Component Testing Carlin Combustion Technology, Inc.
Carlin Ignitor Testing Procedure This test procedure consists of three tests. The first test should be the ignitor spark test. The second test is a secondary coil resistance test. The third test consists of an input current test. The following is a step by step procedure to perform these tests. It is important that all three of these tests be performed. 41000 Ignitor Spark Test 1. 2. 3. 4. 5. Turn off the power to the burner/appliance. Disconnect the ignitor wires in the burner junction box.
Figure 2 Figure 3 41000 Input Current Test 1. 2. 3. 4. 5. 6. 7. Turn off the power to the burner/appliance. Disconnect the ignitor wires in the burner junction box. Release the ignitor hold down screws or clips. Swing the ignitor plate fully open. Bend the copper ignitor clips or springs until the clip ends are ½” apart. Set a multimeter to read AC milliamps. Using a test power cord with a switch, wire the ignitor blue lead to one of the multimeter leads.
Oil Valves Carlin SVC-10FF Application tips 1. Carlin solenoid oil safety shut-off valves help to provide years of safe, efficient oil burner performance while adding reliability to the burner and oil delivery system. 2. Carlin’s SVC oil valves are direct-acting, two-way, normally-closed. Use on single or two-pipe oil systems to isolate the fuel pump, preventing the possibility of oil tank siphoning. 3.
Nozzle line heater Advantages Field testing Nozzle line heaters • You can check the integrity of a nozzle line heater using your Carlin multimeter. • Heating the oil reduces viscosity. • Disconnect power to the burner and appliance. Make sure the burner and all internal parts are cool to the touch. • Separate the nozzle line heater at its disconnet. • Insert the probes of your multimeter into the nozzle line heater connector sockets. • Set the meter for ohms and read the resistance.
Cad Cells Cad cell construction What does cadmium sulfide do? A cad cell contains: • Cadmium sulfide is an electrical conductor. • a sensing plate coated with cadmium sulfide. • a metal grid on the cadmium sulfide to supply the two connections from the sensor. • a clear coating over the cadmium sulfide and grid that prevents contamination from moisture, dirt and oil. • a housing to mount the sensor assembly. • When cadmium sulfide is exposed to visible light, its resistance changes.
Field testing a cad cell Check room light resistance 1. With normal room lighting, the cad cell resistance when in the open, as at right, should be less than 10 kohms. Light resistance: Cad cell resistance in room light 2. In the example shown, the resistance measured 195.1 ohms. Notice that the meter automatically adjusts the range for the best reading. In this case, the range shifted to ohms. 3. If the cad cell resistance is too high, try cleaning the cell and measure the resistance again.
Combustion air temp Air changes with temperature Recommended combustion settings based on inlet air temperature (for locations operating with outside air temperature between -20°F and +90°F) As air temperature changes, so does the CO2 and O2 • Once an oil burner is setup, the fan always pulls through about the same volume of air (cfm) regardless of air temperature.
Combustion Air Temperature Chart
Thermistor Resistance – EZ-Temp Sensors Carlin U – Residential Oil Burners – Page 130
Thermistor Resistance – EZ-Temp Sensors Carlin U – Residential Oil Burners – Page 131
