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T[oubleshooting
(continued)
I
Caution
Avoid
contact
with hot
adhesive
and
applicator tip.
May
cause
burns.
Wear safety
glasses
when
using.
1.
Check
to make
sure
that the proper temperature
module is
inserted
and
fastened
into
the
applicator for your adhesive.
See the
Temperature
Module Installation procedure on
page
4 of this manual
for proper
selection
and
installation of the temperature module.
If
the
flow
problem
still
exists
with
the proper temperature
module
installed, proceed to next
step.
2.
If
adhesive
is not properly extruded during shut-down
(see
shutdown
procedure on page
l2),
the
applicator requires
15
minutes
of
heat-up
time before adhesive
will flow
properly.
If
the
flow
problem
still
exists
after the
15
minute heat-up, proceed to the next
step.
3.
When using high viscosity 3M adhesive (3779,3789,3747
adhesive),
use a
.125" fluted tip (3M stock number 62-9940-6920-l)
or
a
high viscosity valve (3M stock number 62-9729-9930-4).
If
a
flow
problem
still
exists
with
the proper
valve
and
tip being
used,
proceed
to the next
step.
4.
If
the
applicator is on for
a
long period of time without dispensing
adhesive
(for
example
2-3 hours), charring may occur atthe nozzle
tip. Charring blocks
adhesive
flow
and
may
cause
adhesive backmelt.
Remove charred adhesive
by pushing
a
paper
clip into
the
tip to
clear
the opening.
If
the
flow
problem
still
exists, proceed
to the next
step.
Important
To avoid this problem, remember to
follow
the shutdown procedure
on
page
12 and
to extrude
at
least one adhesive
cartridge every three hours
while
the
applicator is
on.
l.ffi
ffi
7\
Caution
Use
only the proper temperature
module for the 3MrM Quadrackru-
shaped
adhesive
used.
Failure
to do
so
may
cause
burns
or
damage applicator. Refer
to Table
1
for
proper
module
selection
for 3M
Quadrack-
shaped adhesives.
Use
only with 3M
Quadrack-
shaped
Jet-melt
Adhesive
cartridges. Use
with
any
other
materials
may
cause
hazardous
conditions.
/f@s[NG
24
@
3M
1996
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