33
VERSION 05/2019
ORDER NUMBER DOC2326960
PEM-X1 CG
7.4 OPTIMIZING THE POWDER CLOUD FOR COATING
Procedure:
1. Switch on the high-voltage generation and the powder feed.
Note:
To minimize wear on the wearing parts, the total air volume should be below 5 Nm³/h.
The atomizing air should be adjusted for the
– at jet nozzle to 0.1 Nm³/h
– round jet nozzle to > 0.2 Nm³/h
2. Adjust the powder quantity and the powder speed on a test piece.
7.4.1 RECOMMENDED SETTINGS FOR TOTAL AIR VOLUME
2x
2x
Tribo Corona
Ø
12
10
11
9
8
m /h
2.0
3
5.5
4.5
3.5
2.5
0 %
100 %
10
20
30
40
50
60
70
80
90
[µA] [Nm³/h] [%][kV]
90 80 2.0 50
50 30 1.5 40
60 40 1.2 40
P_01828
82 20 1.8 30
7.5 SWITCHING OFF THE CUP GUN
When releasing the trigger, the powder feed is stopped and the high voltage switched o.
To safely switch o the cup gun, e.g., for maintenance work, the control unit must be switched o.
7.5.1 PRESSURE RELIEF/WORK INTERRUPTION
Carry out the work steps as described in the "Pressure relief" chapter:
– if pressure relief is required,
– if the coating work is interrupted or stopped,
– before the device is cleaned on the outside, checked, or serviced,
– before the spray nozzle is installed or cleaned.
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