Sames Mach-Jet User Manual page 20

The selected flow and U/I characteristic are memorized after:
• 1 seconds without modification of flow parameters or U/I characteristics.
• Change of screen.
• Trigger pressed.
Recommended settings
Use of a round spray nozzle
Application using a round spray nozzle improves charging of particles. It gives a better wraparound effect
and has better transfer efficiency. The spray is very homogenous both on complex and simple parts.
Use of fan spray nozzles
Application using a fan spray nozzle gives better covering and very high performance on flat parts.
Powder-covering of cavities is facilitated. The spray is very penetrating and homogenous both on
complex and simple parts.
Use of a current in excess of 30 µA may result in reduced transfer efficiency and electrode soiling.
Application in "over-powder-covering" mode adapted with round or fan spray nozzles
This application may require an adjustment of settings in the case of a very thick
first coat of powder with appearance of "eyes" and large craters. The current may be progressively
reduced (see voltage/current adjustments) until correct application is obtained (5µA minimum).
It is used for applying thick coats (> 100 µm) and for parts with low conductivity (glass, wood, etc.).
Metallic powder application adapted with round or fan spray nozzle
This application can be optimised if the powder is "coated," the voltage can be increased to improve
application performance.
To optimize the aspect of the part (tight, crater), the operator may have to increase the voltage up to
50kV and to decrease the current down to
Index revision : H
5µA.
20 6336