TM 5-3895-356-14&P
HEATING BITUMEN IN DISTRIBUTORS
7. To light burners, spread wick
2. The blower and fuel pump
High Pressure Generating Burners
m pan so that fire will be under coil 5
1
10
are an integral unit and engaging the
21
27
18
and vaporizing plug, hold finger over
blower will also engage the fuel
1. Use clean, moisture-free
19
vaporizing plug to prevent fuel from
pump.
kerosene
26
squirting into flue, open needle valve
25
slightly and shut off when pan is 1/4
2. On engine drive units to
full Ignite wick and wait until gas
operate fuel pump, disengage engine
5
issues from vaporizing plug, then
clutch, engage fuel pump clutch, then
open needle valve slightly If coil is
reengage
engine
clutch
On
generating properly, an almost
hydrostatic
colorless gas will issue from
vaporizing plug Open valve more as
necessary to obtain a bright orange
LOW PRESSURE ATOMIZING
flame (Note On units having
BURNERS
retractable burners, remove holding
1 Burner Tip
pin and transfer burner from traveling
Figure
15
2 Burner
position in flue to firing position )
3 Needle Flow Valves
4 Low Pressure Air Supply Line
8. A short blue flame that is
5 Air Relief Valve
easily extinguished indicates over-
6 Weights
HIGH PRESSURE
generation in the coils, caused by too
7 Butterfly Valves Figure 15
GENERATING BURNERS
small vaporizing plug opening, or
8 Air Pressure Gauge
1 Burners
carbon formation in coil Particles of
Figure 14
2 Vaporizing Plug
carbon can be cleared from
On engine drive unit to operate the
3 Pan
vaporizing plug while burner is in
4 Flow Control Needle Valves
blower disengage engine clutch,
operation
with
burner
cleaner
engage blower drive clutch, then
drive units the fuel pump is driven off
furnished with unit If flame is still
reengage engine clutch.
of the hydrostatic pump drive line and
short and blue, bore out vaporizing
On hydrostatic units the blower is
regulated by a pressure relief valve A
plug with No 51 drill 9 A yellow smoky
driven by one of three methods
bypass valve is provided to divert fuel
flame indicates that needle valve is
1) The blower can be driven off
around the pressure regulator and
open too far, causing under-
the hydraulic pump drive
should be opened when burners are
generation. It can also be the result
pump with a V-belt and is
not required
of t
engaged by operating the
3. Circulating bitumen in tank
10. Do
not
leave
burners
lever on the blower clutch
while heating is recommended for
unattended.
2) An auxiliary hydraulic motor
faster heating and reduced carbon
11. Do not heat bitumen over
blower drive is available
23 maximum
formation on flues Only when the
spraying
temperature
which is engaged by turning
asphalt pump is "frozen" is it
recommended by supplier
the motor control valve to the
acceptable to operate burners
12. Do not remove material from
"ON" position
28 tank while burners are in operation or
without circulating material However,
3) An independent engine drive
in this case free the asphalt pump by
automatic burner controls are set to
is available to operate the
applying heat to pump housing and
operate
blower and is engaged by
start circulating as soon as possible
13. When burners are not in use,
starting the engine.
4. Correct fuel pressure should
close heat exhaust stack cover to
On trailer mounted units and
be between 45 and 60 PS I If less,
prevent loss of heat and to keep
some truck mounted units, the
inspect valve in line from tank to
water from entering stack opening.
blower Is driven by operating a
pump, strainers, etc for possible
separate engine drive
obstructions If you are sure pump is
Low Pressure Atomizing Burners
3. Circulating bitumen in tank
1
getting sufficient fuel, then check
10
18
while heating is recommended for
pressure relief valve. An adjusting
1. Clean , moisture-free fuel is
faster heating and reduced carbon
screw with lock nut is inside of dome-
important Use kerosene, fuel oil or
formation on flues Only when the
20 shaped cap
diesel fuel Do not use gasoline.
asphalt pump is "frozen" is it
5.
Do not light burners
acceptable to operate burners
unless you are sure flues are
without circulating material However,
covered at least 6" the full length of
in this case free the asphalt pump by
11
the tank On tanks having "High-Low"
applying heat to pump housing and
flues It is necessary to cover only the
start circulating as soon as possible
lower flue when using the lower (or
inside) burner 6 Open covers on heat
stacks