Otto Bock Blizzard Service Manual
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Otto Bock Blizzard Service Manual

Otto Bock Blizzard Service Manual

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  • Page 1 Blizzard Service Manual...

  • Page 3: Table Of Contents

    Service Manual for the Blizzard Wheelchair for Active Use Table of Contents Page Introduction ........................2 1.1 Preface ......................... 2 1.2 Technical Support ....................2 1.3 Symbol Legend ....................3 General Safety Instructions ..................3 Required Tools and Maintenance Plan................5 3.1 Required Tools ..................... 5 3.2 Maintenance Plan ....................7 Settings / Replacement / Retrofit .................

  • Page 4: Introduction

    Instructions for use Spare parts catalog Blizzard 647G4=D/GB 1.2. Technical Support The Otto Bock Team of your country will be pleased to answer your technical questions. Con- tact addresses and telephone numbers are listed on the last page of this manual.

  • Page 5: Symbol Legend

    Attention! If you do not have an instructions for use manual, you can order one from the manufacturer (see the overview of all Otto Bock Branches "Otto Bock Worldwide"). Attention! Alternatively, you can download documents from our home page at www.ottobock.de...
  • Page 6 Attention! Clean or disinfect the product before starting inspection. See the instructions for use manual for care instructions or specific product inspection information. Attention! Many of the screw fastenings use thread lock or nylock nuts. If you have to undo such screw fastenings, replace the nut or screw with a new nut/screw with thread lock.

  • Page 7: Required Tools And Maintenance Plan

    3 Required Tools and Maintenance Plan 3.1. Required Tools The following list shows you the tools and auxiliaries required for the service. Reversible ratchet handle wrench Torque wrench, Wrenches, sizes 8 mm - 4 mm* and sockets, sizes 8 mm - 4 mm measurement range 5 Nm to 50 Nm Screwdrivers, Allen wrenches, sizes  mm - 6 mm*...
  • Page 8 Workbench as well as a vise with Hand drill Tire mounting levers*, plastic jaws and rubber insert inner tube repair kit*...

  • Page 9: Maintenance Plan

    3.2. Maintenance Plan Customer: Maintenance Plan Blizzard for regular service - Wheelchair for active use - Item Inspection (check list) Component (group) Serial no.: .) Function / setting Damages / Screw connections (refer to 647G4 Instructions for Use) deformations Frame - Frame...

  • Page 10: Settings / Replacement / Retrofit

    4 Settings / Replacement / Retrofit 4.1. - Frame Figure  Figure  4.1.1. Retrofit / Replacement of the Anti-tipper First remove the rear wheels by pressing the button of the quick-release axle with your thumb and pulling off the wheel (Fig. ). Fully loosen the two screws on the front of the rear wheel attachment (Fig.
  • Page 11 Figure 5 Figure 6 4.1.2. Retrofit / Replacement / Setting of the Transport Wheels First proceed as described in section 4...: On both sides, remove the rear wheels and the U-shaped profiles from the rear wheel adapter. Slide the pre-assembled transport wheels on both sides onto the freely accessible rear wheel axle, until the (hexagonal) attachments of the transport wheels are located on the hexagons of the axle (Fig.
  • Page 12 Figure 8 4.1.4. Retrofit / Replacement of the Crutch Holder First proceed as described in section 4...: Remove the rear wheels and the U-shaped profile from the rear wheel adapter. Slide the pre-assembled crutch holder onto the rear wheel axle, which is now freely acces- sible, past the rear wheel adapter, until the (hexagonal) attachment of the crutch holder is located on the hexagon of the axle (Fig.
  • Page 13 Figure 0 4.1.5. Retrofit of the Frame Pads Wrap the frame pads around the front frame tubes as in the picture and close the hook and loop closure (Fig. 0). Use a mild household cleaner to clean the frame pads.

  • Page 14: Component Group B: Footrest

    4.2. - Footrest Figure  Figure  4.2.1. Setting the Lower Leg Length / Replacing the Footrest Loosen the four screws on the inside of the caster attachment device until the footrest bar can be moved in the frame tube (Fig. ). Set the desired lower leg length by moving the footrest ahead or back evenly.
  • Page 15 Figure 5 Figure 6 4.2.3. Setting the Footrest for Short Lower Leg Length Loosen the screws on the outside of the footrest (Fig. 5) and the preset (Fig. 6). Move the footrest to the desired position and first tighten the screws of the preset. Then, rotate the footplate until it has the desired angle and retighten the screws on the outside of the footrest.

  • Page 16: Component Group C: Seat

    4.3.1. Replacing the Seat Upholstery / Bars for Upholstery Fix the Blizzard in the assembly stand. Remove the rear wheels and, if present, the seat cushion and fold the backrest down onto the seat surface. In case of the tension adjustable upholstery, loosen the hook and loop connections to release the tension (Fig.

  • Page 17: Component Group D: Back / Push Handles

    Figure  4.4.1. Replacing the Rear Support Brackets Remove the seat cushion and fold the backrest of the Blizzard down onto the seat surface. Remove the retaining elements on the inside of the rear seat tube using a screwdriver (Fig. ) and push the retaining bolts out of the tube. Now pull the support brackets to the rear out the seat tubes (Fig.
  • Page 18 Figure 5 Figure 6 4.4.3. Replacing the Back Release Using pincers, pinch off the release cable from both key rings (Fig. 5). Slightly bend open the key rings and turn them out of the bolt end (key ring principle / Fig. 6). Turn new key rings into the new release cable, which will be delivered pre-assembled, and then turn the key rings into the bolt ends.
  • Page 19 Figure  4.4.5. Replacing the Push Handles First pull off the bib of the back upholstery. Then remove the upper strap of the upholstery (in case of folding push handles). Loosen the screw connection of the push handles on the rear side of the back tubes (Fig. ) and pull the push handles upwards out of the back tubes.

  • Page 20: Component Group E: Side Panels

    4.5. - Side Panels Figure  Figure  4.5.1. Setting the Side Panels (Standard and Clothing Protector) On both side, open the screws on the eccentric wheels (Fig. ) until you notice that the wheels can rotate freely and the side panel slide on the seat tube. Move the side panel lengthwise into the desired position.
  • Page 21 4.5.3. Replacing the Side Panels (Standard and Clothing Protector) Remove the screws on the eccentric wheel (Fig. ) and completely remove them. (This will also make the stabilizer beneath the seat come loose, see section 4...) Next, remove on both sides the screws of the side panel guides (Fig. 7). You can now completely remove the side panel.
  • Page 22 Figure 5 Figure 6 4.5.5. Retrofit / Replacement of the Armrest The receiver for the armrest replaces the standard rear support bracket of the backrest. Proceed as described in section 4.4.. and replace the support bracket with the receiver for the armrest (Fig. 5). Insert the armrest into the receiver. By shifting the stop in the receiver, the armrests can be set to one of three height positions (Fig.

  • Page 23: Component Group F: Casters

    Figure 8 4.6.1. Adjusting the Caster Wheel Journal Angle Place the Blizzard on an even, level surface. Loosen the counter nut on the underside of the caster journal bearing; about /4 turn will suffice (Fig. 7). Place the supplied bubble level on the caster wheel adapter. Use the Allen screw on the top to adjust the caster wheel journal angle (Fig.
  • Page 24 Figure 40 Figure 4 4.6.3. Replacing the Caster Fork In case of forks with threaded axle: Loosen the retaining ring on the inside of the caster fork and remove it (Fig. 40). Pull the threaded axle with the fork downwards out of the caster wheel journal (Fig. 4). Loosen the screw connection of the axle and remove the axle from the caster fork.

  • Page 25: Component Group G: Rear Wheels

    4.7. - Rear Wheels Figure 4 Figure 4 4.7.1. Horizontal Setting of the Rear Wheel Position First remove the rear wheels. On both sides, loosen the screws on the outside of rear wheel adapter until you can move the adapter on the profiled seat tube (Fig. 4). Slide the rear wheel adapters into the desired position.
  • Page 26 Figure 44 Figure 45 4.7.3. Vertical Setting of the Rear Wheel Position / Replacing the U-shaped Profiles First remove the rear wheels. Fully loosen the two screws on the front of the rear wheel attachment and remove them. Now pull the U-shaped section off to the rear (Fig. 44). For replacement, mount new U-shaped profiles proceeding in the reverse order. To change the setting of the rear wheel position proceed on both sides as described, so that you have the rear wheel axle in your hands.
  • Page 27 4.7.6. Fine Adjustment of the Rear Wheel Axle after Position Change / Tracking Set- ting Place the Blizzard on an even, level surface. If not yet done, loosen the screws of the rear wheel attachment until you can turn the axle by hand (Fig. 47). Place the supplied bubble level on the hexagon of the axle and rotate the axle until it is exactly horizontal (Fig. 48).
  • Page 28 Figure 4 4.7.7. Setting the Quick-release Axle The quick-release axle must be set so that the wheel engages securely and has no play on the axle. Using a wrench hold the quick-release axle on the inner side still, whilst screwing the nut at the head of the quick-release axle in or out until the correct setting is achieved.
  • Page 29 Figure 5 4.7.9. Replacing the Push Rings / Narrow/Wide Mounting Position First remove the complete tire as described in section 4.7.8. Loosen and remove the screw connection of the push ring with the rim. If necessary, replace the worn push ring with a new one.

  • Page 30: Component Group H: Wheel Lock

    4.8. - Wheel Lock Figure 55 Figure 56 4.8.1. Setting the Wheel Lock First make sure that the rear wheel tires have been inflated to the indicated pressure. Loosen the screw on the wheel lock holding device until you can move the wheel lock on the seat tube with your hand (Fig.
  • Page 31 Figure 57 Figure 58 4.8.3. Replacing the Wheel Lock Lever Handle Cover First carefully cut open the worn wheel lock lever handle cover using a box cutter and peel it off the wheel lock lever (Fig. 57). Remove all residues of the old glue and material from the wheel lock lever.
  • Page 32 Figure 60 4.8.5. Replacing the Bracket of the S-type Wheel Lock Open the central screw connection of the S-type wheel lock and remove the nuts (Fig. 60). Remove the bracket and replace it with a new one. Check the wheel lock for firm fit and proper function.
  • Page 33 Figure 6 4.8.7. Assembling / Replacing the Wheel Lock Lever Extension Open the screw connection of the retaining cable on the wheel lock body and completely remove the screw (Fig. 6). Remove the wheel lock lever extension and replace it with a new one.

  • Page 34: Technical Data

    5 Technical Data Overall length (in cm) Rear wheel size 4“ 6“ Seat Rear Front Rear Front Frame angle depth axle position axle position axle position axle position 75° 7.5 .5 85° 8.5 68.5 75° 7.5 .5 85° 85.5 70.5 75°...
  • Page 35 Lower leg length (in cm) Footrest for short lower Standard footrest leg lengths Frame angle min. max. min. max. 75° 8.5 6.5 85° 7.5 40.5 8.5 ) Specified at 0° seat angle, without seat cushion Anterior seat height (in cm) Caster diameter Position “...
  • Page 36 Posterior seat height (in cm) 8. 40.8 Rear wheel attachment, .5 short 40.6 4. Rear wheel attachment, 4.8 44. medium 4. 45.4 Rear wheel 44. 46.6 attachment, 45. 47.7 long 46.4 48. 47.5 48.7 5. 4.8 5. 5.5 5. 54.6 ) Specified at 0°...
  • Page 37 Caster positions / Rear wheel adadapter...
  • Page 40 · Internet: http://www.ottobock.com Versandanschrift für Rücksendungen/Address for Returns Otto Bock HealthCare GmbH  Lindenstraße 13 · 07426 Königsee/Germany Otto Bock HealthCare GmbH has been certified by the German Society for the Certification of Quality Assurance Systems (DQS) in accordance with DIN EN ISO 9001 standard, reg. no. 779 (management system)

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