Motion sensor hand dryers use infrared technology to trigger the activation of air used. As hands are placed under the sensor, the dry cycle is initiated and will shut off once the dry cycle has expired or when hands are removed away from the sensor.
How do hand dryer sensors work?
Much like the technology used in an automatic door, motion-sensors are an essential part of how hand dryers work. ... Emitting an invisible ray of infrared light, the sensor on a hand dryer is triggered when an object (in this case, your hands) moves into its path, bouncing the light back into the sensor.
Which motor is used in hand dryer?
Universal Brushed Motors
What is a hand dryer called?
Hands-In Hand Dryers are as the name suggests. You place your hands inside the hand dryer to dry your hands. The first of this type was the Mitsubishi Jet Towel, developed in 1992. The most popular is the Dyson Airblade, launched in 2007.
Why is my hand dryer not working?
If your dryer won't operate despite being connected to the mains, it may be that the sensor is faulty. First, wipe down the sensor and ensure that it is not covered with dust or dirt. If this doesn't solve the problem, you may need to purchase a new sensor.
How do you service a hand dryer?
- Turn off all power to the dryer.
- Remove the cover.
- Using a small brush or vacuum, carefully clean out the build-up of dust and lint.
- Check the length of the motor brushes. If less than ½” (12.7mm), replace. ...
- Clean controller lens.
- Replace cover.
- Turn power back on.
- Test operation of unit.