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Technical Information
5.19 
Motor Electronic (Speed Control Board) ............................................................. 51 
5.19.1
S 3xx .................................................................................................................... 51
 
5.19.2
S 4xx .................................................................................................................... 51
 
5.20 
Motor Brushes .................................................................................................... 51 
5.20.1
S 3xx .................................................................................................................... 51
 
5.20.2
S 4xx .................................................................................................................... 51
 
5.21 
Electric Brush Socket (S 254i and S 255i Only) ................................................. 52 
5.22 
Suction Hose with Integrated Wiring (S 2xx Only) .............................................. 52 
5.22.1
S 254i and S 255i ................................................................................................. 52
 
5.22.2
S 270i - S 276i, S 280i ......................................................................................... 52
 
5.22.3
S 278i ................................................................................................................... 53
 
5.23 
Turbo Brush (S 2xx Only) ................................................................................... 53 
5.24 
Buffer/Bumper Strip (S 3xx and S 4xx Only) ...................................................... 54 
5.24.1
S 3xx .................................................................................................................... 54
 
5.24.2
S 4xx .................................................................................................................... 55
 
5.25 
Grill for HEPA Filter (S 3xx Only) ........................................................................ 55 
6.0 
Fault Diagnosis .................................................................................................. 56 
6.1 
Improved Castor (S 2xx Only) ............................................................................ 56 
6.2 
Dirty Dustbag Compartment (S 27x and S 28x Only) ......................................... 56 
6.2.1
Dustbags, Old and New Versions ........................................................................ 56
 
6.2.2
Modified Dustbag Holder ...................................................................................... 57
 
6.3 
Poor Suction Performance (S 27x and S 28x) .................................................... 58 
6.5 
Poor Blower Performance (S 27x and S 28x) ..................................................... 59 
6.6 
Dustbag Change Indicator (S 3xx) ...................................................................... 59 
6.7 
Suction Power (S 3xx) ........................................................................................ 60 
6.8 
Motor Does Not Operate (S 345i and S 445i) ..................................................... 60 
List of Figures
Figure 1-1: S 247i, S 248i ................................................................................................... 8 
Figure 1-2: S 249i, S 250i ................................................................................................... 8 
Figure 1-3: S 251i, S 252i ................................................................................................... 8 
Figure 1-4: S 254i ............................................................................................................... 8 
Figure 1-5: S 255i, S 256i ................................................................................................... 8 
Figure 1-6: S 234i ............................................................................................................... 9 
Figure 1-7: S 269i, S 270i ................................................................................................... 9 
Figure 1-8: S 271i, S 272i ................................................................................................... 9 
Figure 1-9: S 274i ............................................................................................................... 9 
Figure 1-10: S 275i, S 276i ................................................................................................. 9 
Figure 1-11: S 278i ............................................................................................................. 9 
Figure 1-12: S 280i, S 282i ............................................................................................... 10 
Figure 1-13: S 300i, S 301i ............................................................................................... 10 
Figure 1-14: S 310i, S 313i ............................................................................................... 10 
Figure 1-15: S 321i, S 324i, S326i .................................................................................... 10 
Figure 1-16: S 334i, S 336i, S 338i ................................................................................... 10 
Figure 1-17: S 342i ........................................................................................................... 11 
Figure 1-18: S 344i ........................................................................................................... 11 
Figure 1-19: S 346i, S 347i, S 348i ................................................................................... 11 
Figure 1-20: S 400i, S 401i, S 402i, S 408i ...................................................................... 11 
Figure 1-21: S 410i ........................................................................................................... 11 
S 2xx, S 3xx & S 4xx Canister Vacuums
4
 
 
 
 
 
 
 
 
 
 
 

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