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HOLD MESSAGES (CONTINUED)
DIAGNOSTIC MESSAGES (CONTINUED)

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 EP ADDITIONAL MESSAGES LOCKOUT MESSAGES (CONT) DESCRIPTION The control has held for more than 10 minutes waiting for the low fire switch (M-D) to make This  message  appears  because  of  ignition  cable  noise  Reroute  scanner wires away from high voltage ignition cables.  Check for proper  spark  gap. Check for proper grounding of wiring base and power supply.  Replace worn ignition cable and/or faulty connections. The   control   has   sensed   an   excessive   current   of   short   circuit   eternal   to terminal 5, 6 or 7. The control will lockout when this event is sensed twice in a row. DESCRIPTIONS The  "Run-Check"  switch  has  been  placed  in  the  "Check"  position  during purge and will hold indefinitely.  The firing rate motor is driven to the hi purge position. The  "Run-Check"  switch  has  been  placed  in  the  "Check"  position  during purge  and  will  hold  indefinitely.    The  firing  rate  motor  is  driven  to  the  low firing rate position. The "Run-Check" switch has been placed in the "Check" position during the normal fire position and will hold indefinitely as long as flame is sensed.  The flame  signal  strength  will  be  displayed.    The  control  will  lockout  on  safety only  if  no  flame  signal  is  sensed  for  a  continuous  30  seconds  while  the control  is  in  this  check  position.    The  control  will  not  advance  in  the  cycle until the switch is placed in the "run" position again.  The firing rate motor is driven to the low firing rate position. The "Run-Check" switch has been placed in the "Check" position during the pilot  trial  for  ignition  period  and  will  hold  indefinitely  as  long  as  flame  is sensed.  The flame signal strength will be displayed.  The control will lockout on safety only if no flame signal is sensed for a continuous 30 seconds while the control is in this check position.  The control will not advance in the cycle until the switch is placed in the "run" position again.  The firing rate motor is driven to the low firing rate position. POSSIBLE CAUSE SOLUTION -High Electrical Noise -Check for proper ground on power supply -Install noise suppressor on power supply -Defective Field Wiring -Make sure line phase on interlock circuits is the same as found on L1/L2 power supply to E100 -Defective Scanner -Replace I.R.  cell -Defective Amplifier -Replace Amplifier -Voltage On Terminal 7 at -Check wiring to terminal 7 improper time Defective field wiring. -Defective Chassis -Replace Chassis (EB700) -Defective Programmer -Replace Programmer Note:  Messages  more  than  eight  characters  in  length  will  scroll  from  right  to  left  on  the  display continuously. page 3 - 1073







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