Orthofab Prima 4 User manual

01218-0-00_rev20211126
USER'S MANUAL

Give this manual to the wheelchair occupant or the assistant if the
occupant is unable to read it.
Please read the entire manual before using the wheelchair. Please
refer to this manual as needed and pay close attention to the warnings
until you are familiar with them. For electrically powered wheelchairs,
pay close attention to the operating rules for the control system and
battery charger.
If you have questions, please consult a technician at an authorized
service centre or contact our customer service department at: 1-800-
463-5293
Centre:
Address:
Phone:
Adjustments to your wheelchair should only be performed by health
care professionals. Improper adjustments can cause injury and/or
damage to the occupant, the assistant, the wheelchair, or the
environment.
NEVER install accessories that are not authorized and approved by
. Always consult a health care professional for any
modifications to your wheelchair.
Please read the entire manual describing the control system of your
Oasis PC or PP electrically powered wheelchair before first use, along
with the battery charger manual. They are provided for your safety.

As Quebec's only manufacturer of manual and electrically powered and tilt wheelchairs, is
proud to offer high-quality wheelchairs, adapted to your needs and to your seating comfort, and we thank
you for selecting one of our products. products comply with Quebec standard BNQ 6645-
001 (2019), which specifies technical and documentary requirements for manufacturers of mobility devices.
Our team is always ready to answer your comments and questions, guided by our commitment to your
satisfaction and to providing the best possible service.
WARRANTY
has a comprehensive warranty on mechanical and electronic parts and components.
This warranty does not apply in case of breakage due to negligence,
abuse and/or unauthorized installation of components.
is not liable for any damage to persons or property resulting from
improper or negligent use of its products, lack of care, or
modifications made without its written consent.
The Prima 4 and Prima R (“Robust”) have different
requirements and may have differences in operating
procedures. Where required, this will be noted in the manual.

1. SAFETY RULES................................................................................................................................................... 6
1.1. General Information.........................................................................................................................................6
1.1.1. BEFORE YOU HIT THE ROAD .....................................................................................................................6
1.1.2. GETTING AROUND IN A WHEELCHAIR......................................................................................................7
1.1.3. CROSSING A SLOPE...................................................................................................................................8
1.1.4. TRANSFERRING.........................................................................................................................................9
1.1.5. MISCELLANEOUS HANDLING..................................................................................................................10
1.1.6. CLEANING AND DISINFECTING ...............................................................................................................11
1.2. RECOMMENDED USE .....................................................................................................................................11
2. TECHNICAL INFORMATION ............................................................................................................................. 12
3. ADJUSTMENTS................................................................................................................................................ 13
3.1. LEG SUPPORT ASSEMBLY................................................................................................................................13
3.1.1. LENGTH ADJUSTMENT ...........................................................................................................................13
3.1.2. CHANGING THE ANGLE OF THE ADJUSTABLE ANGLE FOOT SUPPORT, SINGLE AND FULL WIDTH ........14
3.1.3. CHANGING THE POSITION (DEPTH) OF THE ADJUSTABLE ANGLE PLATE ...............................................14
3.1.4. RETRACTING AND REMOVING THE LEG SUPPORT ASSEMBLY ...............................................................15
3.1.5. TWO-PIECE FULL-WIDTH PLATE .............................................................................................................16
3.1.6. DEPTH ADJUSTMENT OF HEEL SUPPORT STRAP ....................................................................................17
3.1.7. ADJUSTING THE FLAT PADDED LOWER LEG SUPPORT...........................................................................18
3.2. ARM SUPPORT................................................................................................................................................19
3.2.1. ADJUSTING THE REMOVABLE T-SHAPED ARM SUPPORT.......................................................................19
3.2.2. ADJUSTING THE REMOVABLE AND FOLDABLE U-SHAPED ARM SUPPORT ............................................20
3.2.3. ADJUSTING THE REMOVABLE T-SHAPED ARM SUPPORT.......................................................................21
3.3. ANGLE-ADJUSTABLE BACK SUPPORT..............................................................................................................22
3.3.1. BACK SUPPORT ANGLE ADJUSTMENT....................................................................................................22
3.3.2. CHANGING BACK SUPPORT HEIGHT.......................................................................................................23
3.4. INSTALLING THE BACK SUPPORT TENSION BAR .............................................................................................24
3.5. SEAT................................................................................................................................................................ 25
3.5.1. REMOVING THE SEAT SLING...................................................................................................................25
3.5.2. ADJUSTING THE SEAT SLING TENSION ...................................................................................................26
3.6. FLOOR-TO-SEAT HEIGHT AND CENTRE OF GRAVITY.......................................................................................27
3.6.1. FRONT FLOOR-TO-SEAT HEIGHT ADJUSTMENT. ....................................................................................27
3.6.2. REAR FLOOR-TO-SEAT HEIGHT ADJUSTMENT........................................................................................28
3.6.3. ADJUSTING THE CENTRE OF GRAVITY ....................................................................................................29
3.7. REAR WHEELS.................................................................................................................................................30
3.7.1. THREADED AXLES ...................................................................................................................................30
3.7.2. WHEEL WIDTH ADJUSTMENT.................................................................................................................31
3.7.3. AIR TIRE PRESSURE.................................................................................................................................31
3.8. FORK BRACKET ...............................................................................................................................................32
3.8.1. PERPENDICULAR FORK ALIGNMENT ......................................................................................................32
3.8.2. FORK BRACKET ORIENTATION................................................................................................................33
3.9. LOCKING BRAKES............................................................................................................................................34
3.9.1. BRAKE POSITION ADJUSTMENT .............................................................................................................34
3.9.2. CHANGING OR INSTALLING A BRAKE LEVER EXTENSION .......................................................................36
3.9.3. CHANGING THE BRAKE LEVER ANGLE (push brake only) .......................................................................36
3.10. ANTI-TIPS.................................................................................................................................................... 38

3.10.1. HEIGHT ADJUSTMENT OF ANTI-TILT DEVICES........................................................................................38
3.11. WHEELCHAIR HANDLING............................................................................................................................38
3.11.1. TO OPEN THE WHEELCHAIR ...................................................................................................................38
3.11.2. TO FOLD THE WHEELCHAIR....................................................................................................................40
3.12. HEIGHT AND DEPTH ADJUSTABLE HEAD SUPPORT ....................................................................................40
3.13. ADJUSTABLE TENSION BACK SUPPORT ......................................................................................................42
3.14. LOCKING BRAKES........................................................................................................................................44
3.14.1. ENGAGING –RELEASING PUSH-TYPE BRAKES........................................................................................44
3.14.2. ENGAGING –RELEASING THE ANTI-REVERSE.........................................................................................45
3.15. ANTI-TIP DEVICE .........................................................................................................................................46
3.15.1. TO REMOVE OR RETRACT.......................................................................................................................46
3.15.2. RETRACTING...........................................................................................................................................46
3.16. PELVIC POSITIONING BELT .........................................................................................................................47
3.17. HIP BELT .....................................................................................................................................................47
3.18. SPECIALIZED TRANSIT .................................................................................................................................48
3.18.1. INSTRUCTIONS FOR SPECIALIZED TRANSIT ............................................................................................53
4. MAINTENANCE ............................................................................................................................................... 55
5. TROUBLESHOOTING GUIDE ............................................................................................................................ 57
6. WARRANTY .................................................................................................................................................... 58
AUTHORIZED CENTRES ........................................................................................................................................... 61

1. SAFETY RULES
1.1. General Information
(Applies to all wheelchairs)
The driving settings should only be adjusted and/or modified by a health
care professional or an authorized service technician. Wheelchair use
should be based on the occupant's cognitive and physical abilities. Only
a qualified healthcare professional should provide an opinion in this
regard.
1.1.1. BEFORE YOU HIT THE ROAD
Check:
•Parking brakes engaged;
•Anti-tip device installed;
•Sufficient tire pressure;
•Stable seating position;
•Back support raised;
•Removable and/or retractable leg support and arm support locked;
•Lowered leg support;
•Pelvic positioning belt;
•Tilt mechanism in driving position;
•Check that nothing interferes with the wheels (scarf, umbrella, coat
hanging from the back support, loose clothing, etc.) and that no heavy
objects are hanging from the back support;
•If you own an Oasis PC, check that the battery is sufficiently charged and that
the cables of the control box and parking light switch are correctly positioned to
prevent wheel lock or interference with the environment;
•If you own an Oasis, check that the rubber protector under the joystick tip is in
good condition (if not, have it repaired immediately).
Never allow a child to play with or on the wheelchair, whether or not the
occupant is sitting in it.

1.1.2. GETTING AROUND IN A WHEELCHAIR
•Always use the pelvic positioning belt and adjust it properly;
•When faced with an obstacle, stop, and move forward gradually;
•Avoid slippery and uneven surfaces;
•Avoid sudden and abrupt turns;
•If unsure of surface conditions, bypass the area or avoid venturing out;
•If weather conditions are extreme or change abruptly, find shelter as soon as
possible;
•Always make sure you are visible;
•Do not pull a trailer or carry passengers;
•Avoid hanging objects on the back support.

1.1.3. CROSSING A SLOPE
•The manual wheelchair can negotiate slopes at low speed, with a maximum incline of
10°, external or internal, and a length of at least 3 metres, alone or with an assistant.
The assistant must always be at the back of the wheelchair, whether ascending or
descending, and should hold the back support posts.
•Climb and descend slopes in a straight line, directly along the slope's axis, thus
reducing the risk of a sideways rollover.
•Do not approach slopes. If it is unavoidable, make sure you never climb or
descend diagonally and always face forward. For manual and tilt wheelchairs, it
is strongly recommended to approach slopes with an assistant, regardless of
angle.
Comply with the above conditions to ensure the wheelchair's
stability and ability to control the desired trajectory.
Ascending or descending an incline, either independently or
with an assistant, is possible if the consulting or prescribing
health care professional is satisfied that the occupant has the
physical and cognitive skills to do so.

1.1.4. TRANSFERRING
•Fold down foot support plates;
•We recommend that you remove the leg supports before transferring;
•Always apply the brakes before transferring or before sitting in the wheelchair;
•Never lean forward or backward to reach an object;
•Position yourself sideways to the object to be reached, as close as possible;
•Use the arm support transfer supports to help you stand up, after checking that they
are securely in place;
•Do not sit on the back support if it is reclined;
•Never stand on the foot supports;
•Never sit on the arm supports;
•Always switch off the control box before transferring or transporting. Retract the
control box if necessary.

1.1.5. MISCELLANEOUS HANDLING
•Never submerge your wheelchair or leave it in the rain for a prolonged period;
•Do not store your wheelchair in a damp or very cold place (this could cause
serious damage);
•If the occupant remains seated in a wheelchair while travelling in a road vehicle
designed for transporting disabled persons, make sure that the occupant, driver
and the vehicle owner respect all legislative, regulatory, policy, guideline and
standard requirements, instructions and recommendations of all competent
authorities;
•When approaching an inclined surface in freewheel mode, the assistant should
always be toward the bottom of the incline relative to the wheelchair;
•Do not attempt to lift or move the wheelchair by moving parts such as arm
supports, leg support assemblies, seat, joystick, or cover. Use only non-
removable, solid frame components.

1.1.6. CLEANING AND DISINFECTING
•To disinfect the wheelchair, first remove all accessories that require special
treatment and those that cannot be treated:
•Special treatment: Any upholstery from which foam cannot be removed (back
support, lower leg support, etc.). Disinfection by hand. First clean with a cloth and a
cleaning agent, apply a disinfectant, wait the required time and then wipe dry.
•Not treatable: Electronic components (batteries, controllers, accumulator).
•Use a soft cloth to clean the control box and joystick as soon as they become soiled.
•Washing fabric: remove foam and machine wash the cover in warm water, delicate
cycle, with mild soap. Hang to dry. Do not use alcohol-based detergents or thinners.
•For other components, we recommend using pre-moistened alcohol and/or
quaternary ammonium wipes.
1.2. RECOMMENDED USE
Prima 4 and Prima R feature multiple adjustments that ensure proper positioning and
seating comfort, using materials that include ergonomic elements for maximum propulsion.
While the Prima 4 is suitable for occupants weighing up to 300 pounds, the Prima R offers
the same advantages for anyone weighing up to 350 pounds. All three models are tested
in accordance with BNQ 6645-001, which specifies requirements for wheelchairs and user
documentation for all users.

2. TECHNICAL INFORMATION
Dimensions
Prima 4: BNQ 6645-001 FMA-GM2-C-P2
Weight: 35 lbs
Prima R: BNQ 6645-001 FMA-GM3-C-P2
Weight: 37 lbs
Maximum user weight:
Prima 4: 300 lbs
Prima R: 350 lbs
Frame
Aluminum tube.
Seat
Width: 14 to 20 in. (Prima 4)
Width: 18 to 24 in. (Prima R)
Depth: 14 to 20 in.
Front floor-to-seat height: 14 to 20 in.
Rear floor-to-seat height: 13 to 19 ½ in.
Flexible nylon seat sling with adjustable tension
2 in. seat cushion
Back support
Angle adjustable from 85° to 110° in 5° increments
Back support post height from 14 to 23 in.
Back support post height with an 8° angle, from 14 to 23 in.
Flexible nylon upholstery with adjustable tension
Tension bar with head support anchor
Head support
Profiled upholstery
Height and angle adjustable head support
Arm support
Short or long "U" type, retractable and removable, adjustable
height from 8 to 12 in. or 10 to 14 in., telescopic rigid clothing
guards
Short or long "T" type, retractable and removable, height
adjustable from 8 to 12 in. or 10 to 14 in., rigid clothing
guards
Short or long "L" type, swiveling, height adjustable from 8 to
12 in. or from 10 to 14 in., removable rigid clothing guard
Short or long straight, profiled or gel profile comfort
upholstery
Tubular comfort upholstery ("L" type arm support)
Leg support assembly
Swiveling in/out and removable
60° or 70° post with adjustable length from 12 to 19 in.
90° post with adjustable length from 14 to 19 in.
Height-adjustable leg supports, from 14 to 19 in.
Adjustable lower leg support
Single or double lower leg support strap
Adjustable stump support
Folding foot supports
Standard or oversized
Adjustable angle and depth, standard or oversized format
Adjustable full-width or fixed
Heel support strap
Bumper with castors
Front wheels
5, 6, 7 or 8 in. semi-solid tires
Air tires: 6 or 8 in.
High and low forks
Rear spoked wheels
20, 22, or 24 in. diameter
Standard or high-pressure tires
Semi-solid tires
Threaded or quick-release axles
One-sided manual propulsion mechanism
Spoke guard
Hand rims
Smooth anodized aluminum
Plastic coated
Foam
Non-slip
With oblique projections
Ergonomically designed
Brakes
Push, pull or one-sided
Telescopic brake handle extensions
Anti-reverse
Others
Auto pelvic positioning belt
Pelvic safety belt
Anti-tips with castors
Anchors for specialized transit
Reflective devices
Cane holder
Adapter for an amputee position
Rear wheel camber

3. ADJUSTMENTS
Even if the bolts and screws are non-locking, after making any
adjustments, and before using the wheelchair, check that all
hardware is securely tightened. Check that the locking
mechanisms are secure before using the wheelchair.
Adjustments to your wheelchair should only be performed by health care
professionals. Improper adjustments can cause injury and/or damage to
the occupant, the assistant, the wheelchair, or the environment.
3.1. LEG SUPPORT ASSEMBLY
3.1.1. LENGTH ADJUSTMENT
1 - Unscrew the hexagon socket screw (A) with a 5/32 in. Allen key.
2 - Slide the tube (B) to adjust the desired leg support length.
3 - Check that the spacer (D) is fully inserted in the stem.
4 - Reposition the clamping ring (C) and firmly tighten the screw (A).

3.1.2. CHANGING THE ANGLE OF THE ADJUSTABLE ANGLE FOOT
SUPPORT, SINGLE AND FULL WIDTH
1 - Loosen the screws (A) with a 10 mm open-end wrench.
2 - Reposition the plates at the desired angle and firmly tighten the screws (A) (140 psi).
3.1.3.CHANGING THE POSITION (DEPTH) OF THE ADJUSTABLE ANGLE
PLATE
1 - Unscrew the 2 Phillips screws (A) and remove the end cap (B).
2 - Pull the plate to release it from the plate support (C).
3 - Reposition the plate to the desired depth and replace the end cap (B) and screws (A).

3.1.4. RETRACTING AND REMOVING THE LEG SUPPORT ASSEMBLY
RETRACTING THE LEG SUPPORTS
1 –Fold down the plates (B).
2 –Press the release (A) and rotate the stem (C) towards the outside or inside of the wheelchair.
REMOVING THE LEG SUPPORTS
1 –Swing the leg support towards the outside of the wheelchair and lift the stem (C) to remove the leg
support assembly.
2 –To replace the leg support, rotate it 90° in relation to the seat and insert the pivot (D) into the base (E).
Then, rotate the leg support toward the locking mechanism (F) to lock it in place.
Lifting the wheelchair by the leg support assemblies can be
dangerous.

NOTE1: It is best to fold down the foot support before retracting the leg support.
NOTE2: Always check that the front wheels are in forward position.
Figure 30-E: Retracting, wheels in forward position.
3.1.5. TWO-PIECE FULL-WIDTH PLATE
For full-width plate, fold down the plate with the anchor rod (A) (see Figures 2-A and 2-
B).
Figure 2-A : Full-width plate Figure 2-B: Full-width plate
FORWARD
POSITION
A

3.1.6. DEPTH ADJUSTMENT OF HEEL SUPPORT STRAP
Figure 3: Adjusting the heel support strap.
Pull on the Velcro strip
and replace at the
desired length.

3.1.7. ADJUSTING THE FLAT PADDED LOWER LEG SUPPORT
HEIGHT
1 –Loosen the hexagon socket screw (A) with a 3/16 in. Allen wrench.
2 –Place the bracket (B) at the desired height and firmly tighten the screw (A).
DEPTH
1 –Remove the screw (C) and the nut (D) with a 4 mm Allen key and an 8 mm open-end wrench.
2 –Move the lower leg support (E) into one of the holes of the bracket (B).
3 –Replace and tighten the screw (C) and the nut (D).

3.2. ARM SUPPORT
3.2.1. ADJUSTING THE REMOVABLE T-SHAPED ARM SUPPORT
TO REMOVE THE ARM SUPPORT
1 –Tighten the screw (E) to secure the arm support assembly.
2 –To remove the arm support, press the lever (A), then remove the assembly (make sure the screw (E) is
not tightened).
HEIGHT ADJUSTMENT
1 –Tighten the screws (D) with a 1/16" Allen wrench to lock the height adjustment.
2 –To adjust the height of the arm support, pull the plunger (B) and adjust the support (C) to the desired
height. Then, let go of the plunger (make sure the screws (D) are not tightened).

3.2.2. ADJUSTING THE REMOVABLE AND FOLDABLE U-SHAPED ARM
SUPPORT
TO FOLD DOWN AND REMOVE THE ARM SUPPORT
1 –To fold down the arm support, press the release (A) and rotate the assembly towards the back of the
wheelchair.
2 –You can lock the removable assembly rest with the screw and locknut (B). Tighten the screw with a 4
mm Allen wrench, then lock it with the lock nut, using an 8 mm open-end wrench.
3 –To remove the arm support, fold down the arm support as seen in step 1, then remove the base
assembly (F) (making sure the screw and lock nut (B) are not tightened).
HEIGHT ADJUSTMENT
1 –You can lock the height adjustment with the screw and the lock nut (E). Tighten the screw with a 4 mm
Allen wrench, then lock it with the lock nut, using an 8 mm open-end wrench.
2 –To adjust the height of the arm support, press the release (C) and adjust the support (D) to the desired
height, then let go of the release (making sure the screw and the lock nut (E) are not tightened).