3
Binks MODEL 7
™
SPRAY GUN
GUN HANDLING
The first requirement for a good resultant finish is the proper
handling of the gun. The gun should be held perpendicular to the
surface being covered and moved parallel with it. The stroke
should be started before the trigger is pulled and the trigger
should be released before the stroke is ended. This gives accurate
control of the gun and material.
The distance between gun and surface should be 6 to 12 inches
depending on material and atomizing pressure. The material
deposited should always be even and wet. Lap each stroke over
the preceding stroke to obtain a uniform finish.
In normal operation, the
wings on the nozzle are hori-
zontal as illustrated here.
This provides
a vertical fan
shaped pattern
which gives
maximum
coverage as
the gun is
moved back
and forth parallel to the
surface being finished.
Spray width adjustment: Turn clock-
wise for round, counterclockwise for fan.
Fluid control screw: Turn clockwise to
decrease flow, counterclockwise to
increase flow.
As width of spray is increased, more
material must be allowed to pass through
the gun to obtain the same coverage on
the increased area.
SIPHON SPRAYING
Set atomization pressure at approximate-
ly 50 PSI for lacquer and 60 PSI for
enamel. Test spray. If the spray is too
fine, reduce the air pressure or open fluid
control screw. If the spray is too coarse,
close the fluid control screw. Adjust the
pattern width and repeat adjustment of
spray if necessary.
PRESSURE SPRAYING
After selecting correct size fluid orifice,
set fluid pressure for desired flow. Open
atomization air and test spray. If spray is
too fine, reduce air pressure. If spray is
too coarse, raise air pressure. Adjust pat-
tern width and repeat adjustment of
spray.
Keeping fluid control screw in open posi-
tion will reduce fluid needle wear.
The spray pattern
of the Binks gun is
variable from round
to flat with all
patterns in between.
Spray width
adjustment
Fluid
control
screw
NOTE
To reduce overspray and obtain maximum efficiency, always
spray with the lowest possible atomizing air pressure.
NOTE
To reduce overspray and obtain
maximum efficiency, always spray
with the lowest possible atomizing
air pressure.
Coating should be even
and wet when spraying
Coating will
be light at
this point
Coating will
be heavy
at this point
Start
stroke
Pull
trigger
Release
trigger
End of
stroke
RIGHT
WRONG
TRAVEL OF GUN
6 to 12 inches
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