Top Latch
Bottom Latch
Figure 4-8. Manhole Hatch
Fumes from asphalt materials are
poisonous and should not be inhaled. DO NOT lean
over the tank manhole cover when lling to avoid
hot gases, fumes or the possibility of hot asphalt
contact.
To load material:
1. Park the unit (or vehicle if skid-mounted) on a level
surface.
2. Ensure ALL valves on the unit are in the CLOSED
position (Refer to Page 3-6 and 3-7, Valve
Controls):
• Propane tank valve.
• Fuel valve (diesel burner only).
• Pilot valve.
• Shut-Off valve.
• Ignitor wand valve.
• Liquid asphalt valve.
• Flush valve.
• Circulating valve.
• Spray wand valves.
• Sampling valve.
• Spray bar valves, if equipped with this option.
3. Pull up the top latch and then the bottom latch to
open the manhole hatch. (Figure 4-8)
4. Insert material hose into the tank and ll 90 percent
full. DO NOT OVERFILL.
5. Close bottom latch, then top latch securely.
HEATING THE MATERIAL
The burner system produces heat that is dissipated
through the asphalt. Because asphalt resists heat
conduction, the amount of time necessary to heat the
asphalt to a sufcient temperature for spraying will vary
depending upon the type of material, tank size, amount
of material in the tank and the weather temperature.
(See Table 4-2, Asphalt Temperature Guide on the
following page.) Be sure to contact your asphalt
supplier for more information about their asphalt
product.
NOTE: Only operate the burner for a short time
(no more than 15 minutes) to allow heat to
dissipate throughout the material.
NOTE: The asphalt temperature must reach the
manufacturer’s recommended temperature
before starting the engine. Trying to spray
asphalt before it is warm enough will
damage the pump. (See Table 4-2, Asphalt
Temperature Guide, on the following page.)
The tack distributor is equipped with an LPG propane
burner system (or optional diesel burner system
described on Page 4-15). Flame ignites the burner that
is then directed through ue tubes in the bottom of the
asphalt tank to heat the asphalt material. (Figure 4-9)
It cannot be emphasized enough that
the burner ue must be covered with at least one (1)
inch (2.5 cm) of material.
NOTE: If it is necessary to heat asphalt that has
cooled more than 20° - 30° F (-6.6° to -1.1°
C) below the manufacturer’s recommended
spraying temperature, use extreme care
when reheating the material. If the asphalt
is heated too quickly or gets too hot, spots
will be created near the ue tubes that could
damage them or cause the asphalt material
to break down.
ALWAYS keep a fully-charged, dry
chemical re extinguisher within easy reach when
operating the burners.
DO NOT operate the burner system if
the tank is leaking or fuel spills have occurred. Fire
or an explosion can occur and result in serious
injury.
NEVER operate the burners or the
tack distributor in a conned area. Vapor build-up
can ignite.
44
Operation
L300 and L600 Tack Distributors 4-11
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