Translation of the Original Operating Instructions
7
Water left in the pump may freeze in case of frost and thus cause considerable damage. Therefore, the pump
must be removed from the liquid being discharged and fully drained when temperatures are below the freezing
point of the liquid. Please store the pump in a dry, frost-protected place.
In the case of malfunction, you should first of all check whether it was caused by an operating error or some other
reason which cannot be attributed to a defect of the device - for instance a power failure.
The list below shows some possible malfunctions of the device, possible causes and tips on their elimination. All
the measures referred to may only be carried out with the pump being separated from the electrical mains. If you
yourself feel unable to eliminate any of these malfunctions, please contact 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. No current.
2. Thermal motor protection feature has
triggered.
3. The capacitor is defective.
4. The pump wheel is blocked.
5. Anti-dry running protection is
activated
1. 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.
2. Separate the pump from the electrical
mains, allow the system to cool down,
eliminate cause.
3. Please contact the customer service
department.
4. Eliminate blocking of pump wheel.
5. Follow instructions as in section 8.
2. The motor is running, but
the pump is not
discharging any liquid.
1. The intake openings are clogged.
2. The pressure line is clogged.
3. Kinks or similar disturbances in the
connection lines.
4. Check valve (non-return valve) is
blocked or damaged.
5. Inlets are not immersed in the liquid
to be discharged.
6. The pump head of the pump referred
to in the technical data is exceeded.
7. Info due to water shortage
1. Remove possible congestion.
2. Remove possible congestion.
3. Remove the kinks or other
disturbances in the connection lines.
4. Eliminate blocking of the check valve
(non-return valve) or replace, if
damaged.
5. Immerse the intake inlets of the intake
line into the liquids to be discharged.
6. Modify the installation so that the
suction height will not exceed the
maximum value.
7. Bleed and refill with water
Please refer to chapter 5.7
3. The pump stops after a
short time of operation
because the thermal motor
protection feature has
triggered.
1. The electrical supply does not
correspond to the information given
on the type plate.
2. Please refer to items 2.1 to 2.7.
3. Liquid is too viscous.
4. Temperature of the liquid is too high.
5. Pump is running dry.
6. Info due to water shortage
1. 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!).
2. Please refer to items 2.1 to 2.7.
3. Pump may not be suitable for this
liquid. If feasible, the liquid should be
thinned.
4. Make sure that the temperature of the
liquid being pumped does not exceed
the max. admissible value.
5. Eliminate causes of dry-running.
6. Bleed and refill with water
Please refer to chapter 5.7
4. Intermittent or irregular
operation.
1. Please refer to items 2.1 to 2.7.
2. Refer to section 3.3.
3. Refer to section 3.4.
4. Mains voltage out of tolerance.
5. Motor is defective.
1. Please refer to items 2.1 to 2.7.
2. Refer to section 3.3.
3. Refer to section 3.4.
4. Make sure that mains voltage
matches that indicated on the type
plate.
5. Please contact the customer service
department.
5. Water quantity discharged
by pump is inadequate.
1. Please refer to items 2.1 to 2.5.
1. Please refer to items 2.1 to 2.5.
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