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UNIT OPERATION
Burner and Blower Assembly

TM-5-3895-374-24-1 Paving Machine Bituminous Material: Crawler Mounted Diesel Engine Driven Manual
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TM 5-3895-374-24-1 3-2-12 Timers The asphalt mixing plant has a number of timers that may be altered to suit specific operating conditions These timers are preset at the time of manufacture of the plant. The preset times are very good approximations of the time intervals required for the proper operation of the particular control function. It Is recommended that they be changed only by an individual fully trained and experienced in the operation of the Asphalt Mixing Plant. CAUTION Significant  changes  to  the  times  entered  when  manufactured  may  cause  the  plant  to  malfunction  and could result in damage to equipment or possibly result in personnel injury. Make gradual changes carefully observing the results in the plant operation. If satisfactory results are not obtained contact the manufacturer. The timers are changed by accessing the programmable logic controller through the data table access module (DTAM) mounted Inside the door of the cabinet below the feeder panel. 1. Turn the control panel power on by turning the key switch to the ON position 2. Open the door to the cabinet below the feeder panel The DTAM is mounted on the inside of the door 3. Adjust the times by pressing the (F) key and the corresponding timer number. The digital display will read "N:#" and the value of the Timer Preset (as preset 4. Enter the required new Timer Preset value on the keypad and press ENTER key. The new timer value will be displayed The following chart indicates the timer number, the function controlled and the factory preset time, F(O) N7:0 Baghouse cleaning, delay to stop 300 seconds F(1) N7:1 Batcher gate close time 30 seconds F(2) N7:2 Batcher gate open time 5 seconds F(3) N7 3 Plant start up horn warning time 5 seconds F(4) N7 4 Delay time to stop hot mix conveyor 30 seconds F(5) N7.5 Time to close exhaust damper after purge 5 seconds F(6) N7-6 Time delay to stop drum on surge bin high level signal 30 seconds F(7) N7-7 Run time for bin vibrators 10 seconds page 3-493







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