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Spray Technique
Always operate safely and follow all safety procedures
outlined.
To achieve the optimum spray pattern for each application,
the appropriate mixing chambers are available in seven
sizes.
The standard mixing chamber supplied with your gun will
be adequate for all but the smallest and largest applica-
tions.
Foam rise and cure times will vary according to the mate-
rial and substrate temperature. Higher material or substrate
temperature will increase rise and cure times; lower mate-
rial or substrate temperatures will decrease rise and cure
times. Consult your chemical manufacturer's data specifi-
cation sheets for their recommended spray temperatures.
Under most circumstances, both components will be used
at identical temperatures.
Section 2 - Operation: Start-Up Instructions
Higher pressures and temperatures may be used to
increase material break-up, improve mixing and speed
rise times. With hose lengths over 50 ft.(15.25 m), or
when material viscosities are high, higher material
pump pressures may be necessary.
The gun air valve MUST BE OPENED prior to spraying
to provide air for trigger operation and purge air when
the trigger is released.
When spraying, the gun trigger may be depressed con-
tinuously, or triggered at the end of each stroke. A
smooth, even layer is best achieved by moving the
gun back and forth in a slow, even motion, overlapping
the previous pass about 50 to 75 percent. DO NOT
SPRAY OVER RISING FOAM! The ideal gun-to-surface
distance is about 18 to 24 inches. Be sure to point the
gun directly at the surface to be sprayed. Spraying at
an angle to the surface will cause the foam to be rough
and will generate overspray.
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