Shark FLEX Duoclean HV391 Vacuum Cleaner Manual

The Shark FLEX Duoclean HV391 is a versatile corded upright vacuum cleaner featuring DuoClean technology with a soft roller for hard floors and a bristle brush for carpets, LED headlights, Anti-Allergen Complete Seal Technology, a large-capacity dust cup, a flexible wand for above-floor cleaning, multiple attachments (crevice tool, dusting brush, pet multi-tool), and a 30-foot power cord. 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, LED headlights, Anti-Allergen Complete Seal filtration, large dust cup, flexible wand, crevice tool, dusting brush, pet multi-tool, 30-foot power cord.

FeatureDescription
DuoClean TechnologyCombines soft roller for hard floors and bristle brush for carpets
LED HeadlightsIlluminates dark areas under furniture
Anti-Allergen Complete SealTraps 99.9% of dust and allergens inside the vacuum
Large Dust CupEasy-to-empty, no bags required
Flexible WandLocks in place for above-floor cleaning
Crevice ToolFor tight spaces and corners
Dusting BrushFor delicate surfaces and dusting
Pet Multi-ToolCombines bristles and crevice tool for pet hair
30-Foot Power CordExtended reach for large rooms
POWER ButtonTurns vacuum on/off

Assembly & Setup

Unpack and inspect all parts. Assemble before first use.

  1. Attach handle: Insert handle into body until it clicks into place.
  2. Attach hose: Connect hose to vacuum body and wand.
  3. Install attachments: Store crevice tool, dusting brush, and pet multi-tool on dock.
  4. Plug into electrical outlet.

WARNING! Ensure vacuum is unplugged during assembly. Keep fingers away from moving parts.

First-Time Use

Plug in vacuum; press POWER button to start.

  1. Select floor setting: Use brush roll switch for hard floors or carpets.
  2. Adjust suction: Use suction control slider on handle for different surfaces.
  3. Empty dust cup: Press release button to remove and empty when full.
  4. Use attachments: Detach wand and connect desired tool for above-floor cleaning.

CAUTION! Do not vacuum large objects, liquids, or hot ashes. Keep cord away from heated surfaces.

Specifications

Controls and Settings

Main controls: POWER button, brush roll switch, suction control slider, dust cup release button.

Handle: POWER button, suction control slider. Body: Brush roll switch, dust cup release, hose dock.

Settings: Brush roll ON/OFF for carpets/hard floors; suction control for high/low power; LED lights auto-on when powered.

Using Attachments

For above-floor cleaning: detach wand and connect tools.

  1. Turn off vacuum and unplug before changing attachments.
  2. Detach wand: Press release button on handle.
  3. Connect tool: Insert crevice tool, dusting brush, or pet multi-tool into wand end.
  4. Select suction setting: Use low for delicate surfaces, high for deep cleaning.

Tip: Store attachments on dock when not in use to keep them handy.

Cleaning Modes

Supports floor cleaning, above-floor cleaning, and detailed cleaning with attachments.

  1. Floor cleaning: Use DuoClean nozzle; switch brush roll as needed.
  2. Above-floor cleaning: Use wand with attachments for furniture, curtains, ceilings.
  3. Detailed cleaning: Use crevice tool for edges; dusting brush for shelves.
  4. Pet hair removal: Use pet multi-tool on upholstery and stairs.

WARNING! Do not use vacuum to pick up sharp objects, which may damage dust cup or hose.

Maintenance & Care

Regular maintenance ensures optimal performance.

  1. Empty dust cup: After each use or when full.
  2. Clean filters: Rinse HEPA filter and foam filter every 3 months; air dry completely.
  3. Check brush roll: Remove hair and debris monthly.
  4. Inspect hose: Clear clogs if suction reduces.

CAUTION! Unplug before maintenance. Do not use damaged parts.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © SharkNinja Operating LLC. For support, visit sharkclean.com or contact 1-800-798-7398.

Troubleshooting

SymptomPossible CauseCorrective Action
Vacuum won't turn onPower cord/outletCheck plug connection; try different outlet; ensure POWER button pressed.
Loss of suctionFull dust cup/clogEmpty dust cup; check hose and nozzle for clogs; clean filters.
Brush roll not spinningDebris/switchTurn off, unplug, and clear debris from brush roll; ensure brush roll switch is ON.
OverheatingClog/filterTurn off, unplug, let cool; clear clogs; clean or replace filters.
LED lights not workingConnectionEnsure vacuum is on; lights may require service if faulty.

Reset: Unplug for 60 minutes if overheating occurs.

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

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