Shark FLEX Duoclean HV394QS Vacuum Cleaner Manual

The Shark FLEX Duoclean HV394QS is a versatile corded stick vacuum featuring DuoClean technology with a soft roller for hard floors and a bristle brush for carpets, PowerFins brushroll to prevent hair wrap, LED headlights, Anti-Allergen Complete Seal with HEPA filter, FLEX technology for under-furniture cleaning, multiple cleaning modes (floor, handheld, above-floor), and various 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 Modes 6. Using Attachments 7. Cleaning & Maintenance 8. Emptying the Dust Cup 9. Care & Storage 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main vacuum body with DuoClean head, handheld pod, wand, power cord, and accessory storage caddy.

Feature	Description
DuoClean Technology	Combines soft roller for hard floors and bristle brush for carpets
PowerFins Brushroll	Anti-hair wrap technology to reduce tangles
LED Headlights	Illuminates debris under furniture and in dark areas
Anti-Allergen Complete Seal	HEPA filter traps 99.9% of dust and allergens
FLEX Technology	Bends to clean under furniture without moving it
Cleaning Modes	Floor, handheld, and above-floor cleaning
Attachments	Comes with crevice tool, dusting brush, pet multi-tool, and upholstery tool
Power Cord	25-foot cord for extended reach
Dust Cup Capacity	0.9 dry quarts, easy-empty bottom release
Washable Filters	Pre-motor and HEPA filters are washable for maintenance

Assembly & Setup

Unpack and inspect all parts. Assemble before first use.

Attach wand to vacuum body: Insert wand into socket until it clicks.
Connect cleaning head: Align head with wand connector and push until secure.
Install attachments: Store on caddy or attach directly to vacuum ports.
Plug into AC power outlet.

WARNING! Ensure vacuum is unplugged during assembly. Keep hair, loose clothing, and fingers away from brushroll.

First-Time Use

Plug in vacuum; select appropriate cleaning mode.

Select floor type: Use DuoClean head for hard floors and carpets automatically.
Adjust suction: Use power button for normal or max suction (for deep cleaning).
Use FLEX mode: Press release lever to bend wand for under-furniture cleaning.
Switch to handheld: Press release button to detach pod for above-floor cleaning.

CAUTION! Do not vacuum wet spills, large objects, or hot ashes. Avoid vacuuming cords.

Specifications

Model: Shark FLEX Duoclean HV394QS.
Technology: DuoClean with PowerFins brushroll.
Filtration: Anti-Allergen Complete Seal with HEPA filter.
Cord Length: 25 feet.
Dust Cup Capacity: 0.9 dry quarts.
Attachments: Crevice tool, dusting brush, pet multi-tool, upholstery tool.
Weight: 12.5 lbs (assembled).
Power Source: 120V AC, 60Hz.
Warranty: 5-year limited warranty.

Controls and Modes

Power button: Turns vacuum on/off and cycles through suction modes (Normal/Max). FLEX lever: Releases wand to bend for under-furniture cleaning. Handheld release: Detaches pod for above-floor cleaning. Brushroll control: On/off switch for brushroll (for delicate rugs).

Cleaning Modes: Floor mode (with wand and head), Handheld mode (detached pod with attachments), Above-floor mode (with extension wand). LED lights: Automatically illuminate when vacuum is on.

Using Attachments

Attach tools directly to handheld pod or extension wand.

Crevice tool: For tight spaces, corners, and between cushions.
Dusting brush: For delicate surfaces, blinds, and shelves.
Pet multi-tool: Combines bristles and upholstery tool for pet hair.
Upholstery tool: For sofas, chairs, and stairs.

Tip: Ensure attachment clicks into place before use. Store attachments on caddy when not in use.

Cleaning & Maintenance

Regular maintenance ensures optimal performance.

Empty dust cup: When debris reaches MAX line; press bottom release.
Clean brushroll: Remove head, clear any hair or debris wrapped around brushroll.
Wash filters: Rinse pre-motor and HEPA filters every 3 months (air dry completely).
Check for blockages: Inspect hose, wand, and nozzles if suction decreases.

WARNING! Unplug vacuum before maintenance. Do not use damaged filters or brushroll.

Emptying the Dust Cup

Empty dust cup when debris reaches MAX line or after each use.

Hold dust cup over trash can.
Press bottom release latch; bottom opens to empty debris.
Close latch securely until it clicks.
Reattach dust cup to vacuum.

CAUTION! Empty dust cup outdoors if containing fine dust or allergens. Avoid touching filter during emptying.

Care & Storage

Store in a dry place. Wrap cord around cord hooks. Keep attachments in caddy.

CAUTION! Do not store vacuum with wet filters. Avoid extreme temperatures and direct sunlight.

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. This product is covered by a 5-year limited warranty. Register your product online at sharkclean.com/register.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Vacuum won't turn on	Power cord/outlet	Check power cord connection; try different outlet; ensure power button is pressed.
Loss of suction	Full dust cup/blockage	Empty dust cup; check hose, wand, and head for clogs; clean filters.
Brushroll not spinning	Hair wrap/obstruction	Unplug vacuum; remove head and clear brushroll of hair and debris.
Vacuum overheating	Blockage/filter	Turn off and unplug; check for blockages; clean filters; let cool for 1 hour.
Unusual noise	Foreign object in brushroll or hose	Unplug; inspect brushroll, hose, and attachments; remove any objects.

Reset: Unplug vacuum for 1 hour if overheating occurs.

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