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Operation
311053H 11
Operation
Pressure Relief Procedure
1. Shut off the power to the pump.
2. Turn off the air and fluid supply to the gun.
3. Close the bleed-type master air valve (required in
the system).
4. Trigger the gun into a grounded metal waste con-
tainer to relieve the fluid pressure.
5. Open the pump drain valve (required in the system)
to help relieve fluid pressure in the displacement
pump. In addition, open the drain valve connected to
the fluid pressure gauge (in a system with fluid regu-
lation) to help relieve fluid pressure in the hose and
gun. Triggering the gun to relieve pressure may not
be sufficient. Have a container ready to catch the
drainage.
6. Leave the drain valve(s) open until you are ready to
spray again.
7. If you suspect that the spray tip or hose is com-
pletely clogged or that pressure has not been fully
relieved after following the steps above, very slowly
loosen the hose end coupling and relieve pressure
gradually, then loosen the coupling completely. Now
clear the tip or hose obstruction.
Apply the Fluid
Adjust the system control device, if it is automatic, so the
gun starts spraying just before meeting the workpiece
and stops as soon as the workpiece has passed. Keep
the gun a consistent distance, 8 to 10 in. (200 to 250
mm), from the surface of the object being sprayed.
To achieve best results when applying fluid:
• Keep gun perpendicular and 8 to 10 inches (200 to
250 mm) from object being sprayed.
• Use smooth, parallel strokes across surface to be
sprayed with 50% overlap. See F
IG. 10.
FIG. 9: Pressure Relief
TI8174a
FIG. 10: Correct Spray Method
Incorrect
Correct
TI8098a
TI8099a