80 0678106030L02 1411V002
10 Units for alternating current
Repairs above and beyond simple maintenance may only be carried out by a qualified techni-
cian or one of our service technicians�
De-energise the unit prior to working on it or in the event of potential hazards (e�g� pull the
mains plug) and prevent it from being switched back on again�
Problem Probable cause Solution
Device does not start No mains voltage • Contact an electrician� Check
mains fuse, switch on device
again, if possible� Replace the
thermal fuse if defective�
Undervoltage or overvoltage • Contact an electrician� Measure
mains voltage�
Capacitor defective • Contact a technician� Check
the capacitor and replace it, if
necessary�
Pressure switch in position "0" • Set to "I"�
Motor defective • Replace the unit�
Temperature switch in motor is
tripped (not present in all units)
1�High ambient temperatures
2�Mechanical sluggishness
3�Pressure in the line
1� Allow the unit to cool down�
Ensure better ventilation�
Attention, unit restarts automati-
cally!
2� Factory repair�
3� Vent the intake plenum�
Over-current switch is tripped • Contact an electrician�
• Check the motor protection
circuit breaker setting�
• Determine the cause�
Air intake filter is clogged • Insert a new filter�
Trouble-shooting
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