Miele S 234i Technical Manual Download Page 5

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Technical Information

S 2xx, S 3xx & S 4xx Canister Vacuums

Figure 1-22: S 421i, S 422i, S 424i, S 426i ...................................................................... 11

Figure 1-23: S 434i, S 436i, S 438i ................................................................................... 12

Figure 1-24: S 442i ........................................................................................................... 12

Figure 1-25: S 444i ........................................................................................................... 12

Figure 1-26: S 446i, S 447i, S 448i ................................................................................... 12

Figure 1-27: S 3xx Components ....................................................................................... 13

Figure 1-28: S 4xx Components ....................................................................................... 14

Figure 1-29: 9.3cm Adapter Sleeve to Connect New and Old Accessories ..................... 20

Figure 1-30: 9.3cm Swivel Adapter Sleeve to Connect the Locking Electric Brush.......... 20

Figure 1-31: 20cm Swivel Adapter Sleeve to Connect Lockable Accessories ................. 21

Figure 4-1: S 3xx Dustbag Change Indicator ................................................................... 23

Figure 4-2: S 4xx Dustbag Change Indicator ................................................................... 24

Figure 4-3: Suction Power Curve ..................................................................................... 24

Figure 4-4: Phase-Chopping Control ................................................................................ 27

Figure 5-1: Dustbag Compartment Lid, S 4xx .................................................................. 28

Figure 5-2: Accessory Compartment Lid, Hinges and Springs (S 2xx Shown) ................ 29

Figure 5-3: Dustbag Holder, S 25x ................................................................................... 29

Figure 5-4: Dustbag Holder, S 27x ................................................................................... 30

Figure 5-5: Dustbag Holder, S 3xx ................................................................................... 30

Figure 5-6: S 3xx and S 4xx Dust Channel ...................................................................... 31

Figure 5-7: S 25x Cap Assembly ...................................................................................... 32

Figure 5-8: S 27x Rear Casing ......................................................................................... 33

Figure 5-9: Cap Assembly, S 4xx ..................................................................................... 33

Figure 5-10: Rear Casing, S 25x ...................................................................................... 34

Figure 5-11: Rear Casing, S 27x ...................................................................................... 34

Figure 5-12: Rear Casing, S 3xx ...................................................................................... 35

Figure 5-13: Rear Casing, S 4xx ...................................................................................... 35

Figure 5-14: Foot Switches, S 25x and S 27x .................................................................. 36

Figure 5-15: Foot Switch, S 3xx ....................................................................................... 36

Figure 5-16: Foot Switch, S 4xx ....................................................................................... 37

Figure 5-17: Potentiometer Cover, S 2x4i and S 2x5i ...................................................... 38

Figure 5-18: Catches on Potentiometer Control, S 2x4i and S 2x5i ................................. 38

Figure 5-19: Potentiometer Control, S 2x4i and S 2x5i .................................................... 38

Figure 5-20: Rotary Potentiometer, S 3xx ........................................................................ 39

Figure 5-21: Slide Potentiometer, S 3xx ........................................................................... 39

Figure 5-22: +/- Buttons, S 3xx ......................................................................................... 40

Figure 5-23: Elec/- Buttons, S 3xx ........................................................................ 40

Figure 5-24: S 4xx Slide Potentiometer ............................................................................ 41

Figure 5-25: Foot-Operated Power Selector, S 4xx ......................................................... 42

Figure 5-26: S 4xx Electronic Removal ............................................................................ 43

Figure 5-27: S 27x Plug Housing ...................................................................................... 44

Figure 5-28: Sensor Removal for Models S 280i - S 282i ................................................ 45

Figure 5-29: Cap Assembly with Lug, S 25x Models ........................................................ 46

Figure 5-30: Brake Lever Top Edge, S 25x Models ......................................................... 46

Figure 5-31: S 27x Power Cord Removal ......................................................................... 47

Figure 5-32: S 3xx Power Cord Removal ......................................................................... 47

Figure 5-33: S 25x Motor Assembly ................................................................................. 48

Figure 5-34: S 27x Motor Assembly ................................................................................. 49

Figure 5-35: S 4xx Motor with Holding Bracket ................................................................ 50

Figure 5-36: S 4xx Motor with Central Bearing ................................................................. 51

Summary of Contents for S 234i

Page 1: ...TECHNICAL INFORMATION S 2xx S 3xx and S 4xx Canister Vacuums 2012 Miele USA ...

Page 2: ...x and S 4xx Only 21 4 0 Description of Function 21 4 1 Air Clean Plus Filter System 21 4 1 1 Super Air Clean Filter 21 4 1 2 Active Air Clean Filter 22 4 1 3 S Class Filter 22 4 2 Dustbag Change Indicator 22 4 2 1 S 27x 22 4 2 2 S 3xx 23 4 2 3 S 4xx 24 4 3 Suction Power 24 4 4 Power Regulation 25 4 4 1 Models with Manual Power Selection 25 4 4 2 Automatic Models 25 4 4 3 Booster Setting 26 4 4 4 P...

Page 3: ...eter Suction Power Selector 37 5 9 1 S 2xx 37 5 9 2 S 3xx 38 5 9 3 S 4xx 40 5 10 Electronic S 4xx Only 42 5 11 Fault Overheat Indicator Lamp 43 5 11 1 S 2xx 43 5 11 2 S 4xx 43 5 12 Plug Housing 43 5 12 1 S 25x 43 5 12 2 S 27x 44 5 13 On Off Switch 44 5 13 1 S 25x 44 5 13 2 S 27x 44 5 13 3 S 3xx 44 5 14 Flush Socket Outlet 44 5 14 1 S 25x 44 5 14 2 S 27x 44 5 15 Sensor Automatic Models S 280i S 282...

Page 4: ...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 ...

Page 5: ...Rear Casing 33 Figure 5 9 Cap Assembly S 4xx 33 Figure 5 10 Rear Casing S 25x 34 Figure 5 11 Rear Casing S 27x 34 Figure 5 12 Rear Casing S 3xx 35 Figure 5 13 Rear Casing S 4xx 35 Figure 5 14 Foot Switches S 25x and S 27x 36 Figure 5 15 Foot Switch S 3xx 36 Figure 5 16 Foot Switch S 4xx 37 Figure 5 17 Potentiometer Cover S 2x4i and S 2x5i 38 Figure 5 18 Catches on Potentiometer Control S 2x4i and ...

Page 6: ...Hose with Integrated Wiring 53 Figure 5 40 S 2xx Turbo Brush 54 Figure 6 1 Modified Castor S 2xx 56 Figure 6 2 Dustbag with Raised Rim on Collar S 27x and S 28x 57 Figure 6 3 Dustbag without Raised Rim on Collar S 27x and S 28x 57 Figure 6 4 Modified Dustbag Holder S 27x and S 28x 58 Figure 6 5 S 27x and S 28x Motor Seal and Holder 58 Figure 6 6 Blower Plate for S 27x and S 28x 59 Figure 6 7 S 3xx...

Page 7: ...ply Even with the vacuum switched off supply voltage may be applied to some components Do not leave the vacuum unattended when it is plugged in Turn off and unplug the vacuum before opening the cover After work has been completed a visual as well as an operational check should always be performed 1 2 Cleaning and Care 1 2 1 Vacuums and Accessories The vacuum cleaner and other plastic components ca...

Page 8: ...Technical Information 8 S 2xx S 3xx S 4xx Canister Vacuums Figure 1 1 S 247i S 248i Figure 1 2 S 249i S 250i Figure 1 3 S 251i S 252i Figure 1 4 S 254i Figure 1 5 S 255i S 256i ...

Page 9: ...Technical Information 9 S 2xx S 3xx S 4xx Canister Vacuums Figure 1 6 S 234i Figure 1 7 S 269i S 270i Figure 1 8 S 271i S 272i Figure 1 9 S 274i Figure 1 10 S 275i S 276i Figure 1 11 S 278i ...

Page 10: ...Technical Information 10 S 2xx S 3xx S 4xx Canister Vacuums Figure 1 12 S 280i S 282i Figure 1 13 S 300i S 301i Figure 1 14 S 310i S 313i Figure 1 15 S 321i S 324i S326i Figure 1 16 S 334i S 336i S 338i ...

Page 11: ...rmation 11 S 2xx S 3xx S 4xx Canister Vacuums Figure 1 17 S 342i Figure 1 18 S 344i Figure 1 19 S 346i S 347i S 348i Figure 1 20 S 400i S 401i S 402i S 408i Figure 1 21 S 410i Figure 1 22 S 421i S 422i S 424i S 426i ...

Page 12: ...mation 12 S 2xx S 3xx S 4xx Canister Vacuums Figure 1 23 S 434i S 436i S 438i Figure 1 24 S 442i Figure 1 25 S 444i Figure 1 26 S 446i S 447i S 448i 1 1 Type Construction Canister vacuum cleaner 1 1 1 S 3xx Components ...

Page 13: ...ing on model Group plug 2 Rear casing Filter system Cable rewind Motor Park System switch Plug connectors 3 Dustbag compartment casing Accessory compartment with lid Suction hose connection with shutter Dustbag change indicator Accessories Hinges Slip ring system for electrobrush S 324i and S 346i only 4 Casing base Motor protection filter Dustbag holder Bumper strip Storage slot for floor attachm...

Page 14: ...top Cable rewind Motor 2 Integrated in dustbag compartment casing Accessory compartment with lid Dustbag change indicator Suction hose connection With Automatic models Connection stub for negative pressure hose 3 Integrated in housing base Motor protection matted filter Dustbag holder Bumper strip Electrobrush socket depending on model With Automatic models Negative pressure switch ...

Page 15: ...280i S 282i Dustbag change indicator x x x x x x Automatic cord rewind x x x x x x Electric brush socket x x x x Overheating indicator x x x Suction power selection Rotary knob x Foot switch x x x Handle of wired suction hose x Automatic x Model S 300i S 301i S 310i S 313i S 321i S 324i S 326i Suction power regulation via air inlet valve x x x x x x x Rotary switch x x Slide switch x x x Telescopi...

Page 16: ...i S 342i S 344i S 346i S 347i S 348i Suction power regulation via air inlet valve x x x x x x x x buttons x x x Fully electronic buttons x x x x x AUTO setting x x x x x Booster function x x x Telescopic suction tube x x x x1 x x x x Universal floor attachment SBD 304 SBD 304 SBD 304 SBD 304 SBD 264 SBD 264 SBD 264 SBD 264 Super Air Clean filter x o o o x o o o Active Air Clean filter o x o x o x ...

Page 17: ...uper Air Clean filter x x x x Active Air Clean filter x S Class filter x x Electrobrush socket x x x Overheating warning light x x x x x Blower connection x Separate x x x Separate Separate Radius of operation 10m 10m 10m 10m 10m 10m 10m Model S 434i S 436i S 438i S 444i S 446i S 447i S 448i Suction power regulation via air inlet valve x x x x x x x Rocker switch x x x Fully electronic buttons x x...

Page 18: ...o ply paper bag Dustbag capacity 4L Operational radius 9 5m Weight including accessories 7 9kg Electrical connection 220 230 V 50Hz Fuse rating 10A slow trip switch Safety classification Doubly insulated Test certificate VDE interference suppression symbol Noise level 74 5dBA 1 3 2 S 269i S 282i Suction pressure 240mbar Throughflow rate 56 L sec Dustbag Two ply paper bag Dustbag capacity 5 8L Oper...

Page 19: ...y insulated Test certificate VDE interference suppression symbol Max suction power 290W 320W 210W Rated power 1200W 1500W 1200W 1600W 800W Noise level 73dBA 73dBA 71 5dBA 1 3 4 S 4xx S 4xx Booster Suction pressure 260mbar 280mbar Throughflow rate 63 L sec 68 L sec Dustbag capacity 5 8L Operational radius 10m Electrical connection 230VAC 50Hz Fuse rating 10A slow trip switch Safety classification D...

Page 20: ...adiator brush universal brush large area floor attachment floor brush for hard floor surfaces cloth filter bag electric brush S 017 with cable clips for standard suction hose for vacuum cleaner w socket electric brush S 019 and hose with integrated wiring for vacuum cleaners w socket turbo brush for all models S 269i S 282i Radiator brush universal brush large area floor attachment floor brush for...

Page 21: ...t match the connection cable must be changed as appropriate 4 0 Description of Function 4 1 Air Clean Plus Filter System The dustbag is made of two ply filter paper and acts to filter out up to 99 6 of the dust in the ambient air taken into the cleaner Depending on model either an Active Air Clean filter or an S class filter is also supplied It is fitted in a cassette at the exhaust opening Models...

Page 22: ...2 1 S 27x Differential pressure indicators have now been modified as with the S 25x series The following simple test with a new dustbag and the maximum power setting shows which type is installed Modified differential pressure indicator When a hand is placed over the suction inlet then the red marking in the indicator becomes visible Previous type of differential pressure indicator When tested as ...

Page 23: ...el in the dust compartment rises This increased negative pressure evacuates the dustbag change indicator through its opening Figure 4 1 Item 3 and moves the red indicator Figure 4 1 Item 2 so making it visible The point at which the indicator shows that the dustbag should be changed can be modified by the adjustment screw Figure 4 1 Item 1 see Section 6 6 If flour or fine mineral dust is vacuumed ...

Page 24: ...ility is reduced and the negative pressure level in the bag is reduced At the same time the negative pressure in the dust compartment rises This increased negative pressure evacuates the dustbag change indicator through its opening Figure 4 2 Item 3 and removes air from the concertina hose Figure 4 2 Item 2 This then collapses and the visible indicator Figure 4 2 Item 1 advances along its scale 4 ...

Page 25: ...d so allows only a low negative pressure to develop but has a high rate of air throughput Note The above shows that the figure given on the data plate e g P 1500W is only a description of motor power and not a true guide to the vacuum cleaner suction power 4 4 Power Regulation 4 4 1 Models with Manual Power Selection Power control with models S 310i S 338i and S 410i S 438i is achieved by phase ch...

Page 26: ...hen the booster button is pressed the electronic control operates the motor at its maximum power setting for 10 seconds This function can be chosen twice in succession A third attempt to operate this feature will not be accepted In this case the booster LED flashes as after a second boost the electronic control introduces a pause of 60 seconds before the booster function can be operated again With...

Page 27: ... R1 C1 RL When UC reaches the switching level for the diac D1 the capacitor C1 is discharged in a pulse via the gate of D2 This pulse switches the triac D2 making it conductive At the next zero crossover point the triac D2 blocks the sinusoidal wave and the process repeats itself Figure 4 4 shows the chopping of the half wave The phase angle α is directly proportional to the potentiometer setting ...

Page 28: ...far as possible and then pull upwards to remove The hinges may also come off 5 1 3 S 3xx 1 Open the dustbag compartment lid fully 2 Push the dustbag compartment lid to the rear to release its clip retainers 3 Pull the dustbag compartment lid upwards to remove it 5 1 4 S 4xx 1 Open the dustbag compartment lid until it is vertical The hinges Figure 5 1 Item 4 engage and hold it in this position 2 Us...

Page 29: ...nd install the spring 3 When closing the lid ensure that the spring arm Figure 5 2 Item 3 is located in its guide slot Figure 5 2 Item 2 Figure 5 2 Accessory Compartment Lid Hinges and Springs S 2xx Shown 5 3 Dustbag Holder 5 3 1 S 25x 1 Release the holder s locking tabs Figure 5 3 Item 2 with a screwdriver and then remove it 2 When re installing ensure that the spring Figure 5 3 Item 1 is correct...

Page 30: ...re installing the holder The longer spring arm Figure 5 4 Item 4 must point downwards d Tighten screw Figure 5 4 Item 5 Figure 5 4 Dustbag Holder S 27x 5 3 3 S 3xx 1 Open the dustbag compartment lid fully 2 Unsnap and pull up the dustbag holder in the direction of the arrow 3 Inserting a dustbag With the dustbag folded slide it into its holder Close the dustbag compartment lid Figure 5 5 Dustbag H...

Page 31: ...nnel to the underside of the dust compartment lid 3 Separate the dust channel assembly from the dust compartment lid 5 4 3 S 3xx and S 4xx 1 Open the dustbag compartment lid fully 2 Unscrew the 4 Phillips screws Figure 5 6 Item 1 3 Remove the dust channel Figure 5 6 Item 2 Figure 5 6 S 3xx and S 4xx Dust Channel 5 5 Dustbag Change Indicator 5 5 1 S 25x 1 Remove dust channel first then remove the a...

Page 32: ... 2 Unscrew the retaining screw and remove the part 3 When re installing ensure that the lid opener spring is correctly located 5 6 Cap Assembly 5 6 1 S 25x 1 Remove the dust compartment lid Section 5 1 2 Remove the 2 Phillips screws securing the cap assembly to the base 3 Lift up the cap assembly and pull forward to remove it from the base Figure 5 7 S 25x Cap Assembly Note Before installing the c...

Page 33: ...securing the cap assembly to the base 3 Unsnap the cap assembly at the front and remove it 5 6 4 S 4xx 1 The cap assembly is clipped onto the rear casing and held with 2 Phillips screws Figure 5 9 Item 1 2 Remove the screws and lift off the cap assembly The on off and cord rewind foot switches are now accessible 3 The electronic control lamp and power selector can now also be accessed and removed ...

Page 34: ...ble 4 The complete foot switch assembly can be removed by unscrewing its retaining screws Figure 5 10 Item 2 Figure 5 10 Rear Casing S 25x 5 7 2 S 27x Unscrew the screws Figure 5 11 Item 1 and remove the rear casing Figure 5 11 Item 2 Figure 5 11 Rear Casing S 27x 5 7 3 S 3xx 1 Remove the dustbag compartment lid Section 5 1 2 Remove the filter insert 3 Remove the cap assembly Section 5 6 4 Remove ...

Page 35: ...ly Section 5 6 2 Remove the 4 Phillips screws Figure 5 13 Item 1 3 Lift the rear casing and disconnect its plug connections 4 Remove the rear casing The motor and cord reel are attached to it 5 After unplugging the connection wires the cord reel can be removed from its holders on the rear casing Figure 5 13 Rear Casing S 4xx Note The cord reel should only be opened with a special bit tool no C 600...

Page 36: ...ure 5 14 Foot Switches S 25x and S 27x 5 8 2 S 3xx 1 Press the foot switch Figure 5 15 Item 1 down 2 At the same time use a small screwdriver to release the catch Figure 5 15 Item 2 3 Remove the foot switch upwards from the cap assembly Figure 5 15 Foot Switch S 3xx 5 8 3 S 4xx 1 Remove the cap assembly Section 5 6 2 Loosen the on off and cord rewind foot switches Use a screwdriver to release the ...

Page 37: ...and change the potentiometer 2x4i 2x5i 1 Release the catch Figure 5 17 Item 2 with a small screwdriver and remove the switch cover Figure 5 17 Item 1 2 The potentiometer control Figure 5 19 Item 3 can be removed after releasing the catches Figure 5 18 Item 1 3 The toothed belt Figure 5 19 Item 1 can be replaced when the indicator cylinder Figure 5 19 Item 4 is levered from its holder ...

Page 38: ...re replacing the complete potentiometer assembly Figure 5 19 Item 3 and the indicator cylinder Figure 5 19 Item 4 ensure the following The cam Figure 5 19 Item 2 of the belt drive cog must point upwards and the indicator cylinder should be set to show the lowest setting Automatic for S 280i Note For S 278i the suction power selector is on the handle of the wired hose Section 5 22 5 9 2 S 3xx May i...

Page 39: ...mall screwdriver if necessary 3 Remove the Phillips screw 4 Use a small screwdriver to release the spade connections from the white terminal block mark tag all connections before disconnecting them 5 Release the overheat light and potentiometer from the cap assembly Figure 5 20 Rotary Potentiometer S 3xx Figure 5 21 Slide Potentiometer S 3xx ...

Page 40: ...r Vacuums Figure 5 22 Buttons S 3xx Figure 5 23 Electronic Buttons S 3xx 5 9 3 S 4xx Rotary potentiometer 1 Carefully ease off the switch knob using a lid opener part no 3051670 2 Use a small screwdriver to hold the clip fitting and press gently on the ...

Page 41: ...se to its end stop locate the cylinder in the axial guide Figure 5 24 Item 1 and clip the holder with potentiometer into the guide slit Figure 5 24 Item 5 Figure 5 24 S 4xx Slide Potentiometer Foot operated power selector 1 Remove the cap assembly Section 5 6 2 Loosen the on off and cord rewind foot switches Use a screwdriver to release the retaining clips at Figure 5 25 Item 3 and push out the fo...

Page 42: ...xx Only 1 Remove the foot switch assembly Section 5 8 2 Unscrew the group plug Figure 5 26 Item 2 from the underside Take care to note its positioning 3 Release the retaining clips at the rear Figure 5 26 Item 1 and front Figure 5 26 Item 2 of the power selector switch Figure 5 26 Item 3 and remove the selector switch 4 Slide out the fascia piece Figure 5 26 Item 4 5 Unclip the electronic s retain...

Page 43: ...t switch assembly Section 5 8 The indicator lamp s should always be pushed out from below as they are clipped into place 5 11 2 S 4xx The lamp can be removed from below by gently pulling its connection wires 5 12 Plug Housing 5 12 1 S 25x 1 Remove the cap and foot switch assemblies Sections 5 6 and 5 8 2 Release the retaining clips and remove the plug housing ...

Page 44: ... S 27x Dismantle the cap and foot switch assemblies Sections 5 6 and 5 8 to access the switch 5 13 3 S 3xx 1 Remove the cap assembly Section 5 6 2 Release the switch from the cap and disconnect its electrical connections 5 14 Flush Socket Outlet 5 14 1 S 25x Remove the Phillips screw securing the plastic strip to the underside of the vacuum base The plastic strip will then snap out allowing access...

Page 45: ...d Reel 5 16 1 S 23x 1 Remove the cap assembly Section 5 6 2 Remove the Phillips screw securing the cord reel to the rear casing 3 Release the cord reel from the rear casing 4 Disconnect the cord reel electrical connections 5 16 2 S 25x 1 Remove the cap assembly Section 5 6 and remove the reel retaining screw s Phillips Remove the cord reel and then disconnect its electrical connections 2 When repl...

Page 46: ...6 2 Remove the Phillips screw securing the cord reel 3 Remove the Phillips screw securing the terminal block next to the cord reel 4 Ease open the group plug retaining lug and disconnect the plug 5 Remove the cord reel upwards Note The cord reel must only be installed when the cord is fully wound in This ensures correct operation of the rewinding mechanism Before the cord reel is clipped into plac...

Page 47: ...lastic strip from the underside of the vacuum 2 Disconnect the power cord at the terminal block or the sensor S 280i Figure 5 31 S 27x Power Cord Removal 5 17 2 S 3xx 1 Remove the cord reel Section 5 16 2 Pull out and unwind the power cord Figure 5 32 Item 1 3 Block the drum securely to prevent it from rewinding 4 Remove the 2 screws securing the upper part of the cord reel Figure 5 32 Item 2 5 Ea...

Page 48: ...ts is shown in Figure 5 33 Important When re installing the motor care must be taken to ensure that the rubber cushion Figure 5 33 Item 3 and the motor seal Figure 5 33 Item 13 are correctly located Figure 5 33 S 25x Motor Assembly 1 Retaining screw 11 Retaining screw 2 Holder 12 Bracket 3 Rubber cushion 13 Motor seal 4 NTC resistor 14 Motor 5 Retaining screw 15 Plug 6 Thermostat 16 Plug housing 7...

Page 49: ...m 4 and the motor seal Figure 5 34 Item 7 are correctly located The speed control will vary depending on the type of power selector switch installed Figure 5 34 S 27x Motor Assembly 1 Motor brushes 8 Motor 14 Speed control electronic EDL 202 S 271i S 276i EDL 302 S 280i S 282i EDL 402 S 278i 2 Clamping bracket 9 Retaining screw 15 Retaining screw 3 Retaining screw 10 Holding bracket 16 Plug 4 Rubb...

Page 50: ...otor seal is positioned correctly 3 Reinstall the motor in the rear casing 5 18 4 S 4xx Motor with holding bracket 1 Unscrew the rear casing Section 5 7 2 After lifting the rear casing the holding bracket Figure 5 35 Item 1 can be removed thus releasing the motor Figure 5 35 S 4xx Motor with Holding Bracket Motor with central bearing 1 Unscrew the rear casing Section 5 7 2 Unclip and release the c...

Page 51: ...ections 5 19 2 S 4xx 1 Remove the 2 Phillips screws securing the electronic 2 Pull out the electronic from its plugs on the motor 5 20 Motor Brushes 5 20 1 S 3xx 1 Remove the motor Section 5 18 2 Pull off the rear holding plate on the motor 3 Remove 2 screws from each brush 4 Remove the brushes Note When the brushes need replacing both must always be changed at the same time 5 20 2 S 4xx 1 Remove ...

Page 52: ...d S 255i Only 1 Unscrew the retaining screws under the socket 2 Remove the cord cover 5 22 Suction Hose with Integrated Wiring S 2xx Only 5 22 1 S 254i and S 255i This has a built in socket in the handle for installing the S 016 electric brush Figure 5 37 S 254i and S 255i Suction Hose with Integrated Wiring 5 22 2 S 270i S 276i S 280i Wired hose with built in socket in the handle for the S 016 el...

Page 53: ...ed control and built in socket in the handle for the S 016 electric brush Figure 5 39 S 278i Suction Hose with Integrated Wiring 5 23 Turbo Brush S 2xx Only Unscrew the screws Figure 5 40 Item 2 to remove the cover Figure 5 40 Item 1 All brush parts are then accessible Note 2 wire connection cable Note 3 wire connection cable Suction power selector slide potentiometer on the handle ...

Page 54: ...rush 5 24 Buffer Bumper Strip S 3xx and S 4xx Only 5 24 1 S 3xx 1 The bumper strip around the base casing also acts as a seal for the dustbag and motor compartments 2 Remove the cap assembly Section 5 6 3 Remove the 2 Phillips screws under the carrying handle 4 Unfasten the bumper strip ...

Page 55: ...artments 1 To remove the bumper strip first unscrew the two Phillips screws in the carrying handle 2 Remove the dustbag compartment lid Section 5 1 and the rear casing Section 5 7 The bumper strip can now be unfastened When re installing ensure that it is seated correctly 5 25 Grill for HEPA Filter S 3xx Only 1 Remove the dust compartment lid Section 5 1 2 Loosen the 2 Phillips screws securing the...

Page 56: ...ares department under part no 3594262 Figure 6 1 Modified Castor S 2xx 6 2 Dirty Dustbag Compartment S 27x and S 28x Only 6 2 1 Dustbags Old and New Versions Possible cause The raised rim Figure 6 2 Item 3 on the dustbag collar Figure 6 2 Item 1 may indent and deform the sealing ring on the dust guide Figure 6 2 Item 2 A dustbag without a raised rim on the collar Figure 6 3 Item 1 can then not for...

Page 57: ...d S 28x Remedy In both cases replace the dust guide sealing ring part no 3430580 6 2 2 Modified Dustbag Holder A check should be made to establish whether the modified holder with a catch Figure 6 4 Item 2 to hold the dustbag Figure 6 4 Item 1 is installed The modified holder part no 3558641 prevents the dustbag from sliding out of the holder when the compartment lid is closed ...

Page 58: ... Suction Performance S 27x and S 28x Possible cause Motor seal Figure 6 5 Item 1 has slipped Remedy 1 Unscrew the mounting panel and install the motor seal holder Figure 6 5 Item 2 part no 3840800 onto the mounting panel Figure 6 5 Item 3 from below 2 Carry out a test run Figure 6 5 S 27x and S 28x Motor Seal and Holder ...

Page 59: ...tment open the accessory compartment lid 3 Close the dustbag compartment and install the suction hose onto the blower outlet in the accessory compartment 4 After blowing has been completed re install the Air Clean filter Figure 6 6 Blower Plate for S 27x and S 28x 6 6 Dustbag Change Indicator S 3xx The point at which the indicator shows that the dustbag should be changed can be modified by turning...

Page 60: ...eals in the motor compartment and at the exhaust filter are seated correctly and undamaged 6 8 Motor Does Not Operate S 345i and S 445i Fault When the brushes are worn out the appliance cannot be switched on Possible cause When the appliance is switched on gate 1 on triac D1 is activated D1 becomes conductive Voltage is now applied to winding L1 As the brushes are worn the voltage is not applied t...

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