TECNOPLAST ITALY Srl Pag.6
10.
OGIVE for impeller hub protection
11.
CASING in PVC or PP, can be partially or totally covered with resin fiberglass
12.
Casing GASKET
13.
NUTS for inlet fixing on casing
14.
INLET
INSTALLATION
Mechanical Connection
The fan can be located either inside or outside the exhausted room. It must be fixed
through the base frame holes on roof or a concrete basement appropriately sized to
support the fan weight
After fixing, verify the stability and planarity of the fan.
The connection between the inlet and the outlet of the fan with the ducts should
include flexible antivibration joints, better if flanged. These ducts should be
appropriately fixed to avoid load on the fan.
It is recommended to use antivibration mountings under the base frame.
The expulsion fitting
MUST HAVE
a net for birds, so the aspiration side in case of
working with free inlet (i.e. Atmosphere aspiration for room ventilation).
IN CASE OF INSTALLATION IN AREAS WITH PEOPLE PASSAGE, A RIGID PROTECTION
ON THE CASING IS RECOMMENDED, TO AVOID DAMAGES IN CASE OF
MALFUNCTIONS OR ACCIDENTAL BREAKAGES
Electric Connection
The control panel will be equipped of thermal-magnet protection to preserve the
motor and a differential switch to protect the operators in case of ground dispersion.
Near the fan will be installed a switch to be used during maintenance period. Turning
on the fan briefly, check the rotation sense, comparing it with the arrow on the fan. In
case of wrong rotation, invert two phases.
When any work is done on the fan, the electric drive is to be isolated from the
electrical supply and it is to be made sure that it cannot be reconnected. The main
power switch has to be secured against operation by third parties using a lockable
device (e.g. padlock) by the persons working on the fan.
The full disconnection of the
motor is only permissible in case of complete removal!
The safety regulations for work on electrical equipment in effect at the place of
operation must be observed at all times and be available at the place of operation.
ATTENTION: if the impeller rotation is wrong, the fan exhausts but, having to win
bigger resistance, with less efficiency and more current absorption, there is a motor
damage risk.
During the electrical connection the elementary safety rules must be followed
carefully and the cables must be without voltage.
Turn-on the fan from a safety position against the impeller and the other moving
parts; be sure that no device or equipment is in contact with the impeller.
In case of wrong rotation, before invert the phases as above described, turn-off the
fan.
