OPERATIONAL TEST

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 As an aid adjusting the burner linkages, pilot, etc., a check-run selector is provided on each EP-Series Programmer Module. OPERATIONAL TEST CAUTION: Before testing the control operation on the boiler, close the manual main shut-off fuel valve. Failure to do this may cause injury or property damage. 1. Close the manual main shut-off fuel valve. 2. Recheck all limit circuit wiring for proper operation and correct connection. 3. Confirm that the automatic main fuel valves are wired to terminal "7." 4. Power the control and electronically check the proper sequence of operation according to the Op- eration section on page 8 of this bulletin. 5. After assuring yourself that all interlocks and valves are properly wired and that the sequence of operation is correct, open the manual main shut-off fuel valve and proceed cautiously through the boiler light off process. Check all safety interlocks for proper shut down of the boiler. When the installation and all burner adjustments are completed, the entire burner control system should be tested in accordance with the burner manufacturer’s instructions. The procedure should verify the correct operation of: 1. Each operating control (temperature, pressure, etc.). 2. Each limit switch (temperature, pressure, low water cut-off, etc.). 3. Each interlock switch (air-flow switch, high and low fuel pressure or temperature switches, purge and low fire start switches, fuel valve proof of closure interlock, etc.). 4. Pilot flame failure response and lockout. 5. Main flame failure response and lockout. 6. Tight shut-off of all fuel valves. Voltage Test CAUTION: LIVE VOLTAGE IS NECESSARY TO PERFORM THIS TEST A Voltage Check is necessary to identify a potential problem with the supply to the control. This could be caused by an improperly sized or faulty transformer, faulty load coils or low entry voltage. Follow this procedure: 1. Using the Service Adapter (60-2017), monitor the L1-L2 supply throughout a complete burner cycle. The acceptable voltage range is 102V-132V. At no time during the cycle should the voltage dip below the minimum level. 2. Check other load terminal (M/L2, 5/L2, 6/L2, 7/L2) for voltage at improper times or improper val- ues. FLAME SAFEGUARD (page 3 - 1055)

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