Tamper Resist Option
Note: The area of spray coverage is determined by
the distance between the spray valve nozzle and
the work surface. Refer to the chart on page 11 to
determine this distance.
11. Set the reservoir pressure regulator
according to the fluid viscosity. For
example, low viscosity fluids require only
1 to 3 psi (0.07 to 0.2 bar). Higher pres-
sures are required for more viscous flu-
ids.
12. Close needle stroke control knob, fully
(clockwise), then set at one turn open.
This is a starting point only. Final setting
will be determined by the desired
flow rate.
13. Check the nozzle air gauge. If not at
zero, turn the regulator knob clockwise
to turn off the nozzle air.
Note: Regulator knobs on EFD tanks and conrollers
have a push-to-lock, pull-to-unlock feature.
14. Place a container under the valve
to collect the fluid during this setup
procedure.
15. Turn on the power switch. Press the
time override button to place the 7040
into the manual mode (---).
16. Press and hold the cycle button or
optional foot pedal. Continue to hold
until the fluid lines and the valve are
primed and purged of all air.
The 780S valve can be ordered in a tamp-
er resist configuration to limit unauthorized
adjustment.
In the TR configuration, stroke adjustment
can only be made when a special stroke
control knob is inserted into the stroke
mechanism.
A tamper resist stroke kit can also be
ordered as a retrofit for existing valves.
Part # Description
780S-TR Tamper resist spray valve
.046
7544SS Tamper resist stroke kit
Stroke Control Reference
8 / Setup
The Stroke Control Reference allows you
to calibrate the stroke control setting or
document the dispensing process.
To calibrate, close the stroke control knob
all the way. Loosen the set screw and turn
the reference ring so the zero on the ring
aligns with one of the two reference marks
on the valve body. When the set screw is
tightened, the valve is calibrated.
Existing 780S Series valves are easily
upgraded with the Stroke Control
Reference Kit (#780SR-KIT).
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