Operation
4-9
Part 1612500−02
E 2018 Nordson Corporation
8. Adjust the controller to achieve the desired spray pattern and powder
flow rate.
The controller interface displays actual kV or μA output when the spray gun
is spraying and setpoints when the spray gun is off. The air flow displays
always show the setpoints.
On Initial Startup: With the spray gun triggered, air set to zero, and no
parts in front of the spray gun, record the μA output for each spray gun in
the system. Monitor the μA output daily, under the same conditions. A
significant increase in μA output indicates a probable short in the spray gun
resistor. A significant decrease indicates a resistor or voltage multiplier
requiring service.
Purging
When purge air is turned on, the electrostatic voltage and pump air is turned
off and P appears on the flow display.
Purge the spray gun periodically to keep the powder path inside the spray
gun clean. The purge length and frequency needed depend on the
application and powder.
NOTE: The purge air only cleans the spray gun powder path. To purge the
powder hose, disconnect it from the pump and the spray gun, place the
spray gun end inside the booth, and blow it out from the pump end with
compressed air.
Shutdown
1. Purge the spray gun by pressing the Purge button until no more powder
is blown from the spray gun.
2. Press the Enable/Disable button to turn off the spray gun and put the
controller to sleep.
3. Turn off the system air supply and relieve the system air pressure.
4. If shutting down for the night or a longer period of time, disconnect
power to the controller.
5. Perform the Daily Maintenance procedures on page 4-13.
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