Copeland Scrolls going to earth

[Latte]

Evening all,

Dont have specifics so bare with me but has anyone else had problems with NEW copeland scrolls going to earth. One of my collegues has fitted 2 in the last week and both have gone down, going straight to earth after a couple of days. System has all the usual protection devises, pressure switches, overloads, timers set a 2 mins, system clean so genuinely think its a fault with the compressors.

Anyone else had a problem.

Regards

Fatboy

Update:- The engineer has just texted me, the compressor is a ZS56K4E

[multisync]

Have they got phase rotation devices?

Multisync
London

[Latte]

Not as far as i am aware, although i am going to site on monday with another compressor to have a look.
From what i am being told and from memory when i last went there for another job its a fairly basic condensing unit feeding 2 remote multidecks that are individually conttrolled hence the timer. What is youre thinking, they are running the wrong way or phase device running it the wrong way

Regards

Fatboy

[powell]

rdocwra,

Here's a link to Copelands AE bulletins. Check out Section 4, bulletin 4-1299. There's good information here that might help you out.


http://www.hvacrinfo.com/ae_index.htm

[nike123]

Hi, Rdocwra

Does these compressors are part of newly installed system, or they are installed after original compressors are burned-out?

[Nik BG]

Hi, Rdocwra
I guess this compressor works on 380V! One reason this problem could appear is working long time on low voltage. That happened to me couple of times. Normaly on the machines i install a phase control/low voltage device to protect compressors

[Tiesse]

Regarding the going the wrong way idea, you would know if they were as they don't pump correctly & they make a terrible 'bag of bolts' type of noise!

Trust me, once heard, never forgotten!

[jure]

Did anyone check the amps after the change out