Carbon brush with shunt
Carbon brush with shunt for R200 vacuum cleaner and central vacuum systems
A carbon brush with shunt is a component used in certain electrical machines, particularly direct current (DC) electric motors.
The carbon brush with shunt is an essential part of the current collector system in these motors.
What is it used for?
1. Current collector: In a DC motor, the current collector is a rotating part that is in electrical contact with the carbon brushes. When the motor is running, the current collector ensures the transmission of electrical current between the power source (usually a battery or DC power source) and the motor coils.
2. Speed control: Shunt brushes are used to adjust the rotational speed of a DC motor. By adjusting the pressure of the carbon brushes against the commutator, the electrical resistance in the circuit can be changed, which influences the speed of the motor. The greater the pressure of the brushes, the lower the resistance and the higher the speed of the motor.
3. Current regulation: The shunt is a parallel resistor in the motor circuit. It regulates the current flowing through the motor coils. By adjusting the value of this resistor, the amount of current flowing through the motor can be controlled, which can be useful for preventing overload or adapting the motor to specific requirements.
A carbon brush with shunt in an electric machine, particularly a DC motor, allows the speed, electrical resistance and current flowing through the motor to be controlled, which is essential for the proper functioning of these machines in various applications.
When should this part be replaced?
The carbon brush with shunt in a professional vacuum cleaner needs to be replaced in several specific situations.
It should be replaced when it becomes too short, particularly if it is less than one centimetre long. Excessive wear means that the carbon brush can no longer perform its function properly.
Certain visual signs may also be warning signs. A blackened, deformed, poorly secured, too small or unevenly sized carbon brush indicates that it needs to be replaced. These physical abnormalities are often a sign of advanced deterioration.
Symptoms related to the operation of the appliance should also be cause for concern. A loss of suction power may be related to the condition of the carbon brushes. Unusual noises, often caused by poor contact between worn carbon brushes and the collector, or the presence of sparks or a burning smell coming from the motor, are also telltale signs.
It is also advisable to carry out regular checks as part of preventive maintenance. In standard use, an inspection every five years is generally sufficient. However, for vacuum cleaners that are used intensively, it is best to check the carbon brushes for wear every six months.
Replacing the carbon brushes as soon as they show signs of weakness will preserve the motor and ensure that the vacuum cleaner continues to work properly in the long term.
Non-contractual photo 📷
Please note that the photos of the parts are not to scale.
