Torex VDC Series - Switching on Procedure; Switching off Procedure; Description of Work Sequence

2 - Operation and maintenance
17
TO320 M - EN - Ed. 04.09
SWITCHING ON PROCEDURE11.
Before carrying out any operation on the machine, make sure it is in safety condition!
Before starting up the machine, make sure the installation and connections to the external power
supplies have been carried out completely and correctly according to the methods described below
in brief:
1. Read the OPERATION AND MAINTENANCE MANUAL completely
2. Check to ensure the anges and pneumatic connections are xed correctly.
3. Check to make sure the electrical connections are correct and that the box containing the connec-
tions is closed perfectly;
4. Check to ensure the correct rotation of the rotor.
5. Check to make sure all the hazard and warning signs are present and in perfect condition. WHEN
SWITCHING ON THE MACHINE FOR THE FIRST TIME, PAY SPECIAL ATTENTION TO EVE-
RYTHING THAT COULD INDICATE AN ANOMALY (HIGH NOISE LEVEL – IRREGULAR ROTA-
TIONS – VIBRATIONS -etc.).
6. Check to see if foreign substances or water have entered the valve. If this is the case, drain and
clean the hoppers thoroughly.
7. Make sure the supports are greased properly. The rst operating test must be carried out without
material in the valve.
The procedure described above must be repeated every time the plant is restarted after a shutdown
period exceeding one week.
Switching Off procedure11.1
Before carrying out any operation on the machine, make sure it is in safety condition!
Before switching off the machine, make sure it is completely empty.
Description of work sequence11.2
After having carried out the switching on procedure strictly as described earlier, it is possible to start
using the VDC.
VDC with counterweight11.2.1
In case of VDC with counterweight, the work sequence depends on the quantity of material which is
deposited inside the hopper. If the quantity of material overcomes the weight of the lever + counter-
weight, the VDC ap will open to allow the material to ow into the lower part of the valve. The lower
body will work in the same manner allowing the material to ow out of the body.
Motor-operated VDC11.2.2
In the motor-operated VDC the work sequence is controlled by the reduction gear which, by means
of the crank, allows alternate opening of the upper and lower ap.