10
trouble
-
shooting
guide
10. Trouble-Shooting Guide
Problem
Probable Cause
Remedy
Pump is running
but doesn’t deliver
Air cannot escape, since
pressure line is closed.
Open pressure line (e.g.
kinked pressure pipe.)
Air locks in the suction
base.
Wait for max 60 seconds
until the pump deaerates
automatically over the
vent valve. If necessary,
switch off and start it
again.
Turbine clogged
Clean turbine (point 8).
When starting the pump,
water height falls below
the min. water level.
Submerge pump deeper
(see min. water level,
point 9.)
Pump doesn’t
start or suddenly
stops during op-
eration.
Thermal overload switch
has switched the pump
off due to overheating.
Disconnect plug and
clean turbine. (point
8). Observe max media
temp. of 35
º
C.
No power
Check fuses and electri-
cal connections
Dirt particles (e.g.
pebbles) are jammed in
the suction base.
Disconnect plug and
clean suction base (point
8).
Pump runs but
output suddenly
decreases.
Suction base is clogged. Disconnect plug and
clean suction base (point
8).
We expressly point out that in accordance with product liability law, we
are not liable for damage caused by out equipment if it is due to improper
repair or if parts have been exchanged not using our original parts or
parts approved by us and if the repairs were not carried out by the Tech-
nical Service. The same applies to supplementary parts and accessories.
