While pressing the upper part of the water tank handle, lift it obliquely upward, and remove the water tank by supporting it in the bottom.
Hold the water tray.
Press the center pin of the tank cap, and check that it comes back by spring.
Tighten the tank cap firmly, wipe off spilt water, and check that there is no water leakage.
Wipe off water on the water tank handle if any.
The tank cap is a consumable part. 
The humidifying filter absorbs water supplied from the water tank for humidifying operation.
Be sure to handle the 
Press in the tank securely until it clicks. Inadequate setting may cause the water tank to fall or result in water leakage.
Do not set the water tank without having the water tray in place. Otherwise, the water tank may tip over.
When you pull out the water tray, be careful not to scratch the floor with bottom of the tray. 
Do not leave the detached water tank with its cap closed.
Install the purifier on a level, stable and sturdy surface.
Avoid any place close to cooling or heating appliance, and select a 
Keep the purifier at least 90 cm away from the walls in both sides. Otherwise, discharged air will mix with surrounding air and the walls may become dirty.
hitachi air purifier with humidifying function specifications
The Hitachi Air Purifier with Humidifying Function represents a cutting-edge solution designed to enhance indoor air quality while also ensuring optimal humidity levels. This versatile appliance is particularly suitable for households and environments where air dryness can lead to discomfort or respiratory issues.One of the main features of this Hitachi air purifier is its dual functionality. It effectively purifies the air while simultaneously adding moisture, creating a comfortable and healthy atmosphere. This is especially beneficial in dry climates or during winter months when humidity levels tend to drop.
The Hitachi air purifier employs advanced filtration technology, including a HEPA filter that captures up to 99.97% of airborne particles as small as 0.3 microns. This ensures that allergens such as pollen, dust, smoke, and pet dander are efficiently removed, contributing to cleaner and fresher air. Additionally, the activated carbon filter helps eliminate unpleasant odors, providing a more pleasant indoor environment.
Another notable technology integrated into this model is the proprietary humidifying system. It utilizes an innovative evaporation technology that hydrates the air without causing it to feel damp or sticky. This is important for maintaining comfort while preventing the growth of mold and bacteria that thrive in overly humid conditions.
The Hitachi air purifier also features smart sensor technology, which continuously monitors air quality and adjusts the operation modes accordingly. This ensures maximum efficiency and convenience, as the unit operates automatically based on the conditions in the room. Furthermore, the air purifier is equipped with a quiet mode, ideal for nighttime use, ensuring that it does not disturb sleep while still maintaining air purification and humidity levels.
Another key characteristic of the Hitachi air purifier is its user-friendly interface. The intuitive controls allow users to easily adjust settings, monitor humidity levels, and check filter status. With multiple fan speeds and humidification levels available, users can customize the performance to suit their specific needs.
With its sleek design and compact size, the Hitachi air purifier seamlessly fits into various home or office environments. Overall, this appliance not only aids in maintaining a healthy indoor atmosphere but also enhances overall comfort, making it an indispensable addition to any space.