Robuschi Robox Evolution RB-DV - 6.3 V-Belt Tension Check and Adjustment; 6.4 V-Belt and Pulley Replacement

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6.3 Check the V-belts tension
Check the V-belt tension following the parameters in the table, eventually correct it by the spring of the tightening device
e = I x E / 100
where I is expressed in mm.
Warning : Excessive V-belt tension could damage the blower and the motor
Check the V-belts alignement by using a scale as indicated in Fig.18
V-belt
section
F
or
ce
F
[ daN ]
Diamet
er
Dp
[ mm ]
Costant
E
SPZ
XPZ
2.5
95 – 125
> 132
1.45
1.30
SPA
XPA
5.0
100 – 140
150 – 200
> 224
2.30
2.10
2.00
SPB
XPB
7.5
160 – 224
236 – 355
> 375
1.55
1.20
1.10
SPC
XPC
12.5
250 – 355
375 - 560
1.80
1.60
Fig. 18
6.4 V-belt and/or pulleys replacement
ROBOX DV Remove the front panel of the noise hood.
ROBOX DV Remove the V-belt guard unscrewing the black dowel with a key
size 17 (see Fig. 22)
Fig.19
Release completely the spring of the tightening device unscrewing the nuts 51
(see figure 23)
Fit the safety transport plates 54 as indicate in figure 20.1 for ES/2-3-5 and 20.2 for ES/4
Lock the lower safety transport plate with the lower nut 61
Unscrew the upper nut 61 till to lift the motor enough for V-belts replacement
Secure the motor in this position by means of a wooden support
Replace the V-belts
Remove the wooden support
Remove the safety transport plates 54 and lock the nuts 61
Tighten the V-belts following the procedure of the paragraph 6.3
Position the front panel of the noise hood and the V-belt guard if present
51
54
61
61
54
e
F
I
D
p
1
7
Fig. 20.1 ES/2-3-5
Fig. 20.2 ES/4
61