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D2-A16
Nov 20, 2016 0:58:06 GMT
Post by elec573 on Nov 20, 2016 0:58:06 GMT
Picked this one up off crags list last spring It was close to home and got it for 50$. After I got it home and let it sit a day I put power to it relay hummed for a few seconds and then I think it trips the Over loads . It's a D-2-A16 Also one of the coils is partly crushed and top is on backwards! This is the way I picked it up! Ok I'm looking for if this one can be saved ? Don't know if motor is locked up and if coil is too crushed to work anyway!! Would appreciate any help! Will try and post pictures!
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D2-A16
Nov 20, 2016 1:12:27 GMT
Post by elec573 on Nov 20, 2016 1:12:27 GMT
Pictures of D-2-A16
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D2-A16
Nov 20, 2016 1:30:18 GMT
Post by elec573 on Nov 20, 2016 1:30:18 GMT
D-2-A16 Attachments:
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D2-A16
Nov 20, 2016 1:37:56 GMT
Post by elec573 on Nov 20, 2016 1:37:56 GMT
Redundant pictures
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D2-A16
Nov 20, 2016 4:20:23 GMT
Post by coldspaces on Nov 20, 2016 4:20:23 GMT
From what I can see in the pics the tube is still open enough to work. You could have a control problem,bad connection under control, locked up compressor or windings damaged.
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D2-A16
Nov 20, 2016 7:04:25 GMT
Post by elec573 on Nov 20, 2016 7:04:25 GMT
Not sure what you mean by tube ! The moter does nothing net even a hum if it was locked up I would expect a hum or something but it's dead quiet ! Thanks for the reply!
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Post by coldspaces on Nov 20, 2016 13:21:03 GMT
Not sure what you mean by tube ! The moter does nothing net even a hum if it was locked up I would expect a hum or something but it's dead quiet ! Thanks for the reply! By tube I mean the tubing that is crushed. Your first post said it hums and the trips overload so not sure how that translates to "motor does nothing". The motor would have to be doing something to draw enough power to trip the overload.
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D2-A16
Nov 20, 2016 14:15:01 GMT
via mobile
Post by ckfan on Nov 20, 2016 14:15:01 GMT
Yep, I agree with Gill. I guess you should make sure that both contacts are in good shape before moving further. That way you can write those off as not being the offending part of the electrical party.
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D2-A16
Nov 21, 2016 0:26:35 GMT
Post by elec573 on Nov 21, 2016 0:26:35 GMT
Ok I'll have to check the contacts out! By the moter doing nothing I mean there's no hum or noise or vibrateion . From my past experience with moters that are locked up they usually hum for a short while until the over loads trip! You can tell they are trying to start but can't. I hear a hum from relay for a couple of seconds before it trips . Not having the experience with these moters is that the way they act ? I'm guessing but I think somewhere in it's past this dr was moved and they did not realize the top just sits there not bolted down. So when it was laid over the top came off crushed the tube and top was put on backwards! Thanks for information will post after checking contacts!
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D2-A16
Nov 21, 2016 2:39:14 GMT
via mobile
Post by ckfan on Nov 21, 2016 2:39:14 GMT
If you don't see anything wrong with the contacts I would try to apply power to the compressor manually. We can discuss that after you try other options though.
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D2-A16
Nov 21, 2016 3:40:27 GMT
Post by coldspaces on Nov 21, 2016 3:40:27 GMT
Might just be that these low HP units don't hum as loud as you are used to? If the overload is indeed tripping it must be drawing power through one or both windings.
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D2-A16
Nov 21, 2016 18:55:02 GMT
via mobile
Post by Travis on Nov 21, 2016 18:55:02 GMT
The run winding is fairly quiet. If the start winding is energized the start coil will sound like an engraver tool and buzz.
You either have a bad motor or a bad contact. The bad contact could be underneath the control on the short controls. I would carefully remove the control and check resistance on the motor windings. Then I would try to start the machine directly without the control.
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D2-A16
Nov 22, 2016 2:21:58 GMT
Post by elec573 on Nov 22, 2016 2:21:58 GMT
Ok I took the cover off the control box and with power disconnect turned switch on and off to see if contacts open and closed. They seamed to work fine. So pluged it in and watched contacts as I turned it on . They made and broke just fine with a little ark when I opened them . So after a couple of times doing this I left it on and very shortly the overload tripped. These are the contacts down under neath. No growl and just a faint hum before it tripped. So unplug and that's where I left it. Hope that helps.
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D2-A16
Nov 22, 2016 2:53:44 GMT
Post by Travis on Nov 22, 2016 2:53:44 GMT
Loosen the bellow tube from the evaporator and remove the four screws that hold the control to the machine deck. If you raise the control, you will find copper spring tabs that must make good contact to the control itself. You could have corrosion or you may have a loose wire going to the spring tabs. The slight hum is the run winding. You should hear the start coil it it was working.
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D2-A16
Nov 22, 2016 14:16:17 GMT
Post by ckfan on Nov 22, 2016 14:16:17 GMT
Well, looks like you confirmed that the main contacts are working. What Travis said is right, sometimes the bottom contacts that mate up with the bakelite base plate can get corroded. They did on my DR1, not enough to make it stop working but enough to make me want to shine them up.
You might also want to make sure that the start contact is making connection when you first turn the unit on. If the start contact is not making a good connection that is your problem.
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