Motor started will have overloads the contactor connect es line voltage.
The coil in a "Contactor" is essentially an electromagnetic coil that provides the driving force to close the contacts in a Contactor. When the "Coil" is energized by a lower control voltage usually from some type of controller such as a PLC, the Normally-Open contactor will close or in the oposite case, the Normally-Closed contactor will open.
Contactor chatter can be caused by a broken shading ring winding on the pole face of the contactor. Low voltage to the coil can be another reason for contactor chatter. A constant hum on a contactor will be caused by misalignment to the two pole faces. Check for rust building up on the two surfaces.
The first thing that springs to mind is that the pole faces of the contactor are dirty. If the contactor is in a position where it can get weathered, it would probably be a rust built up. Dis assemble the contactor and emery cloth the pole faces until they are shiny again. A light wiping of oil will increase the time between cleanings. If the sound is more like a chatter then the shading coil on the contactor's pole face could be cracked or broken. This small copper coil is used to induce magnetism into the pole face to hold the contactor closed as the voltage transits through the zero voltage of the sine wave cycle.
A contactor is an electrically controlled switch (relay) used for switching a power circuit. an electro pneumatic contactor is similar to the above except it uses a pneumatic signal to initiate the switching of the electric power circuit. an electro magnetic contactor is a contactor driven by an electric control signal. It us usually just called a contactor.
Motor started will have overloads the contactor connect es line voltage.
A shading coil in a contactor is used to hold the AC contactor's pole faces closed during the transition of the voltage through the zero voltage phase of an electrical cycle.For an excellent description see related links below.
A definite purpose contactor is designed (and rated) for a specific load. So a lighting contactor is one example of a definite purpose contactor. A motor starter contactor is another example. So, a lighting contactor is a definite purpose contactor, but a definite purpose contactor is not necessarily a lighting contactor (it might be a motor starter, for instance).
An FVNR stands for Full Voltage Non Reversing
The coil in a "Contactor" is essentially an electromagnetic coil that provides the driving force to close the contacts in a Contactor. When the "Coil" is energized by a lower control voltage usually from some type of controller such as a PLC, the Normally-Open contactor will close or in the oposite case, the Normally-Closed contactor will open.
Contactor chatter can be caused by a broken shading ring winding on the pole face of the contactor. Low voltage to the coil can be another reason for contactor chatter. A constant hum on a contactor will be caused by misalignment to the two pole faces. Check for rust building up on the two surfaces.
low voltage from thermostat is not properly connected to contactor. transformer is bad. contactor is bad. >>>>>>>>>>>> You have an open pressure safety switch on the outdoor unit or the control wiring from indoors to outdoors is too small a gauge which will lower your control voltage at the contactor.
A contactor is a type of switch. However this switch uses electricity to power an electromagnetic coil to switch on or off power. Hence a contactor needs 2 wires - A live/hot wire and a neutral wire. Generally these are connected across the A1 and A2 terminals of the contactor.
If its just the compressor that's not starting then it could be bad contactor bad capacitor burnt or broken wire bad compressor lower than normal line voltage If you are not comfortable testing or working with electricity then don't attempt this on your own
The first thing that springs to mind is that the pole faces of the contactor are dirty. If the contactor is in a position where it can get weathered, it would probably be a rust built up. Dis assemble the contactor and emery cloth the pole faces until they are shiny again. A light wiping of oil will increase the time between cleanings. If the sound is more like a chatter then the shading coil on the contactor's pole face could be cracked or broken. This small copper coil is used to induce magnetism into the pole face to hold the contactor closed as the voltage transits through the zero voltage of the sine wave cycle.
The compressor contactor may not be sticking due to a faulty contactor coil, dirt or debris preventing proper contact, or loose electrical connections. It's important to inspect and test the contactor to determine the exact cause and replace it if necessary to ensure the proper function of the compressor.
No, a 125V magnetic switch is not recommended for use in a 12V system. The switch may not operate reliably or safely at the lower voltage, which could lead to malfunctions or damage. It's best to use a switch rated for the specific voltage of the system to ensure proper functionality.