W.Tech RAA Series Installation And Maintenance Manual - page 9
Pag 7
The assembly could he helped by means of pointers, which will be inserted in the holes in the lower body just before the upper one is
allowed to rest on it. Please see fig. 7.
Fig. 7
3.4
Electrical connection
Our units are normally supplied with the electrical motors already cabled and the wires are available outside of the unit minimizing the
labour on site. In case of particular motor versions or if the electrician is willing to re-wire all, please find below the procedure to
follow. In order to connect the motor of the fans, it is necessary to go inside the upper body, through its inspection manholes. See fig.
2.
Introduce the connection cable till the terminal box, through the holes available in the casing.
Capture the cable to one of the pipes that composes the motor support, by means of clamps. See fig. 8.
Fig. 8
To make the connection of the motors (and also of the fans and the electrical pump) the following measures have to be considered:
•
Before connecting the motor terminals to the mains, make sure that the terminal voltage shown on the motor plate is the
same as the mains voltage.
•
Make sure that motor terminals are tightened securely and that all stripped wires are carefully insulated in order to carry out
the connection.
•
Check that the rotation direction of the fan is the same as the direction of the arrows available on the diffuser.
•
We recommend that the mains supply line to the motor should be protected with well calibrated thermal relays and fuses.
Please remember that in across-the-line starting, a squirrel cage motor needs an intensity 6 to 7 times higher than the
nominal one.
•
Make sure the local electrical safety regulations in force have been respected.
3.5
Other details for the installation
•
Check and remove any material or element which has been part of the packing, and could be still joined to or inside the
tower.
•
Connect both external parts of the pipe.