OI 4560 Trap faulting

Discussions about GC-MS, LC-MS, LC-FTIR, and other "coupled" analytical techniques.

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Hi All,

I’m having an issue with an old OI 4560 concentrator. The Trap is not heating properly. It will heat to about 100 and then shut off. It has happened before, at the time I swapped out the water management unit and it worked. This time I tried that as well as changing the trap, insulators, nuts, and the water assay line. At one point it said the actual temp was -42. Can't seem to get a handle on it, i also changed the fuse for the trap (although it looked fine).

Thanks!
I've had that problem with my 4660. If you have a short to ground from any of the parts along the trap/water management path it will not be able to read the trap temperature properly. Check for problems at the bulkhead fittings too.
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