Pentair Jung Pumpen U2 KS Instructions De Service page 8

ENGLISH
level available, for U2: 40 mm.
CAUTION!
For safety reasons, mobile operation is only allowed with a foot
strainer.
If a hose is used as a pressure line, care must be taken to en-
sure that for every pumping operation 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 operation. For the same reason, the
pump would not operate if it was switched on before being sub-
mersed.
The pump can also be vented by providing a 6 mm drill-hole in
the pump housing.
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 cables must be replaced by the
manufacturer.
8
CAUTION!
Do not touch the pump until all rotating parts have come to a
standstill.
NOTICE! If the water contains high levels of iron or lime, insuf-
ficient 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 en-
sures optimum performance and operation.
Tightening torque M for A2 screw materials for Amtec 5,0 M
A
= 2 Nm
QUICK TIPS FOR REMEDYING
FAULTS
Pump does not work
• Check mains current (do not use a pin gauge)
• Fuse faulty = may be too weak (please refer to Electrical Con-
nection)
• Mains supply cable damaged = repair to be carried out by
manufacturer only
Pump runs but does not pump
• Empty the pressure pipe or hose to allow the non-return
valve to open and the air to escape from the pump housing,
it may be necessary to carry out a ventilation drilling
Impeller blocked
• Solids and fibrous matter have become lodged in the pump
housing = clean
Decreased pumping performance
• Foot strainer obstructed = clean
• Pressure pipe obstructed = clean
• Rotor worn out = repair to be carried out by the manufacturer
A