1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Nilfisk Aero 21 5 Gallon Professional Wet/Dry HEPA Vac. Please read this manual thoroughly before using the appliance and retain it for future reference.
The Nilfisk Aero 21 is a contractor-grade wet/dry vacuum designed for robust performance and durability. It features a low-noise level, a fully-automatic filter cleaning system, and integrated storage for accessories.
Image showing the Nilfisk Aero 21 5 Gallon Professional Wet/Dry HEPA Vac. The blue canister unit is on wheels, with a grey corrugated hose connected to the inlet. A long grey wand with a black floor tool is attached to the end of the hose. The unit features a black top with a power switch and a handle.
2. Safety Information
Always observe basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, or injury.
- Do not leave the appliance unattended when plugged in. Unplug from outlet when not in use and before servicing.
- Do not use outdoors or on wet surfaces unless specifically designed for such use.
- Do not allow to be used as a toy. Close attention is necessary when used by or near children.
- Use only as described in this manual. Use only manufacturer's recommended attachments.
- Do not use with damaged cord or plug. If appliance is not working as it should, has been dropped, damaged, left outdoors, or dropped into water, return it to a service center.
- Do not pull or carry by cord, use cord as a handle, close a door on cord, or pull cord around sharp edges or corners. Do not run appliance over cord. Keep cord away from heated surfaces.
- Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
- Do not handle plug or appliance with wet hands.
- Do not put any object into openings. Do not use with any opening blocked; keep free of dust, lint, hair, and anything that may reduce air flow.
- Keep hair, loose clothing, fingers, and all parts of body away from openings and moving parts.
- Do not pick up anything that is burning or smoking, such as cigarettes, matches, or hot ashes.
- Use extra care when cleaning on stairs.
- Do not use to pick up flammable or combustible liquids, such as gasoline, or use in areas where they may be present.
- This vacuum is equipped with a Certified HEPA Filter (99.97% @ 0.3 microns) and is suitable for hazardous material collection such as lead, silica, asbestos, and mold. Always follow local regulations and safety guidelines when handling such materials.
3. Package Contents
Verify that all items are present in the packaging before discarding any materials.
- Nilfisk Aero 21 Wet/Dry HEPA Vac Unit
- Suction Hose
- Extension Wand(s)
- Floor Tool
- Crevice Tool
- Brush Tool
- HEPA Filter (pre-installed or separate)
- Synthetic Dust Bag
- Instruction Manual
4. Setup
4.1 Unpacking
- Carefully remove all components from the packaging.
- Inspect the unit for any signs of damage. Do not operate if damaged.
- Ensure all packing materials are removed from the vacuum's interior.
4.2 Attaching Hose and Accessories
- Insert the large end of the suction hose into the inlet port on the front of the vacuum unit until it clicks securely into place.
- Attach the desired extension wand(s) to the hose handle.
- Connect the appropriate floor tool or accessory (e.g., crevice tool, brush tool) to the end of the extension wand.
4.3 Filter Installation (Dry Operation)
For dry vacuuming, ensure the HEPA filter is correctly installed. The synthetic dust bag should also be used for optimal dry debris collection and filter protection.
- Open the latches and remove the motor head from the canister.
- Ensure the HEPA filter is securely seated over the filter cage.
- Place the synthetic dust bag inside the canister, aligning the opening with the hose inlet.
- Replace the motor head and secure the latches.
4.4 Power Connection
Plug the power cord into a grounded electrical outlet. Ensure the voltage matches the specifications of the vacuum.
5. Operating Instructions
5.1 Powering On/Off
Locate the power switch on the top of the motor head. Press the switch to the "I" position to turn the vacuum on, and to the "O" position to turn it off.
5.2 Dry Vacuuming
For dry debris, ensure the HEPA filter and synthetic dust bag are installed. This vacuum is suitable for collecting dust, dirt, and fine particles, including hazardous materials like asbestos, silica, and mold, when used with the certified HEPA filter.
5.3 Wet Vacuuming
For wet spills, remove the synthetic dust bag. The HEPA filter can remain installed as it is designed for wet/dry use, but ensure it is clean and dry before switching back to dry vacuuming. The vacuum will automatically shut off when the liquid reaches its maximum capacity.
5.4 Push & Clean Filter Cleaning System
The "Push & Clean" system helps maintain high suction performance. During dry vacuuming, if suction power decreases, press the "Push & Clean" button (if present, or follow specific instructions for your model's filter cleaning mechanism) to dislodge dust from the filter. This should be done with the vacuum running.
5.5 Blower Port Function
The Nilfisk Aero 21 features a blower port. To use, detach the suction hose from the inlet port and attach it to the blower port located on the rear of the motor head. This function can be used for blowing away debris from hard-to-reach areas or inflating objects.
5.6 Recommended Uses
- Asbestos, Silica, Mold: Use with the certified HEPA filter for safe collection of hazardous dusts.
- Hard Floor: Ideal for cleaning hard surfaces like concrete, tile, and wood.
- Carpet: Effective for general carpet cleaning.
- Furniture: Use appropriate attachments for upholstery and furniture.
- Bare Floor: Suitable for all types of bare flooring.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your vacuum.
6.1 Emptying the Canister
For dry debris, unlatch the motor head and carefully remove the synthetic dust bag. Dispose of the bag according to local regulations. For wet spills, unlatch the motor head and pour out the liquid into a suitable drain.
6.2 Filter Cleaning and Replacement
The HEPA filter should be regularly inspected and cleaned. For dry dust, use the "Push & Clean" system. For more thorough cleaning, remove the filter and gently tap it to dislodge debris. If heavily soiled or damaged, replace the filter with a genuine Nilfisk replacement part. Ensure the filter is completely dry before re-installing for dry vacuuming.
6.3 Cleaning Hose and Accessories
Wipe down the exterior of the vacuum, hose, and accessories with a damp cloth. Do not immerse the motor head in water. Ensure all components are dry before storage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Vacuum does not turn on. | No power to outlet; Power cord not plugged in; Power switch off; Thermal cut-off activated. | Check power outlet; Plug in power cord securely; Turn power switch to "I"; Allow unit to cool down for 30 minutes. |
| Loss of suction. | Hose or attachment clogged; Canister full; Filter clogged; Hose not securely attached. | Check and clear clogs; Empty canister; Clean or replace filter; Ensure hose is securely connected. Use "Push & Clean" system. |
| Water leaking from unit. | Canister overfilled; Seal not properly seated. | Empty canister; Check and reseat motor head seal. |
| Unusual noise. | Obstruction in fan or motor; Damaged motor. | Turn off and unplug unit, check for obstructions. If noise persists, contact customer support. |
8. Specifications
| Feature | Specification |
|---|---|
| Model Name | Aero 21 |
| Model Number | 107418440 |
| Capacity | 5 Gallons |
| Airflow | 127 CFM |
| Waterlift | 84 Inches |
| Wattage | 1000 watts |
| Noise Level | 64 dB(A) |
| Filter Type | Certified HEPA Filter (99.97% @ 0.3 microns) |
| Hose Length | 11.5 Feet |
| Product Dimensions | 15 x 15 x 20 inches |
| Item Weight | 16.5 pounds |
| Color | Blue |
| Manufacturer | Nilfisk Industrial Vacuums |
9. Warranty and Support
9.1 Warranty Information
The Nilfisk Aero 21 5 Gal. Professional Wet/Dry HEPA Vac comes with a 2-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
9.2 Customer Support
For technical assistance, troubleshooting not covered in this manual, or warranty inquiries, please contact Nilfisk customer support. Refer to the official Nilfisk website or product packaging for the most current contact information.
Manufacturer: Nilfisk Industrial Vacuums
