Ninja Double Stack 2-Drawer Air Fryer

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Thank you for purchasing the Ninja Double Stack 2-Drawer Air Fryer.

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Visit ninjakitchen.co.uk/register-guarantee or scan the QR code using a mobile device.

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Model Number: SL300UK

Serial Number: [To be filled by user]

Date of Purchase: [To be filled by user] (Keep receipt)

Store of Purchase: [To be filled by user]

TIP: You can find the model and serial numbers on the QR code label on the back of the unit by the power cord.

Technical Specifications

Voltage: 220-240V~, 50-60Hz

Watts: 2470W

Important Safeguards

For Household Use Only. Read all instructions before using your Ninja Double Stack 2-Drawer Air Fryer.

WARNINGS:

• This appliance can be used by persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.
• Keep the appliance and its cord out of reach of children. DO NOT allow the appliance to be used by children. Close supervision is necessary when used near children.
• Children should not play with the appliance.
• DO NOT place or store anything on top of the product when in use.
• To prevent fire, DO NOT place appliance on or near a gas or electric hob, or in a heated oven.
• NEVER use an electrical socket located below a counter.
• NEVER connect this appliance to an external timer switch or separate remote-control system.
• DO NOT use an extension cord. A short power-supply cord is used to reduce the risk of children less than 8 years grabbing the cord or becoming entangled, and to reduce the risk of people tripping over a longer cord.
• To protect against electrical shock, DO NOT immerse the cord, plugs, or main unit housing in water or other liquid. Cook only in the drawer provided.
• Regularly inspect the appliance and power cord. DO NOT use the appliance if there is damage to the power cord or plug. If the appliance malfunctions or has been damaged in any way, immediately stop use and call Customer Service.
• ALWAYS ensure the appliance is properly assembled before use.
• When using this appliance, provide at least 15cm (approx. 6 inches) of space above and on all sides for adequate air circulation.
• DO NOT cover the air intake vent or air outlet while the unit is operating. Doing so will prevent even cooking and may damage the unit or cause it to overheat.
• Before placing the removable drawer into the main unit, ensure the drawer and unit are clean and dry by wiping with a soft cloth.
• This appliance is for household use only. DO NOT use this appliance for anything other than its intended use. DO NOT use in moving vehicles or boats. DO NOT use outdoors. Misuse may cause injury.
• Intended for worktop use only. Ensure the surface is level, clean, and dry. DO NOT move the appliance when in use.
• DO NOT place the appliance near the edge of a worktop during operation.
• DO NOT use accessory attachments not recommended or sold by SharkNinja. Do not place accessories in a microwave, toaster oven, convection oven, or conventional oven or on a ceramic cooktop, electric coil, gas burner range or outdoor grill. The use of accessory attachments not recommended by SharkNinja may cause fire, electric shock, or injuries.
• ALWAYS ensure drawers are properly closed before operating.
• DO NOT use the appliance without the removable drawers installed.
• DO NOT use this appliance for deep-frying.
• Prevent food contact with heating elements. DO NOT overfill when cooking. Overfilling may cause personal injury or property damage or affect the safe use of the appliance.
• Socket voltages can vary, affecting the performance of your product. To prevent possible illness, use a thermometer to check that your food is cooked to the recommended temperatures.
• Should the unit emit black smoke, unplug immediately. Wait for smoking to stop before removing any cooking accessories.
• DO NOT touch hot surfaces. Appliance surfaces are hot during and after operation. To prevent burns or personal injury, ALWAYS use protective hot pads or insulated oven mitts and use available handles.
• Extreme caution must be used when the appliance contains hot food. Improper use may result in personal injury.
• Spilled food can cause serious burns. Keep appliance and cord away from children. DO NOT let the cord hang over edges of tables or counters or touch hot surfaces.
• The drawers, racks, and crisper plates become extremely hot during the cooking process. Avoid physical contact while removing the drawers, racks, and plates from the appliance. ALWAYS place drawers, racks, and plates on a heat-resistant surface after removing. DO NOT touch accessories during or immediately after cooking.
• DO NOT place any of the following materials in the unit: paper, cardboard, plastic, roasting bags, and the like. They may cause fire.
• Extreme caution should be exercised when using containers constructed of any materials other than metal or glass.
• Cleaning and user maintenance should not be carried out by children.
• To disconnect, turn off any control to OFF, then unplug from the socket when not in use and before cleaning. Allow to cool before cleaning, disassembly, putting in or taking off parts, and storage.
• DO NOT clean with metal scouring pads. Pieces can break off the pad and touch electrical parts, creating the risk of electric shock.
• Please refer to the Cleaning & Maintenance section for regular maintenance of the appliance.

[!] Indicates to read and review instructions to understand operation and use of product.

[!] Indicates the presence of a hazard that can cause personal injury, death, or substantial property damage if the warning included with this symbol is ignored.

[Gloved Hand Icon] Take care to avoid contact with hot surfaces. Always use hand protection to avoid burns.

[House Icon] For indoor and household use only.

SAVE THESE INSTRUCTIONS

Parts

The main components of the Ninja Double Stack Air Fryer are:

• Main Unit: The primary body of the appliance.
• Air Outlet: Vents for air circulation.
• Control Panel: Interface for operating the appliance.
• Non-stick Crisper Plates: Used in each drawer for crisping food. (One for each drawer)
• Non-stick Drawers: The two main compartments for cooking food. (One for each zone)
• Stacked Meal Racks: Used to create a second layer of cooking space within a drawer. (One for each drawer)

To order additional parts and accessories, visit ninjakitchen.co.uk or contact Customer Service at 0800 862 0453.

Getting to Know Your Air Fryer

Function Buttons:

• AIR FRY: For crispy, crunchy food with little to no oil.
• MAX CRISP: Best for cooking smaller quantities of frozen food (e.g., French fries, chicken nuggets) at high temperatures.
• BAKE: For creating baked goods and desserts.
• ROAST: Use the unit as an oven for tender meats and more.
• REHEAT: Revives leftovers, leaving them crispy.
• DEHYDRATE: For dehydrating meats, fruits, and vegetables.

Operating Buttons:

• Power Button [Power Icon]: Turns the unit on and off, and stops all cooking functions.
• Zone 1 Control [1]: Controls the output for the top zone.
• Zone 2 Control [2]: Controls the output for the bottom zone.
• TEMP Button: Adjusts the cook temperature using the up/down arrows.
• TIME Button: Adjusts the cook time using the up/down arrows.
• DOUBLE STACK PRO: Enables cooking in both independent drawers simultaneously.
• SYNC Button: Automatically syncs cook times so both zones finish at the same time, even with different settings.
• MATCH Button: Matches Zone 2 settings to Zone 1 for cooking larger quantities or different foods with identical settings.
• START/STOP Button: Starts or stops the cooking process after settings are selected.

When setting time, the digital display shows HH:MM.

Special Modes:

• HOLD MODE: Appears when using SYNC mode; one zone holds its temperature while the other zone catches up.
• STANDBY MODE: The unit enters standby mode after 10 minutes of inactivity. Press the power button to wake it.

Before First Use

1. Remove and discard all packaging material, promotional labels, and tape from the unit.
2. Remove all accessories from the package and read this manual carefully, paying particular attention to operational instructions, warnings, and important safeguards to avoid any injury or property damage.
3. Wash the drawers, stacked meal racks, and crisper plates in hot, soapy water, then rinse and dry thoroughly. These are the ONLY dishwasher-safe parts, but hand-washing is recommended to extend their life. NEVER clean the main unit in the dishwasher.
4. When using this appliance, provide at least 15cm (approx. 6 inches) of space on all sides for adequate air circulation.

Cooking in Your Air Fryer

Cooking with Double Stack Pro

The Double Stack Pro allows you to cook 4 foods at once in 2 independent drawers. You can cook in both zones or just in a single zone.

• For detailed instructions on SYNC or MATCH, see page 8.
• When using SYNC or MATCH, press DOUBLE STACK PRO before pressing SYNC or MATCH.
• When cooking in a single zone, press DOUBLE STACK PRO before pressing START/STOP.
• For detailed instructions on each function, see pages 9-12.

Ending the Cook Time in One Zone (While Using Both Zones)

1. Select the zone you wish to stop.
2. Press START/STOP to end cooking for that zone.
3. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.

Pausing Cooking

Cooking will automatically pause when a drawer is removed. Re-insert the drawer to resume cooking.

When Using in SYNC or MATCH Mode

If you open a drawer, the other drawer will automatically pause so that cooking finishes at the same time. Reinsert the drawer to continue cooking in both zones.

Cooking with DualZone Technology

DualZone Technology uses two cooking zones to increase versatility. The SYNC feature ensures that, regardless of different cook settings, both zones will finish ready to serve at the same time.

• For detailed instructions on using each function, see pages 9-12.

SYNC Function

To finish cooking at the same time when foods have different cook times, temperatures, or even functions:

1. Place ingredients in the drawers and insert them into the unit.
2. Select Zone 1. Select the desired cooking function. Press the TEMP button and use the arrows to set the temperature. Press the TIME button and use the arrows to set the time.
3. Select Zone 2. Select the desired cooking function. Press the TEMP button and use the arrows to set the temperature. Press the TIME button and use the arrows to set the time. (Note: You can select a different function for Zone 2.)
4. Press SYNC, then press START/STOP to begin cooking in the zone with the longest time. The other zone will display "Hold". The unit will beep and activate the second zone when both zones have the same time remaining.
5. If food in one zone is done before the cook time is up, you can STOP A ZONE by selecting it and pressing START/STOP. See page 7 for further instructions.
6. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
7. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

MATCH Function

To cook a larger amount of the same food, or cook different foods using the same function, temperature, and time:

1. Place ingredients in the drawers and insert them into the unit.
2. Select Zone 1. Select the desired cooking function. Press the TEMP button and use the arrows to set the temperature. Press the TIME button and use the arrows to set the time.
3. Press the MATCH button to copy the Zone 1 settings to Zone 2. Then press START/STOP to begin cooking in both zones.
4. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
5. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

Starting Both Zones at the Same Time, but Ending at Different Times:

1. Select Zone 1, then select the desired function using the arrows. Press the TEMP button and use the arrows to set the temperature.
2. Press the TIME button and use the arrows to set the time.
3. Select Zone 2 and repeat steps 1 and 2.
4. Press START/STOP to begin cooking in both zones.
5. If food in one zone is done before the cook time is up, you can STOP A ZONE by selecting it and pressing START/STOP. See page 7 for further instructions.
6. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
7. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

Cooking in a Single Zone

To turn on the unit, plug the power cord into a wall socket, then press the power button [Power Icon].

Air Fry

NOTE: The temperature is preset to 200°C.

1. Install crisper plate in the drawer, then place ingredients in the drawer, and insert the drawer into the unit.
2. Select Zone 1 or Zone 2. Select AIR FRY using the arrows.
3. Press TEMP and use the arrows to set the desired temperature.
4. Press TIME and use the arrows to set the time in 1-minute increments up to 1 hour. Press START/STOP to begin cooking.
5. NOTE: During cooking, you can remove the drawer and shake or toss ingredients for even crisping.
6. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
7. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

Max Crisp

NOTE: There is no temperature adjustment available when using the Max Crisp function. The temperature is preset to 240°C.

1. Install crisper plate in the drawer, then place ingredients in the drawer, and insert the drawer into the unit.
2. Select Zone 1 or Zone 2. Select MAX CRISP using the arrows.
3. Press TIME and use the arrows to set the time in 1-minute increments up to 30 minutes. Press START/STOP to begin cooking.
4. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
5. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

Bake

NOTE: The temperature is preset to 160°C.

1. Install crisper plate in the drawer (optional), then place ingredients in the drawer and insert the drawer into the unit.
2. Select Zone 1 or Zone 2. Select BAKE using the arrows.
3. NOTE: To convert recipes from a traditional oven, reduce the temperature by 10°C.
4. Press TEMP and use the arrows to set the desired temperature.
5. Press TIME and use the arrows to set the time in 1-minute increments up to 1 hour and in 5-minute increments from 1 to 4 hours. Press START/STOP to begin cooking.
6. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
7. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

Roast

NOTE: The temperature is preset to 190°C.

1. Install crisper plate in the drawer (optional), then place ingredients in the drawer and insert the drawer into the unit.
2. Select Zone 1 or Zone 2. Select ROAST using the arrows.
3. Press TEMP and use the arrows to set the desired temperature.
4. Press TIME and use the arrows to set the time in 1-minute increments up to 1 hour and in 5-minute increments from 1 to 4 hours. Press START/STOP to begin cooking.
5. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
6. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

Reheat

NOTE: The temperature is preset to 170°C.

1. Install crisper plate in the drawer (optional), then place ingredients in the drawer, and insert the drawer into the unit.
2. Select Zone 1 or Zone 2. Select REHEAT using the arrows.
3. Press TEMP and use the arrows to set the desired temperature.
4. Press TIME and use the arrows to set the time in 1-minute increments up to 1 hour. Press START/STOP to begin reheating.
5. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
6. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

Dehydrate

NOTE: The temperature is preset to 60°C.

1. Place a single layer of ingredients in the drawer. Then install the crisper plate in the drawer on top of the ingredients and place another layer of ingredients on the crisper plate.
2. Select Zone 1 or Zone 2. Select DEHYDRATE using the arrows. The default temperature will appear on the display. Press TEMP and use the arrows to set the desired temperature.
3. Press TIME and use the arrows to set the time in 15-minute increments from 1 to 12 hours. Press START/STOP to begin dehydrating.
4. When cooking is complete, the unit will beep and "COOL" will appear on the display for 60 seconds.
5. Remove ingredients by tipping them out or using silicone-tipped tongs/utensils.

NOTE: If during cooking when using SYNC a drawer is removed for longer than 2 minutes, the program will be cancelled. You will need to re-program each zone to resume cooking.

Cleaning & Maintenance

The unit should be cleaned thoroughly after every use. Unplug the unit from the plug socket and wait until the unit is fully cooled before cleaning.

Helpful Tips

• To convert recipes from your conventional oven, reduce the temperature by 10°C. Check food frequently to avoid overcooking.
• For best results with Double Stack Pro, always place vegetables/starch in the bottom half of the drawers on the crisper plate and proteins in the upper half using the stacked meal racks.
• For consistent browning, arrange ingredients in an even layer with no overlapping. If ingredients overlap, shake them at regular intervals through the set cook time.
• Cook temperature and time can be adjusted at any time during cooking. Simply select the zone, press TEMP and use the arrows to set the temperature, or press TIME and use the arrows to set the time.
• Occasionally, the fan may blow lightweight foods around. To prevent this, secure foods (like the top slice of bread on a sandwich) with cocktail sticks.
• The crisper plates & stacked meal racks elevate ingredients so air can circulate under and around them for even, crisp results.
• After selecting a cooking function, you can press START/STOP to begin cooking immediately with default temperature and time.
• For best results with fresh vegetables and potatoes, use at least 1 tablespoon of oil. Add more oil as desired for crispiness.
• Check progress throughout cooking and remove food when the desired level of brownness is achieved. Use an instant-read thermometer to monitor internal temperature of meat & fish.
• Remove food immediately after the cook time is complete to avoid overcooking.

Troubleshooting Guide

• How do I adjust the temperature or time while using a single zone? Select the active zone, then press TEMP and use the arrows to adjust the temperature, or press TIME and use the arrows to adjust the time.
• How do I adjust the temperature or time while using dual zones? Select the desired zone, press TEMP and use the arrows to adjust the temperature, or press TIME and use the arrows to adjust the time.
• Does the unit need to pre-heat? No, the unit does not need to be pre-heated.
• Can I cook different foods in each zone and not worry about cross contamination? Yes, both zones are self-contained with separate heating elements and fans.
• How do I pause the countdown? The countdown timer will pause automatically when you remove the drawers. Reinsert the drawer within 15 minutes to resume cooking, or the zone with the drawer open will be cancelled.
• How do I pause one zone when using both zones? To pause one zone, first press the zone button, then press STOP/START. To pause both zones, simply press STOP/START.
• Is the drawer safe to put on my worktop? The drawer will heat up during cooking. Use caution when handling, and place on heat-resistant surfaces only.
• When should I use the crisper plate? Use the crisper plate when you want food to come out crispy. The plate elevates the food so air can flow under and around it for even cooking.
• When should I use the stacked meal racks? Use the stacked meal racks to cook two layers of food in one drawer. Place vegetables/starch in the bottom half and protein in the upper half. It is not recommended to mix fresh and frozen ingredients within the same drawer. For best results, cook frozen food loads within one drawer.
• Why didn't my food cook fully? Ensure the drawer is fully inserted during cooking. Arrange ingredients in an even layer with no overlapping. Shake the drawer to toss ingredients for even crispiness. Adjust temperature and time as needed.
• Why is my food burned? Check progress throughout cooking and remove food when desired brownness is achieved. Remove food immediately after the cook time is complete to avoid overcooking.
• Why do some ingredients blow around when air frying? Occasionally, the fan will blow lightweight foods around. Use wooden cocktail sticks to secure loose lightweight food, like the top slice of bread on a sandwich.
• Can I air fry wet, battered ingredients? Yes, but use proper breading technique: coat food first with flour, then egg, then breadcrumbs. Press breadcrumbs firmly onto the battered ingredients so they won't be blown off by the fan.
• Why is the unit beeping? Either the food is finished cooking, or it indicates that the other zone has started cooking.
• Why did the display screen go black? The unit is in standby mode. Press the power button to turn it back on.
• Why is there an "E" message on the display screen? The unit is not functioning properly. Please contact Customer Service at 0800 862 0453.

Manufacturer's Guarantee

The Ninja Guarantee provides additional parts and labour coverage, typically for one or two years from the date of purchase, depending on registration. It does not affect your statutory legal rights.

How to Register: If purchased directly from ninjakitchen.co.uk, registration is automatic. Otherwise, register online at ninjakitchen.co.uk/register-guarantee within 28 days of purchase. Keep your receipt as proof of purchase.

What is Covered: Repair or replacement (at Ninja's discretion) of your Ninja machine, including all parts and labour.

What is Not Covered: Normal wear and tear, accidental damage, misuse, neglect, careless operation, use for non-domestic purposes, damage from incorrect assembly or installation, use of non-genuine parts, or alterations by unauthorized parties.

How to Claim: Contact customer service at 0800 862 0453. Troubleshooting will be provided, and if necessary, a replacement part or return label will be issued.

Genuine Spares & Accessories: Available at ninjakitchen.co.uk. Damage caused by non-Ninja spares may void the guarantee.

Notes

Save these instructions for future reference.

This product should not be disposed of with other household waste. Recycle responsibly to promote the sustainable reuse of material sources. Use return and collection systems or contact the retailer for environmentally safe recycling.