Graco SaniSpray HP 20 Operation - Repair - Parts page 22

Troubleshooting
Problem
Sprayer makes sound but
no disinfectant is sprayed
when Sprayer Trigger is
pulled
Sprayer sprays with poor
coverage
Sprayer runs
intermittently or very slow
22
Cause
Sprayer is not primed.
Prime Pump/Spray Knob is
downward in PRIME position.
Spray Tip is not in SPRAY position.
Pump Filter plugged.
Speed Control is set too low.
No or low disinfectant in FlexLiner.
Pump has reached the end of its life. Replace pump assembly.
Diagnostic Light blinks four times
when the Sprayer Trigger is pulled.
Indicates a locked rotor condition.
Spray Tip is not in correct position
Spray Tip is worn or damaged
Pump has reached the end of its life. Replace pump assembly.
Disinfectant has gotten into the
sprayer.
Solution
Prime the pump. See Pressure
Relief Procedure, page 8.
Make certain there is only one
FlexLiner in the Cup Support.
Make certain the Cup Lid is
properly threaded to the Cup
Support. If threads are visible
below the Cup Lid when tight,
fully remove 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.
Make certain the cup assembly is
properly locked on the sprayer.
Make certain all the air is out of
the FlexLiner and the VacuValve
Cap is properly closed.
Clean VacuValve Reservoir and
VacuValve Air Hole. See
Cleaning VacuValve, page 18.
Replace VacuValve Cap.
Clean sprayer. See Cleaning
Sprayer, page 15.
Turn Prime Pump/Spray Knob
forward to SPRAY position.
Turn Spray Tip to SPRAY
position.
See step 16 on page 17.
Increase speed until unit sprays.
Refill FlexLiner with disinfectant
and prime the pump. See
Refilling FlexLiner, page 14.
Replace pump assembly and
motor.
Rotate Spray Tip to SPRAY
position.
Replace Spray Tip. See Choose
Your Spray Tip, page 12.
Allow the sprayer to dry out.
Replace motor and
Enclosure/SmartControl
assembly.
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