Operating Guide

Maintenance
32 3A6419B EN
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 Spray Tips with compati-
ble cleaning fluid and brush after spray-
ing.
• Tips may require replacement after 15
gallons (57 liters) or they may last
through 60 gallons (227 liters) depend-
ing on abrasiveness of paint. See
Spray Pattern Quality, page 18.
Storage/Priming Tool
Perform these steps if you are experiencing
difficulty priming your sprayer.
For ProX21, see Inlet Valve Removal, page
33.
1. Perform Pressure Relief Procedure,
page 14.
2. Remove Pump Armor bottle cap. Insert
small fluid tube into bottom of Stor-
age/Prime Tool, and thread tool onto
the bottle. NOTE: For best results,
make sure the bottle is full of Pump
Armor.
3. Remove sprayer Suction Tube. Insert
tool into the inlet and push up firmly
until it stops.
Maintenance Activity
1. Inspect motor shroud openings for
blockage every time you spray.
2. Clean/inspect inlet screen, InstaClean
filter, and gun filter every time you spray.
Replace if the filter cannot be cleaned or
is damaged.
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.