Page 52
EN
Chapter 11 Maintenance
Symptom
Potential cause
Check / solution
Personnel
qualification
Machine stops
(continued)
Material blockage in
the hose; pressure
greater than 40 bar.
• Run the machine in reverse to reduce the mortar pressure.
Check the mortar pressure on the mortar pressure gauge. If
the pressure gauge shows “0” bar, switch off the machine
and pull out the mains plug. Remove the mortar hose, remedy
the material blockage and then clean the mortar hose. If nec-
essary, use a new material hose.
Machine
operator
Mortar pressure gauge
defective.
• Switch off the machine and pull out the mains plug. Replace
the mortar pressure gauge.
Machine
operator
The machine is run-
ning at its limits;
the motor draws more
than 16 A current
(e.g. material that is
difficult to pump);
the RC is regulating
the motor.
• Adjust the material consistency.
Machine
operator
Protective grille not
mounted properly.
• Check that the protective grille above the material tripper is
properly fitted.
Machine
operator
Mixer motor defective
• Have the mixer motor checked and replaced with a new mo-
tor if necessary.
• Have the electrical control checked and repaired if necessary.
Service
technician/
qualified
electrician
Excessively high deliv-
ery pressure
• Reduce the length of the hose.
Machine
operator
Foreign matter in the
metering or mixing
shaft
• Switch off the machine and pull out the mains plug.
• Check whether there is a foreign body or hardened material
in the metering or mixing shaft; remove the foreign body or
hardened material if necessary.
Machine
operator
Too little material is
promoted
Pump shaft or pump
unit (rotor/stator)
worn or delivery pres-
sure too high.
• Switch off the machine and pull out the mains plug.
• Replace the pump shaft or the pump unit (rotor/stator).
• If the delivery pressure is too high, reduce the hose length.
Machine
operator
Pump is delivering no
material, but the motor
is running.
Pump shaft is un-
hinged or worn
• Switch off the machine and pull out the mains plug. Adopt
good practice when dismantling the rotor/stator component.
Then remount the shaft or replace the pump shaft with a new
one.
Machine
operator
Pump does not deliver
material.
Rotor/stator is worn
• Switch off the machine and pull out the mains plug.
• Replace the rotor/stator.
Machine
operator
