Nordson Versa-Spray II, Руководство пользователя по изделию

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Description
2-2
Part 107016-02
E 2016 Nordson Corporation
Theory of Operation
The Versa-Spray II control unit supplies low-voltage dc power to the voltage
multiplier. The multiplier generates the high voltage needed for powder
coating. The voltage generates a high-strength electrostatic field between
the spray gun and the grounded part in front of the spray gun. The
electrostatic field produces a corona discharge around the electrode. A
resistor between the spray gun’s multiplier and the electrode limits the
current output to safe levels.
Compressed air pumps the powder from the feed hopper, conveys it
through the feed hose to the spray gun, and propels it toward the
workpieces. As the powder particles are sprayed through the corona, they
pick up an electrostatic charge and are attracted to the workpieces.
The spray pattern is controlled by the shape of the nozzle used, the speed
of the powder-conveying air as it exits the nozzle, and the electrostatic field
generated between the electrode and the grounded workpiece. There are
no controls on the spray gun. The voltage controls and the powder pump
flow rate and atomizing air pressure regulators are housed in the IPS
control unit. A non-adjustable restrictor on the control unit rear panel
controls the gun air pressure. The pump and gun air start flowing when the
spray gun is triggered.
Options
Refer to the Options section for part numbers and illustrations of the
following optional equipment. Contact your Nordson representative for
more information about these options.
Nozzles and Deflectors
Standard spray guns are shipped with a Tivar flat-spray nozzle with 4-mm
wide slot. The following optional nozzles may be ordered separately:
S
Versa-Spray II conical nozzle, with 19-mm deflector
S
32- and 45-mm conical nozzles
S
14-, 16-, 19-, and 26-mm deflectors for conical nozzles
S
2.5-, 3-, 4-, and 6-mm Tivar and GFT (glass-filled PTFE) flat-spray
nozzles for organic powders
S
60 _ and 90 _ Cross-Cut nozzles
S
castle nozzle (six radial slots)
Lance Extensions
Lance extensions extend the length of the powder path to help spray
powder into recesses and interior corners. The extensions are equipped
with 26-mm conical nozzles and are available in 150-, 300-, and 450-mm
(6-, 12- and 18-in.) lengths.