Honeywell Humidifier HCM-310T Manual

The Honeywell HCM-310T is a cool mist humidifier designed for medium to large rooms up to 400 sq. ft. It features a 1-gallon tank capacity, adjustable humidity control, a quiet operation mode, an easy-to-clean design, a wicking filter, an automatic shut-off when empty, a refill indicator light, and a 360-degree mist nozzle. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Water Tank, Base Unit with Motor, Wicking Filter, Control Panel, 360-Degree Mist Nozzle, and Power Adapter.

Installation & Setup

Unpack and inspect all contents. Place on a stable, level, and moisture-resistant surface.

1. Remove all packaging materials from the humidifier and filter.
2. Install the wicking filter: Soak it in cool water for 15 minutes, then insert it into the filter frame in the base.
3. Fill the water tank: Remove tank from base, turn upside down, unscrew cap, fill with cool, clean water, replace cap securely.
4. Place the tank: Carefully place the filled tank back onto the base unit.
5. Plug into a standard 120V AC wall outlet.

WARNING! Place humidifier on a flat, stable surface away from direct heat sources and out of reach of children. Do not block mist outlet.

First-Time Use

After setup, power on the humidifier and adjust settings.

1. Power On: Plug in the unit. The power indicator light will illuminate.
2. Adjust Mist Output: Turn the mist control knob to desired setting (Low for quiet operation, High for maximum output).
3. Direct Mist: Adjust the 360-degree nozzle to direct mist away from walls, furniture, and electronics.
4. Monitor Humidity: Use the humidistat (if available in your model) or room comfort to adjust settings.

CAUTION! Use clean, cool water only. Do not use hot water or add essential oils, medications, or chemicals to the water tank.

Specifications

• Model: HCM-310T
• Tank Capacity: 1 Gallon (3.8 L)
• Coverage Area: Up to 400 sq. ft.
• Run Time: Up to 24 hours on low setting
• Mist Output: Adjustable, up to 1.2 gallons per day
• Noise Level: < 35 dB on quiet setting
• Filter Type: Demineralization/Wicking Filter (HFD-110 replacement)
• Power: 120V AC, 60Hz, 30W
• Dimensions (LxWxH): Approx. 11.5" x 11.5" x 15.5"
• Weight (Empty): 5.5 lbs

Controls and Operation

Control Panel located on the front of the base unit.

Controls: Power Indicator Light, Mist Control Knob (Off/Low/High), Refill Indicator Light.

Operation: Turn knob to Low or High to start. The refill light will turn on when the water level is low. The unit will automatically shut off when the tank is empty. For quiet operation, use the Low setting. Adjust the mist nozzle to direct airflow.

Maintenance & Cleaning

Regular cleaning prevents mold and mineral buildup. Unplug unit before cleaning.

1. Daily: Refill with fresh, cool water.
2. Weekly Cleaning: Empty any remaining water. Clean tank and base with a soft cloth and a mixture of mild dish soap and warm water. Rinse thoroughly.
3. Descaling (Monthly or as needed): Use a solution of 1 cup white vinegar and 1 gallon water. Let sit in base for 20 minutes, then scrub gently. Rinse multiple times until vinegar smell is gone.
4. Dry all parts completely before reassembly.

Tip: Never immerse the motorized base in water. Clean only the tank and base reservoir.

Filter Replacement

The wicking filter should be replaced every 1-2 months, or more often if using hard water or running continuously.

1. Unplug the humidifier and remove the water tank.
2. Remove the old filter from the base frame.
3. Soak the new HFD-110 filter in cool water for 15 minutes.
4. Insert the soaked filter into the frame, ensuring it is seated properly.
5. Reassemble the unit and refill with water.

WARNING! Do not operate the humidifier without a filter. Using an old or clogged filter reduces efficiency and can promote microbial growth.

Safety Features

Automatic Shut-Off: Turns off when tank is empty to protect the motor. Tip-Over Protection: Some models may include a switch that turns the unit off if tipped. Refill Indicator: Light alerts user to low water level.

Care & Storage

When not in use for extended periods:

1. Unplug the unit.
2. Empty and thoroughly clean and dry the tank and base.
3. Remove and discard the old filter.
4. Store all parts in a cool, dry place, preferably in the original box.
5. Do not store with water in the tank.

CAUTION! Never store the unit while wet, as this can lead to mold and mildew growth.

Regulatory Information

This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Copyright © Honeywell International Inc. For support, visit www.honeywellpluggedin.com or contact Honeywell Customer Care at 1-800-332-1110.

Troubleshooting

Reset: Unplug unit for 2 minutes, then plug back in.

Service: 1-800-332-1110; www.honeywellpluggedin.com