10
OPERATOR WARNINGS
(CONTINUED)
Oil Jacketed Tack Tank and/or Hopper
DANGER: THE FACTORY SETTING HIGH TEMPERATURE LIMIT ON THE OIL
CONTROLLER OF AN OIL-JACKETED HOPPER OR TACK TANK IS SET FOR A
MAXIMUM TEMPERATURE OF 275F-290F. NEVER REPROGRAM THIS HIGH
TEMPERATURE LIMIT WITHOUT INSTRUCTION FROM FALCON OR THE OIL MAY
OVERHEAT AND IGNITE CAUSING SERIOUS INJURY OR DEATH.
WARNING: NEVER OVERFILL THE OIL LEVEL IN THE OIL JACKET OF THE HOPPER
OR TACK TANK. CHECK OIL LEVEL BEFORE EACH USE WHEN OIL IS COLD AND
NEVER FILL BEYOND THE FILL LINE IDENTIFIED ON THE DIP STICK.
WARNING: ALWAYS CHECK HEAT TRANSFER OIL LEVEL WHEN EQUIPMENT IS
LEVEL TO AVOID OVERFILLING.
OIL-JACKETED HOPPER HEATING DESIGN
A thermocouple in the oil measures/regulates the oil temperature and a thermocouple in the
material measures/regulates the asphalt material temperature. Each thermocouple is connected to
a separate digital temperature controller but one toggle switch regulates both controllers. The
material temperature controller is set up as a slave to the oil temperature controller. When the
toggle switch is flipped up, both temperature controller displays illuminate. Instructions to set the
temperature can be found on page 32.
When the system determines a need for heat the diesel burner ignites. A "call for heat" can be
issued by either temperature controller when the actual temperature is less than the
set/programmed controller temperature unless the oil temperature is already at its set/programmed
temperature. The reason for this design is to prevent the burner from igniting if the oil is already at
the set temperature. When either the oil set temperature is reached or the material set
temperature is reached, the burner will stop running. A 10-degree temperature drop of either the
oil or hopper contents will result in a "call for heat" which results in the diesel burner igniting.
The factory setting for the oil temperature high limit is between 275F and 290F.
The high limit
should never be altered without consultation with the manufacturer.
The ideal material
temperature setting is determined by the asphalt material manufacturer/supplier or established by
street crew experience.
