WHILL MODEL F (02) PDF Document

The packaged WHILL Model F device contains the following items:

• WHILL Model F (device)
• Color plate
• Arm rest with controller
• Arm rest with hand rest
• Seat cushion
• Battery
• Charger
• User manual (this manual)
• Pocket reference
• App pairing ID/password label

The names and functions of the parts on the WHILL Model F device are as follows:

Controller Parts:

1. Power button: Turns on/off the device.

2. Display

3. Speed select button “+”: Increases the speed.

4. Speed select button “-“: Decreases the speed.

5. Joystick: Controls the forward, backward, left, and right movements. The degree of joystick inclination can also control acceleration and deceleration.

6. Horn button: Sounds the alarm.

Device Parts:

A. Back support

B. Arm rest

C. Controller

D. Speaker

E. Lock release button: Releases the lock when folding or unfolding the device.

F. Foot rest: Supports the user’s feet when the user is seated in the device.

G. Front wheels

H. Arm

I. Brake release lever: Used to lock/unlock the brakes for the rear wheels. This lever is located under the seat assembly. There are two levers in total.

J. Battery

K. Anti-tip roller: This prevents the device from tipping over backwards.

L. Foot pedal: Secures the device when folding or unfolding the device.

M. Rear wheels

N. Hand rest

O. Reflectors: Equipped with standard items depending on the areas/countries.

Charger:

Used to charge the battery.

When unfolding the WHILL Model F device, follow the procedure below with the battery already removed:

1. Fix the device in place while supporting the foot pedal.

2. Lightly pull the seat frame pipe (seat pipe) upwards.

3. With the seat pipe pulled upwards, press the lock release button.

4. Lower the seat pipe, and when the device begins to unfold, take your hand away from the lock release button. Open the device to the position where you hear a click sound.

5. Tilt the back support backward.

1. Fit the tabs (4 of each) at the corners of the color plate into the mounting holes on the arm.

2. Push the tabs at the sides of the color plate into the mounting holes (6 of each) on the arm to fix the arm in place.

3. Install the color plate on the opposite side in the same way.

The following explanation is for when the WHILL Model F is used at the specifications: Position of controller: Right side, Space between arm rests: Standard.

1. Pass the cable from the arm rest with controller through the threading holes on the right side of the device.

2. Install the arm rest with controller onto the right side of the device.

3. Install the arm rest with hand rest onto the left side of the device.

The following explanation is for when the WHILL Model F is used at the specifications: Position of controller: Right side, Space between arm rests: Wide.

1. Remove the cover from the arm rest with controller.

Press the location shown by the arrow in the figure to remove the two tabs, and separate the left and right covers.

Remove the cover.

2. Disconnect the cable attached to the inside of the cover.

3. Remove the controller from the arm rest with controller.

Turn the screw to remove together with the fixture.

Remove the controller by sliding it in the direction of the arrow.

4. Remove the cover from the arm rest with hand rest.

Press the location shown by the arrow in the figure to remove the two tabs, and separate the left and right covers.

Remove the cover.

5. Remove the hand rest of the arm rest with hand rest.

Turn the screw to remove together with the fixture.

Remove the hand rest by sliding it in the direction of the arrow.

6. Install the hand rest removed in step 5 to the arm rest on the opposite side.

Insert the grooved part of the hand rest to the projection on the arm rest, then slide the hand rest of the arm rest.

Install the screw and fixture removed in step 3, and tighten the screw to fix the hand rest.

7. Install the cover removed in step 1 onto the arm rest on the side installed with the hand rest.

8. Install the controller removed in step 3 to the arm rest on the opposite side.

Insert the grooved part of the controller to the projection on the arm rest, then slide the controller.

Install the screw and fixture removed in step 5, and tighten the screw to fix the controller.

9. Connect the cable disconnected in step 2 to the outer side cover removed in step 4.

10. Install the cover removed in step 4 to the arm rest with controller.

11. Pass the cable from the arm rest with controller assembled in step 10 through the threading holes on the right side of the device.

12. Install the arm rest with controller assembled in step 10 to the right side of the device.

13. Install the arm rest with hand rest assembled in step 7 to the left side of the device.

The following explanation is for when the WHILL Model F is used at the specifications: Position of controller: Left side, Space between arm rests: Standard.

1. Remove the cover from the arm rest with controller.

Press the location shown by the arrow in the figure to remove the two tabs, and separate the left and right covers.

Remove the cover.

2. Disconnect the cable attached to the inside of the cover.

3. Remove the controller from the arm rest with controller.

Turn the screw to remove together with the fixture.

Remove the controller by sliding it in the direction of the arrow.

4. Remove the cover from the arm rest with hand rest.

Press the location shown by the arrow in the figure to remove the two tabs, and separate the left and right covers.

Remove the cover.

5. Remove the hand rest of the arm rest with hand rest.

Turn the screw to remove together with the fixture.

Remove the hand rest by sliding it outward.

6. Install the hand rest removed in step 5 to the arm rest on the opposite side.

Insert the grooved part of the hand rest to the projection on the arm rest, then slide the hand rest of the arm rest.

Install the screw and fixture removed in step 3, and tighten the screw to fix the hand rest.

7. Install the cover removed in step 1 onto the arm rest on the side installed with the hand rest.

8. Install the controller removed in step 3 to the arm rest on the opposite side.

Insert the grooved part of the controller to the projection on the arm rest, then slide the controller.

Install the screw and fixture removed in step 5, and tighten the screw to fix the controller.

9. Connect the cable disconnected in step 2 to the inside of the cover removed in step 4.

10. Install the cover removed in step 4 onto the arm rest on the side installed with the controller.

11. Pass the cable from the arm rest with controller assembled in step 10 through the threading holes on the left side of the device.

12. Install the arm rest with controller assembled in step 10 to the left side of the device.

13. Install the arm rest with hand rest assembled in step 7 to the right side of the device.

The following explanation is for when the WHILL Model F is used at the specifications: Position of controller: Left side, Space between arm rests: Wide.

1. Pass the cable from the arm rest with controller through the threading holes on the left side of the device.

2. Install the arm rest with controller onto the left side of the device.

3. Install the arm rest with hand rest onto the right side of the device.

This procedure introduces an example where the controller is installed on the right arm.

1. Remove the battery.

2. Loosen the arm rest adjustment screw.

3. Change and adjust the locking position of the arm rest to the desired height. Set the position so that the scale on the arm rest is aligned with the upper end of the arm.

The height of the arm rest can be adjusted in 3 stages.

4. Tighten the arm rest adjustment screw loosened in step 2, and fix the arm rest in place.

• After adjustment is completed, try to slide the arm rest up and down to confirm that it is locked in place and does not slide.
• If rattling of the arm rest bothers you, further tighten the arm rest adjustment screw with a Phillips screwdriver.

5. Adjust the height of the arm rest on the opposite side in the same way.

6. Install the battery.

1. Connect the cable.

Connect by passing the cable through the cable holding bands under the seat.

2. Connect the connector of the cable.

Insert the connector with the arrows of the connector aligned, then rotate the base lock of the connector clockwise to lock it.

1. Place the seat cushion on the seat. Hook-and-loop fasteners are included to help secure the cushion to the chair. Please ensure the hook-and-loop fasters are firmly attached to the bottom of the cushion and the seat, and are properly aligned with each other when placing the seat cushion on the seat.

Place so that side with round corners is at the rear.

1. Ensure that the battery lock release button is not pressed.

2. Grab the battery handle and insert the battery into the battery compartment.

• Charge the battery before using WHILL Model F for the first time.
• The battery weighs 6.0 lb (2.7 kg). Handle the battery with care – dropping it will increase a risk of injury and damage to the battery. Otherwise, there is a risk of injury and damage to the battery.

3. Insert the battery straight and press it until it clicks. When it is difficult to insert the battery, push it from the front with force.

If the device does not start properly even though the charged battery is inserted to the device and the device is turned on after five seconds have elapsed, remove the battery, then attach the battery again after 10 seconds.

If the battery does not easily set in place, the cap may be attached on the battery connector or there may be a foreign object inside the compartment. Shine a light inside the compartment and check. If there is a foreign object, make sure to remove it with a small brush, etc. before trying again.

The space between arm rests can be widened by altering the installation method.

1. Remove the battery.

2. Remove the seat cushion from the seat.

3. Disconnect the cable connector under the seat.

• When disconnecting the connector, hold and rotate the base lock of the connector. Do not rotate other parts of the connector.
• When disconnecting the connector, do not pull forcefully. There is a risk of breaking the cables.

4. Loosen the arm rest adjustment screw.

To loosen a re-tightened screw, use a Phillips screwdriver.

5. Remove the arm rest.

6. Remove the arm rest on the opposite side in the same way.

7. Remove the controller and hand rest from the arm rest. For the removal procedure, refer to Steps 1 to 5 in “3.2.4. Installing the arm rests” “Installation pattern 2”.

8. Install the controller to the arm rest on the opposite side. Likewise, install the hand rest removed to the arm rest on the opposite side. For the installation procedure, refer to Steps 6 to 10 in “3.2.4. Installing the arm rests” “Installation pattern 2”.

9. Install each of the arm rests on the device. For the installation procedure, refer to Steps 11 to 13 in “3.2.4. Installing the arm rests” “Installation pattern 2”.

10. Tighten the arm rest adjustment screw, and fix the arm rest in place.

11. Connect the cable.

12. Install the battery.

13. Turn on the power and check that the device moves forward, backward, left, and right without problems.

This procedure introduces an example where the position of the controller installed on the arm on the right side of the device is changed to the left side of the device.

1. Remove the battery.

2. Remove the seat cushion from the seat.

3. Disconnect the cable connector under the seat.

• When disconnecting the connector, hold and rotate the base lock of the connector. Do not rotate other parts of the connector.
• When disconnecting the connector, do not pull forcefully. There is a risk of breaking the cables.

4. Remove the arm rests on both sides. For the arm rest removal procedure, refer to steps 3 to 6 in “3.3.2. Changing the space between arm rests”.

5. Switch the controller. For details on how to switch the controller, refer to “3.2.4. Installing the arm rests” “Installation pattern 2”.

6. Install the arm rests on both sides. For details on adjusting the height of the arm rests, refer to “3.2.5. Adjusting the height of the arm rest”.

7. Connect the cable. For details on how to connect the cable, refer to “3.2.6. Connecting the cable”.

8. Install the battery. For the installation procedure, refer to “3.2.8. Installing the battery”.

9. Turn on the power and check that the device moves forward, backward, left, and right without problems.

1. Check that the device power is off.

2. Press the battery lock release button.

3. Grasp the handle and pull it toward you to remove the battery.

The battery weighs 6.0 lb (2.7 kg). Handle the battery with care – dropping it will increase a risk of injury and damage to the battery. Otherwise, there is a risk of injury and damage to the battery.

1. Move the device close to the outlet.

2. Turn off the device power.

3. Connect the charger and AC connector cord.

4. Plug the charger into the wall outlet. The charger indicator illuminates red.

When the charger indicator is red, it means that the charger is connected to the wall outlet and not connected to the battery.

5. Remove the cap of the battery charging port and connect the DC connector to the battery charging port. Connect the DC connector so that the terminal inside is aligned with the hole of the charging port. The charger indicator begins flashing green, and charging starts.

• If the charger indicator flashes red, the charger is not properly connected. In this case, disconnect and reconnect again.
• If the charger indicator flashes red even though you attempt to establish a connection several times, a battery or charger malfunction may have occurred.
• If the charger indicator turns green right away even though the battery is not charged fully, a battery other than the battery provided with the device may have been used. Be sure that the charger indicator flashes green.

6. Charging is completed when the charger indicator turns solid green.

7. Disconnect the DC connector from the battery, then disconnect the plug from the wall outlet.

8. Close the cap of the battery charging port.

1. Check that the device power is off.

2. Remove the battery.

3. Connect the charger and AC connector cord.

4. Plug the charger into the wall outlet. The charger indicator illuminates red.

When the charger indicator is red, it means that the charger is connected to the wall outlet and not connected to the battery.

5. Remove the cap of the battery charging port and connect the DC connector to the battery charging port. Connect the DC connector so that the terminal inside is aligned with the hole of the charging port. The charger indicator begins flashing green, and charging starts.

You can check the charge level of the battery on the battery LED.

• Full charge: green
• Approx. 30% to less than full charge: orange
• Approx. 30% charge or less: red
• No charge: purple
• If the charger indicator flashes red, the charger is not properly connected. In this case, disconnect and reconnect again.
• If the charger indicator flashes red even though you attempt to establish a connection several times, a battery or charger malfunction may have occurred.
• If the charger indicator turns green right away even though the battery is not charged fully, a battery other than the battery provided with the device may have been used.

6. Charging is completed when the charger indicator and battery LED turn solid green.

The battery LED turns off shortly after charging completes.

7. Disconnect the DC connector from the battery, then disconnect the plug from the wall outlet.

8. Close the cap of the battery charging port.

9. Install the battery.

The charger indicator illuminates or flashes according to the battery states as shown below.

• Flashing green: charging
• Solid green: charging completed
• Solid red: standby
• Flashing red: charging error*

*Charging is not possible when the charger indicator is flashing red. Disconnect the plug from the wall outlet. Then after the charger indicator turns off, connect the plug again. If the issue persists, contact your dealer or customer support.

Before getting in the WHILL Model F device with the power off, inspect the following:

Assembly

• Check that all parts are correctly assembled and that there are no missing, broken, damaged, or loose parts.

Function

• Check that the joystick moves smoothly.
• Check that the brakes can be released and the device can be pushed manually. Also, check that when the brakes are locked, the device does not move when pushed.
• Check that the device has been properly unlocked (the lock indicator on the inside of the right arm shows red).

Wheels

• Check the treads and ensure they are not worn down by more than 1/64 inches (0.5 mm).
• Check that there is no visible deformation or cracking of the front or rear wheels.
• Check the rear wheels to see that they are at the appropriate air pressure [specified air pressure: 40 PSI]. (Tires are not crushed when pressed in by fingers.)

Seat assembly

• Check the seat to see that it is not ripped or sagging excessively.

Before getting in the WHILL Model F device with the power on, inspect the following:

• Check the battery charge level on the display and the charge level is sufficient.
• Check that the switches on the controller are functional.
• Check that the entire display is functional.
• Check that the horn button is functional.
• Check that the wheels are not making unusual noises when they spin.

1. Ensure that the power is turned off.

2. Raise the foot rest by lifting the end of the foot rest with your hand.

3. Sit in the seat.

• Do not let your hands touch the controller.
• As the back support can be folded forward, do not pull it toward you or apply force to it in the forward direction. There is a risk that the back support may tilt forward, causing an accident.
• Before using the device, be sure to check that the device has been properly unlocked.
• Take care not to catch or bump your feet against the foot rest frame.
• Do not get on or place your weight on the foot rest frame. The device may tilt forwards and tip over, and there is a risk of accidents.

4. Lower the foot rest by pushing the end of the foot rest down with your hand.

1. Tighten the lap belt.

Insert the tongue into the buckle until a click sound is heard.

After fastening the belt, adjust its length so that your body is held securely in place.

1. Press the button on the buckle of the lap belt to remove the lap belt.

1. Press the power button.

When the device turns on, first the WHILL logo appears on the display, and next the current speed setting is displayed. The display will then show the battery charge level indicator.

To check the speed setting again, either turn the power off and back on, or press the speed select buttons to adjust the speed.

If the device does not start properly even though the charged battery is inserted to the device and the device is turned on after five seconds have elapsed, remove the battery, then attach the battery again after 10 seconds.

1. The battery charge level is shown on the display as a number from 0 to 100, changing in increments of 1. When fully charged, the charge level is shown as “100”.

The battery charge level may decrease rapidly or unexpectedly for various reasons such as the environment or battery conditions due to the characteristics of the lithium ion battery. Be sure to fully charge the battery before using it regardless of the distance you plan to travel.

1. The maximum speed (when the joystick is tilted all the way) can be adjusted in 4 stages from 1 (slow) to 4 (fast) by operating the speed select buttons.

• + button: increasing the speed.
• – button: decreasing the speed.

The device speed can be adjusted according to degree of movement of the joystick via a proportional drive system.

1. To alert individuals near your device, press the horn button.

Move the joystick forward to move the device forward, and backward to move the device backward.

To move in a diagonal direction, first turn the device so that it faces the direction you want to go. Then move the joystick straight forward or backward to move forward or backward in the diagonal direction.

To turn in place, move and hold the joystick to the left or right.

Releasing the joystick automatically applies the brakes and stops the device.

The device speed can be controlled by the degree of movement of the joystick.

Increasing the tilt angle of the joystick increases the device speed while reducing the tilt angle decreases the speed. The speed can be controlled in a continuous scale.

• When beginning to drive, move the joystick only the amount needed to start moving slowly.
• The maximum speed when the joystick is moved all the way varies depending on the speed that was set with the speed select buttons.

The WHILL Model F cannot be driven under the following conditions:

• Steps higher than approximately 1.4 inches (35 mm)
• Slopes with a gradient of 10° or more
• Soft surfaces such as sand, mud, snowy or frozen paths.

1. Turn off the device power.

2. Push down both brake release levers below the seat assembly (two on the right and left side).

The brakes are released. To re-engage the brakes, raise both brake release levers.

When hanging a backpack on the back support, hang the shoulder straps onto the hooks on the back support.

• The maximum load of the back support is 11 lb (5 kg).
• Hang the rucksack by its shoulder straps and tighten them. Be careful not to let the rucksack touch the battery, and make sure that the shoulder straps are not dragging on the ground.

1. Tilt the back support forward.

2. Fix the device in place while supporting the foot pedal.

3. Keep the device in this state with the lock release button pressed in.

4. Pull the seat pipe upwards.

When the device begins to close, take your hand away from the lock release button to unlock the device.

5. Close the device to the position where you hear a click sound.

• The device sometimes cannot be folded if the front wheels are touching the rear wheels.
• When moving the device, fully check the surroundings and road conditions, and take care to prevent collision and falling out of the device.
• Do not apply force to the device from the sides or drag the device.

1. Fix the device in place while supporting the foot pedal.

2. Pull the seat pipe upwards.

3. With the seat pipe pulled upwards, press the lock release button.

To prevent malfunctioning of the lock release button, the lock release button has been designed so that it can be pushed in only when the seat pipe is pulled upwards.

4. Lower the seat pipe, and when the device begins to unfold, take your hand away from the lock release button. Open the device to the position where you hear a click sound.

Check that the lock indicator on the inside of the right arm shows black. When the device is not correctly folded out, the lock indicator shows red.

5. Tilt the back support backward.

When storing the WHILL Model F for a month or longer, remove the battery from the device and fully charge it. At least once a month, charge the battery and check that the device operates correctly.

When using this device again after a prolonged period of disuse, charge the battery before using it, and be sure to check that the device operates correctly.

This section explains how to transport the WHILL Model F device with the device in a folded state.

1. Roll the device by holding onto the arm rests.

Check that the arm rest adjustment screws are firmly tightened.

2. When changing the direction of the device, raise up the stand wheel at the bottom of the foot rest, and tilt the device so that only the anti-tip rollers are in contact with the ground.

3. With only the anti-tip rollers in contact with the ground, roll the anti-tip rollers to change the direction of the device.

• When moving the device, fully check the surroundings and road conditions, and take care to prevent collision and falling out of the device.
• Do not apply force to the device from the sides or drag the device.

This section explains precautions when loading the WHILL Model F device into the trunk of an automobile or onto a carrier.

1. Remove the battery.

2. Fold the device.

3. Load the device.

Grip the handle of the seat pipe and battery frame, and lift up and load the device.

Take care to prevent the device from being laid down with the controller facing down.

To remove the arm rest with controller from the WHILL Model F device for transportation, follow the procedure below.

1. Remove the battery.

2. Remove the seat cushion from the seat.

3. Disconnect the cable connector under the seat.

• When disconnecting the connector, hold and rotate the base lock of the connector. Do not rotate other parts of the connector.
• When disconnecting the connector, do not pull forcefully. There is a risk of breaking the cables.

4. Remove the arm rest adjustment screw.

To loosen a re-tightened screw, use a Phillips screwdriver.

5. Remove the arm rest with controller.

6. Tighten the arm rest adjustment screw.

Be careful not to lose the arm rest adjustment screw.

The length and main material of the arm rest with controller are as follows. Refer to this information when checking permission to bring the arm rest on board an airplane.

• Length: 39.6 cm
• Weight: 950 g
• Main material: Aluminum

By installing the WHILL app on the device with iOS (13.0 or later) of Apple Inc. (iPhone, iPad, etc.) or smartphone with Android OS (7.0 or later) of Google LLC, it is possible to configure the settings of WHILL Model F from the app via Bluetooth Low Energy (BLE). The device utilizes Bluetooth Generic Attribute Profile (GATT) for communication. The app can be used to lock, unlock, and control the device. Use the app within connectable distance (approximately 10 m, varying depending on environment) close to the device, otherwise degradation of wireless function (e.g., remote control, firmware update) may occur. Use the remote control function of the app as an attendant control, move the device out of the way after use, or to retrieve the device for use. Time synchronization of WHILL Model F with the local time can also be accomplished via the app over BLE connection, but this function can only be executed by WHILL. Depending on your region, time, or smartphone type, the app may not be offered or some functions may not be used. The paper slip where the app pairing ID and password printed is placed in the box containing arm rests. Attach it to the last page of this user manual so that you do not lose it. Ensure not to attach the slip to the device.

• When unlocking or locking the device through a smartphone app, make sure that the smartphone has enough battery power. It will not be possible to lock or unlock the device if the smartphone battery runs out.
• The smartphone app cannot be used when the battery is not fully inserted into the battery compartment or when there is insufficient battery power. Install only a fully charged battery onto the device.

Perform the following to keep the WHILL Model F device clean.

• If there is a significant amount of dirt on the exterior or wheels, wipe it away with a wet towel. Pay attention when washing the wheels off with water.
• If the dirt is tough to remove, use a neutral detergent. Avoid the use of petroleum-based solvents.
• Do not use a high-pressure washer.
• Use 70% EthylAlcohol disinfectant damped cloth and gently wipe subject parts.
• Replace the front and rear wheels when the treads are worn down by less than 1/64 inches (0.5 mm).
• Fill the rear wheels with air to keep them at the appropriate air pressure. When filling the rear wheels with air, insert a flathead screwdriver into the groove of the rear wheel cover to remove the rear wheel cover. Specified air pressure: 40 psi

If the joystick comes off the controller, follow the procedure below to reinstall it.

1. Fit the joystick in place 90° relative to the direction of forward travel.

2. Rotate the joystick clockwise by 90°. Push in the joystick after rotating it to the specified position.

Check the 8th to 10th digits of the serial number listed on the primary identification label.

Check the 4th to 6th digits of the 16-digit serial number listed in the white frame of the primary identification label of the battery.

Check the 5th and 6th digits of the 11-digit serial number listed in the white frame of the primary identification label of the charger.

When the controller is operated with the WHILL Model F device in a folded state, the device stops, specific error code were displayed, and unintentionally power off.

Resolution: Unlock the device and turn the power on again.

When the joystick was not in neutral position when the power was turned on, the WHILL Model F device stops, specific error code were displayed, and unintentionally power off.

Resolution: Power back on without touching the joystick.

When the brakes were released, the WHILL Model F device stops, specific error code were displayed, and unintentionally power off.

Resolution: Lock the brakes and turn the power on again.

When the charger was connected while the power was on, or the device was turned on while connecting the charger, the WHILL Model F device stops, specific error code were displayed, and unintentionally power off.

Resolution: Disconnect the charger from the battery.

When the battery charge level is low (low battery display), the WHILL Model F display shows the low battery icon.

Resolution: Charge the battery.

When the maximum speed decreases, the WHILL Model F display shows the specific error code, and the battery temperature dropped significantly.

Resolution: Store the battery at room temperature or at least at an ambient temperature of above 0°C (32°F) until the battery temperature rises above 0°C (32°F).

When the maximum speed increases, the WHILL Model F display shows the specific error code, and the battery temperature rose above 0°C (32°F).

Resolution: Store the battery at room temperature or at least at an ambient temperature of above 0°C (32°F) until the battery temperature rises above 0°C (32°F).

When the smart key (sold separately) battery level is low, the WHILL Model F display shows the specific error code and a warning sound are observed.

Resolution: Replace the smart key battery.

When the battery charge level is low, the WHILL Model F device does not turn on and the display indication does not light.

Resolution: Charge the battery.

When the battery is not fully inserted into the battery compartment on the rear drive base, the WHILL Model F device does not turn on and the display indication does not light.

Resolution: Insert the battery all the way in.

Other specifications:

• Device name: WHILL Model F
• Maximum weight limitation including occupant and any carried items: 115 kg (253.5 lb)
• Wheelchair class: A
• Drive type: 2-wheel drive
• Speed changes: 4 stages
• Brake type: Electromagnetic brakes
• Type of front wheels: Solid tire/Outside diameter 194 mm (7.64 inches)
• Type of rear wheels: Standard: Air tire/Outside diameter 207 mm (8.15 inches)
• Maximum allowable inclination: 10°
• Cruising distance: 20 km (12.4 miles)
• Charging time: 5 hours
• Operating temperature: -15 to 40°C (5 to 104°F)
• Operating humidity: 8 to 80%
• Pivot width: 1080 mm (42.5 inches)
• Force needed to operate joystick: 1 N
• Estimated Lifetime: 5 years
• Noise produced by the device and level thereof: Below 65 dBA except audible warning device