Installation of Fire Protection Systems
A sprinkler's glass bulb has lost its liquid but is not visibly cracked. What does the manufacturer say?
- ADo not install it, since liquid loss is a defectCorrect
- BInstall it, but in light hazard areas
- CInstall it, since an intact-looking bulb is acceptable
- DInstall it once the bulb has been dried off
Why: The manufacturer says not to install a bulb-type sprinkler if the bulb is cracked or has lost liquid, and a small air bubble should be present when it is held horizontally. Installing it in light hazard areas only does not change that, because hazard class has no bearing on the defect. An intact-looking bulb is not enough when liquid is gone. Drying the bulb does not restore lost liquid.Manufacturer data sheet (Tyco TFP690)