mountainken
New Member
I have a new Microwave that has a three speed exhaust fan with a three stage motor. I have installed a 6 inch
diameter CFM exhaust fan in my attic to keep the noise down at the stove and to exhaust the cooking fumes to the outside of my house. I have removed
the fan motor from the microwave and sealed up the chambers to only exhaust up the top of the unit. Now
I have the wiring diagram and color codes for the motor and have the factory male/female plug ready to hook up to
the new attic exhaust motor. The old motor has four control wires from
the on-board control panel in the Microwave to the motor,plus two wires to the starting capacitor. There are
three wires to control the voltage to three different winding locations on the motor (high,medium,low) plus a
white nutrual. My question is can I take these three wires that have different voltages (starting at 120v.ac) and
install three in-line diodes to protect the control panel from any reversed voltage, and then connect them to a single input at the
motor's connection box? If so what size, make and type of diode should I be looking for and where can I order them? The motor
in the attic is of the type to have a variable voltage controller. I am hoping to be able to use the Microwave's
control panel so I don't have to try and hide a switch under the upper cabinet and end up with a single speed fan! Thank you for any help you
can give me on this. Ken
Frigidaire
mod.# FPMV189KFC
CFM In-line duct fan
0.78 Amps
89 Watts
diameter CFM exhaust fan in my attic to keep the noise down at the stove and to exhaust the cooking fumes to the outside of my house. I have removed
the fan motor from the microwave and sealed up the chambers to only exhaust up the top of the unit. Now
I have the wiring diagram and color codes for the motor and have the factory male/female plug ready to hook up to
the new attic exhaust motor. The old motor has four control wires from
the on-board control panel in the Microwave to the motor,plus two wires to the starting capacitor. There are
three wires to control the voltage to three different winding locations on the motor (high,medium,low) plus a
white nutrual. My question is can I take these three wires that have different voltages (starting at 120v.ac) and
install three in-line diodes to protect the control panel from any reversed voltage, and then connect them to a single input at the
motor's connection box? If so what size, make and type of diode should I be looking for and where can I order them? The motor
in the attic is of the type to have a variable voltage controller. I am hoping to be able to use the Microwave's
control panel so I don't have to try and hide a switch under the upper cabinet and end up with a single speed fan! Thank you for any help you
can give me on this. Ken
Frigidaire
mod.# FPMV189KFC
CFM In-line duct fan
0.78 Amps
89 Watts