Index revision : A
14
7161
4. Operation
The NDT and HF carts mainly consist of a cart, an Inobox NF module, an NDT or HF pressure tank
depending on the version and an Inogun M gun.
The Inogun M gun allows to:
• spray powder paint on an earthed part.
• electrically charge the powder so that it adheres to the part to be powdered.
La charge électrique de la poudre est assurée par une électrode située en extrémité de buse.
The electric charge of the powder is ensured by an electrode located at the end of the nozzle.
This electrode is brought to high voltage by a high voltage unit integrated in the gun barrel. The
high-voltage unit is even supplied with low-voltage current by the "Inobox NF" control module.
The powder paint is deposited in the "NDT or HF" pressure tank:
• The injection air (check valve Item
4
) is used to pressurize the "NDT or HF" pressure tank.
• The powder contained in the tank (Item
2
) is fluidized at the fluidizing cup by means of air
(fitting on the fluidizing cup) passing through the porous cone (Item
6
).
• The electric vibrator (Item
3
) prevents powder accumulation in the porous cone.
• The air jet from the injector carries the powder towards the ejector tube.
•
In NDT version
: The shutter (Item 1) which more or less closes the powder ejector tube must
be set to "0" at start-up. The dry developer flow rate is adjusted using the injection air on
the Inobox control module or directly on the gun using the
+
and
-
keys. If the flow rate is
not sufficient when the injection parameter is at 100, it can be increased by opening the
shutter (Item 1) slightly using the lever (Item 7) located on the cover.
•
In the HF version
: On the Inobox control module, the injection setpoint must be set to 80
and the fluidisation to 43. The powder flow rate is adjusted using the lever (Item 7) on the
cover. This pilots the shutter (Item 1) which more or less closes the powder ejector tube.
The adjustment can be refined by changing the injection air set point on the Inobox
module or directly on the gun.
WARNING : In no case should the maximum filling height of the tank exceed a threshold of 10
cm below the end of the ejector tube.