LeeBoy 8510b - Electric Heating Controls Operation

6-12 LeeBoy Model 8510B Conveyor Paver
Operation
Electric Heating Controls
LeeBoy Model Legend Electric Screed System is very
easy to operate, and requires very little maintenance.
The system consists of a hydraulically driven generator
mounted in the paver, which feeds power to a
distribution/control box mounted on the screed. This
box is mounted near the middle of the screed and is
easily accessible to the screed operator when a heating
cycle is required.
The control box is where you will select the heating
function before you begin to pave (Figure 6-8).
The control box has a power switch (Figure 6-8,1), a
START HEAT button (Figure 6-8,2), and a heat cycle
indicator light (Figure 6-8,3). Under normal operation,
the operator will ip the power switch up to the POWER
position, and depress the START HEAT button. During
normal usage, there are no other controls for operating
the heat system.
To operate the screed heating system:
1. Start the paver and bring the engine to normal
operating temperature as outlined in the paver
manual.
2. Set the throttle on the paver to normal operating
speed (approximately 1750 to 2000 rpm).
NOTE: Throttle positions of one half to less than full will
still produce screed heat, but at a reduced rate
and temperature. Do not run paver at less than
half throttle while using electric screed heat.
3. Flip the power switch (Figure 6-8,1) to the ON
position.
Electric Heat Control Box
Figure 6-8
1 - Power Switch
2 - Start Heat Button
3 - Heat On Indicator Light
4. Press the START HEAT (Figure 6-8,2) button.
NOTE: There is a ve second delay after the heat cycle
is initiated before the actual electric load is sent
to the heating elements from the generator. This
delay is to allow the generator to reach optimal
operating speed before the electrical load is
required.
5. The heating cycle will begin, and the HEAT ON
(Figure 6-8,3) light will illuminate.
NOTE: The HEAT ON light (Figure 6-8,3) will stay on
as long as the elements are heating the screed
plates. Once the heating cycle is complete, the
HEAT ON light will go out.
6. If the heat cycle has completed and the screed
plates still require a higher temperature, restart
the system by pressing the START HEAT (Figure
6-8,2) button again. The system will run for the set
time once more.
NOTE: If the heat system is running, and the operator
presses the START HEAT (Figure 6-8,2) button
during a heating cycle, the heat will continue to
operate normally, and the time cycle will re-set
to beginning of the cycle. This will not hurt the
system, and may be useful on cooler days to
make the screed heat system run longer than
normal without stopping.
Once the heating function has been enabled, the
distribution/control box will apply electrical power to the
heating elements and the heating cycle will begin. The
heating cycle is timed to optimize the heat generated at
the screed plates.
NOTE: The factory time setting for the heating cycle
is 30 minutes. This will be sufcient in most
circumstances to generate enough heat to
begin the paving process without screed heat
problems.
NOTE: The temperature that the screed plates reach
will depend in part on the outside ambient
temperature.
To help the screed heating system operate most
efciently:
• Ensure that engine RPM is at normal operating speed
(approximately 1750 to 2000 rpm).
• Raise screed plate approximately 1 to 2 inches off the
ground when just heating screed at start of project.
• Do not raise screed fully, allowing more wind under
the screed plate while heating.
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