Graco PRO 5500wb Instructions-Parts List Manual page 22

Operating the Spray Gun (continued)
Activating and Adjusting the Electrostatics
8. Make sure the fan (A2) and atomizing (A1) air are
on, then turn on the turbine air (TA).
9. The turbine air pressure should be adjusted to 30
psi (210 kPa, 2.1 bar) at the gun manifold inlet
when air is flowing. Do not exceed 40 psi (280
kPa, 2.8 bar) air pressure at the gun manifold inlet
as there is no added benefit and turbine life could
be reduced.
Use the chart below to set the proper pressure at
the turbine hose inlet. Do not exceed these recom-
mended pressures or turbine life will be reduced.
Turbine Air Dynamic pressure at the turbine
Hose Length hose
voltage
15 ft. (4.6 m) 36 psi (251 kPa, 2.5 bar)
25 ft. (7.6 m) 38 psi (265 kPa, 2.6 bar)
50 ft. (15.3 m) 40 psi (280 kPa, 2.8 bar)
75 ft. (22.9 m) 42 psi (294 kPa, 2.9 bar)
100 ft. (30.5 m) 45 psi (314 kPa, 3.1 bar)
22 308496
Operation
inlet required for full
10. Check the voltage output of the gun using a high
voltage probe and meter or by reading the ES (kV)
Display Module.
NOTES:
D The gun's normal high voltage reading is 45 to 55
kV due to spraying current demands and isolation
system losses.
D See Voltage Loss Troubleshooting on page 26 to
correct voltage problems.
CAUTION
The Graco warranty is void if the spray gun is con-
nected to a non-Graco voltage isolation system or if
the gun is operated above 60 kV.
11. Operate the voltage isolation system as instructed
in the system manual.
12. Use the same spraying technique you would use
with a conventional air spray system to coat the
workpiece.
13. Relieve the pressure and discharge the voltage
when you stop spraying.
NOTE: Flush and clean the equipment by following the
instructions in the Maintenance section, pages 23 to
25.