Graco 3A4803A, Operation, Parts

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Maintenance
3A4803A 29
Maintenance
Routine maintenance is important to ensure proper operation of your sprayer.
Cleaning Outlet Valves
Dirt and debris in the outlet valve assemblies
may affect sprayer performance and require
cleaning.
1.
To clean the three outlet valves, remove
two pump plugs and front valve.
2. Clean outlet valve assemblies with warm
water or mineral spirits.
3. Check ball should move freely against
the spring in the retainer.
4. If outlet valve assembly was removed
from the valve plug, assemble as shown.
Leave a space between the end of the
plug or front valve and shoulder on the
outlet valve assembly.
a. Make certain o-rings are on the
valve plugs and front valve.
b. Install two pump plugs and front
valve. Torque outlet valve and
pump plugs, see page 32 for
torques.
Move sprayer to a well-ventilated area and
away from flammable or combustible
materials, including paints and solvents.
Activity Interval
Inspect pump filter. Daily or each time you spray
Inspect enclosure vents for blockage. Daily or each time you spray
Inspect pump inlet holes located under pump filter for blockage. Each time the sprayer is cleaned
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NOTICE
Do not push outlet valves all the way into
the valve plugs or front valve. If outlet
valves are pushed all the way into the valve
plugs or front valve the sprayer will spray
with reduced performance.
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3/16"
(5mm)
0"
(0mm)
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