill a hole
into the 3 markings with the ø 5 symbols. De-
burr the drillholes. When reattaching the foot
strainer, ensure that the new drill-holes are
not covered by the bars of the foot strainer.
The U5 and U6 ranges provide markings on the
housing and the foot strainer to help you.
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Low level pumping
Flooded areas can be pumped out leaving only
few mm of residual water without the need for
optional extras, U3K: 5 mm, U5K: 6 mm and
U6K: 10 mm. To do so, the foot strainer must
be levered off with a screwdriver. In the case
of pumps with an attached control, the float
switch must be locked in the ON position. It is
not possible therefore in low level pumping to
operate the pump in switching mode.
To make the pump operate, the drainage hose
must be emptied before each pumping run and
there must be a minimum water level available
of, for U3K: 40 mm, for U5K: 60 mm and for
U6K: 90 mm.
Mobile operation
The pump must never be used when
a person is in the water.
For safety reasons, mobile operation is only al-
lowed with a foot strainer.
If a hose is used as a pressure line, care must
be taken to ensure that for every pumping op-
eration the hose is completely empty before
the pump is submersed. Any residual liquid
would obstruct the ventilation of the pump
housing and therefore also hinder the pump-
ing operation. For the same reason, the pump
would not operate if it was switched on before
being submersed.
The pump can also be vented by providing a 6
mm drill-hole in the pump housing. This drill-
hole allows the pump to be vented even if the
rubber flap is used.