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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
spray 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., or when mater-
ial viscosities are high, higher material pump pressures
may be necessary.
The gun air switch assembly MUST BE OPENED (down
position) 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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