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Author Topic: Direct test THE COMPRESSOR  (Read 419 times)

Offline dab147315

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Direct test THE COMPRESSOR
« on: January 27, 2013, 11:52:17 AM »
Here is a direct test kit to use on a compressor without relay.Part#Ma-69523 that i found in a new parts book from Tribles Parts and if you google part it comes up on other sites.

Offline RegUS_PatOff

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Re: Direct test THE COMPRESSOR
« Reply #1 on: January 27, 2013, 12:27:08 PM »
 
OR make your own
 
« Last Edit: January 27, 2013, 12:28:36 PM by RegUS_PatOff »
After leaving this Earth, "Do you want the smoking or non-smoking section?"

Offline dentdaddy

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Re: Direct test THE COMPRESSOR
« Reply #2 on: January 27, 2013, 12:35:15 PM »
OR just wire a power cord up to a hard starter and voila
Good work isn't cheap. Cheap work isn't good.
SW Oklahoma

Offline dab147315

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Re: Direct test THE COMPRESSOR
« Reply #3 on: January 27, 2013, 01:36:17 PM »
Look like the same.

Offline dab147315

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Re: Direct test THE COMPRESSOR
« Reply #4 on: January 28, 2013, 04:45:32 PM »
Better picture .

Offline go400

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Re: Direct test THE COMPRESSOR
« Reply #5 on: April 18, 2013, 06:04:00 AM »
Personally, I use an RO41 universal start device to test a compressor for three reasons.
 1) Is a more accurate test as it uses a 5 ohm start ptc. A direct wire test may start the compressor, but it may not start with the 5 ohm
 start device
 2) I have recently found some compressors where the compressor start pin was on the bottom, right, not the standard bottom left. In some cases,
 a totally destroyed start device gave no confirmation the start pin was on the left, or right. Also, some compressors had identical start and run winding
 resistance which doesn't help.
  3) Hard wiring of the start winding by mistake will cause winding burnout within seconds! Even the use of a klixon overload may not protect the compressor as it
  might not limit the current fast enough.

Offline go400

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Re: Direct test THE COMPRESSOR
« Reply #6 on: April 18, 2013, 08:11:56 AM »
For Info on this, you can go to my article, web site www.replacing compressor start devices

Offline andersenappliance

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Re: Direct test THE COMPRESSOR
« Reply #7 on: April 18, 2013, 02:54:07 PM »
Bad Link   :(

Offline go400

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Re: Direct test THE COMPRESSOR
« Reply #8 on: April 19, 2013, 03:16:43 AM »
Sorry, I will get my wife to paste it over today This might work www.Replacingcompressorstartdevices.com

Offline go400

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Re: Direct test THE COMPRESSOR
« Reply #9 on: April 19, 2013, 03:45:30 AM »
This works www.replacing compressor start devices.com or do a Google search, published 3- 9- 2008 in appliancepartspros
 This article assumes an R134A domestic, fractional hp compressor.

 Generally, testing with a portable scope displays a saturated core reactance of about +J2 ohms, combined, locked rotor vector sum impedance of about 5 ohms
 Live wire current around 20 amps, power dissipation around 1 kwatt. Winding fusing within about 1- 2 second but never verified.
 With the use of a 5 ohm ptc device, current limited to about 10 amp for aprox, 100 - 200 msec. That is a typical start scenario that compressors
 can handle.
  The danger of a hard wired test device is if the compressor fails to start, and the start current repeated over a sufficiently short interval will result in winding
 burnout. In cases where the compressor starts, there is a risk the windings can get damaged. Probably academic as the compressor is probably bad mechanically or with damaged windings, but still embarrassing.

 

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