Pentair Jung Pumpen U3 K Instructions De Service page 14

ENGLISH
CAUTION!
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 pumping opera-
tion. For the same reason, the pump would not
operate if it was switched on before being sub-
mersed.
The enclosed rubber flap (not Flutboxand U6)
is fitted in the pressure outlet (U3) or in the at-
tached elbow (U5). Ensure that the flap opens in
the direction of flow.
Enlarging the free passage
The free passage of the U5 and U6 pump ranges
can be enlarged from 10 to 20 mm. This is done
by levering off the foot strainer and attaching
the enclosed extensions to the integrally mold-
ed pump feet. The foot strainer no longer fits
under the pump.
NOTICE! If the pump is malfunctioning, part of
the contents of the oil reservoir could escape
into the pumping medium.
14 14
MAINTENANCE
Maintenance and inspection of this product
must be carried out in accordance with EN
12056-4.
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.
WARNING!
Check the mains cable for signs of mechanical
and chemical damage. Damaged or kinked ca-
bles must be replaced by the manufacturer.
NOTICE! If the water contains high levels of iron
or lime, insufficient cleaning can result in irre-
parable damage to the seal and thus also to the
pump motor in the long term.
Consequently, the pump must be cleaned at
regular intervals according to the hardness of
the water.
Cleaning
The foot strainer prevents coarse impurities
from entering the pump. Regular cleaning of the
float and the foot strainer ensures optimum per-
formance and operation.
Cleaning of the impeller (U5 and U6)
To clean the impeller, and in the event of an
obstacle or blockage, the foot strainer must be
levered off. After this, take out the screws on the
underside of the pump and remove the cover.
The impeller can now be cleaned.
CAUTION!
Worn impellers can have sharp edges.
If the pump performance decreases, the impel-
ler must be checked for wear and replaced only
by the manufacturer if necessary.
Tightening torque M
for M 5 M = 5 Nm
A
for Amtec 3,5 M = 1 Nm
A
for Amtec 5,0 M = 2 Nm
A
for A2 screw materials
A