Brahma Photocell FC7/A 18210018

Brahma FC7/A photocell flame sensor with a 635 mm cable, designed for flame detection in luminous flames. It operates by light detection and requires direct line-of-sight to the flame. This model is identified by article numbers 18210018, 4031.018, and 246.901.016. It is compatible with Master 4031.018, Master BV680, Master MAX15TC, and Master MAX20TL air heaters.

When selecting a replacement photocell of this type, ensure the detection principle (light detection), cable length, connector type, and mounting dimensions match the original component. The sensor must be positioned with a clear line-of-sight to the flame, typically in a viewing tube or sleeve. Verify the mounting arrangement and spectral response to match the burner control.

Common failure modes include a contaminated optical window, an aged cell producing a weakened signal, or a damaged cable or sheath. Symptoms may include the burner failing to start or shutting down during operation due to lack of flame confirmation. Check the optical window for dirt or damage, and test the sensor's output signal.