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D2-A16
Dec 14, 2016 3:48:07 GMT
Post by elec573 on Dec 14, 2016 3:48:07 GMT
Yes I do have an amp prob could take a reading real easy . Don't have any capacitors . Also have a dr2-f that runs fine could I use the control from it ? Or are they incompatible don't want to screw up that controll. As far as a capacitor what size would I need and how do I hook it up ?
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D2-A16
Dec 14, 2016 4:04:55 GMT
Post by cablehack on Dec 14, 2016 4:04:55 GMT
I don't see why you couldn't use the control from another DR1 or 2 as a temporary substitute. For testing the motor with a capacitor, at a guess it would need to be 20 to 40 microfarads, and be rated for motor start use. Connect the mains supply to the common and run terminals on the motor, and temporarily connect the capacitor between the run and start terminals. Plug into the mains and the motor should come up to speed within a couple of seconds. Immediately it has reached full speed, disconnect the capacitor. If this all goes to plan, it would indicate the motor is OK. Keep an eye on the current from the mains supply because when operating like this there is no overload protection. Do not leave it connected to the mains for more than a few seconds if it does not start.
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D2-A16
Dec 14, 2016 5:12:43 GMT
via mobile
Post by Travis on Dec 14, 2016 5:12:43 GMT
Don't remove the control from your working unit to try and save this. You'll end up with a broken bellows.
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D2-A16
Dec 14, 2016 22:52:43 GMT
Post by elec573 on Dec 14, 2016 22:52:43 GMT
Ok guys thanks for your help agree with you Travis don' t want to mess with my other dr control ! When I picked this ck up the top was on backwards and their was duct tape on the top seal ( saw this after pulling top ) so somebody was working on this unit before. So I was checking all connection to control . And if I am reading this right they had start and run wires reversed ! According to page 41 of the dr manual I down loaded and printed from this site . But wanted make sure I was looking at this right ! By what I am seeing on page 42 / feg 92 we are looking from top down or from bottom up ? By my understanding it's from like your standing and looking directly down ! But wanted to confirm with you ! If so the wires are on backwards !
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D2-A16
Dec 14, 2016 23:02:56 GMT
Post by Travis on Dec 14, 2016 23:02:56 GMT
Hi everyone hope your thanksgiving was good! Ok isolated the moter wires ! com to start. 7.9 ohms com to run. 3.3 ohms start to run. 5.5 ohms Herb, The above is what you posted. I think your labeling in wrong. The 7.9 ohm number is likely run to start the 5.5 ohm number is likely start to common the 3.3 ohm number is run to common (as you stated) The picture of the spring terminals are marked as they would appear looking down on them.
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D2-A16
Dec 15, 2016 2:39:12 GMT
Post by elec573 on Dec 15, 2016 2:39:12 GMT
Agree with you Travis but if you go by diagram that means they had the run and start wires reversed on the control terminals . Did not catch this until today just assumed they were right when I rehooked every thing back up ! Took new readings today !
c to start 3.8 c to run. 7.9 start to run. 7.8
start to ground 7.2 run to ground. 10.8 common to gr. 8.2.
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D2-A16
Dec 15, 2016 2:54:22 GMT
Post by Travis on Dec 15, 2016 2:54:22 GMT
Your reading are much different than they were before. I wonder what changed?
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D2-A16
Dec 15, 2016 3:24:20 GMT
Post by elec573 on Dec 15, 2016 3:24:20 GMT
The start and run wires were on the wrong terminals if you go by diagram on page 41 if you go by dr manual . So that means the run was hooked up where the start should have been! Don't know what that would have done to motor ? Also checked start resistor 31.4 ohms
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D2-A16
Dec 15, 2016 3:38:20 GMT
Post by Travis on Dec 15, 2016 3:38:20 GMT
Regardless of which wire was on what terminal, your readings have changed significantly since you measured them the first time. We'll have to wait until Gill posts on this. I would check again, lord knows what it's doing since it's well grounded.
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D2-A16
Dec 15, 2016 5:10:13 GMT
Post by coldspaces on Dec 15, 2016 5:10:13 GMT
If it was indeed hooked up backwards the start winding probably is the one that is bad. Can't leave it in the circuit all the time. I am not sure about the readings changing that much are you sure you didn't have start and run backwards during one test compared to the other? The readings are almost the same but reversed.
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D2-A16
Dec 15, 2016 22:14:37 GMT
Post by elec573 on Dec 15, 2016 22:14:37 GMT
That's what had me puzzled the reading just swapped checked them twice but we'll check them again just to be sure ! If your standing in front of machine the start winding on bottom of moter is on your left the way I'm understanding it ! Wanted to confirm before I tried power it up .
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D2-A16
Dec 15, 2016 22:31:47 GMT
via mobile
Post by Travis on Dec 15, 2016 22:31:47 GMT
I don't know which terminal on the compressor case is which. The manual doesn't cover that. You were supposed to look at the wiring color to determine that.
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D2-A16
Dec 16, 2016 5:23:16 GMT
Post by elec573 on Dec 16, 2016 5:23:16 GMT
Well when I disconnect the control was very careful to mark the wires and the base of control so there was no question !!! If you look in previous post you we'll see colored tape did not want to mix anything up ! But could not see then where ever one went on bottom of motor . So now have ever thing open and can see the run and start were reversed on controll ! But would like coldspaces or cablehack to verify I am seeing this right ! And all the wires were the same black with a cloth covering . The way I'm unsteading this picture is its from in front of machine looking toward back ? By way of heater whitch is in front .
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D2-A16
Dec 16, 2016 5:38:06 GMT
Post by coldspaces on Dec 16, 2016 5:38:06 GMT
The prongs for the plug are clearly at the back of the control in the pic from the manual you posted so yes you are looking from front to back.
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D2-A16
Dec 16, 2016 6:24:23 GMT
Post by elec573 on Dec 16, 2016 6:24:23 GMT
Thanks coldspeces do you have any idea what this would have done to the motor having the start and run reversed on the control? My guess it would have burned out some of the windings ! Because the run and start were reversed the run windings would have Ben hooked up to the start ! So are not able to handle the start up current and burn out ?? Or just sit there and fry ?
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