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Kaz 5520B Ultrasonic Humidifier User Manual

Kaz 5520B Ultrasonic Humidifier FEATURE


Kaz 5520B Ultrasonic Humidifier

Kaz 5520B Ultrasonic Humidifier PRODUCT

Important Safety Instructions


  1. Before using the humidifier, extend the cord and inspect for any signs of damage. Do not use the product if the cord has been damaged.
  2. Always place the humidifier on a firm, flat, level surface. Keep the cord away from heated surfaces and out of the way, where it cannot be stepped on or tripped over.
  3. Do not place the humidifier directly on wood furniture or other surfaces that could be damaged by water. Protect by placing the humidifier on a non-metallic waterproof surface.
  4. Do not place in direct sunlight, high-temperature areas, or near computers or sensitive electronic equipment.
  5. Do not operate outdoors, this appliance is intended for indoor use.
  6. Do not operate without water. Turn off the unit when the tank is empty.
  7. Do not add any medications (e.g., do not add Kaz Inhalant or Vicks VapoSteam) into the Mist Nozzle, Base, Reservoir or Water Tank. Do not cover, or insert objects into, any openings on the unit.
  8. Do not immerse the base in water or other liquid. Do not overfill.
  9. Humidifiers should always be unplugged and emptied when not in operation or while being cleaned. Shut off and unplug the humidifier before moving. Do not move or tilt the humidifier while it is operating. Plug and unplug the unit with dry hands.
  10. The humidifier should not be left unattended in a closed room since air could become saturated and leave condensation on walls or furniture. Leave the room door partly open. Do not aim Mist Nozzle directly at children, walls, or furniture.
  11. Caution: Do not touch the nebulizer while the unit is plugged in as burns could result.
  12. This product has a polarized plug (one blade is wider than the other) as a safety feature. This plug will fit into a polarized outlet only one way. If the plug does not fit fully into the outlet, reverse the plug. If it still does not fit, contact a qualified electrician. Do not attempt to defeat this safety feature.
  13. Caution: To avoid the risk of fire, shock, or personal injury, do not use an extension cord.


Kaz 5520B Ultrasonic Humidifer FIG-1

Using Your Ultrasonic Humidifier

First Time Use

Read all instructions before using this appliance. With proper care and maintenance, the humidifier should be able to provide 8-12 hours of operation for each tank and adequately humidifier an area the size of 150 square feet. Unpack and remove all packing material from the Water Tank and Base. Completely unravel the power cord and place the unit on a flat, stable surface. Follow the directions below to fill and operate the Humidifier.

Filling the Water Tank

Always UNPLUG the humidifier before filling.

  1. Remove the Directional Mist Nozzle from the Water Tank. Remove the Water Tank from the Base and turn it upside down. Turn the Tank Cap counterclockwise to open. Rinse and wipe clean.
  2. Fill the Water Tank with clean, cool, tap water and replace the Tank Cap by firmly turning clockwise. Turn the tank upright and check Tank Cap for leaks. If any water drips from Tank Cap, remove it and re-tighten it. The use of very cold water may temporarily reduce the mist output. Never fill the humidifier with hot or warm water as this could cause damage and void your warranty.
    If you live in an extremely hard water area you may wish to use distilled water to reduce white dust. Refer to About White Dust below.
  3. Inspect the base and Nebulizer for cleanliness. Refer to the Care and Cleaning section.
  4. Replace the Water Tank on the Base and reinstall the Mist Nozzle on the Water Tank.

Operating Instructions

  1. Do not operate the humidifier without water in the Water Tank.
  2. After filling the humidifier, be sure the Power Switch is in the OFF position, then plug the power cord into a 120-volt AC wall outlet.
  3. Turn the Switch to either the Hi or Low position. The Power Indicator will illuminate
  4. The mist will not appear immediately. Allow a few minutes for the water to fill the Reservoir.
  5. Direct Mist Nozzle away from walls and furniture. If condensation forms on walls or windows, or if indoor relative humidity exceeds 50%, turn the Switch to the low setting (on 2-speed models), open the door to the room where the humidifier is operating, or turn the unit off.
  6. If no mist is produced, unplug the cord and check the Water Sensor in the Reservoir to ensure it is in contact with the water. The water level in the Reservoir must be high enough to partially immerse the Water Sensor in order for the humidifier to work.
  7. Turn the humidifier off before removing and refilling the Water Tank. When the Tank is empty, the mist will stop although the fan will continue to operate.

About White Dust
Use of high-mineral-content water will cause a white mineral residue to accumulate on room surfaces near the humidifier. The mineral residue is commonly called “white dust”. The higher the mineral content (the harder your water is), the greater the potential for white dust. The white dust is not caused by a defect in the humidifier but is due only to minerals suspended in the water. To reduce the accumulation of white dust, use distilled water.

Care and Cleaning


Daily Maintenance:

  1. Lift the Water Tank from Base and empty all water from the Reservoir. Remove the Tank Cap and drain any water from the Water Tank. Wipe it clean with a soft, damp cloth. The Mist Nozzle should be removed during cleaning to prevent damage.
  2. Do not immerse the Base in water. Gently wipe the Reservoir with a soft, clean, wet cloth. Do not attempt to remove or in any other way modify the Water Sensor. Use care when wiping around the Water Sensor; it is delicate and can be easily damaged. Rinse the Water Tank with lukewarm water after each use. For storage, wipe dry with a soft, clean cloth. Keep water away from the Air Outlet.
  3. Do not use detergent to clean any water-containing parts of the humidifier. Detergents and the film they leave behind can affect the output of the humidifier. Do not use abrasive cleansers or brushes.
  4. Do not leave water in the Water Tank or Reservoir when the unit is not in use as it may result in the build-up of mineral deposits and bacteria that can inhibit the output efficiency of the humidifier. Please note that if water remains in the Water Tank for more than a day or two, bacterial growth is possible.

Weekly Maintenance

  1. Thoroughly clean the humidifier every week using a solution of bleach and water (one teaspoon of bleach in one gallon of water). Fill the tank partially with this solution, let stand twenty (20) minutes, shaking vigorously every few minutes, drain and rinse with clean water until the bleach smell is gone. Do not use detergents as they will interfere with the performance of the humidifier.
  2. Wipe the Reservoir with a soft cloth dampened in the solution. Rinse the area thoroughly before proceeding.
  3. If mineral deposits are evident around the Nebulizer and Water sensor, clean their surfaces with a soft, clean cloth and a small amount of undiluted white vinegar. If necessary for the removal of mineral deposits, mix a solution of 50% white vinegar and 50% water and fill the base with enough solution to cover the Nebulizer. Do not use detergents. Do not immerse the Base in water. Allow it to soak for an hour. Then use a cotton swab to gently loosen build up the Nebulizer. Rinse out the Reservoir and wipe clean. Do not touch Nebulizer with bare fingers as any fingerprints or other residue can affect mist output. Be careful not to damage the Water Sensor.
  4. All surfaces should be thoroughly cleaned with water prior to reuse. The Tank Cap can be soaked in a solution of 50% white vinegar and 50% water if necessary to remove deposits.

End-of-Season Maintenance

  1. Follow the above weekly cleaning procedure at the end of the humidification season, or when the humidifier will not be used for several days, being sure to dry all parts. Allow the Water Tank to air dry before storing. Do not store water inside.
  2. Leave Tank Cap partially loosened during storage to prevent Tank Cap and Gasket from sticking together. This will prolong the life of the gasket.
  3. Clean the Tank and Base after long periods of storage.

Troubleshooting Guide

If your Humidifier is not working properly, refer to the following: 

Kaz 5520B Ultrasonic Humidifer FIG-2

Failure to keep this unit clean from mineral deposits normally contained in any water supply will affect the efficiency of the operation of this unit. Customer failure to follow these instructions may void the warranty.


Also available is an accessory kit that allows the humidifier to be used when traveling with a common water bottle in place of the Water Tank. The kit can be ordered directly from Kaz Consumer Service:
Call toll-free 1-800-477-0457. Please have your credit card handy for payment. Kaz accepts Visa and Master Card.
Order online at www.kazstore.com.
Fax your order to Kaz Consumer Service Orders at 1-518-828-2015. Please specify your Visa or Master Card, card number, and expiration date, and sign your order.
Mail your order to Kaz Consumer Service Orders, PO Box 544, Hudson, NY 12534. Please clearly print your name, mailing address, and products ordered. Enclose check or money order (no cash, please).


This Ultrasonic Humidifier is warranted against defective material or workmanship for One Year from the date of purchase. Any defective part, including the entire appliance, will be, at the discretion of Kaz, Incorporated, repaired or replaced at no charge if the appliance has not been tampered with and has been used according to these printed directions. Retain receipt to prove warranty. This Warranty gives you specific legal rights as well as other rights that vary from state to state. If you experience unsatisfactory operation, first refer to the troubleshooting section above to ensure that it is not due to care or cleaning. Follow Care and Cleaning instructions. If you have any questions or comments, call the Kaz Consumer Service Department at (800) 477-0457 or, e-mail consumerservice@kaz.com or, write to Kaz, Humidifier Service Dept., PO Box 544, Hudson, NY 12534, explaining just how the product is operating. Specify the model number. Our Consumer Service Representative will advise you how to correct the problem yourself or will ask you to return the product for repair or replacement.

Kaz, Incorporated
One Vapor Trail Hudson, NY USA 12534 www.kaz.com

FAQS About Kaz 5520B Ultrasonic Humidifier

How durable are ultrasonic humidifiers?

Lifespan. Portable humidifiers, whether evaporative or ultrasonic, have a lifespan of two to five years with adequate care. Even humidifiers that are well-kept are susceptible to the accumulation of mineral deposits over time, which can be challenging to remove and signal the need for a new device.

How can I tell if the ultrasonic humidifier is operating properly?

In case you didn’t know, the ultrasonic humidifier releases water droplets as vapour by applying pressure to a membrane inside the tank. Don’t forget to check your humidifier and the area surrounding it to make sure the indicator light, which is frequently green, is on.

Are filters required for ultrasonic humidifiers?

The most common kind is an ultrasonic humidifier. In addition to being filter-free, this technology also appeals to many people who appreciate witnessing the “plume” of mist. We advise using demineralization cartridges with your ultrasonic humidifier in locations with hard water to remove minerals from the water and help prevent white dust on surfaces.

How frequently should an ultrasonic humidifier be cleaned?

Always drain the base and tank, then try your best to towel them dry. Then, just re-fill with fresh water when you’re ready to use it again. The humidifier should receive a thorough cleaning every three days to one week, depending on how frequently you use it.

What occurs if a humidifier with ultrasound runs out of water?

If the humidifier runs out of water, you should turn it off because humidifiers need water to operate. If you attempt to run a humidifier without water in the reservoir, the following could occur: The humidifier ought to be turned off. The auto-shutoff feature on more recent models stops them from running when the water is finished.

Are fans used by ultrasonic humidifiers?

Ultrasonic humidifiers are silent since they don’t utilise a fan. Additionally, because they lack internal filters, the water droplets they produce will contain any hard water minerals as well as other pollutants or impurities in the water.

Are ultrasonic humidifiers cleaned after use?

The majority of humidifier manufacturers advise weekly cleaning cycles. According to the Environmental Protection Agency, you should disinfect and clean a humidifier every three days. Although it may seem like a lot of work, avoiding humidifier lung is worth the effort.

Use of heat by ultrasonic humidifiers?

Unlike steam humidifiers that boil water to produce water vapour, ultrasonic humidifiers produce no heat, making them safer than steam humidifiers. This can be crucial if the humidifier is being used in a child’s room. But many evaporative humidifiers can also work without heat or boiling water.

Where should an ultrasonic humidifier be placed?

Ultrasonic humidifiers concentrate the moisture where it is most needed by producing humidity in a limited area. Any bedroom is the ideal place for ultrasonic humidifiers like the AURORA and AURORAmini. Place them close to the bed, but at least two feet away from the floor, each wall, and the ceiling.

Where should an ultrasonic humidifier be placed?

Ultrasonic humidifiers function by dispersing minute water droplets into the air. This may result in water settling and collecting over time on surfaces close to the humidifier. In order to prevent your floors from getting wet, ultrasonic humidifiers should always be positioned at least 2 feet above the ground.

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