Application Die Care And Maintenance; Infrared Burner Service Data - Titan THERMOMARK 300 Série Mode D'emploi

THERMOMARK
6.3

APPLICATION DIE CARE AND MAINTENANCE

The dies for this unit are somewhat fragile
i
due to the carbine runners and the aluminum
construction. However, the dies will provide a
long service life with some basic care and daily
maintenance.
The dies for this unit are fixed and adjustable mil application,
providing a specific line thickness for a given die. Mil thickness
is stamped on the face of the extrusion bar.
This is a theoretical application thickness, since thermoplastic
is a product that shrinks upon cooling. Shrink and cooling
rates can vary dramatically with variations in the thermoplastic
formula, ambient temperature, and road surface texture.
All dies are manufactured with a 25% or more oversize extrusion
gate (i.e. a 90-mil die is cut to depth of 113 mil). It must be
noted that under the right conditions, thermoplastic can shrink
as much as 30% upon cooling.
•
Keep the die as clean as possible between uses.
•
Always store your die in a fully closed position, where the
inside shoe lip goes under the extrusion bar gate.
•
Replace the springs if die does not close properly. Always
have at least 6 extra die springs.
•
Handle the die with care so as not to damage the carbide
runners.
•
Prior to use, inspect the die for visible warping, bent
aluminum, and chipped or worn carbide runners. If the die
is warped or bent, it must be reworked to provide optimal
performance.
•
It is acceptable to heat the die with a torch - but use extreme
caution when doing so. When heating a die with a torch,
use caution so none of the aluminum surfaces become
overheated, and UNDER NO CIRCUMSTANCES should you
apply heat to the springs. Use a torch with a spread flame
and keep the flame moving at all times. Steel components
such as the die runners and the extrusion bar will require
more heat than the aluminum components.
•
Never try and force open a die when it is cold, and use
minimal effort after it is heated.
6.4

INFRARED BURNER SERVICE DATA

PROCESSING
Proper ignition of the gas on the face of the infrared burners
known as "processing" is an absolute must. The processing
condition is evident when a thin blue flame covers the
refractory grid of the burner, and the protective wire screen is
glowing red.
The processing condition is achieved by carefully controlling
the air fuel mixture by means of a balance of orifice diameter
vs. pressure of the fuel. Proper mixture of the air and fuel will
produce and excellent infrared heat transfer to solid materials
in the front of the processing screen, without the drawback of
open flames.
PRE-IGNITION
Due to the nature of the way this system works, it is possible
to have a condition known as "pre-ignition". This condition
generally occurs when the burner is overheated, making the
air fuel mixture ignite prior to reaching the refractory grid.
Pre-ignition can be identified by a howling or poppling sound
coming from the burner assembly.
1. When pre-ignition occurs, immediately turn the burner
system off. If left operating, excessive carbon buildup
will occur, causing inefficiency and ultimately permanent
damage.
2. Allow the system to cool for about 5 minutes and re-
ignite. As soon as proper ignition occurs, turn the valve
perpendicular to the fuel line, reducing the possibility of
pre-ignition. If the problem persists, contact technical
service.
SHUTDOWN, CLEANING AND MAINTENANCE
21