Electrical System
The electrical system is powered by one 12-volt
battery mounted in the engine compartment next to
the generator. Each battery produces 12 volts DC
and maintains 1,260 cold cranking amperes (CCA).
An engine-mounted alternator with a minimum of 60
amperes charging capacity keeps the battery charged
during normal operation. The battery charge rate can
be monitored using the voltmeter on the center operator
control panel.
Electrically-heated pavers come equipped with a
generator mounted on the left side of the paver (inside
door under the hydraulic manifolds). The generator is
hydraulically-driven by a load-sense pump on the engine
pump stack. When the paver is at a preset engine
speed of 1600 RPMs and the hydraulic system is at
normal operating temperature, the generator operates
at a sufcient speed to produce 220 - 240 VAC.
All LeeBoy generators are equipped with an integrated
speed-control manifold. This manifold should not
require adjustment, but if there is a need to “ne tune”
the generator speed, there is an adjustment on the
manifold.
Generator speed tuning should only
be done by an authorized LeeBoy dealer.
Heating controls provide the necessary connection
and control of the output power from the generator
to the heating elements. It is important to maintain all
components of the heating controls system in good
working order for safe and efcient screed heating.
The heating control is mounted near the middle of the
screed and is easily accessible to the screed operator
when a heating cycle is required.
There is a ve-second delay after the heat cycle is
initiated before the actual electric load is sent to the
heating elements to allow the generator to reach optimal
operating speed before the electrical load is required.
Once the heat cycle is started, a pre-programmed timer
controls the amount of time for output power from the
generator to go through the element connection supply
plugs coming out of the bottom of the Heating Control
Box to the heating elements.
Any element lead can be plugged into any supply plug
under the heating control/distribution box. All plugs are
equally rated.
Each element is sized to t properly in your screed, and
provide sufcient power to heat your screed plate to a
temperature that mix will not drag or stick to the lower
surface of the screed plate.
To know that the element is correct, you should read a
resistance between 25 ohms and 35 ohms.
Component Location
LeeBoy 8616B Conveyor Paver3-4
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