LARGE CAPACITY FIELD HEATER
CARBON MONOXIDE DETECTOR OPERATOR CONTROL BOX
Heater shut down until instructed
There are two carbon monoxide (CO) detectors used in the LCFH. One is located in the
operator control box while the second is located inside the LCFH cabinet underneath the
fan compartment cover. Only the detector in the operator control box can be inspected
and tested at the operator level.
1. Unscrew the small thumb screw (1) on the cover (2) protecting the CO detector (3).
2. Open the cover (2) and inspect the carbon monoxide detector (3) for dents, punctures, or any other
damage that would prevent the detector from operating properly. If damaged, refer the entire operator
control box to unit maintenance for carbon monoxide detector replacement.