AC fan speed control
Has anyone modified their fan speed on their roof top ac? Mine blows so hard even on low speed. Our TT is only 19' and the air force is way too much. I am wondering if I could adapt a variable speed c...
Forum Discussion
You need to find out if the motor is AC or DC driven.... most likely AC (cheaper drive method). IF its AC, then the speed control isn't an "easy fix" as the "duty cycle" of the AC has to be "altered" NOT the voltage level. For a DC motor, a rheostat or equivalent could be used.
http://www.ebay.ca/itm/Solid-State-AC-speed-Control-for-Blower-motors-/141226907354?pt=LH_DefaultDomain_0&hash=item20e1c796da
This is an example of an AC blower control (used in things like stove fan hoods). The important value besides the voltage is the amperage rating. This one is only rated for 2.5 amps. Not sure what your AC fan is rated for but probably 3-5 amps.
http://www.ebay.ca/itm/AC-Motor-Fan-Speed-Control-KB-Electronics-KBWC-15K-Kit-120VAC-5-Amps-/380893767245?pt=US_Lighting_Parts_and_Accessories&hash=item58af09a64d
This one has a higher rating.
Note: I have only used the "first link" to replace a speed control in my house stove fan but I think the "technique" is the same.
http://www.ebay.ca/itm/Solid-State-AC-speed-Control-for-Blower-motors-/141226907354?pt=LH_DefaultDomain_0&hash=item20e1c796da
This is an example of an AC blower control (used in things like stove fan hoods). The important value besides the voltage is the amperage rating. This one is only rated for 2.5 amps. Not sure what your AC fan is rated for but probably 3-5 amps.
http://www.ebay.ca/itm/AC-Motor-Fan-Speed-Control-KB-Electronics-KBWC-15K-Kit-120VAC-5-Amps-/380893767245?pt=US_Lighting_Parts_and_Accessories&hash=item58af09a64d
This one has a higher rating.
Note: I have only used the "first link" to replace a speed control in my house stove fan but I think the "technique" is the same.
