I have side wall exterior heads on a public commercial building, what is the rule for corrosion? cleaning or replacement?
to my knowledge they are original and the building is over 20 yr's old.
If a dry barrel sprinkler, has to be tested every ten years,
Other than that, if wet, or other just a visual, tell it hits test time.
Does it look like it will work
Well, it's hard to see, all of the heads have the green corrosion on them and it is a wet sys.
You cannot clean them. if they are bad they have to be replaced.
I take it you are connected with the building??
What does your fire sprinkler company say??
If the actual fuse mechanisms will work and let water come out, the frame or deflector in a way does not matter
Okay, I will check on that.
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