Disconnect the unit from power mains and wait for all rotating parts to be at a complete standstill before carrying out any technical
maintenance and repair operations.
While performing technical maintenance:
• Check the grounding screw terminals and electric connectors for proper tightness and tighten them up if necessary.
• Check the casing fastening screws for tightness and tighten them up if necessary.
• Check the bolt connecting the motor shaft to the hub for proper tightness and tighten it up if necessary.
• Check the bolt connecting the motor shaft to the hub for proper tightness and tighten it up if necessary.
Technical maintenance must be carried out at least once a year.
Dismantling the motor and impeller for technical maintenance
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE
ANY MAINTENANCE OPERATIONS!
AVOID LIQUID SPILLS ON THE MOTOR! DO NOT USE AGGRESSIVE SOLVENTS AND
SHARP OBJECTS FOR CLEANING!
PRIOR TO COMMENCING ANY TECHNICAL MAINTENANCE PUT UP A PROHIBITORY
SIGN ON THE FAN STARTING PANEL:
“DO NOT SWITCH ON! MEN AT WORK!”
TECHNICAL MAINTENANCE
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