Kelly, it's been a long while since I repaired a BRAVO. The machine was a little unique as far as Electrovert ovens go. I am pretty sure that it is the only Speedline model that integrated a PLC. Loved the OMNI's, not so much with the Bravos.
I am going by memory here so forgive me if I am little off with my facts. I don't have a manual with me, but I think there are two Watlows for the thermal runaway circuit? I also believe there are some LED's on each device that indicate the faulty input? The thermal runaway circuit is an additional sub system of a reflow oven that has nothing to do with normal operation or process. It is made up of an additional set of thermocouples or thermistors to detect a zone thermal runaway. A fault condition will turn off the reflow oven so it doesn't catch on fire.
Send me an email and let me know where you're located and I if I am traveling anywhere close maybe I could arrange to stop in and take a look.
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