Instructions

6
the customer service department or your point of sales. Any repair beyond the scope specified below
must only be performed by qualified staff. Please bear in mind that all warranty claims will become
void in the case of damage caused by inappropriate repair attempts, and that we decline any liability
for any ensuing damage.
MALFUNCTION
POSSIBLE CAUSE
ELIMINATION
1.
The pump is not
discharging any
liquid, the motor
is not running.
1.
2.
3.
4.
5.
No current.
Thermal motor protection feature has
triggered.
The capacitor is defective.
The pump wheel is blocked.
The floating switch is defective.
1.
2.
3.
4.
5.
Please use a device complying with GS
(German technical supervisory authority) to
check for the presence of voltage (safety
information to be observed!). Please verify the
correct position of the plug.
Separate the pump from the electrical mains,
allow the system to cool down, eliminate
cause.
Please contact the customer service
department.
Eliminate blocking of pump wheel.
Please contact the customer service
department.
2.
The motor is
running, but the
pump is not
discharging any
liquid.
1.
2.
3.
4.
The intake openings are clogged.
The pressure line is clogged.
Air penetrates into the pump body.
The min. suction level was fallen short
of; possibly motion of floating switch
restricted or floating switch defective.
1.
2.
3.
4.
Remove possible congestion.
Remove possible congestion.
Start pump several times so that the entire air
will be driven out. Make sure that the water
level is not below the min. self priming level.
Make sure that the minimum suction level is
not fallen short of; if necessary, make sure
that floating switch can move freely; in the
case of a defective floating switch, please
contact customer service.
3.
The pump stops
after a short
time of
operation
because the
thermal motor
protection
feature has
triggered.
1.
2.
3.
4.
5.
The electrical supply does not
correspond to the information given on
the type plate.
Pump or intake openings are blocked by
solids.
Liquid is too viscous.
Temperature of the liquid is too high.
Pump is running dry.
1.
2.
3.
4.
5.
Please use a device complying with GS
(German technical supervisory authority) to
check the voltage of the lines of the
connection cord (safety information to be
observed!).
Remove possible congestion.
Pump may not be suitable for this liquid. If
feasible, the liquid should be thinned.
Make sure that the temperature of the liquid
being pumped does not exceed the max.
admissible value.
Eliminate causes of dry-running.
4.
Intermittent or
irregular
operation.
1.
2.
3.
4.
5.
Pump wheel obstructed by solid matters.
Refer to section 3.3.
Refer to section 3.4.
Mains voltage out of tolerance.
Motor or pump wheel defective.
1.
2.
3.
4.
5.
Remove solids.
Refer to section 3.3.
Refer to section 3.4.
Make sure that mains voltage matches that
indicated on the type plate.
Please contact the customer service
department.
5.
Water quantity
discharged by
pump is
inadequate.
1.
2.
3.
Refer to section 2.1.
Refer to section 2.2.
Worn pump wheel.
1.
2.
3.
Refer to section 2.1.
Refer to section 2.2.
Please contact the customer service department.
6.
The pump does
not cut in or out.
1.
2.
Floating switch cannot move freely.
Floating switch defective.
1.
2.
See that floating switch can move freely.
Please contact the customer service department.
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