CHAPTER 5 TROUBLESOOTING
5-1 TROUBLESHOOTING WHEN OPERATION
PROBLEM
POSSIBLE CAUSE
TROUBLESHOOING
There is
some HMA
on surface
of roller
1. The surface of
roller is not
clean. (It may
some
impurities or
cloth on the
surface)
1. Please stop motor and clean
the roller immediately when
some impurities are
sticking on the surface of
roller.
Uneven
coating
1. Some impurities
are possible to
stick between
blade and
roller,
affecting glue
coating.
2. Probably HMA
inside tank is
not enough.
1.
Clean the roller and
change HMA.
2.
Check if HMA inside tank
is enough.
The end of
material
still with
HMA after
coating
1. Temperature of
roller is not
hot enough.
(Different HMA
has different
melting
temperature)
2. HMA is not
suitable for
coating.
(Viscosity of
HMA is too high)
1. Re-adjust temperature of
roller.
2. Change other suitable HMA.
