Motors

Front

What happens if a compressor draws the full LRA amps but does not start?

Back

The start components are not the problem; the compressor is probably mechanically locked up.

Front

What provides additional torque on startup for a capacitor start motor?

Back

The poly phase shift in the start winding caused by the capacitor in the circuit.

Front

What is the state of current relay contacts?

Back

Normally open.

Front

What type of capacitor does a permanent split capacitor motor have?

Back

Only a single capacitor.

Front

What should happen to the start winding of a capacitor start motor during operation?

Back

It should be in the circuit only until the motor reaches speed then removed.

Front

What is LRA in the context of motors?

Back

LRA stands for Locked Rotor Amps, which is the current drawn by the motor when the rotor is not moving.

Front

What is the function of a start capacitor in a motor?

Back

To provide an initial boost of energy to start the motor.

Front

What is the difference between a start capacitor and a run capacitor?

Back

A start capacitor is used only during startup, while a run capacitor remains in the circuit during operation.

Front

What does a double throw relay do?

Back

It can connect to two different circuits, allowing for switching between them.

Front

What is the purpose of a current relay in a motor circuit?

Back

To control the operation of the motor based on the current flowing through it.