Electric Wheelchair User Manual

Preface

Please read this user manual carefully before taking the product into use. This manual contains operations, assembly methods, and simple fault solutions. This manual applies to our models: F20. It also contains wheelchair maintenance and self-checking methods. Please keep it in a proper place and provide it for reference when other people are going to use this wheelchair. The annotations and illustrations in this manual might be slightly different from the real parts due to quality improvement or design changes. Please use the actual product as the standard.

Contact your dealer if there is any ambiguity or question. Improper use of any vehicle may lead to injury. Unsafe driving could harm yourselves and others. The electric wheelchair is intended to comfortably transport persons with walking difficulties or no walking abilities. This electric wheelchair is designed to transport 1 person only. Please fill out the warranty card correctly.

If the following symbols appear in this manual, please read them carefully:

• ⚠️ Warning: Improper use may result in personal injury or serious injury.
• ℹ️ Notice: Improper use will result in damage to the vehicle.
• ? Suggestion: Follow the instructions of this manual to keep the vehicle in good condition.

Hazardous Substances List

Note: ○ Means that the content of the toxic substance in all the mean materials of the parts is below the limit requirements stipulated in the SJ/T11363-2006 standard. X Means that the concentration of the toxic substance in at least one homogeneous material of the part exceeds the limit required by the SJ/T11363-2006 standard.

1 Application Range

This electric wheelchair is suitable for people who carry only 1 person, with a maximum user weight of 181kg, or who are disabled or have no full walking ability (except for those who cannot judge the driving environment). It is intended for short-distance travel and cannot be driven on motor vehicle lanes.

2 Product Information

2.1 Product Structure

This product consists of a front wheel, rear wheel, anti-tip wheel, frame, seat cushion, backrest, footrest, leg belt, handle, armrest, battery, motor, controller, handbrake, seat belt, and folding backrest, among other components.

2.2 Performance Parameters

3 Safety Instructions

ℹ️ Notice: When operating the wheelchair, please follow the instructions in this manual to ensure the safety of using the product.

3.1 Precaution before use

1. Please follow local traffic regulations and the points of caution in this manual to use your wheelchair properly.
2. Please do not stand on the pedals to get in and out of the wheelchair to avoid falling.
3. Please practice in parks or other safe open places until you can use the wheelchair skillfully.
4. Please make sure that the user is wearing the seat belt for safety.
5. Please check the condition of all parts.
6. Please check whether the battery capacity is sufficient.
7. Please maintain pneumatic tire pressure properly; abnormal tire pressure may cause unsteady driving or excessive current loss.
8. Protection from Electromagnetic Interference: The wheelchair should be kept away from strong magnetic fields and large inductive electrical equipment, such as radio stations, TV stations, underground radio stations, and cell phone transmitting radio stations. Pay attention to sources of electromagnetic interference nearby and stay away from them to avoid interference.

3.2 Precaution in use

1. Avoid driving on steep slopes, high steps, ditches, and avoid driving sideways or diagonally on steep slopes.
2. Accompanied by caregivers or Avoid Driving in Following Conditions:
   • Drive in bad weather, such as rainy day, heavy fog, strong wind, or snow.
   • Drive on bad road conditions, such as muddy trails, sand roads, or gravel.
   • Drive near unfenced ditches or ponds.
3. When going up or down hills, ensure there is at least 1 to 2 meters of flat road behind the ramp when going uphill. Please go at the lowest speed when going downhill.
4. Do not cross high steps or wide ditches. This vehicle can cross a 40mm high step and a 100mm wide ditch. When crossing a step or ditch, the direction of travel must be at a 90° angle to the step.
5. If you choose to go downhill with your back to the side, ensure a caregiver is present.
6. Do not use this product for handling or traction purposes.
7. Do not use mobile phones while driving, as it may affect your safety.
8. When stopping use, please park in a safe place and turn off the power.
9. The heavier the user, the shorter the driving distance will be.
10. No standing or jumping on the seat cushion and back cushion.
11. The circuit design of this product has taken user safety into consideration. Modifying the circuit without permission is strictly prohibited.
12. This product cannot be used as a motor vehicle.
13. Driving steps:
    1. Fasten your seat belt after the driver gets on and sits down.
    2. Turn on the switch button. After 1 second, the LED power meter will be on or flash slowly.
    3. Slowly push the joystick forward with your hand to start moving forward. Similarly, pull or push the joystick backward/left/right to move backward or turn left/right.
    4. Adjust the speed using the speed decrease or increase buttons according to road conditions, surroundings, and personal preferences.
    5. When parking, release the joystick; the motor's self-braking function will engage. Manual braking is required in emergencies or when the power is turned off.
14. When moving backward, pay attention to surrounding conditions and slowly pull the joystick backward.
15. ⚠️ Warning: The user should not ride or use the wheelchair in any motor vehicle, as they may be thrown from the wheelchair and injured in the event of an accident or emergency braking. When in a motor vehicle, the user shall transfer from the wheelchair to the normal seat of the motor vehicle and secure the wheelchair safely.
16. Protection from Electromagnetic Interference: The wheelchair should be kept away from strong magnetic fields and large inductive electrical equipment, such as radio stations, TV stations, underground radio stations, and cell phone transmitting radio stations. Pay attention to sources of electromagnetic interference nearby and stay away from them to avoid interference.

3.3 Notes for escorts

1. Please ensure the user's feet are safely on the pedals, the safety belt is fastened, and clothing does not come into contact with the wheels.
2. This wheelchair is equipped with a slope stopping function. When braking, please release the joystick or use manual brakes.
3. Please do not brake too hard when going downhill to avoid the user slipping out of the wheelchair.
4. ℹ️ Notice: When adjusting the length and angle of the pedals, pay attention to leaving a gap with the ground and do not collide.

4 Assembly, Debugging and Storage of Wheelchair

4.1 Unpacking

Unpack all components carefully.

4.2 Quick Installation

Place the wheelchair body flat on the ground. Use both hands to balance the backrest tube (refer to Fig. 1). Open the wheelchair fully (refer to Fig. 2). Then, press the backrest with both hands to complete the locking. Check if the lock is fully engaged (refer to Fig. 3).

4.3 Install Controller

Insert the rear end of the controller mounting plate into the controller fixing plate under the armrest tube of the two cars. Adjust the controller to a suitable position and tighten the knob (as shown in Fig. 3 and Fig. 4).

4.4 Install Anti-roll Wheel

Adjust the anti-roll wheel to a proper position. Adjusting it backward provides a better anti-roll function (as shown in Fig. 5 and Fig. 6).

4.5 Adjust Backrest's Height

Adjust the height of the backrest tube to a suitable position and tighten the backrest knob (as shown in Fig. 7 and Fig. 8).

4.7 Power Connection

Under the wheelchair seat cushion, insert the plug on the controller into the battery slot and tighten the nut on the plug (refer to Fig. 9).

4.8 Quick Folding

Loosen the lock (refer to Fig. 10). Then, hold the backrest with one hand and pull the seat with the other hand to fold it (refer to Fig. 11).

4.9 Open Armrest

Turn the armrest locking handle with one hand (refer to Fig. 12) and flip the armrest with the other hand to open it (refer to Fig. 13). After the armrest is put down, turn and open the armrest locking handle to lock the armrest.

4.10 Tie Safety Belt

When driving the vehicle, tie the safety belt securely (refer to Fig. 14).

5 Battery and Charger

5.1 Charger Requirements

The charger is used for battery charging. Do not use the electric wheelchair while it is charging.

Charger Technical Data

• Input voltage: AC(110V) ±10%
• Output voltage: 24V/DC
• Output current: 2A/3A

5.2 Usage of Charger

5.2.1 Charging

1. Charge when the battery indicator on the controller is orange.
2. If the battery is not used for a long time, charge it every 15 days to ensure it is fully charged.
3. Charge when the remaining battery power cannot reach the estimated travel distance.

5.2.2 Charging Steps

To charge the battery, connect the charger to the power supply and the controller socket. Follow these instructions:

1. Make sure the charger groove is not blocked.
2. Make sure the electric wheelchair is powered off.
3. Make sure the battery and controller are connected.
4. Connect the charger's output plug to the socket below the controller.
5. Connect the charger's main plug to the power supply. The red light will be alight. Fully charging needs 8 to 10 hours; do not overcharge for more than 24 hours.
6. To prolong battery life, charge the battery at least once per month when the wheelchair is not being used.

⚠️ Warning: Do not stop charging until the process is finished. Repeatedly using a battery that is not fully charged will shorten its life; the battery should be fully charged as much as possible. When the battery is fully charged, the power indicator will turn green. Do not stop charging before it is fully charged. After finishing charging, turn off the power supply, otherwise the battery will discharge slowly. Do not charge for more than 24 hours; over-charging is dangerous.

⚠️ Warning: Users should follow these rules to avoid charging dangers:

• The electric wheelchair does not include the charger; please use a national standard charger with an output voltage of 24V/DC 4A.
• Ensure good ventilation when charging. Do not expose the wheelchair to sunlight or humid environments.
• The charging environment temperature range is from -10℃ to +45℃. If it is outside this range, the battery may not function well and can be easily damaged.
• It is normal for the fan to make a sound during charging; this is for cooling the charger.
• Prevent liquid from entering the charger during charging. Do not place the charger on flammable items like fuel, footrests, or seat cushions.

5.3 The Usage and Maintenance of Battery

Incorrect battery replacement may cause danger of explosion. Only the same or recommended type of battery is suitable for replacement. Ensure the battery poles are correct. Key points for prolonging battery life: charge frequently to keep battery power full. It is better to fully charge the battery if the wheelchair is not being used. If stopped using for a long time, charge twice per month.

Please stay away from flames when charging the battery, as flames may cause battery fire or explosion. Charging produces hydrogen; do not smoke while charging.

⚠️ Warning: Do not unplug the power supply when the socket or your hands are wet, as this may cause electric shock. In case of unpredictable accidents that may hurt the user, do not use or sit on the electric wheelchair while charging.

6 Wheelchair Operation and Control

6.1 Controller Panel

The controller panel includes the following controls: Power On/Off button, Battery Power Gauge, Horn Button, Speed Decrease button, and Speed Increase button (refer to Fig. 16).

6.2 Controller Usage

Power on/off

Press the power button to turn on the power; the controller system enters the startup state. Press the button again to turn off the power. After each startup, wait 1.5 seconds before operating the joystick, as the controller has a 1.5-second self-check function.

⚠️ Warning: In an emergency, you can directly turn off power by pressing the power button.

ℹ️ Notice: When the power is on, the vehicle has an electromagnetic brake function. Release the joystick, and the wheelchair will be in a self-braking status. Turn off the power; after standing still for 10 seconds, the wheelchair's electromagnetic brake function will turn off, allowing an escort to push the vehicle manually.

Sleep Mode

If the joystick has no operation for more than 20 minutes, the power will turn off automatically, and the system enters sleep mode. The system can be woken up from sleep mode by pressing the power button.

Speed Adjustment

Wheelchair driving speed is adjustable according to user habits and circumstances. Adjust speed by pressing the decrease or increase buttons. Speed is divided into five sections: 20%, 40%, 60%, 80%, 100% of the max speed. The first gear is 20% of max speed, and the fifth gear is 100% of max speed.

Battery Power Gauge

After turning on the power, the battery power gauge is active and shows the battery's remaining capacity. As pictured, the battery power is full. When only the red or yellow LED light is lit, the battery should be charged. For long-distance driving, the battery should be fully charged. If only the red LED light is lit, the battery power is extremely inadequate, and users need to charge the battery as soon as possible.

Use of Joystick

The wheelchair's moving direction is controlled by the joystick. The extent of the joystick's movement also controls the moving speed.

⚠️ Warning: Please turn the power on or off when the joystick is in the center position. Otherwise, the controller may send out a wrong operation signal. Release the joystick to the center position to stop. If the issue persists, the part may be malfunctioning; do not use it and contact your dealer for maintenance.

6.3 Motor with Electromagnetic Brake

(Ignore this item if the wheelchair does not have an electromagnetic brake function.) Before using the wheelchair, open the electromagnetic brake upwards. After the electromagnetic brake is opened upwards, the wheelchair cannot be pushed manually and can only be driven by the motor. (If the battery is low, you need to turn off the electromagnetic brake and push manually to avoid damaging the battery) (refer to Fig. 17).

Note: Turning the clutch switches to manual gear will cause the controller to keep alarming and prevent starting when the controller is powered on.

7 Maintenance

Maintenance of the wheelchair includes cleaning, checking wheels and battery, and charging the battery. For further maintenance, please contact your dealer. We suggest checking the wheelchair every half year and performing an annual overhaul.

7.1 Clean and Battery Maintenance

Clean Wheelchair

Please clean the wheelchair regularly. Clean parts frequently touched by the user (such as seat cushion, armrest, controller) with a clean, slightly damp cloth. Do not use organic solvents for cleaning. If it is a patient user, the wheelchair should be cleaned once per week. If used by an infectious victim, it should be cleaned and disinfected.

Wheels

Check the tires' air pressure and wear condition regularly. When the tire tread pattern depth reduces to 1mm, please replace the tire.

Battery

Ensure the battery is frequently fully charged. To prolong battery life, it is strongly recommended not to charge the battery until it runs out of power completely.

7.2 Wheelchair Malfunction and Checking

When malfunctions occur while the wheelchair is operating, turn off the power before checking. Symptom: Completely lose power, and all LED lights on the controller panel are off.

Check Step:

1. Check if the controller's plug is loose.
2. Check if the connection of the controller's plug and battery box is loose. Reinsert the plug connector (hold the plug when pulling it out to avoid unnecessary damage to the wire). If the wheelchair still cannot restore power after these checks, or if users have any questions, please contact your dealer.

The controller has a diagnosing system to monitor the controller and motor. Any malfunction of these parts is indicated by the controller. For more details, please refer to the chapter on audio signal indication.

7.3 Maintenance Checking

The following is a checking list. The electric wheelchair should be checked periodically according to our suggestions. Some self-checks are done automatically when you get on or off the wheelchair. For your attention, we list these self-checking items in Area A.

A area (Before use):

1. Backrest
2. Armrest
3. Controller position
4. Footrest
5. Battery power
6. Clutch/adjusting lever for conversion between manual mode and electric mode

B area (Monthly checks):

1. Screws
2. Brakes
3. Clutch/adjusting lever for conversion between manual mode and electric mode
4. Front and rear wheels and their tread pattern depth
5. Connectors of controller and charger

C area (Safety):

Semiannual overall maintenance is needed.

8 System Diagnose

When the indicator LED lights are blinking, it means the wheelchair has abnormalities. These may occur in parts such as motors, brakes, battery, wire connections, etc. Through the product's internal information consultation, the nature of the abnormal condition can be detected by the diagnosis signal. The abnormal situation can be detected without other service tools.

Audio Signal Indication

9 Warranty Issues

Warranty Contents

We have elaborately designed this wheelchair for you. If there are improper materials or manufacturing, we provide free repair and lifetime maintenance according to the time and conditions in warranty cards.

Warranty does not cover in these conditions

• Subjective impression, no function problems.
• Usage and aging loss (coating and plating surface, nature fade of resins, etc.).

Maintenance are not applicable when following happens

• Don't regularly check our specified issues.
• Improper or wrong maintenance.
• Different operation with our manual or overload.
• Unauthorized modifications.
• External factors such as: soot, pharmaceuticals, bird droppings, acid rain, flying stone, metal powder, etc.
• Natural disasters such as: typhoons, floods, fires, earthquakes, etc.

The following fees are not covered

• Replacement of consumable materials such as tires, fuses, plastic parts, glass parts, lubricants, etc.
• Fees for inspection, adjustment, adding oil, cleaning, etc.
• Fees for regularly scheduled checks specified by our factory.
• Unauthorized modifications.
• Costs incurred at unauthorized service centers.

Customers pay attention following cautions

In order to make the warranty valid, customers have an obligation to follow these cautions:

• Correctly test and drive the power wheelchair as per manual instructions.
• Perform daily checks.
• Implement the check tips according to our suggestions.

Warranty acceptable

If warranty is needed, please bring the power wheelchair and show the after-sales service card to our service center for warranty service. If the user cannot provide the after-sales service card, the service will not be provided.

Protect environment

In order to protect the environment, every damaged or scraped part of the power wheelchair should be returned to our factory for disposal; do not throw them away randomly.

Warranty Application

The after-sales service card is valid from the stamped date. Under normal operation conditions of this product: the body frame is guaranteed for three years, the electronic control system is guaranteed for one year, and the battery is six months.

Consumables (for example: seat back pads/tires/carbon brushes...) / improper operation and modified parts without consent are not included in the warranty scope.

10 Others

Condition for Transport and Storage

During transport and storage, the electric wheelchair should be placed correctly as indicated. Transportation should avoid moisture, sunlight, and heat sources. In case of electric parts being damaged due to dampness, please avoid storing the wheelchair in rain, outdoors, or in moisture.

Storage condition:

• Environment temperature: -40℃ ~ +55℃
• Relative humidity: ≤80%
• Air Pressure: 86kPa ~ 106kPa

Main Security Features

• Classified according to the type of protection electric shock: Internal power.
• Classified according to the type of protection against electric shock: Type B application.
• Classified according to the degree of inlet liquid protection: IPX3.
• Classified according to the safety of use in a flammable anesthetic mixture with air or gas mixed with oxygen or nitrous oxide flammable anesthetic gases: Non AP/APG type.
• Classified according to operation mode: Continuous operation.
• Rating voltage: DC.24V.
• Has no protective effect on the application of defibrillator discharge section.
• No signal output or input part.
• Non-permanently installed equipment.

IMPORTANT

For damaged or defective products, questions, replacement parts, or any other service support, please contact our customer service department by the following methods:

Email: powet-service2024@outlook.com or support@kerdom.com

Phone: +18183504468 or + 16266019736 (Please text if no answer! Respond within 48 hours)

Contact us with your Amazon order number in your email or text to get a quick response. Please contact CUSTOMER SERVICE before returning.