((It doesn't understand what a fire detection system is. There really aren't such things in this world.))
((Seriously?? Mechs they have, but they can't figure out pieces of metal and glass?))
((O_o I thought fire detectors worked on the principle of CO2 detection, and are rather advanced >.>
What's this 'metal and glass' you talk of?)
((Depends on your era, modern times uses the advanced version, electricity and isotopes, but fire detectors (not smoke detectors) have been around for a really long time.
The simplest variation is made entirely of metal and wax. A spring with a piece of metal on the end is embedded in a wax block, as long as the wax stays solid, the spring can't move. If, however, the wax is heated, then the spring will punch through. This can then trigger a valve to open, an alarm to ring, or variety of other simple mechanical alarm trips. This particular version is older than dirt owing to the simplicity of the mechanism.
Another, much more precise variation (the one I would have expected the facility to be equipped with) involves glass of differing heat sensitivity. (A specialty alloy can also be used.) The mechanism consists of a seal over a pressurized pipe, with the majority of the seal being made by a glass (or alloy) bulb. When heated to a certain predefined temperature, the bulb will crack and explode, (modern variations use fluid filled glass, faster detonations with less risk of failure) thus opening the seal. A secondary alarm system can be rigged into the pipe using a float, arranged so that if the water level drops rapidly an alarm spring will be tripped.
Of course, this is all real world stuff. If these things do not exist in your world, then I will of course abide.))
))