A SERIES ELECTRIC WHEELCHAIR

A-Series Premium Powered Wheelchair

Product Overview & Technical Catalogue

The A-Series Powered Wheelchair is a medical-grade, high-performance mobility solution engineered to provide exceptional autonomy, safety, and comfort. Featuring dual-motor rear-wheel drive, intelligent fluid joystick controls, and a lightweight optimized folding geometry, it shifts seamlessly from an agile indoor navigator to a highly portable travel vehicle.

I. Technical Specifications

Specification Parameter	Value / Dimension
Outer Dimensions (L × W × H)	1060mm × 630mm × 910mm
Folding Dimensions (L × W × H)	760mm × 350mm × 730mm
Net Weight (Including Batteries)	57 kg
Maximum Weight Capacity	100 kg
Castor Diameter (Front Wheels)	200mm (Approx. 8 inches)
Driving Wheel Diameter (Rear Wheels)	330mm (Approx. 12.5 inches)
Seat Dimensions (Width × Depth)	410mm (W) × 400mm (L)
Operational Speed Range	1 – 6 km/h
Maximum Climbing Angle (Creeping Capacity)	12°
Obstacle Clearance Capability	50mm
Minimum Turning / Stopping Distance	1 meter
Running Range (Per Full Charge)	Up to 20 km
System Operational Noise Level	≤ 65 dBA
Battery Configuration	2 × 12V = 24V, 28Ah Lead-Acid / Gel
Motor Configuration	200W × 2 (Dual High-Torque Rear Drive)
System Charging Parameters	5A Output / AC 220V Input

Standard Package Includes: > 1 × Main Powered Wheelchair Structure, 1 × Dedicated Smart Charger (5A), 2 × Integrated Battery Packs, 1 × Premium Comfort Seat Cushion, and 1 × Ergonomic Back Cushion.

II. Setup, Installation & Calibration Guide

1. Frame Unfolding & Chassis Assembly

• To Unfold: Push downward firmly on both outer edges of the seat upholstery until the main frame locks into its secure, rigid tracking configuration.

• To Fold / Collapse: Pull upward directly on the middle center-line of the canvas seat upholstery. The battery box and controller can remain intact or be uncoupled for tighter spaces.

• Leg Rests: Install the adjustable leg rests into the front receiver brackets, lock them at the desired orientation, and insert the integrated safety anti-tip pins.

2. Battery Box & Wiring Matrix

When servicing cells or replacing the power bank, adhere strictly to terminal serialization to prevent system over-voltage:

• Series Jumper: Link the positive terminal (anode) of Battery A cleanly to the negative terminal (cathode) of Battery B using the thick secondary bridge wire.

• Main Positive Line: Secure the main Red Cable directly to the remaining open positive (anode) terminal of Battery A.

• Main Negative Line: Secure the main Blue/Black Cable cleanly to the remaining open negative (cathode) terminal of Battery B.

• Chassis Connection: Slide the battery boxes into the support bracket rails, hook the housings to the primary support pole, and align the heavy-duty power coupling plug directly into the receiver socket underneath the chassis.

3. Controller Configuration

• Mount the controller unit securely onto the structural armrest bracket and tighten the lower retention adjustment knob.

• Route the wiring loom safely beneath the armrest to avoid pinching.

• Plug the drive system connectors into their corresponding labeled ports under the chair: the cable marked LEFT connects to the left motor drive loop, and the cable marked RIGHT connects to the right motor drive loop.

III. Intelligent Controller Operations

• Power On/Off: Press the physical power button. The indicator display light array will illuminate immediately, showcasing current battery capacity (Green = Full, Amber = Medium, Red = Critically Low / Charge Immediately).

• Speed Modulation: Use the Speed Up and Speed Down keys to shift acceleration thresholds between settings 1 through 5 depending on room layouts or terrain.

• Directional Joystick: Pushing the joystick forward, backward, or sideways dictates steering orientation. Releasing the stick to its absolute center neutral position engages the automatic electronic regenerative braking loop instantly.

• Free-Wheel (Manual Push) Mode: If battery reserves drain out, an assistant can manually push the wheelchair by releasing the two manual clutch engagement levers directly mounted on the rear motor gearboxes.

  • Warning: Never disengage the clutch levers on an incline or slope.

🔒 System Lock & Unlock Alarms

To protect the vehicle against unauthorized usage, a computer lock profile can be toggled:

• To Lock: While the controller power is ON, press and hold the Power Button continuously for 4 seconds. The display screen will turn off immediately, all status LEDs will flash once, and the onboard horn will emit two quick sound profiles. The chair is now locked.

• To Unlock: Press the Power Button once. The battery gauge LEDs will begin executing a slow, continuous right-to-left chase sequence. Within 10 seconds of this sequence beginning, press the physical Horn Button twice. The display will revert to normal operation, confirming system authentication.

IV. Self-Help Diagnostics & Troubleshooting Matrix

The integrated primary controller monitors system electronics in real time. If a fault condition is detected, the red service indicator LED will blink continuously. Count the number of consecutive flashes between pauses to diagnose the state:

Flash Code	System Diagnosis State	Recommended Corrective Action
1	User / Configuration Fault	Possible system stall timeout or accidental joystick hold at startup. Power the unit off, release the joystick, and cycle power back on.
2	Battery Bank Fault	Core voltage drops below the standard operational minimum. Connect the 5A charger immediately. If fault persists, check cell terminals for oxidation.
3	Left Motor Disconnect	Left drive loop broken. Inspect the Left motor quick-release line plug, connection pins, and structural wiring harness paths.
4	Right Motor Disconnect	Right drive loop broken. Inspect the Right motor line plug interface and ensure pins are pushed securely into place.
5	Left Parking Brake Error	Left manual clutch lever is uncoupled or the electric brake loop registers open circuit resistance. Lock clutch engagement lever.
6	Right Parking Brake Error	Right manual clutch lever is uncoupled or internal parking brake loop is broken. Lock the right gearbox engagement clutch.
7	Joystick Offset Discrepancy	The controller lever was deflected away from absolute neutral center during the boot sequence. Power off, ensure joystick is clear, and restart.
8	Main PCB Controller Fault	Internal logic processor board registers a structural processing error. Consult an authorized service technician.
9	Bus Communications Loss	Signal communication broken between the upper joystick command pad and the lower motor driver board. Inspect the serial data cable lines.
10	System Over-Voltage Threshold	Input voltage parameter exceeds maximum allowance. Check connection serialization balancing for terminal crossing errors.

⚠️ Critical Maintenance Safeguard: Always maintain the inflation pressure of pneumatic rear wheels and front castors strictly within 3 kgf/cm² – 4 kgf/cm². Low tyre pressure significantly drops maximum running range metrics, compromises tracking accuracy, and decreases automatic braking stability. Safely clean the structural frame and upholstery frequently using mild, non-abrasive detergents.