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Fault
Display indicator: A06
– Low temperatures of the cir-
cuit board in the control unit
(< -30 °C)
Display indicator: A08
– Motor temperature switch
tripped
Display indicator: - - -
Control unit ready for ope-
ration
Unit does not start the brus-
hing cycle.
The brush does not reverse its
direction of rotation when it is
placed under load
7. Periodic maintenance and cleaning
The unit must only be operated when in perfect condition!
Immediately shut down the unit as soon as any damage or malfunction is detected!
Danger!
• Only open the control unit and carry out maintenance work on the entire machine when the mains plug is disconnected!
Caution!
Risk of physical injury to people and animals and material damage!
• Maintenance and cleaning work must only be carried out by trained personnel.
• Keep all safety and warning notices on/at the unit in a legible condition at all times.
7.1 Overview of maintenance schedule
Component
Visual inspection of mechanical + electrical safety technology
Gears
Screw connections
Moving parts (plain bearings, rubber buffers, flange bearings, grease
nipples Fig.12)
Brushes
Entire machine
Electrical operational safety test
7.2 Visual inspection of mechanical + electrical safety technology
• Daily inspection of the unit for externally visible damage and general functionality.
Cause
Low temperature on the circuit board
in the control unit.
The motor temperature switch has
tripped.
Sensor board defective.
Motor cable broken.
Motor faulty.
The brush resistance setting
is not correct.
Main board defective.
Corrective measure
• Take the unit out of operation and switch it on again
when the outside temperature rises again.
• Disconnect the unit from the mains, let it cool down
and restart it.
• Check the main board bridge (Fig. 8)
• Check the sensor board (Fig. 10 + 11).
• Does the LED on the sensor board light up when the brush is
deflected from its rest position?
• If the LED does not light up when the sensor board is deflected:
• Check the motor cable and replace if necessary
• Sensor board defective, replace sensor board
• Check the motor
• All wires of the motor cable have continuity?
• External insulation intact?
• Replace motor cable if damaged.
• Have the motor checked by a qualified electrician
• Adjust the cut-off resistance, see Section 6.
• If the unit does not switch off with an appropriate load with any
of the settings, the main board is defective.
• Replace the main board.
Cleaning
Lubrication
x
x
x
48
Inspection
Frequency
x
Daily
x
Weekly
x
Weekly
x
Weekly
x
Weekly
Quarterly
x
Six-monthly
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