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CAHB -1 0 s eries
9.0 Malfunctions
The following chapter describes potential causes for mal-
functions and the work that is necessary to restore
operation.
In the event of frequent malfunctions, shorten the mainte-
nance intervals.
Contact the manufacturer concerning malfunctions which
are not solved by the following suggestions.
Personnel
• Unless indicated otherwise, the work described herein to
solve malfunctions may be performed by the operator.
• Some work may only be carried out by qualified personnel,
and is specifically indicated in the description of the indi-
vidual malfunction.
• Work on the electric system may only be performed by
professional electricians.
DANGER
Electrical shock and moving parts hazards
Serious injury or death can be caused by touching live electrical
components and by unexpected movement of the actuator.
Be sure power supply is off and actuator is locked out before
installing.
DANGER
Danger if restarted
When correcting faults, there is danger of the energy supply being
switched on without authorization. This poses a life-threatening
hazard for persons in the danger zone.
Therefore, follow the precautions below:
• Prior to starting work, switch off the system and be sure it is
locked out.
DANGER
Risk of injury and device damage due to incorrect repair of
malfunction
Therefore, follow the precautions below:
• Never loosen the screws on the device or try to open it.
• In the event of a malfunction that cannot be fixed by following the
steps in the malfunction table in this operating manual, dismantle
the actuator and send it to Ewellix for repair (⮑ 5.0 Transport,
packaging and storage, page 13).
Actions during malfunctions
1. In the event of a malfunction that may present an imme-
diate danger to persons or assets, turn off the actuator or
control unit immediately and safeguard against a restart.
2. Determine cause of malfunction.
3. Depending on the type of a malfunction, have it repaired
by qualified personnel.
4. Inform responsible party on-site concerning malfunction.
NOTE
The following malfunction table provides information as to who is
authorized to perform the repair.
