Glossary of Terms
Axial Fan
Flow of air is parallel to shaft and perpendicular to blades.
Brush (Motors)
Part of the motor that rides on the commutator that changes (+) and (-) fields within the armature to interact with the field ring.
Can (Motors)
The steel housing that holds all the magnetic parts of the motor.
Condenser
Heat exchanger in an AC system that flows the gas refrigerant that has been heated after the evaporator back into a liquid before being compressed in the AC compressor.
“CE” Marking
Manufacturer’s self declaration that a product sold meets requirements of European Directives regarding safety, health, environment, and consumer protection.
Cubic Feet per Minute (CFM)
A measurement of airflow used for fans and blowers.
Dash Fan
A small Axial Fan mounted to a vehicle Dashboard or Ceiling. Also known as a defog or defrost fan.
Decibel (db)
Logarithmic unit to express the ratio between two values of a physical quantity. Pressure or intensity doubles with each 3 db increase. Used primarily for sound and EMI or RFI.
Direct Current (DC)
The unidirectional flow of electric charge.
Direct Current Motor (DC Motor)
Rotary electrical motors that converts direct current electrical energy into mechanical energy.
Evaporator
Heat exchanger in an AC system that flows compressed liquefied refrigerant through its core producing very cold temperatures changing the refrigerant back to gas.
Flexible Hose
Hose that can be easily bent.
Heater Core [coil]
Component of Heaters which allows Heat from water to be transferred to air by an Axial Fan or Centrifugal Blower.
Ingress Protection Rating (IP)
Rating is used to specify the environmental protection - electrical enclosure - of electrical equipment, e.g., IP68: IP = Ingress Protection, 6 = completely dust proof, and 8 = water tight to 1 meter for a period longer than 30 minutes (cold motor 1 hour submersion).
Life Test
Process of testing a product by subjecting it to conditions (stress, strain, temperatures, voltage, vibration rate, pressure etc.) to obtain the approximate wear out life.
Puller
Term used to describe airflow where air is pulled towards the motor.
Pusher
Term used to describe airflow where air is pushed away from the motor.
Resistor (Motor Speed Controller)
Electronic speed control device which drops the input voltage causing the motor to run at lower speeds. Single or a series can be used.
Static Pressure
Resistance to flow.
Thermally Protected
Unit is protected against overheating by a thermal fuse.
Voltage (V)
Unit for electrical potential - Products typically identified as 12V or 24V Direct Current (DC). Could also be 120V or 240V Alternating Current (AC).
Watts (W)
Unit for Power consumption.