Vintage soda machine refrigeration wiring

[USMCVet]

Does this look familiar to anyone ? I need to know where these wires go.These wires are coming out the side of the compressor.

[cameron.e]

hi bud is it not an internal overload

[USMCVet]

I guess that is what it is. Any ideas about the wiring ?

[Brian_UK]

There appears to be another terminal which does not have a wire on it at the moment.

It looks like the compressor main electrical motor connectors but should have three wires.

[USMCVet]

Here is a schematic. Can someone explain where these wires go according to this schematic.

[USMCVet]

Should be able to read this one.

[The Viking]

You got a Common, a start and a run terminal there (C+S+R)

First you have to find out which one is which, to do that you need to get your Ohm meeter out.

The resistance between S and R will be the total of S-C + R-C.
So if you would get 2 Ohm between pin 1 and 2, 3 Ohm between 2 and 3, 5 Ohm between 1 and 3, then 2 would be your Common or Live terminal.
Half way there....
The pin with the least resistance to pin 2 would be the start winding, feed via a start capacitor or relay (ie. pin 1 in my example).
The pin with the highest resistance to pin 2 would be the run winding connected straight to Neutral (ie. 3 in my example).

good luck,

[jack_lizhaoyang]

You got a Common, a start and a run terminal there (C+S+R)


The pin with the least resistance to pin 2 would be the start winding, feed via a start capacitor or relay (ie. pin 1 in my example).
The pin with the highest resistance to pin 2 would be the run winding connected straight to Neutral (ie. 3 in my example).

Hi Viking

I think the least resistance is the running winding and the higher one is the starting winding.
will double check on a compressor tomorrow

Regards,
Jack

[jack_lizhaoyang]

confirmed i am right

[Peter_1]

Hi Viking

I think the least resistance is the running winding and the higher one is the starting winding.
will double check on a compressor tomorrow

Regards,
Jack

This correct,start winding consists of many small wires, so big resistance. Main winding is less wires and bigger wires, so less resistance.