GUSMER
Model D Spray Gun
14
2943J-1-ID Issue 2
The objective is to obtain a setting
which will result in this type of
pattern.
Figure 11. Desired Pattern
Moving the adjustment screw out
beyond this point may cause the
pattern to split.
Figure 12. Split Pattern
As you come close to attaining the full-round pattern, make fine
adjustments using 1/8 turns or less in either direction as required to give
you the best possible distribution.
If you are unable to attain the full-round pattern, it is probable that the
material temperature or spray pressure is not correct. If upon reaching the
maximum number of turns out from the point of valving the pattern
remains closed, the material temperature is too low. If the pattern splits or
has a hollow center, even with the adjustment screw at the minimum turns
from the point of valving, the material temperature is too high.
WARNING:
A “
BUN OF URETHANE FOAM CAN BE DANGEROUS
. T
HE EXOTHERM
CREATED BY THE CHEMICAL REACTION IN THE INTERIOR OF THE BUN MAY NOT DISSIPATE
BECAUSE IT IS TOO WELL INSULATED
. T
HIS EXOTHERM COULD REACH THE FLASH
(
BURNING
)
POINT OF THE FOAM HOURS AFTER THE SPRAYING HAS STOPPED
. W
HEN A BUN
LIKE THIS IS CREATED
,
IT IS MANDATORY THAT IT BE BROKEN INTO SMALLER PARTS SO THE
HEAT BUILD UP WITHIN IT CAN DISSIPATE
.