What is the purpose of a timer wired into the compressor contactor control circuit on a refrigeration system?
A defrost control typically.
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Answer . it is the switch turns the compressor on and off if you look in your unit follow the power wires from disconnect the should go straight to the contactor
A three pole contactor is wired with the line voltage connected to the top terminals L1,L2,L3 and the load connected to the bottom terminals T1,T2 and T3.
It is relatively easy to wire a single phase contactor that is controlled by a pir in a lighting circuit. Take the two wires for the line that is to be interrupted or connecte…d and attach them to the two power contacts. If this is too complex please get some help from an electrician as working with electricity can be very dangerous.
In an air to air system the compressor contactor controls the operation of the compressor motor and the?
Ask your teacher. This is a no brainer...
Mechanical control system for an compressor?
This depends on the circuit. A resistor may be connected in series with a capacitor and will control the rate at which the capacitor charges or discharges (known as an RC timi…ng circuit); at a certain voltage (0.6 Volts) this may turn on part of another circuit through a transistor.
An electrically held contactor will require two wires to control it.
The wire in a circuit acts like pipes directing water from one location to another. Wires carry the current.
If the contactor is held in mechanically there would be no coil used to hold the contactor in, therefore no wires to operate no coil.
No wires are needed to control a mechanically held contactor. An electrically held contactor will require two wires to control it.
Control means, a timer cant control is speed directly, it can control its operation. A times will have NO nd NC contacts. Connect the motor in series with the timer contacts w…rt desired operation
A contactor is wired with the line voltage connected to the top terminals and the load connected to the bottom terminals. A second circuit is used to energize the contactor co…il to draw the contactor's contacts together to complete the circuit to the load.
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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/ho…t wire and a neutral wire. Generally these are connected across the A1 and A2 terminals of the contactor.