Graco HydroShield WABH00 Instructions - Parts Manual page 73

Problem
Problem Problem
The system does not spray.
Air is in the fluid.
Improper spray pattern or gun
operation problem.
No fluid when gun is triggered (or
wrong fluid pressure).
Poor wrap.
Low or no spraying voltage.
3A8492A
Diagnosis
Diagnosis Diagnosis
1. The system is not in Spray
mode.
2. The isolation fluid pump is
empty and there is no material
to spray.
3. The fluid pressure is too low
or zero.
4. The paint trigger signal is not
being recognized.
Entering Spray mode before the
system is primed.
Issue with spray gun setup or
maintenance.
System is in Standby mode.
Issue with the regulator that sends
air to drive the high pressure pump
(75).
Low spraying voltage.
Issue with spray gun setup or
maintenance.
• The ground rod (18) is not
raising.
• The isolation valve (227) is not
raising.
• The components or cabinet (9)
is dirty.
• The electrostatic shields (12 and
82) are not in place.
The ES request input does not
recognize a signal and does not
raise the ground rod.
Troubleshooting
Solution
Solution Solution
1. Change to Spray mode.
2. Give the system time to fill
before trying to paint.
3. Increase the gun fluid pressure
on the Home screen or Preset
screen.
4. Be sure the paint trigger input
is getting at least 70 psi. If
this does not correct the issue,
check the pressure switch
and wiring in the electronics
control panel.
Note
Check the Status screen to
see if the system detects
the gun trigger. See
Status Screen 1, page
Enter Spray mode after priming
the system.
Refer to your gun manual.
Change to Prime, Purge, or Spray
mode.
• Set the gun fluid pressure on the
Home screen or Preset screen.
• Check the electro/pneumatic
regulator (V2P) (415)
function using Maintenance
screen 9. See
Maintenance 9: V/P, page
Increase the air pressure or the
voltage setting for the gun.
Refer to your gun manual.
See Voltage Loss
Troubleshooting, page
Use the Status screen to see
whether the system detects
the ES request input. See
Status Screen 1, page 50
Status Screen 3, page 51
50.
63.
76.
and
73