20 - MAINTENANCE
EN
Pag. 36/44 - Cap. 20 THIS MANUAL IS PROPERTY OF SCM INDUSTRIA S.P.A - ANY TOTAL OR PARTIAL REPRODUCTION IS STRICTLY FORBIDDEN
20.23.4 BELT TENSION ADJUSTING
(fs_20-28_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. 20.23-4) from plug (S fig. 20.23-4).
U.S.A. and CANADA version: before carrying out maintenance operations, adjustments or to
dismount any machine member turn main switch (Y fig. 20.23-4) to 0, lock it then indicate this with
a sign.
DANGER-WARNING:
use proper gloves for handling the tools.
DANGER-WARNING
after the first working days or after many working hours the belts get slack; the time required for
saw blade stop gets longer.
NOTE-INFORMATION:
every week check the cutterblock belts.
To stretch the belts proceed as follows.
• Lift the lever (M fig. 20.23-4);
(U.S.A. and CANADA version: activates a microswitch which prevents the motor from starting).
• Open the door (V fig. 20.23-4).
• Slacken the 4 retaining nuts (A fig. 20.23-4) of the motor support.
• Slacken nut (C fig. 20.23-4).
• Tighten the belt screwing down the screw (D fig. 20.23-4).
• When the adjustment has been made, tighten nuts (A fig. 20.23-4) and (C fig. 20.23-4).
• Close the door (V fig. 20.23-4).
• Lower the lever (M fig. 20.23-4).
CAUTION:
an excessive belt tightening will cause both functioning failures and belts wear beforehand. By
exerting a force P in the middle of a belt, the latter must have a yielding f as shown in the table.
Force P
N Kp
Yielding f (mm)
24 ÷ 26 2,4 ÷ 2,6 12 ÷ 13
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