Orthofab tangoAC 4 User manual

01198-0-00_rev.2021-11-29
USER'S MANUAL
Tango AC 4 wheels
Tango AC 6 wheels

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Give this manual to the wheelchair occupant, the
assistant or the user 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 any 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.

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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 (see
Section 8 of the manual).
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.

TABLE OF CONTENTS
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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 ....................................................................................................................................... 8
1.1.5. MISCELLANEOUS HANDLING .................................................................................................................. 9
1.1.6. CLEANING AND DISINFECTING.............................................................................................................. 10
2. RECOMMENDED USE..................................................................................................................................... 11
3. SPECIFICATIONS............................................................................................................................................. 12
4. ADJUSTMENTS............................................................................................................................................... 13
4.1. LEG SUPPORT ASSEMBLY .............................................................................................................................. 13
4.1.1. ADJUSTING THE LENGTH OF THE LEG SUPPORT ASSEMBLY................................................................. 13
4.1.2. CHANGING THE ANGLE OF THE ADJUSTABLE ANGLE FOOT SUPPORT, SINGLE AND FULL WIDTH....... 14
4.1.3. CHANGING THE POSITION (DEPTH) OF THE ADJUSTABLE ANGLE FOOT SUPPORT .............................. 14
4.1.4. RETRACTING AND REMOVING THE LEG SUPPORT ASSEMBLY.............................................................. 15
4.1.5. TWO-PIECE FULL-WIDTH PLATE............................................................................................................ 16
4.1.6. TWO-PIECE FULL-WIDTH PLATE............................................................................................................ 16
4.1.7. ADJUSTING THE FLAT PADDED LOWER LEG SUPPORT ......................................................................... 17
4.1.8. ADJUSTING THE SMALL FLAT PADDED LOWER LEG SUPPORT (14 IN. BASE)........................................ 18
4.2. HEIGHT-ADJUSTABLE U-SHAPED ARM SUPPORT.......................................................................................... 19
4.2.1. SECURING THE ARM SUPPORT ............................................................................................................. 19
4.2.2. RESTRICTING HEIGHT ADJUSTMENT..................................................................................................... 19
4.3. ANGLE-ADJUSTABLE BACK SUPPORT ............................................................................................................ 20
4.3.1. CHANGING BACK SUPPORT ANGLE....................................................................................................... 20
4.3.2. ADJUSTING BACK SUPPORT HEIGHT..................................................................................................... 21
4.3.3. INSTALLING A BOLTED TENSION BAR WITH HEAD SUPPORT ANCHOR. ............................................... 22
4.3.4. ADJUSTABLE ANGLE ELEVATED PUSH BAR ........................................................................................... 22
4.3.5. ADDING A TENSION BAR WITH AN ADJUSTABLE PUSH BAR................................................................. 25
4.4. SEAT .............................................................................................................................................................. 26
4.4.1. SEAT DEPTH ADJUSTMENT ................................................................................................................... 26
4.4.2. HEIGHT ADJUSTMENT........................................................................................................................... 27
4.5. FRONT WHEELS............................................................................................................................................. 31
4.5.1. CHANGING THE FRONT WHEEL DEPTH................................................................................................. 32
4.5.2. CHANGING THE FRONT WHEEL MODEL OR HEIGHT ............................................................................ 34
4.6. REAR WHEELS ............................................................................................................................................... 35
4.6.1. CHANGING THE WHEEL MODEL ........................................................................................................... 35
4.6.2. ADJUSTING THE CENTRE OF GRAVITY (rear axle) ................................................................................. 37
4.6.3. INSTALLING 12 IN. REAR WHEELS......................................................................................................... 41
4.7. LOCKING BRAKES .......................................................................................................................................... 43
4.7.1. BRAKE POSITION ADJUSTMENT............................................................................................................ 43
4.7.2. CHANGING OR INSTALLING A BRAKE LEVER EXTENSION ..................................................................... 49
4.7.3. CHANGING THE BRAKE LEVER ANGLE................................................................................................... 49

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4.8. ANTI-TIPS ...................................................................................................................................................... 51
4.8.1. HEIGHT ADJUSTMENT........................................................................................................................... 51
4.8.2. ACTIVATION OF THE RETRACTABLE ANTI-TIP MECHANISM ................................................................. 53
5. USE................................................................................................................................................................ 54
5.1. USE OF THE U-SHAPED ARM SUPPORTS ....................................................................................................... 54
5.1.1. RETRACTING THE ARM SUPPORTS........................................................................................................ 54
5.1.2. RETRACTING ......................................................................................................................................... 55
5.1.3. HEIGHT ADJUSTMENT........................................................................................................................... 55
5.2. USE OF LEG SUPPORT ASSEMBLIES............................................................................................................... 56
5.2.1. RETRACTING THE LEG SUPPORTS ......................................................................................................... 56
5.2.2. REMOVING THE LEG SUPPORT ASSEMBLY ........................................................................................... 58
5.2.3. RAISING AND LOWERING THE HEIGHT-ADJUSTABLE LEG SUPPORTS................................................... 59
5.3. Back support ................................................................................................................................................. 60
5.3.1. RECLINING BACK SUPPORT................................................................................................................... 60
5.3.2. HEIGHT AND DEPTH ADJUSTABLE HEAD SUPPORT .............................................................................. 61
5.4. TILTING THE SEAT ......................................................................................................................................... 62
5.4.1. BACKWARD TILT.................................................................................................................................... 62
5.5. REAR WHEELS ............................................................................................................................................... 64
5.5.1. REMOVING –INSTALLING..................................................................................................................... 64
5.5.2. AIR TIRE PRESSURE ............................................................................................................................... 64
5.6. LOCKING BRAKES .......................................................................................................................................... 65
5.6.1. ENGAGING - RELEASING THE BRAKES................................................................................................... 65
5.6.2. TELESCOPIC BRAKE LEVER EXTENSIONS ............................................................................................... 66
5.6.3. 12 IN. WHEEL BRAKE............................................................................................................................. 67
5.7. ANTI-TIPS ...................................................................................................................................................... 67
5.7.1. REMOVING............................................................................................................................................ 67
5.7.2. RETRACTING ......................................................................................................................................... 67
5.7.3. REINSTALLING....................................................................................................................................... 68
5.8. SEAT BELT ..................................................................................................................................................... 68
5.9. ANCHOR POINTS FOR SPECIALIZED TRANSIT ................................................................................................ 69
5.9.1. INSTRUCTIONS FOR SPECIALIZED TRANSIT........................................................................................... 69
5.9.2. TIPS FOR TRANSPORTING THE WHEELCHAIR WITH ITS USER............................................................... 71
6. MAINTENANCE .............................................................................................................................................. 76
7. TROUBLESHOOTING GUIDE ........................................................................................................................... 78
8. WARRANTY ................................................................................................................................................... 79
AUTHORIZED CENTRES .......................................................................................................................................... 82

1 SAFETY RULES
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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.
1.1.1. BEFORE YOU HIT THE ROAD
•Check that the anti-tips are installed.
•Check for adequate tire pressure (please see the user's manual for your electric
wheelchair).
•Check that nothing is obstructing the wheels (scarf, umbrella, etc.).
•Check that your seating position is stable.
•Return the reclining back support to the upright position.
•Return the tilting mechanism to the driving position (the seat should be as close
to horizontal as possible).
•Buckle your pelvic positioning belt, with minimal slack.
•Check that the retractable leg support assemblies are securely locked in the
front position and that your feet are stable.
•Lower the leg supports.
•Check that the retractable or removable arm supports are locked in place.
•Check that your personal belongings do not interfere with the proper operation
of the wheelchair.
•Check that the brakes are fully engaged.
•Do not attach or carry heavy objects to the back support of your wheelchair
(backpack, groceries, etc.).
•Do not use the wheelchair to pull loads, such as trailers.
•Do not release the brakes on an inclined surface.

1 SAFETY RULES
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1.1.2. GETTING AROUND IN A WHEELCHAIR
•Avoid slippery (snow, ice, etc.) or uneven surfaces (unmanaged trails and
tracks, construction sites, etc.).
•Do not drive in expressways or high-traffic lanes.
•Do not transport passengers or trailers.
•Do not drive in extreme weather conditions (i.e., storms);
•When traveling outside at night, make sure you are visible to others;
•Do not go downhill in reverse.
•Do not climb slopes diagonally. Always climb slopes in a straight line in the
direction of the incline.
•Do not make a U-turn on a slope.
•When faced with an obstacle, stop and go over it gradually.
•Use elevators to move from one floor to another.
•Do not climb a surface with a slope exceeding 10(17% slope).
•Do not travel without your feet on the foot supports;
•Always use and properly adjust your pelvic positioning belt.
•Do not ride an escalator with your wheelchair.
•Keep your hands away from the wheels when your electrically powered
wheelchair is in motion.
•Wear tight-fitting clothing, as loose clothing can get caught in the wheels.
•Avoid areas with uncertain ground conditions.
•If necessary, dry your wheelchair before using, loading or storing it.

1 SAFETY RULES
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1.1.3. CROSSING A SLOPE
•The 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.
•Do not make sudden stops and starts.
•Always fasten the positioning belt.
•Anti-tips must be fitted to the wheelchair.
•Anti-tips must not be damaged or worn.
•When descending a slope, do not let the wheelchair accelerate.
•Stop if you feel you are losing control.
•Restart slowly, without letting the wheelchair accelerate.
•Do not approach a slope diagonally.
•Climb and descend slopes in a straight line, directly along the slope's axis; This
reduces the risk of tipping or falling.
•Avoid slippery slopes or surfaces.
•Avoid quick turns from a slippery surface to a grippy surface to prevent tipping.
•The wheelchair will maintain stable and in control of its path if all of the above
conditions are met. Ascending or descending an incline with a tilt wheelchair is
possible, if the consulting health care professional is satisfied that the user
understands the limitations of the wheelchair and is able to navigate under these
conditions.
1.1.4. TRANSFERRING
•Always switch off the control box before transferring or transporting (stand-
alone tilt).
•Fold down the foot supports.
•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.
•Never sit on a reclining back support.
•Never stand on the foot supports.
•Never sit on the arm supports.

1 SAFETY RULES
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1.1.5. MISCELLANEOUS HANDLING
Do not charge the batteries in your bedroom. Charging the
batteries may release harmful gases.
•Never immerse your wheelchair in water.
•Never store your wheelchair unattended.
•Never leave your wheelchair in the rain.
•Do not store your wheelchair in a damp or very cold place (this could cause serious
damage).
•The occupant can remain seated in the wheelchair while travelling on a road
vehicle adapted for transporting disabled persons, if the driver and owner of the
road vehicle comply with all legislative requirements, regulations, policies,
directives, standards, instructions and recommendations of any competent
authority.
•Do not approach inclined surfaces when the wheelchair is in freewheel mode. If
you must do so, the assistant should always be at the bottom of the slope relative
to the chair.
•Do not lift the wheelchair by its detachable components (arm supports, foot
supports, etc.).
•Do not operate your charger in a sealed environment (backpack, closet, drawer,
etc.).
•Switch off the charger before removing its plug from the wheelchair.
•Do not modify the battery charger connection (110 V AC).
•Do not modify the connection (24 V DC) to the wheelchair.
•When charging the batteries, check that the battery charger plug is fully inserted
into the box.
•Never charge the batteries in your bedroom.
•Never connect electrical equipment that is not manufactured by to
your WHEELCHAIR.
•Do not alter the integrity of the wheelchair's electrical system.
•Make sure to protect the control box when transporting the wheelchair.
•Immediately replace any damaged power cables.
•Perform regular maintenance on your wheelchair as recommended in Section 6 of
this manual.

1 SAFETY RULES
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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.

2 RECOMMENDED USE
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2.RECOMMENDED USE
Tango tilt wheelchairs have several customization options to meet each occupant's
specific and individual needs, while making it easier for assistants and caregivers to
handle the chair. To ensure the utmost comfort for our customers, all models are
equipped with specialized posture components and provide all the mechanical functions
to adjust these components.
The seamless integration of the variable tilt and different propulsion modes means that
you won't have to compromise between resting posture and the correct posture for driving
the wheelchair.

3 SPECIFICATIONS
3.SPECIFICATIONS
Weight: 66 lbs. (Tango AC 4 wheels); 73 lbs. (Tango AC 6
wheels) for a basic setup, including solid back support, seat
plate, leg supports, wheels, tension bar with head support
anchor.
Maximum occupant weight AC, 4 and 6 wheels: 300 lbs
Frame
Total width: Working width + 8 ½ in.
spread
Rigid frame (non-folding)
Adjustable centre of gravity (5 positions, 1 in. increments)
Elevating cylinder from 0° to 45°
Seat
Width: 14 to 22 in.
Depth: 15 to 22 in.
Height: 13 to 19 in. (12 to 19 in. in 6-wheel version)
Rigid seat
Back support
Angle adjustable from 90° to 120° in 5° increments
Back support post height from 16 to 24 in.
Tension bar with head support anchor
Angle-adjustable push bar
Gas cylinder back support tilting mechanism
90° to 130°
Head support
Flat and padded
Adjustable head support mount
Arm support
Retractable and removable "U" type, height adjustable from
8 to 12 in. or from 10 to 14 in. (Tango AC)
2-inch wide, 10-inch or 14-inch straight comfort padding
Leg support assembly
Swivel and removable
60° or 70° parallel support with adjustable length from 12 in.
to 14 in., 14 in. to 19 in. or from 19 in. to 21 in.
90° parallel support with adjustable length from 14 in. to 19
in.
Adjustable length manual compensating leg supports
Heel support strap
Single or double calf support strap
Folding foot supports
Adjustable angle and depth, standard or oversized
format
Adjustable full-width
Bumper with castors
Front wheels
5,6, 7 or 8 in. semi-solid tires
8 in. anti-puncture tires
Rear wheels
20, 22 or 24 in. semi-solid tires
12 in. semi-solid molded plastic tire
Threaded or quick-release axles
Spoke guard
Hand rims
Smooth anodized aluminum
Plastic coated
Brakes
Push or traction
Telescopic brake lever extensions
Others
Auto pelvic positioning belt
Pelvic safety belt
Anterior and posterior tilt blocking
Reflective devices
Anti-tips with castors
Spoke guard
Anchors for specialized transit.

4 ADJUSTMENTS
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4. ADJUSTMENTS
After adjusting and before using the tilt wheelchair, check that
all hardware is tightly secured. Check that the locking
mechanisms are secure before using the wheelchair.
4.1. LEG SUPPORT ASSEMBLY
4.1.1. ADJUSTING THE LENGTH OF THE LEG SUPPORT ASSEMBLY
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).
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.

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4.1.2. 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).
4.1.3. CHANGING THE POSITION (DEPTH) OF THE ADJUSTABLE ANGLE
FOOT SUPPORT
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).

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4.1.4. 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.

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Figure 30-E: Retracting, wheels in forward position.
4.1.5. 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
4.1.6. TWO-PIECE FULL-WIDTH PLATE
Figure 3: Adjusting the heel support strap.
FORWARD
POSITION
A
Pull on the Velcro strip
and replace at the
desired length.

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4.1.7. 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).

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4.1.8. ADJUSTING THE SMALL FLAT PADDED LOWER LEG SUPPORT (14 IN.
BASE)
The lower leg support can be adjusted in height, depth and width (see Figure 4-B).
a) To adjust the height of the lower leg support:
1. Loosen the screw (A) with a 5 mm Allen key;
2. Slide the bracket (B) to the desired position;
3. Tighten the screw (A) firmly.
Figure 4-B: Adjusting lower leg support height.
b) To adjust the width of the lower leg support (see Figure 4-B):
1. Loosen the screws (C) with a 4 mm Allen wrench;
2. Slide the lower leg support (D) to the proper position;
3. Tighten screws (C).
c) To adjust the depth of the lower leg support (see Figure 4-B):
1. Remove the screw (E) and the stop screw (F) with a 5 mm Allen key;
2. Adjust to the desired position, while leaving a one-hole gap between the two
screws.
3. Tighten the screws, making sure to include the screw washer (F).

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4.2. HEIGHT-ADJUSTABLE U-SHAPED ARM SUPPORT
4.2.1. SECURING THE ARM SUPPORT
Figure 5-A: Securing the U-shaped arm support in place.
4.2.2. RESTRICTING HEIGHT ADJUSTMENT
Figure 5-B: Restricting height adjustment of the U-shaped arm support.
A
B
The plastic clip (A), an anti-tilt locking
mechanism at the back of the base, allows
you to permanently attach the arm support to
the chair. The "REMOVABLE" function of the
arm support is disabled, but it can be
retracted.
The screw (B) at the back of the side support
can be used to lock the arm support height
adjustment. When the desired adjustment is
selected, release the locknut (8 mm open-end
wrench), thread the screw into the hole (4 mm
hex key) and re-tighten the locknut (see
Figure 5-B).

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4.3. ANGLE-ADJUSTABLE BACK SUPPORT
4.3.1. CHANGING BACK SUPPORT ANGLE
POSITION
ANGLE
1
90o
2
95o
3
100o
4
105o
5
110o
6
115o
7
120o
Figure 6-A: Back support angle settings.
Figure 6-B: Back support angle settings.
Adjustments to your tilt 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.
1
3
5
7
2
4
6
B
A