TECNOPLAST ITALY Srl Pag.9
STRUCTURES AND ACCESS
When maintenance is required on fans installed on roofs or metal structure, verify their
resistance to operator weight and that they are equipped with the safety characteristics
foreseen. Always consult preliminarily the constructions responsible and follow the rules
indicated. Evaluate if the intervention needs the safer use of lifting machines (cranes,
scaffolds, etc…).
The maintenance on TECNOPLAST Italy fans must be performed on turned-off machine (use
the switch previously installed near the fan)
The machine tampering or the wrong assembling, performed by not specialized or
unauthorized technicians, exclude the Vendor from any responsibility for related damages to
persons or things.
HANDLING AND LIFTING
Fan handling and lifting are operations to be performed carefully and by expert personnel.
Handling can be made using elevator trolleys or transpallett according to weight and
dimensions
The lifting points are two anchorage plates on the back of the base frame.
It is recommended to use suitable belts or chains and to check the connection to the fan
plates.
MAINTENANCE
Centrifugal fans series VL are designed and realized to last in time in full efficiency, without
repetitive maintenance operations. The construction materials guarantee the maximum
resistance also in continuos working conditions and long exposition to atmosphere agents or
unhealthy environments.
However it is recommended to check periodically, with frequency due to environmental
conditions and to substance nature (once per year or twice if the conditions are particularly
critics):
The impeller cleaning, that must be kept high to avoid unbalancing
The bearings status that can be damaged if the impeller isn’t kept dinamically balanced.
ATTENTION: the bearings are shielded and do not require greasing. It is recommended
the substitution every 20.000 working hours (on two poles motor) or 40.000 (on four
poles motor) and however every two years.
The anchorage devices (check them particularly in places where atmospheric agents are
tight; i.e. winds, rainstorms, snow)
The electrical cables, connections, especially outside
The switch near the fan, very important in case of emergency
The piping conditions, especially near the fan inlet and outlet
Must be precise that any time that operation on electrical connection are performed, must
be verified the rotation sense of the impeller, also indicated on the motor
