Electrical Connection - Pentair Jung Pumpen U2 KS Instructions De Service

For installations in areas subject to explosion hazards, special
regulations apply!
APPLICATION
WARNING!
The pump must only be connected to sockets that have been
installed properly in accordance with the regulations and are
protected with at least 10 A (slow) and RCD-safety switches
(30mA).
DANGER!
The pump must never be used when a person is in the water.
U2 KS submersible pumps are suitable for pumping domes-
tic waste water without stones. This includes also water from
household dishwashers and household washing machines.
NOTICE! In outdoor applications, only pumps with at least a
10-metre mains cable must be used.
When using the pumps, the relevant national laws, regulations
and stipulations must be adhered to, for example:
• Domestic contaminated and waste water
(e.g. EN 12056 in Europe)
• Installation of low voltage systems
(e.g., VDE 0100 in Germany)
For non-standard utilization conditions, further regulations
must be observed (e.g. VDE 0100 in Germany, part 701: bath-
rooms and shower rooms; part 702: swimming pools and foun-
tains and part 737: outdoor use).
Temperatures
The pumped medium must have a temperature of max 35°C.
The submersible pump is frost-resistant down to -20°C when
stored in dry conditions. When installed, however, it must not
be allowed to freeze in the water.
Transport
The pump must always be lifted by the handle and never by
the power supply cable! The pump should only be lowered into
deeper chambers or pits using a rope or chain.

ELECTRICAL CONNECTION

NOTICE! Only qualified electricians may carry out electrical
works to the pump or the controls.
WARNING!
Before carrying out any works: disconnect the pump and the
controls from the mains and take steps to ensure that no one
else can reconnect them to the power supply.
The relevant standards (such as EN standards), country-spe-
cific regulations (such as VDE in Germany), and the regulations
of the local power supply companies must be observed.
NOTICE! Never put the mains plug or a free lead end in water! If
water gets into the plug, this can cause malfunctions and dam-
age.
Observe the operating voltage (see the type plate)!
The pump is provided with a winding thermostat. In case of
unacceptably high temperatures it switches off the pump to
protect it against possible damage. Unacceptably high tem-
peratures may result e.g. from dry running or mechanical or
electrical overload.
CAUTION!
The pump is switched on again automatically after cooling
down - risk of injury!
For this reason, always disconnect the device from the mains
before remedying the fault! In order to do this, unplug from the
mains supply or remove the pre-fuses of the pump controls!
INSTALLATION
For installations in accordance with EN 12056-4, the pressure
pipe must be laid in a loop above the local backflow level and
protected with a backflow prevention valve. A correspondingly
larger diameter pipe should be used for longer pressure pipe-
lines to avoid pipe friction losses.
Permanent venting may be necessary if the pump runs dry
from time to time (pressure outlet surfaced). This can occur for
example if the residual water in the collecting chamber evapo-
rates or if the pump runs in "snore" mode during the test run.
To vent the pump housing the attached elbow must be drilled
at the marked location to provide a 6 mm drill-hole.
NOTICE! If the pump is malfunctioning, part of the contents of
the oil reservoir could escape into the pumping medium.
Dimensions of chamber: 40x40 cm
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 modification. This reduces the performance of the pump
only insignificantly.
This modification is carried out as follows. Detach the foot
strainer and carefully drill a hole into the 3 markings with the
ø 5 symbols. Deburr the drillholes. When reattaching the foot
strainer, ensure that the new drill-holes are not covered by the
bars of the foot strainer.
Low level pumping
Flooded areas can be pumped out leaving only few mm of re-
sidual water without the need for optional extras (U2: 5mm). 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
ENGLISH
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