Introduction
Thank you for choosing the KLARSTEIN AeroVital Cube Chef Air Fryer. This appliance is designed to provide a healthy and efficient way to cook a variety of meals using hot air circulation. With its 1700W power, 14-liter capacity, DuoHeating technology, and intuitive touch screen with 16 pre-set programs, you can enjoy delicious, oil-free dishes. Please read this manual thoroughly before first use to ensure safe and optimal operation.
Safety Instructions
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, and injury.
- Read all instructions before use.
- Do not touch hot surfaces. Use handles or knobs.
- To protect against electric shock, do not immerse the cord, plugs, or the main unit in water or other liquid.
- Close supervision is necessary when any appliance is used by or near children.
- Unplug from outlet when not in use and before cleaning. Allow to cool before putting on or taking off parts.
- Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been damaged in any manner.
- The use of accessory attachments not recommended by the appliance manufacturer may cause injuries.
- Do not use outdoors.
- Do not let the cord hang over the edge of a table or counter, or touch hot surfaces.
- Do not place on or near a hot gas or electric burner, or in a heated oven.
- Extreme caution must be used when moving an appliance containing hot oil or other hot liquids.
- Always attach plug to appliance first, then plug cord into the wall outlet. To disconnect, turn any control to "off", then remove plug from wall outlet.
- Do not use the appliance for other than intended use.
- Ensure adequate ventilation around the appliance during operation.
Product Components
The KLARSTEIN AeroVital Cube Chef includes the main unit and several accessories to enhance your cooking experience.
- Main Air Fryer Unit with Control Panel and Viewing Window
- Rotisserie Spit
- Rotisserie Forks (2 pairs)
- Rotisserie Handle
- Mesh Basket
- Drip Tray
- Grill Rack

Image: Included accessories for the AeroVital Cube Chef, showing the mesh basket, drip tray, grill rack, rotisserie spit, and handle.
Setup
- Unpacking: Carefully remove all packaging materials and accessories from the box. Keep packaging for future storage or disposal.
- Initial Cleaning: Before first use, wipe the main unit's exterior with a damp cloth. Wash all removable accessories (mesh basket, drip tray, grill rack, rotisserie parts) with warm, soapy water. Rinse thoroughly and dry completely.
- Placement: Place the air fryer on a stable, level, heat-resistant surface. Ensure there is at least 10-15 cm (4-6 inches) of clear space on all sides and above the appliance for proper air circulation. Do not place it near flammable materials or heat sources.
- First Use (Burn-off): It is normal for a slight odor to be present during the first few uses as manufacturing residues burn off. To minimize this, operate the empty air fryer at 200°C (390°F) for approximately 15-20 minutes. Ensure the area is well-ventilated.
Operating Instructions
Control Panel Overview
The appliance features an intuitive digital touch screen and a rotary knob for easy operation.

Image: A hand interacting with the rotary knob on the control panel, showing the digital display for temperature and time.
- Digital Display: Shows temperature and time settings.
- Pre-set Program Icons: Touch icons for various cooking functions (e.g., Wings, Steak, French Fries).
- Rotary Knob: Used to adjust temperature, time, and select programs. Press to confirm selection or turn on/off.
- Power Button: Press and hold the rotary knob to turn the appliance on or off.
- Temperature Control: Adjusts cooking temperature from 50°C to 220°C.
- Time Control: Adjusts cooking time up to 60 minutes for most programs, and up to 10 hours for dehydration.
- Light Button: Turns the interior light on/off to check cooking progress.
- Rotisserie Button: Activates the rotisserie rotation function.
Basic Operation
- Power On: Plug the appliance into a grounded electrical outlet. Press and hold the rotary knob to turn on the unit.
- Select Program: You can either select one of the 16 pre-set programs by touching the corresponding icon, or manually set the temperature and time.
- Manual Settings: If not using a pre-set program, touch the temperature or time icon, then use the rotary knob to adjust the desired value. Press the knob to confirm.
- Start Cooking: Once settings are confirmed, press the rotary knob again to start the cooking process.
- Pause/Stop: Press the rotary knob during operation to pause. Press again to resume. To stop, press and hold the rotary knob.
DuoHeating Technology
The AeroVital Cube Chef utilizes DuoHeating technology, which combines top and bottom heating elements with a powerful air circulation fan. This ensures rapid and even heat distribution, cooking food thoroughly and gently from all sides for consistent results.

Image: Internal view illustrating the DuoHeating technology with red arrows showing hot air circulating from both top and bottom heating elements.
Using the Rotisserie Function
- Assemble: Skewer your food (e.g., a whole chicken) onto the rotisserie spit. Secure it with the rotisserie forks, ensuring the food is centered and balanced.
- Insert: Open the appliance door. Carefully insert the assembled rotisserie spit into the designated slots inside the cooking chamber. Ensure it is securely seated.
- Activate: Close the door. Select a suitable cooking program or set manual temperature and time. Press the 'Rotisserie' button on the control panel to start the rotation.
- Remove: Once cooking is complete, use the rotisserie handle to safely remove the hot rotisserie spit and food from the appliance. Place it on a heat-resistant surface.

Image: A golden-brown rotisserie chicken being carefully removed from the air fryer using the specialized rotisserie handle.
Cleaning and Maintenance
Regular cleaning ensures optimal performance and extends the lifespan of your appliance.
- Unplug and Cool: Always unplug the air fryer from the power outlet and allow it to cool completely before cleaning.
- Exterior: Wipe the exterior of the appliance with a soft, damp cloth. Do not use abrasive cleaners or scouring pads, as they may damage the finish.
- Interior: Clean the interior cooking chamber with a soft, damp cloth and a mild detergent. For stubborn food residues, a non-abrasive sponge can be used. Ensure no water enters the electrical components.
- Accessories: All removable accessories (mesh basket, drip tray, grill rack, rotisserie parts) should be washed with warm, soapy water. Rinse thoroughly and dry completely before storing or re-using. Note: The main unit is not dishwasher safe.
- Storage: Store the cleaned and dried appliance in a cool, dry place.
Troubleshooting
If you encounter issues with your air fryer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Appliance does not turn on. | Not plugged in; Power outlet malfunction; Appliance not powered on correctly. | Ensure the power cord is securely plugged into a working outlet. Press and hold the rotary knob to power on. |
| Food is not cooked evenly. | Overcrowding the basket; Incorrect temperature/time; Food not rotated/shaken. | Do not overcrowd the basket; cook in smaller batches. Adjust temperature and time as needed. Shake or turn food halfway through cooking. |
| White smoke coming from the appliance. | Grease residue from previous use; Fatty food being cooked. | Clean the drip tray and interior thoroughly after each use. For fatty foods, ensure the drip tray is in place and consider using less oil. |
| Food is not crispy. | Too much moisture in food; Not enough oil (for certain foods); Overcrowding. | Pat food dry before cooking. Lightly coat with oil if desired. Cook in smaller batches to allow proper air circulation. |
Technical Specifications
| Feature | Specification |
|---|---|
| Model Number | OV12-CubeChefSilv |
| Power | 1700 Watts |
| Voltage | 220-240 V ~ 50/60 Hz |
| Capacity | 14 Liters |
| Temperature Range | 50°C - 220°C |
| Timer | Up to 60 minutes (up to 10 hours for dehydrate) |
| Dimensions (L x W x H) | 33 x 37.5 x 38.5 cm |
| Weight | 3 kg |
| Material | Stainless Steel, Metal Interior |
| Control Method | Touch Screen, Rotary Knob |
| Special Features | DuoHeating Technology, 16 Pre-set Programs, Programmable, Temperature Control |

Image: The KLARSTEIN AeroVital Cube Chef air fryer with its physical dimensions clearly marked.
Warranty and Support
For warranty information, product support, or any questions regarding your KLARSTEIN AeroVital Cube Chef Air Fryer, please refer to the warranty card included with your purchase or contact KLARSTEIN customer service. Keep your proof of purchase for any warranty claims.