SCM CU 300C - Belts Replacing

20 - MAINTENANCE
EN
Pag. 28/44 - Cap. 20 THIS MANUAL IS PROPERTY OF SCM INDUSTRIA S.P.A - ANY TOTAL OR PARTIAL REPRODUCTION IS STRICTLY FORBIDDEN
20.18.4 BELTS REPLACING
(fs_20-18_0.0)
DANGER-WARNING:
all adjusting operations are to be carried out with standstill spindle.
DANGER-WARNING:
before carrying out any of the operations make sure to cut the main electric power and disconnect
socket (T fig. 20.18-4) from plug (S fig. 20.18-4).
U.S.A. and CANADA version:before carrying out maintenance operations, adjustments or to
dismount any machine member turn main switch (Y fig. 20.18-4) to 0, lock it then indicate this with
a sign.
DANGER-WARNING:
use proper gloves for handling the tools.
If only one belt is worn or too long, you have to replace all belts.
• Lift the lever (M fig. 20.18.4);
(U.S.A. and CANADA version: activates a microswitch which prevents the motor from starting).
• Open the door (V fig. 20.18.4).
• Slacken the 4 retaining nuts (A fig. 20.18.-4) of the motor support.
• Slacken nut (C fig. 20.18-4).
• Slacken adjustment screw (D fig. 20.18-4) to slacken belt tension.
By using a lever lift the motor and keeping it in this position until belts (E fig. 20.18-4) are completely loose.
• Slacken the fastening dowels (G fig. 20.18-4) and remove the pulley (P fig. 20.18-4) so that the belts can slip
out.
• Extract the worn belts.
• Insert new belts and repeat the steps described thus far back-wards.
• Tighten the belts following the istructions mentioned in Par. 20.23.
CAUTION:
an excessive belt tightening will cause both functioning failures and belts wear beforehand.
• Close the door (V fig. 20.18.4).
• Lower the lever (M fig. 20.18.4).
FORBIDDEN:
- never pair belts of different makes;
- never use a new belt and an old one, because in that case the new belt tramsmits the entire power
by itself and so it is damaged in short time.