Shark Duo Clean Powered Lift-Away NV831 B Vacuum Cleaner Manual

The Shark Duo Clean Powered Lift-Away NV831 B is a versatile vacuum cleaner featuring DuoClean technology with a soft roller for large debris and a bristle brush for deep-down cleaning, Powered Lift-Away mode for above-floor cleaning, Anti-Allergen Complete Seal with HEPA filter, LED headlights, and a variety of attachments. 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 Settings 6. Using Attachments 7. Cleaning Modes 8. Maintenance & Care 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: DuoClean floor nozzle, Powered Lift-Away pod, Handle with controls, Dust cup, HEPA filter, Crevice tool, Upholstery tool, Pet multi-tool, Duster crevice tool.

FeatureDescription
DuoClean TechnologyDual-brushroll system for all floor types
Powered Lift-AwayDetachable pod for portable, powerful cleaning above floors
Anti-Allergen Complete SealHEPA filter traps 99.9% of dust and allergens
LED HeadlightsIlluminates hidden debris under furniture
Large Capacity Dust CupEasy-empty, bagless design
Multi-Surface BrushrollAutomatically adjusts between carpets and hard floors
Power/Floor SelectorSwitch between carpets and hard floors
Handle ControlsPower button and floor selector on handle
Wand Release PedalEasy detachment of wand for above-floor cleaning
Storage CaddyHolds all attachments on the vacuum

Assembly & Setup

Unpack all parts and inspect contents. Assemble on a flat, stable surface.

  1. Attach the handle: Insert the handle into the top of the vacuum body until it clicks into place.
  2. Connect the hose: Attach the hose to the front of the vacuum pod and secure the wand into the hose grip.
  3. Install the floor nozzle: Slide the DuoClean floor nozzle onto the wand until it clicks.
  4. Attach accessories: Store tools on the storage caddy or attach as needed.
  5. Plug into a standard 120V AC outlet.

WARNING! Ensure all parts are securely connected before use. Keep fingers away from brushroll during assembly.

First-Time Use

Before first use, ensure the dust cup and filters are installed correctly.

  1. Power on: Press the power button on the handle.
  2. Select floor type: Use the floor selector switch (CARPET/HARD FLOOR).
  3. Begin vacuuming: Push the vacuum forward on the floor surface.
  4. For above-floor cleaning: Press the wand release pedal to detach the wand and use attachments.
  5. To use Powered Lift-Away: Detach the pod from the floor nozzle for portable cleaning.

CAUTION! Do not vacuum large objects, liquids, or hot ashes. Keep hair and loose clothing away from moving parts.

Specifications

Controls and Settings

Main controls located on the handle and vacuum body.

Handle: Power ON/OFF button, Floor selector switch (CARPET/HARD FLOOR).

Vacuum Body: Wand release pedal, Dust cup release button, Hose grip, Brushroll on/off switch (on some models).

Settings: Use floor selector for optimal cleaning on carpets (increases suction) or hard floors (reduces suction for easier glide). Powered Lift-Away mode activates automatically when pod is detached.

Using Attachments

Attach tools to the wand or hose for specialized cleaning.

  1. Detach wand: Press the wand release pedal and pull wand from floor nozzle.
  2. Select attachment: Choose crevice tool for tight spaces, upholstery tool for furniture, pet multi-tool for pet hair, duster crevice tool for dusting.
  3. Connect: Insert attachment into the end of the wand or hose.
  4. Clean: Turn on power and guide the attachment over the surface.

Tip: For best results, move attachments slowly over the area being cleaned.

Cleaning Modes

Three primary cleaning modes: Floor cleaning, Above-floor cleaning, Powered Lift-Away.

  1. Floor cleaning: Vacuum is fully assembled; use floor selector for surface type.
  2. Above-floor cleaning: Detach wand and attach tools for furniture, stairs, ceilings.
  3. Powered Lift-Away: Detach pod from floor nozzle for portable, powerful cleaning of areas like under furniture or inside cars.

WARNING! Always turn off the vacuum before changing modes or attachments. Do not use the vacuum without the dust cup and filters installed.

Maintenance & Care

Regular maintenance ensures optimal performance.

  1. Empty dust cup: Press release button and empty when full or after each use.
  2. Clean filters: Rinse HEPA filter and foam filter under cold water every month. Air dry completely for 24 hours before reinstalling.
  3. Check for clogs: Remove hose and wand to clear any blockages.
  4. Clean brushroll: Remove floor nozzle and clear any wrapped hair or debris from the brushroll.
  5. Inspect belts and parts: Replace if worn or damaged.

CAUTION! Unplug vacuum before performing any maintenance. Do not use damaged parts.

Regulatory Information

This appliance complies with FCC Part 15 Subpart B. Operation is subject to the condition that this device does not cause harmful interference. Copyright © SharkNinja Operating LLC. Shark and DuoClean are registered trademarks. For support, visit sharkclean.com or contact 1-800-798-7398.

Troubleshooting

SymptomPossible CauseCorrective Action
Vacuum won't turn onPower cord/outletCheck if plugged in; try a different outlet; check circuit breaker.
Loss of suctionFull dust cup/clogEmpty dust cup; check hose, wand, and nozzle for clogs; clean filters.
Brushroll not spinningObstruction/beltTurn off and unplug; remove debris from brushroll; check and replace belt if necessary.
Vacuum is noisyObstructionCheck for blockages in hose, wand, or nozzle; ensure filters are clean and properly installed.
HEPA filter indicator light onDirty filterRemove and rinse HEPA filter under cold water; air dry completely for 24 hours.

Reset: Unplug vacuum for 10 minutes, then plug back in.

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

Shark Duo Clean Powered Lift-Away NV831 B Vacuum Cleaner Manual © - All Rights Reserved 2025