6
Rosco Maximizer 3B Asphalt Distributor
6-15
Operation
Portable LPG Torch
A portable LPG torch may be supplied on the Maximizer
3B as an option. If the unit is equipped with LPG burners
for tank heating, the portable torch is plumbed into the
unit’s LPG burner regulator. If the unit is equipped with
diesel fired burners, the portable torch will have its own
LPG tank and regulator.
Use extreme caution when operating
a portable torch, either independently of the
Maximizer 3B or as an integral part of the Maximizer
3B burner fuel system. Read and be familiar with the
torch operating instructions. Any external flame is
extremely hazardous around the Maximizer 3B and
can cause fire and explosion. Follow all of the safety
precautions provided for burner operation in this
manual.
Portable LPG Torch Ignition
1. Open valve on LPG tank. If torch has separate
regulator, set regulator for no more than 15 PSI.
2. Open the shut-off valve on the torch with the pilot
valve closed. When the pilot valve is closed, the
orifice will allow enough LPG flow to light the torch.
3. To prevent injury, use a wick-type torch to light the
portable torch. Do not use a match or lighter.
Using a portable torch is extremely
hazardous. Use a sweeping motion when using the
torch. Do not direct the flame on one point for an
extended period of time. Fire and explosion will
occur.
4.
Open pilot valve on torch to allow enough flow for
torch operation.
Portable LPG Torch Extinguishing
1.
Close pilot valve to shut down flame.
2.
Close tank valve and allow the fuel to flow to the
burners until they go out.
3.
After pilot flame goes out, close shut-off valve and
store torch.
16. Open valve for upper burner if equipped.
17. Burners should be operating. If not, turn off
valves and do not light until problem is fixed, (see
High Temperature Limit Control
NOTE: This feature is designed as a safety feature only.
It is not to be used for thermostatic control.
This feature causes the burners to automatically shut
off when the high temperature limit is reached, (
). The burners will not restart until the Burner
Control switch on the Plus One Controller is shut OFF
and then turned back on to reset the control. However,
until the material cools to less than the temperature limit
setting, the burners will not relight. This feature helps to
prevent overheating the material.
NOTE: Burner Control switch is a momentary switch and
will return to the OFF position. An icon will display
on the screen when the Burner Control switch
has enabled the burner system controls.
DO NOT leave the unit unattended
while heating material. Monitor the Controller
display temperature, as well as the dial or pencil
thermometer, to insure that all equipment is
functioning properly and that the material does not
heat beyond the required spraying temperature,
Guideline Temperatures For Liquid Asphalts
LPG Burner Auto Extinguishing
1.
Close the tank valve and allow the fuel to flow to the
burners until they go out.
2. Close the pilot and shut-off valves in LPG lines.
3. Turn OFF burner switch in rear control box.
NOTE: Burner Control switch (
) is a
momentary switch and will return to the OFF
position. An icon will display on the screen when
the Burner Control switch has enabled the
burner system controls.
4.
Wait 5 minutes before relighting to ensure there are
no fumes in the flue.
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