Nordson Encore LT, Product Manual, Page: 42 / 92

Operation
4-8
Part 1604857-04
E 2014 Nordson Corporation
Startup
(contd)
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. Point the spray gun into the booth and press the trigger to start spraying
powder.
6. Adjust fluidizing air pressure if necessary, using the needle valve on the
rear panel of the controller:
S
Box Feeder: Fluidizing air only turns on when the gun is triggered.
The air flow should just fluidize the powder around the pickup tube.
The powder should not boil violently or fountain out of the box.
S
Feed Hopper: Fluidizing air is on continuously as long as the
controller is on. The powder should boil gently, without any fountains.
7. Adjust the controller to achieve the desired spray pattern and powder
flow rate.
The controller interface displays actual kV or

A 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

A output for each gun in the system. Monitor
the

A output daily, under the same conditions. A significant increase in

A
output indicates a probable short in the 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 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 gun, place the gun end
inside the booth, and blow it out from the pump end with compressed air.
Powder Box Installation
NOTE: The vibrator table can hold a maximum 25 kg (50 lb) box of powder.
1. See Figure 4-6. Lift the pickup tube up and swing the tube bracket down
and under the pickup tube end to hold it in place on the arm.