Jetlitho
Mechanical
- Apr 5, 2006
- 2
I have a motor on a fan, specifically a Reliance P56H1426 1/2 HP that feeds combustion air to a burner. The fan curve shows that the fan should never load the motor more than about .40 HP and yet the motor is running at 1.2 amps when it is nameplated at .96. This rating is on 460V 3Phase service, and my customer actually has 480V 3 Phase service. I know of common problems that can cause this, like low voltage, overloading, incorrect rotaion, etc... We have ruled these out, so does anyone have any idea what would cause this? I would normally call it a faulty motor, but there are four of these on an over and they are all doing the same thing.
