Correct powder gun setting

Top right orange ring = On / Off

Top left green LED = Activated (otherwise idle state)

powder coatin gun settingsgema optiflex settings


Quick keys

Generally with E=4 and % 60

3 quick keys for recipes (under the display)



  1. Flat parts

  2. Second layer

  3. Complicated shapes


Understanding parameters

  1. kV = high voltage in kiloVolt, static friction
  2. µA = spray current in microamps
  3. E = total air = 4.0 Nm 3 / h (h = hour)
  4. % = Powder output rate, for example 60% coating 40% air
  5. Recipe # 3


kV - µA Relation

Automatic regulation of the load to the distance workpiece


The Electron control recognises the distance or workpiece surface and regulates kV and µA at that moment. If the gun tip is too close, the µA is reduced and vice versa.


High kV if:

The higher the setting, the stronger the charge / adhesion.

flat parts and for the outside of box-like parts.

Low kV if:

the more detailed and complex the part (inner surface) to improve transfer efficiency so that it penetrates to the corners

(more powder particles to the part) e.g.

  • 50 kV with 20 to 40µA
  • 50 to 60 air mixture %.
  • increase the distance between the gun and the part
  • to obtain a very uniform coverage on flat surfaces




1. Flat parts

Flat or first layer

100 kV / 100 µA set.

Recommended set area is 50 to 80 kV with 70 to 100 µA

3. Complicated shapes

Square edged workpieces: (outer surface)

100 kV / 22 µA set.

Works well with 90 kV and 22-35 µA



2. Overcoating or second layer / two-coat process

100 kV / 10 µA set.



Coating Gun Setting values

Coating angular workpieces


  • kV 90 = 90,000 V

  • µA 35 = 3.5 x 10-5 A

  • E 4.0 Nm3/h or lt/min

  • % 60 = powder output

  • = powder coating in spray air
  • Recipe no. 3








2. Overcoating or second layer / two-coat process

100 kV / 10 µA set.

The range of values ​​for the second layer  fluctuates between

  • 100 kV with  10 µA and 
  • 80 kV with 10 µA
  • 50 kV with  20 µA, even up to
  • 20 kV with 30 µA


  1.     First coating, for example, you can leave the KV setting at 80 kV
  2.     second over-coating at 50 kV
  3.     third over-coating at 30 µA, each with a limit of 10 to 30 µA.


If you notice reionisation, i.e. the inner corners are already electrostatically charged so that no further penetration of the powder is possible, you can reduce the KV and leave the microampere setting at the lower end of the range of 10 to 30 µA microamps.

Two-shift process doesn't work? More Tips

Here are a few tips


Sometimes important rules are overlooked.
Possibly increase the % of powder used.

1. Use the earthing tester

First layer 4 millimeters thick? Create a bare metal point on the part so that it can be grounded

2. Check powder coating values on manufacturers box

3. Does the first coat have stains, problems with significant peeling or rust breakage?

4. Cleaning the product surface







Assembly instructions Electron Master M




spare parts assembly electron







Test experience powder coating guns ELECTRON


Powder coating of angular parts 

Result of the coating:

Bild1 2 3 4 5 6 7

Decide for yourself by the images of the section click


  • Excellent electrostatics

  • Even powder output


Efficient coating of the edges is always a challenge!






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