No...hmmm... I presume that it's not just the source heaters. And even
with the flight tube, e.g. analyzer, and valve heaters on for a few
hours, it should be fine...
Could the penning gauge need cleaning?? That does heat up, which
affects the readings. Alternatively, there's a marginal seal, valve,
flange, etc., that heating is opening up.
Have you monitored pressure over time? That should help distinguish
turbo pump overheating from changes in pressure (actual or readings).
On 1/19/2016 4:37 PM, Herbert Tobias wrote:
> Hi all,
> Just recently our 253 has vented on its own a couple times in the last
> couple days. Apart from doing a bunch of pump maintenance etc, we
> noticed that upon rebooting and opening Isodat 3.0, it now
> automatically turns on the heaters. After a few hours it presumably
> vents because pumps are too hot. Anyone else experience this?