What causes a fan motor to over amp?

Overamping occurs when the amperage drawn by the fan motor exceeds the fan motor nameplate amperage. In other words, more horsepower is required than the recommended maximum for the motor.

How do you check the amp draw on a condenser fan motor?





Quote from the video:
Quote from Youtube video: So what you want to do is you'll want to take your amp clamp. And you'll want to use your multimeter to check for amperage to see if you do have power going to your compressor.

What is voltage for condenser fan motor?

Specifications

Additional Information Motor Type PSC; Bearing Type Ball; Diameter 5-1/2 Inch; Shaft Size 1/2 Inch Diameter x 6.5 Inch Length; Lead Length 36 Inch; Temperature Rating 60 Deg C
Speed Rating 1075 RPM
Voltage Rating 208 to 230 Volt AC 1-Phase

Does the HP matter on a condenser fan motor?

Although it is not too difficult to change a condenser fan motor, it is still possible to do it incorrectly. Of course you need a motor that operates at the same voltage, phase, and frequency of the original motor and it should also be the same horsepower.

What causes amperage to increase?

In a circuit, cutting the resistance by half and leaving the voltage unchanged will double the amperage across the circuit. If the circuit’s resistance remains unchanged, the amperage in a circuit can be increased by increasing the voltage.

How do you lower the amps on a motor?





According to Ohms Law (I=E/R or Amps=Volts/Ohms) if the voltage in the circuit remains constant and the resistance is increased, the current should decrease. Try adding resistance to the circuit to lower the current output.

How do I know if my condenser fan motor is bad?

5 Signs Your AC Fan Motor Is Bad

  1. The cooling fans won’t turn on.
  2. The fan turns on when the AC is running, but the blades rotate slowly.
  3. You can hear a rattling noise coming from the condenser unit.
  4. It smells like something’s burning.
  5. Blown fuse.


When replacing a fan motor in an HVAC condenser What else should you replace?

Every time you replace a condenser fan motor, you should also replace the A.C.’s run capacitor, which is a cylinder-shaped device that helps to start or run motors. To replace it, again take down all technical data on the unit, and note wiring colors and positions before removing it with a screw driver.

Can you use any condenser fan motor?



Quote from the video:
Quote from Youtube video: And the motor will need to be replaced. Condenser fan motors are usually unique to each central air condensing unit.

What happens if AMP is too high?

As long as the correct voltage is used, a device will draw only the amperage it needs, meaning there will not be “too many amps”. If an incorrect voltage is used — say a higher voltage than the device is rated to accept — then yes, too many amps may be drawn and the device can be damaged.

Why does an electric motor draw more current?

As more mechanical load is applied, the motor slows, the back emf decreases, and more current is drawn. If sufficient mechanical load is applied, the motor stalls/stops rotating, and therefore there is no back EMF at all, and the current is limited by the supply or by the resistance of the windings.

What causes amperage to fluctuate?



Natural Causes



One of the most common causes of voltage fluctuation is an obstruction in the transmission lines. Obstructions are mostly caused by natural factors such as thunder, lightning, fallen trees and heavy rains. In the case of lightning and thunder, complete power shutdown can be observed.

What are some harmful types of AC power fluctuations?

The following types of AC power fluctuations can cause data loss or hardware failure:

  • Blackout: Complete loss of AC power. …
  • Brownout: Reduced voltage level of AC power that lasts for a period of time. …
  • Noise: Interference from generators and lightning.

How do you stop current fluctuations?

Quote from the video:
Quote from Youtube video: Problems power guard is the power adapter which saves your electronic devices 24/7 against high voltage low voltage surges.

How do you reduce power fluctuations?

Yet another way to reduce the amplitude of voltage fluctuations is to reduce the changes of reactive power in the supply system. You can do this by installing dynamic voltage stabilizers. Their effectiveness depends mainly on their rated power and speed of reaction.

How do you protect AC from voltage fluctuations?



The stabilizer has a low and high cut that prevents extreme voltage fluctuations from reaching your AC. This stabilizer gets optimum voltage delivered to your AC by performing at a wide input range. Its Intelli Auto Start feature automatically steps up and down so that the output voltage matches the input voltage.

What happens if the voltage is too high?

Voltage that is too high can cause premature failure of electrical and electronic components (e.g. circuit boards) due to overheating. The damage caused by overheating is cumulative and irreversible.