HUM-42 - Humidifier Orava - Free user manual and instructions
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| Type | Ultrasonic room humidifier |
| Brand | Orava |
| Model | HUM-42 |
| Water tank capacity | 4.2 liters |
| Power supply | 220-240 V ~ 50 Hz |
| Power consumption | 25 W |
| Humidification capacity | Approximately 250 ml per hour |
| Recommended room area | Up to 25 m² |
| Dimensions (W × D × H) | 190 × 190 × 350 mm |
| Weight | 1.3 kg |
| Noise level | Less than 35 dB |
| Water level indicator | Yes |
| Adjustable mist output | Yes, selectable continuous or intermittent |
| Auto shut-off | When water tank is empty |
| LED indicator | Power and water level warning light |
| Operating principle | High-frequency ultrasound vibration |
| Cleaning requirements | Weekly descaling of tank and transducer |
| Filter type | None, direct water atomization |
| Maintenance | Wipe exterior with soft damp cloth, never immerse unit |
| Safety feature | Automatic power-off without water |
| Spare parts and repairability | Ultrasonic transducer and water tank available through authorized service center |
Frequently Asked Questions - HUM-42 Orava
How often should I clean the Orava HUM-42 humidifier?
Clean the water tank and ultrasonic transducer at least once a week to prevent scale buildup and maintain efficient operation.
Can I use tap water in the humidifier?
It is recommended to use distilled water or demineralized water to reduce mineral deposits. Tap water may contain impurities that cause white dust on furniture.
Why is there no mist coming out of the humidifier?
Check that the water tank is properly filled, the power cord is connected, and the mist output control is set to a higher level. If still no mist, clean the transducer and inspect the water level indicator.
Is it safe to leave the HUM-42 running overnight?
Yes, the humidifier has an auto shut-off function that turns the unit off when the water tank is empty, making it safe for overnight use. Always place it on a stable, flat surface.
What is the difference between continuous and intermittent mist modes?
In continuous mode the humidifier produces a steady mist flow. In intermittent mode the mist output cycles on and off, which helps maintain humidity with lower power consumption.
How do I descale the water tank?
Mix a solution of white vinegar and water in the tank, let it sit for 30 minutes, then rinse thoroughly with clean water. Do not use abrasive cleaners or sharp tools.
What does the indicator light mean?
The green indicator shows the unit is powered on. The red indicator warns that the water level is too low or the tank is empty, prompting a refill or auto shut-off.
Can I add essential oils to this humidifier?
No, adding essential oils to the water tank can damage the plastic components and affect the ultrasonic transducer. Use only pure water.
Where should I place the humidifier for best results?
Place the unit on a flat, waterproof surface at least 30 cm away from walls, furniture, and electronic devices. Allow direct airflow and keep it away from heat sources.
How do I store the humidifier when not in use?
Empty the water tank, dry all parts thoroughly, and keep the unit in a cool, dry place. Avoid leaving water inside to prevent bacteria growth or corrosion.
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USER MANUAL HUM-42 Orava
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Product information
Brand : Orava
Model : HUM-42
Category : Humidifier