Question about Ice-O-Matic ICEU220HA Undercounter Ice Machine

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Whole house attic fan

My 30" whole house attic fan won't start. When you flip the switch on, the motor buzzes, if you spin the blades manually the motor runs. Do I need to replace the starter capacitor or the motor?
Thank you,

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A simple capacitor tester will tell if the capacitor is bad. turn off power, label wires and where they go and test cap after discharging it . to discharge simply connect the terminals together once its been removed( you can use an insulated screwdriver to connect them and discharge any stored voltage) and then touch meter leads to each set of terminals and read the microfared output. the setting on the meter is usually labeled uf. or you can take it to the electric motor shop and let them test it. it has a rating value labeled on the side. usually it has to be within 10 percent of the rated value or its bad . if the cap checks good then the start winding in the motor is probably bad or weak, then a new motor is called for, it is usually not worth the time wait and trouble of getting it rewound etc. take the old motor out and label and measure exactly how and where it was mounted. label and make diagrams. saves a lot of time reassembling exact as it came out. turn off the power , check it with a meter to be sure , short it with a screwdriver to be sure the meter works ,and then treat it as if it was still hot as much as possible when you work on it.

Posted on Oct 09, 2008

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Capacitor

[from an engineer]

Posted on Sep 29, 2008

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1 Answer

We have recently purchased an older home, built in 1931. There is a whole house fan in the attic that we would like to get working again. We do not know when the fan was installed or who made it - however,...


What and interesting situation. I have seen installations like what you describe, but not in a residential application. Industrial applications that had very high ceilings and in very old apartment buildings, But not in single family resident. I suspect, that the previous owners "acquired" it through unusual circumstances.

In any event, 1/3 horsepower electric motor is not that hard to find. The real key is getting the right rotation, so the blades will pull the air up and out instead of in and down. Remounting a new motor coupled with the right pulley size for a fan belt ,can control the speed of the fan. Rarely are hold house fans direct drive. Which may be the case with yours, I don't know.

As far as a new 1/3 Hp motor is concerned, I would recommend Grainger Industrial Supply
http://www.grainger.com/Grainger/wwg/start.shtml. They have locations throughout the country and their staff is knowledgeable. They can probably help you with designing a belt & pulley system, to control the speed, if necessary. Keep in mind, 2-speed motors are also available.

Redesigned properly, you can do away with that horrendous shaft.

Hope this helps steer you in the right direction. If nothing else, food for thought.

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