Wiring on a compressor???

[knownotin]

After many months of contemplating, i have decided to enter into the world of extreme cooling. I've decide to build myself a decent waterchiller, so i've gone out and bought myself a brand new compressor, the only problem is that it comes with no wiring instructions on the copressor :confused: it's got a connector for positive and negative and ground, but its also got 2 or 3 other conectors as well, i know that these are probably for a thermostat. What i need to find out is if i need to bridge these other connectors to get the compressor to run or can i leave them un-connected?

Thanks :thup:

[matttheniceguy]

There should be a wiring diagram on the compressor somewhere. Could you post a picture of that, or at least tell us what model the compressor is.

Thanks.

[knownotin]

The only wiring diagram is the one on the plastic cover that covers the wiring but it's extremely vague. I'm at work at the mo so i can't remember off hand what compressor name is, but i will post pics tomorrow.

[Myhre]

I've decide to build myself a decent waterchiller, so i've gone out and bought myself a brand new compressor, the only problem is that it comes with no wiring instructions on the copressor.

What type of compressor is it? High/Mid/Low? R12/404A/134A? What size compressor? Semi Hermetic? What else are you using in the system? Are you going to use a TEV or Cap? What type of evap/HX are you thinking about using?

[Zork]

Are you sure the compressor came with all the required start/run components, such as overload, run cap, start cap if needed and relay?

[knownotin]

ok, well iv'e been trying and trying, but i can't seem to get these friggin pics on here :bang head

What type of compressor is it? High/Mid/Low? R12/404A/134A? What size compressor? Semi Hermetic? What else are you using in the system? Are you going to use a TEV or Cap? What type of evap/HX are you thinking about using?
I'm not sure how to answer all your questions but i can answer some of dem, it's a 134a 1hp compressor. I'm going to use a capillary tube, and i'm gonna make my own evaporator out of 1/4" copper piping coiled up.


what model the compressor is.
It's a aspera NB1118Z compressor.


Are you sure the compressor came with all the required start/run components, such as overload, run cap, start cap if needed and relay?

I'm not quite sure i understand what all those things are, but yes, i think it did.

[Myhre]

ok, well iv'e been trying and trying, but i can't seem to get these friggin pics on here :bang head


I'm not sure how to answer all your questions but i can answer some of dem, it's a 134a 1hp compressor. I'm going to use a capillary tube, and i'm gonna make my own evaporator out of 1/4" copper piping coiled up.



It's a aspera NB1118Z compressor.




I'm not quite sure i understand what all those things are, but yes, i think it did.

1HP?? Where did you just pick up a 1hp compressor from and not know if it had a start cap, run cap. Hell a compressor that big should even have a compressor pressure switch. All of my 1HP+ compressors are 208, but I guess there may be 110 ones. Your going to use 1/4inch copper for an evap on a 1hp compressor? You need to do some research before doing this. Is the compressor all sweat or does it have a service valve?

I just ran that model and that is a 1/4 semi hermetic compressor. Even though I would recommend using 5/16 or even 3/8 on the evap depending on how long your making it. The wiring on that compressor should have a thermal overload protection cap as well as a small start/run cap all mounted directly inside the electric box on the side of the compressor. They should push on to 3 prongs coming out of the compressor. It should be fairly easy to wire up, you will probably have 3 screws that you can mount wires too, 4 if there is a ground coming right off the compressor. Just mess around with it and see what works. I could tell you exactly how to wire it if you could get a pic.


-Myhre

[knownotin]

South Africa my good man, thats where you get a compressor without knowing if it's got a start cap/run cap :) i would post the pics if i knew how, i click on insert image icon and it gives me http://.... what am i supposed to do with that, i cant copy-paste or anything.

[matttheniceguy]

Below the window where you type the text in, there is an "attach Files" box, where you can upload pictures and stuff. Just stick a picture on using that.

As for your giant compressor, I'm pretty sure you are going to want to use a real condensor on something that big.

[Myhre]

You can also use www.cryo-laboratory.com/upload for pic hosting.