20. Maintenance
Before being commissioned for the first time power-operated gate installations must
undergo a professional security maintenance conducted by an expert. This mainte-
nance must be repeated at least once a year. The test book included in the delivery
must document the accomplishment as well as the results of the maintenance.
Regardless of the security maintenance the drive shaft should be cleaned using a
cloth once a year. Moreover it should be treated with a little silicone aerosol.
21. Electrical connection
Obtain the relevant information using the mounting instructions " motor control 47-
31-250" .
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