RTTA135 Blew compressor terminals

[gasnowman]

I was asked to look at this chiller and give our recommended steps to get this machine back on line. The customer advises me Ckt A has had this happen twice and Ckt B has done this once before. He also explains history with coils being dirty and relief valves leaking. So with these things in mine does anyone have any input with experience to root cause the compressor terminals blowing and gas leaking out? They are R series screws doing comfort cooling at a plant. Trane has compressor terminal repair parts in stock... Thanks in advance

[FREDIEFREON]

Gasnowman: more info please, m/n # s/n # did they burn arc etc, FRED

[gasnowman]

I am not for sure Fred. I was just asked to price a repair job for this ongoing related problem as described. It was described as a burn't compressor terminals and wiring leads. I was given this information over the phone and asked to quote so i did today. I have alot of educated theorys but just curious if any body else had any experience with this problem. I'll update if i get the job. Thanks ga.snowman

[FREDIEFREON]

Ga Snowman I seem to remember that there was a SB about terminals shorting, remidy was to coat terms with a liquid elect tape type product.. got it from Trane parts. moisture, dust caused arcing FRED

[drivewizard]

You would be wise to put eyes on the comp terminals. You may have to crimp on new studs. Not impossible, but a little time consuming and will need a special crimp tool.

[jayguy]

Ga Snowman I seem to remember that there was a SB about terminals shorting, remidy was to coat terms with a liquid elect tape type product.. got it from Trane parts. moisture, dust caused arcing FRED

RTAA-SVB17B-EN..."Dirty or corroded Compressor motor terminals may lead to false indications of a grounded compressor and/or a flashover of voltage from terminal to ground."

[FREDIEFREON]

Ga Snowman, see JayGuy's post that is the sb you need to look at...Way to go JayGuy....FRED

[jayguy]

...Way to go JayGuy....FRED

way to go you! i forgot all about that bulletin.

[FREDIEFREON]

JayGuy..Some times it's scary, so much floating around in my head. And then a dong goes off. .....FRED

[gasnowman]

Many thanks gentlemen... We were awarded this project and with your advise. We should be able to execute like a walk thru the park. Again many thanks....