Nordson Sure Coat, Manual

Page: 46 / 91

Operation
A 5-6
Part 331235C
E 2003 Nordson Corporation
Part A: System Overview
Daily Operation
(contd)
Table A 5-4 Display Screens
AFC
Display
Units
Display with Gun Triggered
1
Display with Gun Not Triggered
On kV Gun output
(controller modifies kV to match

A)
Initial kV setting
(factory kV)
On

A Actual

A
2, 3
AFC set point
2, 3
Off kV Actual kV kV set point
Off

A Actual

A Blank
NOTES:
1. Use the VIEW key to toggle the display between kV and

A values. The units are shown on the
display and the bar graph.
2. Pressing the AFC key shows the AFC set point then the actual

A current feedback from the gun on
the display and the bar graph.
3. Pressing the +/– keys switches the display to AFC set point. Each time you press the keys changes
the AFC set point.
4. See Figure A 5-2. Trigger the gun to test the spray pattern. Trigger the
guns using one of the following methods:
S
Gun Trigger Key (2): Triggers individual gun.
S
Gun Group Key (11): Triggers a pre-programmed group of guns.
S
ALL Key (9): Triggers all guns in the system.
5. Adjust the set points as necessary. Refer to Set Point Adjustments in
this section for more information.
NOTE: Obtaining a high-quality finish and maximum transfer efficiency
(percentage of powder sprayed that adheres to the part) requires
experimentation and experience. Settings for electrostatic voltage and air
pressure affect overall coating performance. In most applications, the
settings should produce a soft spray pattern that directs as much of the
powder as possible onto the part with a minimum of overspray. These
settings allow the maximum amount of charged powder to be attracted to
the grounded part.
NOTE: Lowering the voltage is a common method for trying to improve
coverage of deep recesses and interior corners of parts. However, lowering
the voltage may also reduce the overall transfer efficiency. Powder velocity,
direction, and pattern shape can be just as important as electrostatic
voltage in coating these areas.
6. Put the system keyswitch in the READY position. The system is now
ready for normal operation when the conveyor starts.