10
Heating
The advantage of infrared heat is its
ability to penetrate below the surface to
heat at depth without overheating the
surface. To do this effectively, begin
heating by walking VERY SLOWLY
forward (about 10-20 feet per minute).
After one “stroke”, rock the machine
back and return quickly to the start line
and repeat, walking a little faster each
time (as the surface will reach
maximum temperature more quickly)
until the asphalt reaches the desired
depth of heat. (Note: when heating, the
handle height has be optimized for
pushing, not pulling the machine; it is
also easier to maintain a straight line by
pushing the machine.)
Monitor the surface temperature with an
IR thermometer. Try to bring the
surface temperature up as high as
possible with each stroke without
exceeding the maximum allowable
temperature of the material you are
heating and causing it to burn.
To ensure that you have heated
adequately along the entire length, start
and end each stroke at least ½ the
bank width at the start and end of the
desired heating area.
Operating Procedure – Cont’d
Extend Stroke
at least ½ bank
width beyond
desired heating
area
Start Stroke at
least ½ bank
width before
desired heating
area
Desired Heat Area
Optimum heating length is
about 6-12 feet (2-4
meters); if the heat length
is less than 6 feet (2
meters) close the shut-off
valve to the nearest
heater to prevent
overheating the surface
