Nuprodx MULTICHAIR BIG WHEEL Series User manual

!ATTENTION: READ BEFORE ASSEMBLING/OPERATING!
ASSEMBLY & PACKING INSTRUCTIONS FOR THE MULTICHAIR BIG WHEEL SERIES
!ATTENTION: READ BEFORE ASSEMBLING/OPERATING!
multichair 4020 multichair 4024 multichair 4020Rx
multichair 4220 multichair 4224 multichair 4220Rx
November 2016

A The multiCHAIR 4020 is shown in Figure 1 (other big wheel
chairs are similar).
B Unpack all parts from the shipping carton. Remove all tape
and/or packing from the chair. Keep shipping materials for future
use. Note the location of padding materials and sheet plastic
which protects parts of your chair.
C Position the seat frame upside down and install the four legs.
Note that the top of each leg has a machined portion approxi-
mately one inch wide. The back two legs have a 1" offset piece
attached to the ends. Install the back two legs so that the offset
points out at a 90-degree angle and note that the small pin must
mate with the holes in the frame (Refer to Figure 3).
DThe top end of each leg should fit easily into the socket of the
frame. Make sure that the legs slide "home" into the sockets. Use
the included ¼" Allen wrench to tighten the bolts located at the
corners of the frame. For ease of future leg height adjustment,
position each leg in the socket so that the adjustment holes face
outward (Refer to Figure 2).
offset leg with pin
seat frame
multiCHAIR 4020 shown
ASSEMBLY INSTRUCTIONS
!ATTENTION: PLEASE READ!
Please see LIMITED WARRANTY of these instructions. If the warranty is not acceptable, contact Nuprodx, Inc. for information about
returning the chair for a refund (Restocking fees and shipping charges will be applied). This chair is designed and intended for indoor
shower and bathroom use. It is not designed for outdoor use and will void the warranty if used in this fashion. If thresholds, shower
curbs or barriers are encountered that exceed ½” in height, the area in question should be brought within the code for disabled acces-
sibility.
Figure 1
Figure 2 Figure 3
SAFETY PRECAUTION!
If the small pins are not mated with the seat frame correctly there
is an extreme risk of the legs dislodging completely from the
chair. This could cause serious injury or even death!
SAFETY PRECAUTION!
If any of the legs are not fitted correctly into the socket of the seat
frame or are not securely tightened there is an extreme risk of the
legs dislodging completely from the chair. This could cause seri-
ous injury or even death!
- PAGE 1 -

mounting screw
slot in bracket
Figure 4
Figure 7
ADDITIONAL ASSEMBLY INSTRUCTIONS
A Seat Cushion Orientation: The standard seat cushion orien-
tation is with the commode opening in the front of the
multiCHAIR. If desired, the commode opening can also be orien-
tated left/right/rear. This can be accomplished by unscrewing the
four button head cap screws that attach the cushion to the frame,
orientating the commode opening to the desired location and
then re-attaching the cushion to the frame with the four screws
using the 5/32” Allen wrench (Refer to Figure 8).
B Cantilever Arms: If desired, the cantilever arms can be
removed from the backrest assembly for storage during traveling.
This can be accomplished by unscrewing the socket head cap
screws that attach the arms to the backrest posts using the 5/32”
Allen wrench. Then remove the arm assemblies from the posts
and re-insert the socke head cap screws into the arm assem-
blies, so they are not lost. To re-install the cantilever arms, simply
follow the steps above in reverse (Refer to Figure 9).
Figure 8
Figure 9
E Turn the chair right side up and install the backrest assembly.
Slide the two backposts into the back of the seat frame and tight-
en the two socket head cap screws using the ¼" Allen wrench
also tighten the four button head capscrews that attach the back
cushion to the back posts(Refer to Figures 4 & 5). For details on
the 20” frames (Refer to Figure 6).
F Install the swing-away footrests by sliding the gooseneck tub-
ing/foot paddle into the clamp that is attached to the front legs
(Refer to Figure 7).
SAFETY PRECAUTION!
Both backrest posts must be completely engaged with the seat
frame and securely tightened. If they are not fitted correctly, there
is a risk of the posts dislodging from the seat frame. This could
cause serious injury or even death!
Figure 5 Figure 6
- PAGE 2 -

Detent
Ball
C Removal of 20”, 22” or 24” Wheels: If desired (for stor-
age/cleaning purposes) the big wheels can be removed from
the leg assemblies by completing the following steps (Refer
to Figure 10).
1) Make sure the wheel locks are in the unlocked position.
2) Press down on the button of the quick release axle located
in the center of the wheel.
3) With the quick release axle button depressed, pull the
entire wheel assembly (handrim/wheel/quick release axle)
outward.
4) To reinstall the wheels, simply reverse the process above.
D Converting the multiCHAIR 4020 to a multiCHAIR
4020rx (This operation is recommended for chairs with 20”
size wheels only): If desired, the 20” wheels can be switched
with the front caster wheels and assembled to be in the front
of the chair (Refer to Figure 12). Note: Longer footrest
clamps can be purchased from Nuprodx as an optional item.
1) Remove the back assembly from the chair: Reverse the
process shown on Page 2 [Assembly Instructions] Step E
(Refer to Figures 4 & 5).
2) Remove the four legs from the seat frame: Reverse the
process shown on Page 1 [Assembly Instructions] Step C
(Refer to Figure 2).
3) Remove the two 5” casters and the footrest clamps from
the front two 11-Hole outer legs (Refer to Figure 13).
4) Remove the two 20” wheels from the axle blocks as shown
in Step C above.
5) Remove the two axle blocks from the 10-Hole offset outer
legs and re-install onto the two 11-Hole outer legs (Refer to
Figure 21 on Page 5).
6) Re-install the two footrest clamps onto the 11-Hole outer
legs and locate them underneathe the axle blocks (Refer to
Figure 14).
Quick Release Axle
Figure 10
Wheel Lock
SAFETY PRECAUTION!
When reinstalling the quick release axle into the axle block,
ensure that the detent balls are engaged by trying to pull out the
axle (Refer to Figure 11). There should be a slight amount of back
and forth movement. If the quick release axle is not reinstalled
into the axle block correctly the whole wheel assembly could dis-
lodge during usage. This could cause serious injury or even
death!
Figure 11
Figure 12
multiCHAIR 4020rx
Axle Block
Footrest Clamp
Figure 13
- PAGE 3 -
Figure 14

OPERATING INSTRUCTIONS
Figure 16
AEnsure all fasteners (bolts/washers) are securely tightened
and all chair parts have been assembled correctly (Refer back
to Assembly Instructions if needed. Contact Nuprodx, Inc. if
unsure of anything).
B Commode Chair: Position the multiCHAIR over the toilet, so
that the center of the commode opening is directly above the
center of the toilet bowl. Adjust the height of the multiCHAIR
accordingly by setting the position of the brass buttons on the
two inner legs to the various adjustment holes on the outer legs
(Note: For height adjustment of the big wheels, refer to Step F
on Page 4). Then lock the caster wheels in place. Note: Make
height adjustments to the multiCHAIR before the user has
transferred onto it (Refer to Figure 16).
C Shower Chair: Position the multCHAIR inside the shower.
Adjust the height of the multiCHAIR accordingly by setting the
position of the brass buttons on the four inner legs to the vari-
ous adjustment holes on the outer legs. Note: Make height
adjustments to the multiCHAIR before the user has transferred
onto it.
SAFETY PRECAUTION!
Ensure that the height of each inner leg is set to make the
multiCHAIR level. If this is not properly done, the multiCHAIR
could tip to one side causing the user to fall. This could result in
serious injury or even death!
- PAGE 4 -
7) Re-install the two 5” casters into the 10-Hole offset outer
legs (Refer to Figure 15).
8) Re-assemble the entire chair by completing Steps C, D, E
& F on Pages 1 & 2 [Assembly Instructions]
Figure 15