Latte
23-03-2006, 08:17 PM
Hi Guys,
I have spent the last two days in London looking at a Trane RTAD125 Water cooling system.
For those who dont know this unit, It has two independant systems going into one evaperator tank.
The customer believes that since it was installed in 2000 system/compressor two has never worked !!!!!!!
Now, The compressor has six points on it fed by two lots of three phase.
Contactor one pulls in and power the three points one side, the contactor has an aux on it which goes up to a 30ms timer and then should bring in another contactor to supply power to the 3 points the other side of the pot. Now the problem is that before the second contactor comes in the first one goes back out again.
I have changed over the aux's and the timers from system 1 to 2 but still the same.
No wiring diagram on site but i am assuming if there was a problem with the compressor it would blow the trips as opposed to releasing the contactor.
Has anyone had any experience of these units or any ideas.
Regards
Fatboy
I have spent the last two days in London looking at a Trane RTAD125 Water cooling system.
For those who dont know this unit, It has two independant systems going into one evaperator tank.
The customer believes that since it was installed in 2000 system/compressor two has never worked !!!!!!!
Now, The compressor has six points on it fed by two lots of three phase.
Contactor one pulls in and power the three points one side, the contactor has an aux on it which goes up to a 30ms timer and then should bring in another contactor to supply power to the 3 points the other side of the pot. Now the problem is that before the second contactor comes in the first one goes back out again.
I have changed over the aux's and the timers from system 1 to 2 but still the same.
No wiring diagram on site but i am assuming if there was a problem with the compressor it would blow the trips as opposed to releasing the contactor.
Has anyone had any experience of these units or any ideas.
Regards
Fatboy