Pentair JUNG PUMPEN U3K 2 Instructions De Service page 16

ENGLISH
QUICK TIPS FOR REMEDYING
FAULTS
No pump operation
• Check mains current (do not use a pin
gauge)
• Fuse faulty = may be too weak (please refer
to Electrical Connection)
• 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
• Wrong direction of rotation (for a three-
phase current) = ask a qualified electrician
to change 2 phases of the supply line
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