Maintenance
3A4416A 33
Maintenance
Routine maintenance is important to ensure proper operation of your sprayer.
Airless Hoses
Check hose for damage every time you
spray. Do not attempt to repair hose if hose
jacket or fittings are damaged. Do not use
hoses shorter than 25 ft (7.6 m). Wrench
tighten, using two wrenches.
Spray Tips
• Always clean tips with compatible
cleaning fluid and brush after spraying.
• Tips may require replacement after 15
gallons (57 liters) or they may last
through 60 gallons (227 liters) depend-
ing on abrasiveness of paint.
Pump Repair (ProX Only)
When pump packings wear, paint will begin
to leak down outside of pump. Each time the
pump kit is replaced, check pump inlet and
outlet valves for wear or damage. Replace if
worn or damaged. Always replace inlet and
outlet valves every second time the pump kit
is replaced.
• See ProXChange Pump (ProX only),
page 50 or consult a Graco/M
AGNUM
authorized retailer, distributor, or ser-
vice center.
• Purchase a pump repair kit and install
according to instructions provided with
kit, before your next job.
Pump Removal
Remove airless hose, suction tube, and drain
tube.
Always perform Pressure Relief Procedure,
page 13 before starting any pump repairs and
unplug the sprayer.
1. Unplug the sprayer from the power
source.
2. Pull tabs on sides of the easy access
door towards you while pushing the
entire door up.
3. Now lift the door so that it swings out of
the way.
Activity Interval
Inspect motor shroud openings for blockage.
Daily or each time you spray
Inspect/clean InstaClean filter (ProX only), fluid inlet strainer, and
gun filter.
Daily or each time you spray
NOTICE
Protect the internal drive parts of this
sprayer from water. Openings in shroud
allow cooling of mechanical parts and
electronics inside. If water gets into these
openings, the sprayer could malfunction or
be permanently damaged.
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