Stryker stair-pro 6251 User manual

SSttaaiirr--PPRROO®® SSttaaiirr CChhaaiirr
MMaaiinntteennaannccee MMaannuuaall
6251
6252
EN
6252-109-002 Rev AB.0 2022-06

TTaabbllee ooff CCoonntteennttss
Warning/Caution/Note Definition ..............................................................................................................................3
Summary of safety precautions ................................................................................................................................3
Introduction for service .............................................................................................................................................4
Expected service life ...............................................................................................................................................4
Contact information.................................................................................................................................................4
Serial number location.............................................................................................................................................4
Preventive maintenance ...........................................................................................................................................5
Maintenance record..................................................................................................................................................7
Training record..........................................................................................................................................................8
Service ......................................................................................................................................................................9
Wheel locking force adjustment................................................................................................................................9
Vinyl seat replacement ............................................................................................................................................9
Track belt replacement..........................................................................................................................................10
Track belt reconditioning........................................................................................................................................12
Rear wheel replacement........................................................................................................................................14
Front caster replacement.......................................................................................................................................14
Upper control handle cable replacement.................................................................................................................15
Chair assembly .......................................................................................................................................................17
6251 main frame assembly.....................................................................................................................................28
6252 main frame assembly.....................................................................................................................................29
Upper extension handle..........................................................................................................................................32
Track frame assembly, standard belt .....................................................................................................................33
Internal latch assembly - 6252-001-014 .................................................................................................................35
Internal latch assembly - 6252-001-015 .................................................................................................................36
Cable and pin assembly .........................................................................................................................................37
6 in. molded wheel assembly..................................................................................................................................38
Locking flip-up handle option - 6250-031-000 ........................................................................................................39
Foot tube assembly ................................................................................................................................................40
6251/6252 caster foot support assembly ...............................................................................................................41
6251/6252 lower lift handle/no footrest option - 6250-024-000/6252-028-000......................................................42
6251/6252 extended lower lift handle option - 6250-025-000................................................................................43
Extension handle assembly, right...........................................................................................................................44
Extension handle assembly, left .............................................................................................................................45
6251/6252 footrest option - 6252-027-000 .............................................................................................................46
6252 extended handle/no footrest option - 6252-030-000 .....................................................................................47
6252 extended handle/footrest option - 6252-029-000 ..........................................................................................48
Seat section assembly............................................................................................................................................49
Flip-up handle assembly.........................................................................................................................................50
Lock mechanism assembly ....................................................................................................................................51
6251/6252 vinyl seat option - 6250-020-000 ..........................................................................................................52
6251/6252 ABS seat option - 6250-021-000 ..........................................................................................................53
Seat and backrest options ......................................................................................................................................54
6252 head support options .....................................................................................................................................55
Restraint set, non-absorbant/metal buckles option - 6250-161-000 ......................................................................56
Restraint set, polyester/metal buckles option - 6250-162-000...............................................................................57
Restraint set, polypropylene/plastic buckles option - 6250-160-000 .....................................................................58
6252-109-002 Rev AB.0 1 EN

Vinyl head support option - 6252-001-140 .............................................................................................................59
Elastic oxygen bottle holder option - 6250-140-000 ...............................................................................................60
EN 2 6252-109-002 Rev AB.0

WWaarrnniinngg//CCaauuttiioonn//NNoottee DDeeffiinniittiioonn
The words WWAARRNNIINNGG,CCAAUUTTIIOONN, and NNOOTTEE carry special meanings and should be carefully reviewed.
WWAARRNNIINNGG
Alerts the reader about a situation which, if not avoided, could result in death or serious injury. It may also describe
potential serious adverse reactions and safety hazards.
CCAAUUTTIIOONN
Alerts the reader of a potentially hazardous situation which, if not avoided, may result in minor or moderate injury to the
user or patient or damage to the product or other property. This includes special care necessary for the safe and effective
use of the device and the care necessary to avoid damage to a device that may occur as a result of use or misuse.
NNoottee -- Provides special information to make maintenance easier or important instructions clearer.
SSuummmmaarryy ooff ssaaffeettyy pprreeccaauuttiioonnss
Always read and strictly follow the warnings and cautions listed on this page. Service only by qualified personnel.
WWAARRNNIINNGG
• Do not sand the track teeth. Deformation of the teeth can cause unpredictable chair performance resulting in injury to the
operators and/or occupant.
6252-109-002 Rev AB.0 3 EN

IInnttrroodduuccttiioonn ffoorr sseerrvviiccee
This manual assists you with the service of your Stryker product. Read this manual to service this product. This manual
does not address the operation of this product. See the Operations Manual for operating and use instructions. To view your
Operations Manual online, see https://techweb.stryker.com/.
EExxppeecctteedd sseerrvviiccee lliiffee
The SSttaaiirr--PPRROO stair chair has a seven year expected service life under normal use conditions and with appropriate
periodic maintenance.
CCoonnttaacctt iinnffoorrmmaattiioonn
Contact Stryker Customer Service or Technical Support at: 1-800-327-0770.
Stryker Medical
3800 E. Centre Avenue
Portage, MI 49002
USA
NNoottee -- The user and/or the occupant should report any serious product-related incident to both the manufacturer and the
Competent authority of the European Member State where the user and/or occupant is established.
To view your operations or maintenance manual online, see https://techweb.stryker.com/.
Have the serial number (A) of your Stryker product available when calling Stryker Customer Service or Technical Support.
Include the serial number in all written communication.
SSeerriiaall nnuummbbeerr llooccaattiioonn
A
EN 4 6252-109-002 Rev AB.0

PPrreevveennttiivvee mmaaiinntteennaannccee
Remove product from service before you perform the preventive maintenance inspection. Check all items listed during
annual preventive maintenance for all Stryker Medical products. You may need to perform preventive maintenance checks
more often based on your level of product usage. Service only by qualified personnel.
NNoottee -- Clean and disinfect the exterior of the support surface before inspection, if applicable.
OOppeerraattiioonn SScchheedduullee PPrroocceedduurree
Cleaning and disinfecting Each use See
Cleaning in the Operations
Manual
Inspection For 1-25 calls per month, inspect chair
every 6 months
See checklist below
For 26-200 calls per month, inspect
chair every 3 months
For 201+ calls per month, inspect
chair monthly
SSttaaiirr--TTRREEAADD system belt
reconditioning (Model 6252)
After usage on approximately 500
flights of stairs or if the SSttaaiirr--TTRREEAADD
system performance is sluggish
See
Track belt reconditioning in the
Maintenance Manual
Inspect the following items:
All fasteners secure (reference all assembly drawings)
All welds intact, not cracked or broken
No bent or broken tubing or sheet metal
No debris in wheels
All wheels secure and rolling
Front casters secure, rolling, and swiveling (if equipped)
Wheel locks hold wheels securely when on and clear the wheels when off
Chair unfolds and locks properly
No rips or cracks in seat or backrest
Restraint straps intact and working
Foot end carrying handles extend and lock in place
Head end carrying handles fold and unfold
Upper control handle extends and locks in all positions
SSttaaiirr--TTRREEAADD system mechanism unfolds and locks in place (if equipped)
SSttaaiirr--TTRREEAADD system belt rolls (if equipped)
SSttaaiirr--TTRREEAADD system belt inner cords not showing; replace if necessary (if equipped)
SSttaaiirr--TTRREEAADD system performs as desired; recondition belts if necessary (if equipped)
No lubricants present on the SSttaaiirr--TTRREEAADD system belts or the track frame surfaces
Upper release handle cable not worn or frayed; replace if necessary (Model 6252)
Optional accessories and parts intact and operating properly
6252-109-002 Rev AB.0 5 EN

Product serial number:
Completed by:
Date:
EN 6 6252-109-002 Rev AB.0

MMaaiinntteennaannccee rreeccoorrdd
DDaattee MMaaiinntteennaannccee ooppeerraattiioonn
ppeerrffoorrmmeedd
BByy HHoouurrss
6252-109-002 Rev AB.0 7 EN

TTrraaiinniinngg rreeccoorrdd
TTrraaiinniinngg ddaattee
TTrraaiinneeee nnaammee BBaassiicc ttrraaiinniinngg RReeffrreesshheerr uuppddaattee OOwwnneerr’’ss mmaannuuaall,, iinn--
sseerrvviiccee,, ffoorrmmaall ccllaassss,, eettcc..
EN 8 6252-109-002 Rev AB.0

SSeerrvviiccee
WWhheeeell lloocckkiinngg ffoorrccee aaddjjuussttmmeenntt
TToooollss rreeqquuiirreedd::
• 5/32'' hex wrench
• 7/16'' combination wrench or socket
PPrroocceedduurree::
1. Using the 5/32" hex wrench and 7/16" combination wrench or socket, remove the socket screw from the center of the
lock pedal. Save the screw. The wheel lock is initially assembled with the pedal set at the minimum locking force. The
marker on the pedal (A) is aligned with the marker on the octagonal sleeve (B) (
Wheel locking force adjustment (page
9)).
2. Remove the sleeve (B). Rotate the sleeve counterclockwise to increase the pedal locking force and clockwise to
decrease the locking force. Insert the sleeve into the pedal (
Wheel locking force adjustment (page 9)).
3. Using the 5/32" hex wrench and 7/16" combination wrench or socket, reinstall the socket screw (removed in step 1).
4. Test the pedal locking force and make sure that the pedal holds before you return the product to service.
FFiigguurree 11 –– WWhheeeell lloocckkiinngg ffoorrccee aaddjjuussttmmeenntt
VViinnyyll sseeaatt rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• None
PPrroocceedduurree::
1. Place the seat section on the frame, wrap it around the seat tube, and fit the slots in the seat section over the clips on
the underside of the seat tube (Figure 2). Be sure the “shiny” side of the seat is on the inside.
FFiigguurree 22 –– SSeeaatt sseeccttiioonn ooff tthhee vviinnyyll sseeaatt
2. Tip the chair on its back to allow access to the bottom of the seat tube.
3. Insert both ends of the front strap through the loops in the seat section.
4. Thread the end of the back strap through the buckle and pull it tight.
5. Tip the chair up on its wheels.
6252-109-002 Rev AB.0 9 EN

6. Wrap the back section around the back tube (Figure 3).
FFiigguurree 33 –– BBaacckk sseeccttiioonn ooff tthhee vviinnyyll sseeaatt
7. Insert both ends of the top strap through the loops in the back section.
8. Thread the end of the bottom strap through the buckle and pull it tight.
9. Verify proper operation before you return the product to service.
TTrraacckk bbeelltt rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• (2) 7/16'' wrench
• 3/16'' hex key
• 1/2'' wrench
• 5/32'' hex key
PPrroocceedduurree::
1. Using a 7/16'' wrench and a 3/16'' hex key, remove the socket head cap screw, nut, and washer from the track support
bracket on only one side of the chair (Figure 4).
FFiigguurree 44 –– RReemmoovvee tthhee ssccrreeww,, nnuutt,, aanndd wwaasshheerr FFiigguurree 55 –– TTuurrnn tthhee cchhaaiirr uuppssiiddee ddoowwnn
2. Turn the chair upside down so it is resting on the seat frame and back frame (Figure 5).
3. Using a 1/2'' wrench and a 3/16'' hex key, remove the button head cap screw, nut, spacers, and wheel from the frame on
the same side as the parts removed in step one (Figure 6).
EN 10 6252-109-002 Rev AB.0

FFiigguurree 66 –– RReemmoovvee tthhee wwhheeeell aasssseemmbbllyy FFiigguurree 77 –– RReemmoovvee tthhee ttrraacckk ssppaacceerr ppiivvoottss
4. Using a 5/32'' hex key, remove the two button head cap screws from the track spacer pivots and remove the pivots
(Figure 7).
5. Using two 7/16'' wrenches, remove the hex head cap screw, nut, and washers from both head end track rollers to
remove the rollers (Figure 8).
FFiigguurree 88 –– RReemmoovvee tthhee rroolllleerrss
FFiigguurree 99 –– RReemmoovvee tthhee wwoorrnn bbeellttss
6. Remove the belts by threading them through the wheel support plate on the side where the parts were removed (Figure
9).
7. Thread the new belts through the wheel support plate (Figure 10).
FFiigguurree 1100 –– AAttttaacchh tthhee nneeww ttrraacckk bbeelltt
FFiigguurree 1111 –– UUssee wwrreenncchheess ttoo aappppllyy tteennssiioonn ttoo tthhee
bbeellttss
8. Replace the track rollers, washers, hex head cap screws, and nuts (Figure 11).
9. Use two 7/16'' wrenches to apply the desired tension to each belt and tighten securely (Figure 12).
6252-109-002 Rev AB.0 11 EN

FFiigguurree 1122 –– PPrrooppeerr bbeelltt tteennssiioonn
NNoottee -- To check the tension, pull up on the center of the belt until it is taut. The gap between the belt and the track frame
should measure between 3/8” and 1”.
10.Spin the belts to make sure that they roll freely.
11.Verify proper operation before you return the product to service.
TTrraacckk bbeelltt rreeccoonnddiittiioonniinngg
TToooollss rreeqquuiirreedd::
• (2) 7/16'' wrenches
• Permanent marker
• 50 grit sandpaper
• Sanding block
PPrroocceedduurree::
1. Extend the upper control handle, open the SSttaaiirr--TTRREEAADD system tracks and tip the chair forward until it rests on the
handle and the seat section (Figure 13).
2. Using two 7/16" wrenches, remove the hex head bolt, hex nut, two washers, spacer, and wheel from both sides of the
track frame. Remove the wheel and spacer down in the direction of the floor (Figure 14). Save all parts.
FFiigguurree 1133 –– TTiipp tthhee cchhaaiirr ffoorrwwaarrdd
FFiigguurree 1144 –– RReemmoovvee tthhee wwhheeeell ssppaacceerr iinn tthhee ddiirreeccttiioonn
ooff tthhee fflloooorr
3. Turn both belts over so the small internal teeth are on the outside. Put the belts on the track frame for support while you
sand them.
NNoottee -- New track belts must be installed if the inner cords are exposed on the wear surfaces.
4. For a start/end point reference, use a permanent marker to color a tooth on the belt (Figure 15).
EN 12 6252-109-002 Rev AB.0

FFiigguurree 1155 –– MMaarrkk aa bbeelltt ttooootthh ffoorr rreeffeerreennccee
5. Using a sanding block with 50 grit sandpaper, sand both wear surfaces on the outside edges of each belt. The purpose
is to roughen the surface of the belt just enough to remove the shiny spots caused by normal wear. Do not over sand the
belts (Figure 16 and Figure 17).
WWAARRNNIINNGG -- Do not sand the track teeth. Deformation of the teeth can cause unpredictable chair performance resulting
in injury to the operators and/or occupant.
FFiigguurree 1166 –– SSaanndd tthhee wweeaarr ssuurrffaacceess
A
B
FFiigguurree 1177 –– BBeelltt ssaannddiinngg ssuurrffaacceess
AA: Do not sand track teeth
BB: Belt sanding surfaces
6. Remove all sanding debris from the belts and the track frame.
7. Turn both belts back over so the large teeth are on the outside.
8. Replace the hex head bolt, hex nut, two washers, spacer, and wheel on both sides of the track frame.
9. Use two 7/16" wrenches to apply the desired tension to each belt and tighten securely (Figure 18).
NNoottee -- To check the tension, pull up on the center of the belt until it is taut. The gap between the belt and the track frame
should measure between 3/8" and 1" (Figure 19).
10.Spin the belts to make sure that they roll freely.
6252-109-002 Rev AB.0 13 EN

FFiigguurree 1188 –– UUssee wwrreenncchheess ttoo aappppllyy tteennssiioonn ttoo tthhee bbeelltt FFiigguurree 1199 –– PPrrooppeerr bbeelltt tteennssiioonn
11.Verify proper operation before you return the product to service.
RReeaarr wwhheeeell rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• 1/2'' wrench
• 3/16'' hex key
PPrroocceedduurree::
1. Turn the chair upside down so it is resting on the seat frame and back frame (Figure 20).
FFiigguurree 2200 –– TTuurrnn tthhee cchhaaiirr uuppssiiddee ddoowwnn FFiigguurree 2211 –– RReemmoovvee tthhee wwhheeeell aasssseemmbbllyy
2. Using a 1/2'' wrench and a 3/16'' hex key, remove the button head cap screw, nut, spacers, and wheel from the frame.
Discard the cap screw and nut (Figure 21).
3. Using the supplied fasteners, attach the supplied wheel to the frame.
4. Repeat steps for the other wheel, if necessary.
5. Verify proper operation before you return the product to service.
FFrroonntt ccaasstteerr rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• 3/4” combination wrench
• 3/8” hex wrench with ball end
EN 14 6252-109-002 Rev AB.0

PPrroocceedduurree::
1. Lay the chair on its back.
2. Using a 3/4” combination wrench and a 3/8” hex wrench with ball end, remove the Nylock hex nut (A) that secures the
caster assembly (B) to the foot section (C) (Figure 22). Discard the caster assembly and nut.
C
A
B
FFiigguurree 2222 –– RReemmoovvee ccaasstteerr aasssseemmbbllyy
3. Reverse steps to install the supplied caster assembly and the supplied Nylock hex nut.
4. Verify proper operation before you return the product to service.
UUppppeerr ccoonnttrrooll hhaannddllee ccaabbllee rreeppllaacceemmeenntt
TToooollss rreeqquuiirreedd::
• 5/8'' wrench
PPrroocceedduurree::
1. Pull the cable and raise the extendable upper control handle to the fully extended position (Figure 23).
2. Using a 5/8'' wrench, remove one side of the cable (Figure 24).
6252-109-002 Rev AB.0 15 EN

FFiigguurree 2233 –– RRaaiissee tthhee eexxtteennddaabbllee uuppppeerr ccoonnttrrooll
hhaannddllee
FFiigguurree 2244 –– RReemmoovvee oonnee ssiiddee ooff tthhee ccaabbllee
3. Place the washer on the end of the new cable (Figure 25).
4. Using a 5/8'' wrench, attach one side of the new cable to the chair frame in the hole where the old cable was removed
(Figure 26).
FFiigguurree 2255 –– PPllaaccee tthhee wwaasshheerr oonn tthhee nneeww ccaabbllee
FFiigguurree 2266 –– AAttttaacchh oonnee ssiiddee ooff tthhee nneeww ccaabbllee
5. Repeat steps 2-4 for the other end of the cable.
6. Verify proper operation before you return the product to service.
EN 16 6252-109-002 Rev AB.0

CChhaaiirr aasssseemmbbllyy
6250-001-005 Rev AA (Reference only)
6252-109-002 Rev AB.0 17 EN

6251 6252
EN 18 6252-109-002 Rev AB.0