Shark STRATOS CLEAN SENSE IQ MultiFLEX IZ840H Vacuum Cleaner Manual

The Shark STRATOS CLEAN SENSE IQ MultiFLEX IZ840H is a versatile cordless stick vacuum featuring Clean Sense IQ dirt detection technology, MultiFLEX technology for under-furniture reach, a self-cleaning brushroll, DuoClean PowerFins for floor-to-carpet cleaning, an Anti-Allergen Complete Seal with HEPA filter, LED headlights, and a removable pod for handheld cleaning. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Assembly & Setup 3. First-Time Use 4. Specifications 5. Controls and Indicators 6. Cleaning Modes & Attachments 7. Emptying the Dust Cup 8. Maintenance & Care 9. Battery & Charging 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Motorized floor nozzle with DuoClean PowerFins, Clean Sense IQ sensor, MultiFLEX folding handle, removable battery pod, LED headlights, Anti-Allergen Complete Seal system, and various attachments.

FeatureDescription
Clean Sense IQAutomatically increases suction when dirt is detected
MultiFLEX TechnologyFolds flat for cleaning under furniture and beds
Self-Cleaning BrushrollReduces hair wrap for maintenance-free cleaning
DuoClean PowerFinsCombines soft roller and PowerFins for all floor types
Anti-Allergen Complete SealHEPA filter traps 99.9% of dust and allergens
LED HeadlightsIlluminates hidden dirt in dark areas
Removable PodConverts to a handheld vacuum for above-floor cleaning
Battery IndicatorLED display shows remaining runtime
Wand Release ButtonQuickly detaches wand for storage or handheld use
Charging DockWall-mountable dock for convenient storage and charging

Assembly & Setup

Unpack all components and inspect for damage.

  1. Attach the wand: Insert the wand into the floor nozzle until it clicks.
  2. Attach the handle: Connect the handle to the top of the wand.
  3. Install the battery: Insert the battery pod into the main body until securely locked.
  4. Mount the charging dock: Secure to wall using provided screws, ensuring proper clearance.
  5. Place vacuum on dock: Align contacts and set vacuum onto charging dock.

WARNING! Ensure the vacuum is powered OFF during assembly. Keep fingers clear of moving parts.

First-Time Use

Fully charge the vacuum before first use.

  1. Initial Charge: Place on dock; charge until battery indicator shows full (approx. 4 hours).
  2. Power On: Press the power button on the handle.
  3. Select Mode: Use the mode button to toggle between Eco and Max suction.
  4. Begin Cleaning: Push vacuum forward on floor; Clean Sense IQ will activate automatically on dirt.
  5. Use MultiFLEX: Press the release button and fold handle to clean under low furniture.

CAUTION! Do not use on wet surfaces or to pick up liquids, flammable materials, or sharp objects.

Specifications

Controls and Indicators

Main controls located on the handle. Power Button: Turns vacuum ON/OFF. Mode Button: Toggles between Eco (standard) and Max (high power) suction. Battery Indicator: LED lights show remaining charge (4=full, 1=low). Clean Sense IQ Indicator: Lights up blue when increased suction is activated. Headlights: Automatically turn on when vacuum is powered.

Handle Features: Wand release button, trigger for handheld mode attachment release.

Maintenance Indicators: Filter icon flashes when filter needs cleaning. Brushroll icon flashes if brushroll is obstructed.

Cleaning Modes & Attachments

Use appropriate mode and attachment for each cleaning task.

  1. Floor Cleaning: Use floor nozzle with DuoClean PowerFins for carpets and hard floors.
  2. Above-Floor Cleaning: Remove pod from wand and attach desired tool (crevice, dusting brush).
  3. Under Furniture: Engage MultiFLEX to fold handle flat.
  4. Upholstery & Stairs: Use upholstery tool or pet multi-tool in handheld mode.

Tip: For best results on carpets, make slow, overlapping passes.

Emptying the Dust Cup

Empty dust cup after each use or when full indicator appears.

  1. Power OFF and remove vacuum from dock.
  2. Press dust cup release button and lift cup away from body.
  3. Hold over trash can and press bottom latch to open door; debris will fall out.
  4. Close door securely until it clicks.
  5. Reattach dust cup to main body until it clicks into place.

WARNING! Do not use if dust cup is damaged or door does not seal properly.

Maintenance & Care

Regular maintenance ensures optimal performance.

CAUTION! All parts must be completely dry before reassembly to prevent damage.

Battery & Charging

Use only the provided charger and battery.

  1. Charging: Place vacuum on dock; indicator will pulse while charging.
  2. Storage: For long-term storage, charge battery to 50% and store in a cool, dry place.
  3. Battery Removal: Press battery release buttons and slide pod out.
  4. Replacement: Use only Shark-approved replacement batteries (model RBAT850).

WARNING! Do not expose battery to fire, water, or extreme temperatures. Do not attempt to disassemble.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © SharkNinja Operating LLC. All trademarks are property of SharkNinja. Battery contains lithium-ion; dispose of according to local regulations. For support, visit sharkclean.com or contact 1-800-798-7398.

Troubleshooting

SymptomPossible CauseCorrective Action
Vacuum won't turn onBattery not charged/insertedCharge battery fully; ensure pod is securely locked.
Reduced suctionFull dust cup/clogged filterEmpty dust cup; check and clean filters; clear hose/ nozzle blockages.
Brushroll not spinningObstruction/hair wrapPower OFF, clear debris and cut away wrapped hair from brushroll.
Battery drains quicklyOld battery/Max mode useUse Eco mode for general cleaning; replace battery if runtime is consistently short.
Clean Sense IQ not activatingSensor dirty/mode settingClean sensor window on floor nozzle; ensure not in Max mode (IQ is disabled in Max).
Vacuum won't charge on dockPoor contact/dock issueClean charging contacts on vacuum and dock; ensure dock is properly mounted and powered.

Reset: Remove battery for 60 seconds, then reinsert.

Service: 1-800-798-7398; sharkclean.com

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