Shark BU3521EU Vacuum Cleaner Manual

The Shark BU3521EU is a versatile upright vacuum cleaner designed for powerful deep cleaning on both carpets and hard floors. It features DuoClean technology with a soft roller for hard floors and a bristle brush for carpets, Anti-Allergen Complete Seal technology with a HEPA filter, LED headlights, and a swivel steering for easy maneuverability. 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. Maintenance & Cleaning 8. Emptying the Dust Cup 9. Filter Care 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main vacuum body with DuoClean floor head, handle with controls, dust cup, HEPA filter, crevice tool, dusting brush, and upholstery tool.

Feature	Description
DuoClean Technology	Combines soft roller for hard floors and bristle brush for carpets
Anti-Allergen Complete Seal	Seals in 99.9% of dust and allergens with HEPA filter
LED Headlights	Illuminates dark areas under furniture
Swivel Steering	Provides easy maneuverability around obstacles
Lift-Away Mode	Detachable pod for portable above-floor cleaning
Large Dust Cup	Easy-empty, bagless design
Power Switch	Turns vacuum on/off
Brush Roll Control	Engages/disengages brush roll for different surfaces
Handle Controls	For power and brush roll settings
Attachments	Crevice tool, dusting brush, upholstery tool included

Assembly & Setup

Unpack and inspect all parts. Assemble before first use.

Attach handle: Insert handle into main body until it clicks into place.
Install floor head: Connect the DuoClean floor head to the vacuum body.
Attach hose: Connect the hose to the port on the vacuum body.
Install filters: Place the HEPA filter and pre-motor filter as indicated.
Plug into AC power.

WARNING! Ensure vacuum is unplugged during assembly. Handle with care to avoid injury.

First-Time Use

Before first use, ensure all filters are installed and dust cup is empty.

Plug in vacuum to a suitable power outlet.
Turn on power switch on the handle.
Select surface setting: Use brush roll control for carpets (ON) or hard floors (OFF).
Begin vacuuming: Push vacuum forward and back in slow, overlapping strokes.
Use Lift-Away mode: Detach pod for stairs, furniture, or above-floor cleaning.

CAUTION! Keep hair, loose clothing, and fingers away from brush roll and openings.

Specifications

Model: Shark BU3521EU.
Technology: DuoClean with Anti-Allergen Complete Seal.
Filtration: HEPA filter captures 99.9% of dust and allergens.
Dust Cup Capacity: 0.8 liters.
Cord Length: 7.5 meters.
Attachments: Crevice tool, dusting brush, upholstery tool.
Power Source: 220-240V AC, 50-60Hz.
Weight: 6.8 kg.
Warranty: 5-year limited warranty.

Controls and Settings

Main controls located on handle and vacuum body.

Handle: Power switch, brush roll on/off button.

Vacuum Body: Dust cup release, hose release, floor head release.

Settings: Brush roll ON for carpets; OFF for hard floors or delicate rugs. Lift-Away mode: Press release button to detach pod. LED lights: Automatically illuminate when vacuum is on.

Using Attachments

Attachments for above-floor cleaning: crevice tool, dusting brush, upholstery tool.

Detach hose from vacuum body.
Connect desired attachment to end of hose.
Use for cleaning tight spaces, furniture, shelves, or curtains.
Reattach hose to vacuum when finished.

Tip: Ensure vacuum is turned off when changing attachments.

Maintenance & Cleaning

Regular maintenance ensures optimal performance.

Check brush roll: Regularly remove hair and debris wrapped around brush roll.
Inspect floor head: Clear any blockages in suction path.
Wipe exterior: Use a dry cloth to clean vacuum body.
Store properly: Wrap cord around cord hooks; store in a dry place.

WARNING! Always unplug vacuum before performing any maintenance.

Emptying the Dust Cup

Empty dust cup when full or after each use for best suction.

Turn off and unplug vacuum.
Press dust cup release button to remove cup.
Hold over trash bin and press bottom release to open lid.
Tap gently to remove dust and debris.
Close lid and reattach dust cup until it clicks.

CAUTION! Do not overfill dust cup. Empty before it reaches MAX line.

Filter Care

Filters require regular cleaning to maintain performance and air quality.

Pre-motor filter: Rinse under cold water every month. Air dry for 24 hours before reinstalling.
HEPA filter: Tap gently to remove dust every 3 months. Replace annually or as needed.
Ensure filters are completely dry before reinserting to prevent mold or damage.

Note: Do not use vacuum without filters installed.

Regulatory Information

CE marked: Complies with European safety, health, and environmental requirements. Copyright © SharkNinja Operating LLC. For support, visit www.sharkclean.eu or contact customer service at 00800 00 111 111. Dispose of product in accordance with local regulations for electronic waste.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Loss of suction	Full dust cup or clog	Empty dust cup; check hose, floor head, and filters for blockages.
Brush roll not spinning	Obstruction or belt issue	Clear debris from brush roll; check for worn belt and replace if necessary.
Vacuum won't turn on	Power source or switch	Check power outlet and cord; ensure power switch is engaged.
Unusual noise	Foreign object in suction path	Turn off and inspect hose, floor head, and dust cup for obstructions.
Overheating	Clogged filters or blocked airflow	Clean or replace filters; ensure all pathways are clear; allow vacuum to cool.

Reset: Unplug vacuum for 60 minutes if overheating occurs.

Service: 00800 00 111 111; www.sharkclean.eu