Graco SaniSpray HP 20 Operation - Repair - Parts page 27

Problem
Sprayer sprays with poor
coverage
Sprayer runs
intermittently or very slow
Disinfectant leaks out of
the cup threads.
3A7646F
Cause
Spray Tip is not in correct position.
Spray Tip is worn or damaged.
Outlet valves are dirty or worn.
Material being sprayed is aerated.
Pump has reached the end of its life. Replace pump assembly.
Disinfectant has gotten into the
sprayer.
Cup not properly seated.
Troubleshooting
Solution
Rotate Spray Tip to SPRAY
position.
Replace Spray Tip. See Choose
Your Spray Tip, page 16.
Remove two pump plugs and
front valve to gain access to the
three outlet valves. Clean outlet
valves. Outlet valves are not
installed properly. See Cleaning
Outlet Valves, page 23.
Replace if necessary.
Make certain there is no foam in
the cup. Wait until foam has
subsided. See Starting a New
Job, page 13, to evacuate all air
from FlexLiner.
Allow the sprayer to dry out.
Replace motor and/or
SmartControl Enclosure
Assembly.
Make certain that there is only
one FlexLiner in Cup Support.
Make certain there is no
damage, such as a crease, on
the top surface of the FlexLiner. If
damaged, DO NOT USE.
Make certain the Cup Lid is
properly threaded to the Cup
Support. If threads are visible
below the Cup Support when
tight, fully remove the Cup Lid
and reinstall to the Cup Support
so no threads are visible when
tight.
Make certain the Cup Lid is
tightened to Cup Support. For
proper sprayer operation lid must
seal tightly with the cup.
Avoid flexing or pushing on the
Cup Support when you evacuate
the air out of the FlexLiner.
Avoid pulling down on the
FlexLiner when you evacuate the
air out of the FlexLiner.
Make certain there is no damage
to the FlexLiner lip or the Cup Lid
gasket.
Make certain the FlexLiner lip
and Cup Lid gasket are free of
debris.
Replace FlexLiner.
27