TM 5-3895-373-201.12.7. ScreedBurnerSystem. A screed burnersystem is located in each of the main and extensionscreeds. The burner systems are used to heat screedplates to approximately the same temperature as thepaving material. Heating the screed plates prevents hotaggregate mixtures from cooling and sticking to thebottom of the screed. The left burner systems arecontrolled from the left screed control panel. The rightburner systems are controlled from the right screedcontrol panel. The main screed burner systemcomponents are as follows:a.Screed Burner Chambers. Separate burnerchambers are located on the left and right sides of themain screed and on the left and right extension screeds.A fuel spray nozzle and forced air duct are located on theinput side of the burner chamber. When burner fuel flowis turned on, the spray nozzle atomizes the incoming fueland the fuel is ignited by a 12 VDC glow plug. In normaluse, fuel combustion continues until the fuel flow is shutoff.b.Screed Burner Blowers. The burner blowersconsist of a fan rotor mounted on the shaft of a 12 VDCmotor. The blowers force combustion air into the burnerchambers for increased combustion efficiency. Theblower motors are controlled from both left and rightscreed control panels.c.Manual Fuel Shutoff Valves. Manual fuel shutoffvalves are used to turn fuel flow on and off to the burnerchambers. The paving machine is equipped with foursolenoid controlled valves controlling fuel flow to eachscreed burner. The +12 VDC solenoid valves areactivated by switches on the screed control panels.The manual fuel shutoff valve provides a backup shutoffcapability in case of solenoid valve failure.1-12
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