Shark FLEX DuoClean HV394Q Series Vacuum Cleaner Manual

The Shark FLEX DuoClean HV394Q Series is a versatile corded stick vacuum featuring DuoClean technology with a soft roller for hard floors and a bristle brush for carpets, Anti-Allergen Complete Seal technology, LED headlights, a Flex hose for above-floor cleaning, and a detachable pod for handheld use. It includes multiple attachments for various cleaning tasks. 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 Parts 6. Cleaning Modes & Attachments 8. Maintenance & Care 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Main vacuum body with DuoClean floor head, Flex hose, Dust Cup, Handheld Pod, Crevice Tool, Upholstery Tool, Duster Crevice Tool, and Storage Caddy.

Feature	Description
DuoClean Technology	Dual-brushroll system for both hard floors and carpets
Anti-Allergen Complete Seal	Traps 99.9% of dust and allergens inside the vacuum
LED Headlights	Illuminates debris under furniture and in dark areas
Flex Hose	Stretches for above-floor cleaning without bending
Detachable Pod	Converts to a lightweight handheld vacuum
Power Cord	Long cord for extended reach
ON/OFF Switch	Controls vacuum power
Floor/Surface Switch	Selects between floor mode and above-floor mode
Dust Cup Release	Button to empty the dust cup
Wand Release Pedal	Foot pedal to detach the wand

Assembly & Setup

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

Attach the wand: Insert the wand into the main vacuum body until it clicks.
Attach the floor head: Connect the DuoClean floor head to the wand until it locks.
Install attachments: Store tools on the storage caddy or attach to the vacuum as needed.
Plug into a standard 120V AC outlet.

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

First-Time Use

Plug in the vacuum and familiarize yourself with the controls.

Select cleaning mode: Use the Floor/Surface switch to choose between floor cleaning or above-floor cleaning with the Flex hose.
Adjust suction: The vacuum automatically adjusts suction based on floor type when in floor mode.
Use attachments: Detach the handheld pod and connect tools for furniture, stairs, or crevices.
Empty dust cup: Press the release button and empty the cup after each use or when full.

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

Specifications

Model: Shark FLEX DuoClean HV394Q Series.
Technology: DuoClean with Anti-Allergen Complete Seal.
Power Source: Corded, 120V AC, 60Hz.
Cord Length: XX feet (refer to product label).
Attachments Included: Crevice Tool, Upholstery Tool, Duster Crevice Tool.
Dust Cup Capacity: XX liters (refer to product label).

Filtration:Washable foam and felt filters. Wand Release PedalFoot pedal to detach the wand

Assembly & Setup

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

Attach the wand: Insert the wand into the main vacuum body until it clicks.

Attach the floor head: Connect the DuoClean floor head to the wand until it locks.

Install attachments: Store tools on the storage caddy or attach to the vacuum as needed.

Plug into a standard 120V AC outlet.

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

First-Time Use

Plug in the vacuum and familiarize yourself with the controls.

Select cleaning mode: Use the Floor/Surface switch to choose between floor cleaning or above-floor cleaning with the Flex hose.

Adjust suction: The vacuum automatically adjusts suction based on floor type when in floor mode.

Use attachments: Detach the handheld pod and connect tools for furniture, stairs, or crevices.

Empty dust cup: Press the release button and empty the cup after each use or when full.

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

Specifications

Model: Shark FLEX DuoClean HV394Q Series.

Technology: DuoClean with Anti-Allergen Complete Seal.

Power Source: Corded, 120V AC, 60Hz.

Cord Length: XX feet (refer to product label).

Attachments Included: Crevice Tool, Upholstery Tool, Duster Crevice Tool.

Dust Cup Capacity: XX liters (refer to product label).

Filtration: Washable foam and felt filters.

Weight: XX lbs (main unit).

Warranty: XX-year limited warranty (see documentation).

Controls and Parts

Main unit controls: ON/OFF switch, Floor/Surface switch, Dust Cup Release, Wand Release Pedal.

Attachments: DuoClean Floor Head, Flex Hose, Handheld Pod, Crevice Tool, Upholstery Tool, Duster Crevice Tool.

Operation: Use ON/OFF to power; Floor/Surface to toggle modes; press Dust Cup Release to empty; step on Wand Release Pedal to detach wand for handheld use. The LED headlights activate automatically when the vacuum is on.

Cleaning Modes & Attachments

Two primary modes: Floor Cleaning and Above-Floor Cleaning with Flex hose.

Floor Cleaning: Attach floor head; use on carpets and hard floors. The DuoClean brushrolls adjust automatically.

Above-Floor Cleaning: Detach wand using pedal; attach Flex hose and desired tool for furniture, stairs, ceilings, or tight spaces.

Handheld Mode: Detach the pod from the wand for portable spot cleaning.

Tip: Regularly check and clear brushrolls of hair or debris to maintain performance.

Maintenance & Care

Unplug before maintenance. Empty dust cup after each use. Wash filters monthly.

Empty dust cup: Press release button, remove cup, and empty into trash.

Clean filters: Remove foam and felt filters; rinse with cold water and air dry completely before reinstalling.

Clear brushrolls: Use scissors to cut away wrapped hair or fibers from both brushrolls.

Inspect hose and attachments: Remove clogs with a long object if suction decreases.

WARNING! Do not use without filters installed. Ensure all parts are completely dry before reassembly.

Regulatory Information

This appliance complies with relevant safety standards. Copyright © SharkNinja Operating LLC. For support, visit sharkclean.com or contact 1-800-798-7398. Keep these instructions for future reference.

Troubleshooting

Symptom Possible Cause Corrective Action

Vacuum won't turn on Power cord not plugged in Plug into a working outlet; check ON/OFF switch.

Loss of suction Full dust cup or clog Empty dust cup; check hose, wand, and attachments for blockages.

Brushroll not spinning Debris wrapped around brushroll Unplug vacuum and clear hair/debris from both brushrolls.

Vacuum overheats Clogged filters or blocked airflow Clean filters; ensure dust cup is empty and airways are clear.

LED lights not working Bulb issue or connection Contact customer service if lights fail; does not affect cleaning performance.

Reset: Unplug for 60 minutes if motor overheats; plug back in.

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

Shark FLEX DuoClean HV394Q Series Vacuum Cleaner Manual © - All Rights Reserved 2025

Symptom	Possible Cause	Corrective Action
Vacuum won't turn on	Power cord not plugged in	Plug into a working outlet; check ON/OFF switch.
Loss of suction	Full dust cup or clog	Empty dust cup; check hose, wand, and attachments for blockages.
Brushroll not spinning	Debris wrapped around brushroll	Unplug vacuum and clear hair/debris from both brushrolls.
Vacuum overheats	Clogged filters or blocked airflow	Clean filters; ensure dust cup is empty and airways are clear.
LED lights not working	Bulb issue or connection	Contact customer service if lights fail; does not affect cleaning performance.