Troubleshooting
3A1320L 37
Screed box burner does
not ignite, does not
remain ignited, or can
not change heat output
Empty LP-gas tank Replace with full tank.
LP-gas tank shut-off valve closed Open LP-gas tank shut-off valve.
Gas supply hose not connected to tank Connect gas supply hose.
Gas lines leaking or disconnected Check for gas leaks. Connect and tighten fit-
tings.
Burner regulator/flow flame adjusting valve not
functioning correctly
Replace part (see Parts manual).
Burner orifice plugged Clean or replace part (see Parts manual).
Burner assembly not functioning correctly. Replace part (see Parts manual).
Torch does not ignite Empty LP-gas tank Replace with full tank.
LP-gas tank shut-off valve closed Open LP-gas tank shut-off valve.
Torch manual gas shut-off valve closed Open manual shut-off valve.
Gas supply hose not connected to tank Connect gas supply hose.
Gas lines leaking or disconnected Check for gas leaks. Connect and tighten fit-
tings.
Torch assembly not functioning correctly Replace part (see Parts manual).
Agitator crank handle is
hard to move
Material is cold Allow time for material to reach operating
temperature.
Bushings are worn Replace bushings (see Parts manual).
Linkage ball rod ends need lubrication Add grease.
Foreign material lodged between agitator and
kettle
Remove material in kettle and CAREFULLY
dislodge and remove foreign material.
ControlFlow
™
gate valve
difficult to open
or close
Cold material temperature Heat material to operating temperature.
Make sure thermometer is free to move.
Gate sticking in guides Check for excess material in guides. Apply
heat as required and remove excess mate-
rial. Add grease to lubricate guides.
Bushings are worn Replace bushings (see Parts manual).
ControlFlow gate valve
leaking
Gate not completely closed Close gate completely.
Foreign material lodged in gate opening CAREFULLY dislodge and remove foreign
material.
Screed box leaking Foreign material in screed box discharge open-
ing
CAREFULLY dislodge and remove foreign
material.
Dirty screed box CAREFULLY clean box. All moving parts
need to be free of debris.
Incorrect deployment rod linkage length Adjust length (see page 21).
Incorrectly adjusted screed box/bead dispenser
box actuator
Adjust lever (see page 21).
Worn screed box shear bar Replace gate (see Parts manual).
Worn screed box shear bar stop Replace trough (see Parts manual).
Excessive material
buildup when starting
and stopping extruding
Screed box not adjusted to ground See Operation manual.
Screed box open when ThermoLazer is
stationary
Synchronize ThermoLazer and screed box
motion.
Foreign material in screed box discharge open-
ing
CAREFULLY dislodge and remove foreign
material.
Dirty screed box CAREFULLY clean box. All moving parts
need to be free of debris.
Problem Cause Solution
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