Maintenance - Jung Pumpen Pentair U3K/2 Originalbetriebsanleitung

The enclosed rubber flap (not Flutbox) is fitted
in the pressure outlet (U3) or in the attached
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 rang-
es can be enlarged from 10 to 20 mm. This is
done by levering off the foot strainer and at-
taching the enclosed extensions to the inte-
grally molded pump feet. The foot strainer no
longer fits under the pump.

MAINTENANCE

We recommend that you service the equipment
in accordance with EN 12056-4.
Before carrying out any works: dis-
connect the pump and the controls
from the mains and take steps to en-
sure that no one else can reconnect them to
the power supply.
Check the rubber hose for mechani-
cal or chemical damage. A damaged
or kinked hose must be replaced.
Attention! If the water contains high levels of
iron or lime, insufficient cleaning can result in
irreparable 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 opti-
mum performance 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.
Worn impellers can have sharp edg-
es.
If the pump performance decreases, the im-
peller must be checked for wear and replaced
by the manufacturer if necessary.
Tightening torque M
for M 5 M = 5 Nm
A
for Amtec 3,5 M
A
for Amtec 5,0 M
A
ENGLISH
for A2 screw materials
A
= 1 Nm
= 2 Nm
15 15