Operation; Pressure Relief Procedure; Apply The Fluid - Graco 26C624 Instructions Manual

Operation

Operation

Pressure Relief Procedure

Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, and
splashing fluid, follow the Pressure Relief Procedure
when you stop spraying and before cleaning,
checking, or servicing the equipment.
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
container to relieve the fluid pressure.
F . 11: Pressure Relief
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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
regulation) 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
completely clogged or that pressure has not been
12

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:
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•
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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.
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
Incorrect
Correct
. 12: Correct Spray Method
. 12.
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