the existence of the oils burner fire. The cad mobile set-up is composed of the actual cell, a holder, and cable for connecting the mobile to the major control. This alarm are attached in the air tube with the burner in such a way as to sight the flame.
The cad cell is made of a cadmium sulfide covered porcelain computer with a conductive grid over its area. Electrodes were attached to this exterior, while the cellular was enclosed in windows to protect it. The cad cell in dark has a very high effectiveness the circulation of electric current. But, inside existence of noticeable light, this has a really low-resistance. For a properly modified burner, during process, the cad cell opposition is around 300-1000 ohms, yet not above 1600 ohms. A resistance above 1600 ohms signals a problem that need to be remedied.
To understand just how to diagnose the cad cellular, you will need to basic know-how the control functions.
Initially, the regulation must-have a high opposition across its F-F terminals (cad mobile does not notice obvious light) before it will try to beginning the burner. In the event the cad cell sensory faculties light or perhaps is shorted, the relay for the main control wont pull-in to start out the burner. As soon as burner was running and flame is made, the cad mobile need a decreased weight (cad cell sensing flame) to help keep the principal regulation from securing from security.