Service - Graco Husky A Series Instructions Manual

See the Parts List on page 13.
1. Relieve the pressure, and disconnect the
compressed air supply to the pump and leak
detector.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
2. Remove the clamp (7), and remove the leak
detector lid (L).
3. Flush the inside of the leak detector with water or
a cleaner compatible with the liquid that has been
pumped.
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Service

Routine Cleaning and Test
4. To test the leak detector, connect an air line to the
leak detector air line fitting (10), and disconnect
the vinyl tube (2) at the pump shut-off valve (1).
5. Turn on the air.
Air should be flowing through the tube (2).
6. Push the float (4) up to simulate a detected leak.
Air should stop flowing through the shut-off valve
tube (2) and be redirected to flow out the alternate
air outlet. If air does not stop flowing, the leak
detector actuator valve (M) is defective and needs
to be replaced. Contact your Graco distributor.
If air flow through the shut-off valve tube (2) stops
when you raise the float, the leak detector is
operating correctly. Reassemble the leak detector,
and set the regulator at 50 to 60 psi
(0.34 to 0.41 MPa, 3.4 to 4.1 bar).