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FUEL SELECTOR SWITCH (COMBINATION UNITS ONLY)
TEMPERATURE CONTROLLER - TM-5-3895-374-24-2_309

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 TEMPERATURE CONTROLLER This  unit  is  located  on  the  stack  side  of  the  panel  box.    It  controls  the  temperature  of  the  heat transfer fluid being circulated through the heater.  The controller will not call for heat unless the heat transfer oil temperature drops 20F below the set point.  The burner will modulate to its high fire   position   when   the   set   point   selected   is   more   than   15°F   above   the   heat   transfer   oil temperature.  The modulation range (low fire high fire) is set at the factory to be 25F to minimize cycling.    SECTION  6:    HEATER  COMPONENTS  has   a   more   complete   discussion   of   the temperature controller. During  normal  operation  the  temperature  controller  remains  in  its  "OPERATOR"  mode.    To change the hot oil temperature set point the up and down arrow keys are used.  If either one of these keys is held down for more than two (2) seconds, the set point will be changed.  The longer one of the keys is held down the faster the set point is changed.  The up arrow key increases the set point and the down arrow decreases the set point. (page 3 - 942)







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