Revell 23940, 23891 RC Helicopter User Manual

: June 9, 2024
: Revell

Table of Contents

23940, 23891 RC Helicopter
**REPLACING SPARE PARTS
**IMPORTANT FEATURES
Safety instructions:
Maintenance and care:
INSTRUCTIONS FOR SAFE FLYING
TROUBLESHOOTING
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

23940, 23891 RC Helicopter
User Manual Revell 23940, 23891 RC Helicopter

23940, 23891 RC Helicopter

© 2017 Revell GmbH,
Henschelstr. 20-30, D-32257 Bünde. A subsidiary of Hobbico, Inc. REVELL IS THE REGISTERED TRADEMARK OF REVELL GMBH, GERMANY. Made in China.
Table of contents

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Helicopter| Replacement rotor blades
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USB charger| Remote control
Operating manual

Revell 23940, 23891 RC Helicopter - Figutre 1

Revell 23940, 23891 RC Helicopter - Figutre 2 |
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**REPLACING SPARE PARTS

**

Glowee 2.0

**IMPORTANT FEATURES

**

Helicopter:

With led lightning
Outstanding flight characteristics with gyro stabilisation
Stable attractive aluminium fuselage

Safety instructions:

This model is suitable for pilots who are at least 8 years of age. Adult supervision is required when flying it.
This manual must be read through carefully together with your child prior to the first use and kept safe for later reference.
Attention: Not suitable for children under 36 months. Small parts. Choking hazard!
Flying the model requires skill and the user must be instructed under the direct supervision of an adult. The initial start-up and instruction by an experience person are recommended.
The user should only operate this model in accordance with the instructions for use in this operating manual.
This toy / this model is only intended for use at your residence (house and garden) and is only for use suitable outdoors when there is no wind or rain.
Keep your hands, face, hair and loose clothing away from the rotor. Do not touch the rotors. Caution: Risk of eye injuries. Do not use near anyone’s face in order to avoid eye injuries.
Switch off the transmitter and model when they are not in use.
Remove the batteries from the transmitter when it is not in use.
Always maintain visual contact with the model in order to avoid losing control of it. Inattentive and careless use can lead to considerable damage.
Caution: Do not lift off and fly if there arepeople, animals, power lines or other obstacles in the flight area of the model.
This model is not suitable for people with physical or mental disabilities.
In general, it must be ensured that the model cannot injure anyone in consideration of potential malfunctions and defects.
The model may only be repaired with original Revell Control spare parts and may not be modified. Otherwise, the model can be damaged or pose a danger.
Note for supervising adults: If necessary – check to ensure that the toy has been assembled as specified in the manual. The assembly, e.g. of spare rotors, should only be carried out under adult supervision.
In order to prevent risks, always operate the model from a position which provides an easy line of retreat, if necessary.

Safety instructions for flying models:

You are operating your aircraft in the general air space. As the pilot, you are responsible for your model. You are liable for your model and any damage resulting from its operation. If you want to use your aircraft commercially, you need an ascent permit.
Before commissioning for the first time, familiarize yourself with the functions of the model.
Check that the product is working correctly before every flight.
Observe the instructions of the manufacturer at all times.
Always note the wind and weather conditions and any obstructions.
You must always swerve away from manned aircraft immediately and land right away.
Do not fly over private property owned by other people, crowds of people, military objects, hospitals, power plants, correctional facilities and similar.
Do not fly close to airfields (<1.5 km).
Never fly without direct visual contact with the model, it must be in the direct field of vision at all times. It is illegal to control a model using only a video image.
Failure to observe these safety instructions may make you liable to prosecution!
Information and additional help is available from the Association for Unmanned Air Vehicles under „http://www.uavdach.org“
Flying models outdoors has required mandatory liability insurance since 2005. Contact your private liability insurer and make sure that your new and earlier models are included in your insurance coverage. Request written confirmation and keep this in a safe place. Alternatively, the DMFV offers a trial membership free of charge online at www.dmfv.aero. This includes insurance.

Transmitter safety instructions:

We recommend new alkali manganese batteries for the transmitter. Singleuse batteries for this transmitter and other electrical devices operated in the home can be replaced with environmentally-friendly recharge able batteries.
As soon as the transmitter no longer functions reliably, new batteries should be inserted and/or the batteries should be charged.

Safety instructions for batteries:

Rechargeable batteries must be removed from the transmitter prior to recharging.
Non-rechargeable batteries may not be charged.
Rechargeable batteries may only be charged under the supervision of an adult.
The combination of different types of batteries as well as new and used batteries must be avoided.
Only recommended batteries or those of an equivalent type may be used.
Batteries must be inserted according to the correct polarity (+ and -).
Depleted batteries must be removed from the transmitter.
The connection terminals may not be short-circuited.
Remove the batteries from the transmitter if they are not to be used for an extended period of time.

Charging unit safety instructions:

Non-rechargeable batteries may not be charged.
This charging unit is not suitable for people (including children) with physical or mental limitations, or those with insufficient knowledge and experience of charging units, unless under supervision or following proper directions from a parent or legal guardian.
Children must be supervised – the charging unit is not a toy!
The charging unit for the LiPo battery is specially designed for the charging of the model battery. The charging unit may only be used to charge the model battery, not other batteries.

The model is equipped with a rechargeable lithium polymer battery. Please observe the following safety instructions:

Never throw LiPo batteries into a fire or store them in a hot location.
Only use the supplied charger to charge the battery. The use of a different charger may lead to the permanent damage of the battery and neighbouring parts, as well as physical injury!
Never use a charger for NiCd/NiMH batteries!
Always ensure that the charging process takes place on a fireproof surface in a fire-resistant environment.
Do not leave the battery unsupervised during the charging process.
Never disassemble or alter the battery contacts. Do not damage or puncture the battery cells. There is a risk of explosion!
The LiPo battery must be kept out of reach of children.
When disposing of batteries, they must be discharged or their capacity must be fully depleted. Cover exposed terminals with adhesive tape in order to prevent short- circuiting!

The toy is only to be connected to Class II equipment bearing the symbol: ****

Maintenance and care:

Please only use a clean, damp cloth to wipe off the model.
Protect the model and batteries from direct sunlight and/or direct heat.
Never allow the transmitter and charging unit to come into contact with water, because the electronics will be damaged as a result.

Technical changes and differences in color reserved!
Required battries for the helicopter:
Rated output: DC 3.7 V / 0.93 Wh
Batteries: 1 x 3.7 V rechargeable
LiPo battery (integrated)
Capacity: 250 mAh
Charger:
Power supply: DC 5 V of USB port of a PC or USB hub
Rated output: 4.2 V / up to 500 mA
Battery requirement for the transmitter:
Power supply: DC 9 V
Batteries: 6 x 1.5 V “AA”

HELICOPTER
1A Counter-rotating rotor blades
1B Stabiliser
1C Tail rotor
1D LED
1E Charge socket
1F ON/OFF switch
REMOTE CONTROL
2A ON/OFF switch
2B Thrust controller
2C Antenna
2D Left/right trim adjustment
2E Controller for forwards and backwards flight as well as rotation| 2F ON/OFF button for LEDs
2G Charging cable compartment
2H Power LED
2I No function
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INSERTING BATTERIES (REMOTE CONTROL)
3A Unscrew and remove the cover
3B Insert 6 x 1.5 V AA batteries and pay attention to the polarity, as shown in the battery compartment.
3C Close the battery cover and secure with the screw.
CHARGING THE HELICOPTER
Attention: The battery and motor must cool down for 10 to 15 minutes before charging and after every flight. Otherwise they can be damaged. The charging process must be constantly monitored. Always ensure that the charging process takes place on a fireproof surface in a fire-resistant environment.
1. Switch off the helicopter and the remote control.
2. Plug the USB charger into a USB hub or a USB port on a computer (4A).
3. Now insert the plug of the charger on the bottom side of the model (4B).
The charging process begins automatically.
4. The status LED on the USB charger lights up continuously when the charging process starts. The charging process lasts approx. 50 minutes and must be continuously monitored. The red LED on the charger goes out as soon as the charging process is finished. Disconnect the battery from the charger and disconnect the charger from the USB port once charging is complete.
The helicopter can fly for approx. 6-8 minutes after a charge time of approx. 50 minutes.
Warning notice: The LiPo battery does not normally heat up while charging. If it should become warm or even hot and/or changes to the surface begin to appear, immediately discontinue the charging process!
You can also charge your helicopter with the remote control:
• Switch off the remote control and the helicopter.
• The charging cable plug is located on the side of the remote control (4D). First push down the charging cable compartment and then carefully insert the cable into the helicopter‘s charging socket (4E). The plug must be gently inserted into the charging socket – DO NOT USE FORCE. If the plug is not correctly inserted into the charging socket, the helicopter may become damaged and, under certain circumstances, become an injury risk. Switch on the remote; the power LED blinks red. Slowly move the thrust controller to maximum and then back to its starting position to activate the remote control (2B); the power LED will begin to blink quickly. This process lasts for approx.
3 seconds. Now the LED continuously illuminates green.
• The charging process is complete as soon as the LED is illuminated red.
• After the charging process, switch the power switch to „OFF“ and disconnect the charge cable from the helicopter.
START PREPARATION
Set the remote control‘s ON/OFF switch to „ON“ (5A). The power LED begins to blink.
Now set the helicopter’s ON/OFF switch to the “ON” (5B). Place the helicopter on the ground so that the tail points toward you (5C). Activate the remote control by slowly moving the thrust controller to maximum and then back to its starting position; the power LED will begin to blink quickly. This process lasts for approx. 3 seconds. The helicopter is ready to start when the headlamp is permanently illuminated red.
TRIM ADJUSTMENT OF THE CONTROL
The correct trimming is a basic requirement for achieving fault-free flying from the helicopter. Its adjustment is simple, but it requires some patience and a feel for it.
Please observe the following instructions precisely: Carefully move the thrust control up and raise the helicopter approximately 0.5 to 1 metre in altitude.
6A If the helicopter quickly or slowly rotates clockwise by itself…
If the helicopter begins to automatically rotate clockwise, rotate the left/right trim adjustment anti-clockwise until the helicopter no longer rotates on its own.
6B If the helicopter quickly or slowly rotates anti-clockwise by itself…
If the helicopter begins to automatically rotate anti-clockwise, rotate the left/right trim adjustment clockwise until the helicopter no longer rotates on its own.
FLIGHT CONTROL
Note: Only minimal corrections of the controls are necessary for a smoothing flying behaviour of the helicopter! 7A Take off or increase altitude by carefully moving the control for thrust forward.| 7B Land or decrease altitude by moving the control for thrust backward. Only minimal corrections to the controller are necessary to ensure smoothing flying of the helicopter!
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7C Fly forward by moving the controller for forward/backward flight and right/ left rotation carefully forward.| 7D Fly backward by moving the controller for forward/backward flight and right/left rotation carefully backward.
7E Turn the helicopter around anticlockwise by moving the controller for forward/backward flight and right/left rotation to the left.| 7F Turn the helicopter around clockwise by moving the controller for forward/ backward flight and right/left rotation to the right.

INSTRUCTIONS FOR SAFE FLYING

GENERAL FLYING TIPS:
• Always place the helicopter on a level surface. An inclined surface can, under certain circumstances, negatively effect the helicopter during take-off.
• Always operate the controls slowly and with a gentle touch.
• Always maintain visual contact with the helicopter and do not look at the remote control!
• Move the thrust controller somewhat down again once the helicopter has lifted off from the ground. Maintain flying altitude by adjusting the thrust controller.
• If the helicopter descends, move the thrust controller slightly upward again.
• If the helicopter climbs, move the thrust controller down slightly.
• To fly along a curve, tapping the directional controller very slightly in the respective direction often suffices. There is a general tendency during preliminary attempts at flight to operate the helicopter’s controls too aggressively.
Always operate the controls slowly and carefully. Never fast and fitfully.
• Beginners should first master trimming before attempting to master the thrust controller. It is not necessary for the helicopter to fly straight at first. It is far more important to maintain a constant height of approximately one metre above the ground by repeatedly tapping the thrust controller. Only then should the pilot practise steering the helicopter left and right.
SUITABLE FLYING ENVIRONMENT:
The location in which the helicopter is flown should fulfil the following criteria:
• It should be an indoor location without any wind. Insofar as possible, there should be no air conditioning systems, heaters, etc. that can cause air currents.
• The room should be at least 10 metres long, six metres wide and three metres high.
• No disruptive objects, such as fans, lamps, etc. should be present in the room.
• When initialising take-off, make absolutely sure that all persons and animals – including the pilot – are at least 1-2 metres removed from the aircraft before flight begins.
Flying model aircraft and helicopters outdoors has required mandatory liability insurance since 2005. Contact your private liability insurer and make sure that your new and earlier models are included in your insurance coverage. Request written confirmation and keep this in a safe place. Alternatively, the DMFV offers a trial membership free of charge online at www.dmfv.aero, which includes insurance.

CHANGING THE ROTOR BLADES
If the helicopter’s rotor blades have been damaged, they must be replaced. Proceed as follows:
Prior to installation, make sure that you do not mix up the rotor blades.
The rotor blades are marked with “A” and “B” (8A). Type “B” rotor blades are mounted on top and Type “A” rotor blades are mounted on the bottom.
8B Use a Phillips screwdriver to carefully remove the screws on the rotor blade.
8C Now carefully remove the rotor blade from the mount.
8D Carefully fit the new rotor blade in the mount and tighten the screw.
Attention: Do not over-tighten the screw. The rotor blade must have a certain amount of play.

TROUBLESHOOTING

Problem: The rotor blades do not move.
Cause:

The ON/OFF switch is set to the “OFF” position.
The battery is too weak or depleted.

Remedy:

Set the ON/OFF switch to the “ON” position.
Charge the battery.

Problem: The helicopter stops and descends during flight for no apparent reason.
Cause: • The battery is too weak.
Remedy: • Charge the battery.
Problem: It isn’t possible to control the helicopter using the remote control.
Cause:

The ON/OFF switch is set to the “OFF” position.
The batteries were not inserted correctly.
The batteries do not have enough power.

Remedy:

Set the ON/OFF switch to the “ON” position.
Check whether the batteries are inserted correctly.
Insert new batteries

Problem: The helicopter only rotates around its axis clockwise or anti- clockwise.
Cause: • Excessive trimming to the left or right.
Remedy: • Reset the the left/right trim adjustment in the opposite direction (see point 6: Adjusting the Trim Controller).
SERVICE NOTES
Go to www.revell-control.de for ordering information and tips on replacing spare parts, plus other useful information on all Revell Control models.
Notes
Electrical and electronic waste ordinance:
After the end of the service life: Please remove all batteriesand dispose of them separately.
Drop off all electrically operated devices at the communal collection centres for electrical and electronic waste. Dispose of the remaining parts with household waste.
Thank you for your cooperation!
Attention: Risk from heat development and rotating parts during operation! Adult supervision is required!
Revell GmbH hereby declares that this product conforms with the basic requirements and the additional applicable provisions of Directive 1999/5/EC. The Declaration of Conformity can be found at www.revell- control.de.