Operation
4-7
Part 1602221-01
E 2012 Nordson Corporation
Daily Operation
WARNING: Allow only qualified personnel to perform the following tasks.
Follow the safety instructions in this document and all other related
documentation.
WARNING: This equipment can be dangerous unless it is used in
accordance with the rules laid down in this manual.
Startup
1. Turn on the spray booth exhaust fan.
2. Turn on the system air supply and power.
3. Fill the powder source 2/3 full of powder. When fluidized, the powder
volume will expand. Do not overfill.
4. Make sure the spray gun is not triggered, then turn on controller power.
The displays and icons on the controller interface should light.
NOTE: If the spray gun is triggered on when the controller is powered up, a
fault will occur and the Trigger LED will blink fast. To clear the fault, release
the trigger and press the Disable/Enable button to put the controller to
sleep, then press the button again to wake it up.
5. Make sure the powder in the hopper is being fluidized properly.
6. Point the spray gun into the booth and press the trigger to start spraying
powder.
7. Adjust the controller to achieve the desired spray pattern and powder
flow rate.
The controller interface displays actual kV or μA output when the gun is
spraying and setpoints when the gun is off. The air flow displays always
show the setpoints.
On Initial Startup: With the gun triggered, air set to zero, and no parts in
front of the gun, record the μA output for each 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 gun resistor. A significant decrease
indicates a resistor or voltage multiplier requiring service.
Purging
Press the purge trigger to purge the gun. The controller turns on the purge
air, turns off the electrostatic voltage and pump air and displays P on the
flow display.
Purge the gun periodically to keep the powder path inside the spray gun
clean. The purge length and frequency needed depend on the application
and powder.
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