Alto-Shaam Combi 20-20 Gas

[ectofix]

I have no Alto-Shaams, but about twenty-six Rationals.  I’ve dealt with broken glass several times.  Always a full-size floor model like yours.  Almost ALL occasions was from having a mis-matched trolley crammed into the wrong oven (we once had numerous different sized ovens in one kitchen).  The one other occasion?  Nobody had an explanation (of course).

 

I don’t think they’ll break from overheating since there’s a cabinet high-limit to prevent those ovens from heating above 650°.  I’m not absolutely certain, but I believe the glass is good to over 1000°.

The high-limit is designed to be fail-safe, which means that if DOES fail, its contacts open.  Therefore the oven is disabled when that happens. 

By virtue of their design and application, that’s REALLY the only direction a high-limit will fail.  I have NEVER heard of a high-limit sticking closed.