Pentair Jung Pumpen MultiStream 150/4 C3 Instruction Manual page 12

ENGLISH
What to do in the event of any
problems
Pump does not work
∙ Check mains current (do not use a
pin gauge)
∙ Fuse faulty = may be too weak
(please refer to Electrical Connec-
tion)
∙ Mains supply cable damaged =
repair to be carried out by manufac-
turer only
Pump runs but does not pump
∙ Empty pressure pipe or hose to al-
low the non-return valve to open and
let the air escape from the pump
housing.
∙ Ventilate the pump housing by
unscrewing the "LUFT" (air) sealing
screw.
The impeller is blocked
∙ Solids and fibrous matter have
become lodged in the pump housing
(please refer to Maintenance)
Decreased pumping performance
∙ The impeller is blocked (please refer
to maintenance)
∙ Rotor gap too large = adjust (please
refer to maintenance)
∙ The impeller or the wear plate is
worn out = replace it (please refer to
maintenance)
∙ Wrong direction of rotation = change
2 phases of the power supply
12