6-46 Rosco Maximizer 2B Asphalt Distributor
Operation
In the event that manual operation is required, follow the
instructions provided in this section.
Asphalt application rates are dependent upon nozzle
size, pump speed, ground speed and spraybar
width. Carefully review and follow the procedures for
calculating the required settings, simulating a run and
doing a trial run to be sure the desired application rate is
obtained.
Calculations
To obtain the desired performance, use the Slide Rule
Application Guide (Leeboy #36941) (Figure 6-38),
supplied with the Maximizer, to determine the settings of
the machine.
Determine the type of nozzles used on the spraybar. The
nozzle type will determine the range of pump ow that
will give an acceptable nozzle spray pattern.
Determine the application rate in Gal/Sq. Yd. or Liter/Sq.
Meter for the work to be done. This will be specied by
the job requirements and selected nozzle size.
Determine the ground speed, pump ow and the
spraybar width being used for each specic job.
The slide rule covers spraybar widths from 4 feet to 24
feet in 1 foot increments.
The following example demonstrates the use of the
Slide Rule Application Guide.
NOTE: In this example, we are using a 12-foot spraybar.
Use your correct spraybar length and make
appropriate adjustments to the calculations.
1. Go to the top scale for the Bar Length. Move the
inner sleeve to the desired application rate with the
correct bar length.
For Example:
Spraybar Length = 12 Feet (3.66 meter)
Application Rate = .3 Gal/Sq.Yd. (1.135 Lit/sq.m)
NOTE: For No. 1 Nozzles the recommended pump rate is
8 -14 GPM (30.3 - 53.0 LPM) per feet bar length.
For 12 Ft bar, pump rate is 96 (12 x 8) to 168 (12
x 14) or approximately 100 - 170 GPM (378.5 -
643.5 LPM).
2. Go to the center scale (Pump Rate) and bracket the
pump rate from the above example 100 - 170 GPM
(378.5 - 643.5 LPM).
3. Look directly below the pump rate scale at the truck
Washdown
It is extremely important that the components, lights,
reectors and safety decals on the Maximizer 2B are
kept clean and visible.
Rosco recommends the use of biodegradable cleaning
solvents (Figure 6-29).
Fire Hazard! Never spray cleaning
solvent or release agent near a heating element or
near any open ame or source of ignition. Do not
operate Burner System during cleaning! Cleaning
solvent and release agent could ignite causing
serious personal injury.
When using washhdown, consider the
environment and do not allow cleaning solvent to run
onto the ground.
Combating Poor Visibility
Increasingly, asphalt maintenance equipment is being
used during less than ideal light conditions, such as fog,
smog and at night. Using the equipment during these
conditions presents safety hazards to the workers,
bystanders and passing trafc. People can be injured
or killed by the equipment, passing trafc or distractions
caused by road work.
If you will be operating the machine
under less than ideal light conditions, the unit should
be equipped with special lighting. Such lighting
will help prevent serious personal injury, as well as
damage to machine and property.
To help combat these hazards, the equipment must
be equipped with front and rear lighting options, back
up lights and shielded rotating beacons. The shielding
protects the operator’s vision and prevents eye strain.
Use reective tape on the sides of all machines that may
be used at night.
Be sure that all personnel wear reective vests. Use
impact barriers (movable or stationary) to protect the
workers from trafc and help direct the trafc ow away
from road hazards.
Manual Operation
The Maximizer 2B comes equipped with the Plus One
Controller that will automatically set and maintain the
operator’s required application rate. Rosco strongly
recommends that the operator depend on the Controller
rather than setting the application rate manually. The
Controller’s calculations are more reliable and accurate.
Return to
Last Viewed
Return to
Thumb Index
To Next Page
Loading...