Operating Manual
© Dürr Systems AG
EcoBell2 SL EC - Rotating Atomizer with External Charging
Operating principle
Document No.: MRA00001EN
Version:: 07
•
As of:: 01/2020
29 / 156
The speed of the atomizer is monitored by an optical waveguide. The
R/O converter converts the optical signals into electrical signals. It
directs electrical signals onwards to the control. The control monitors
the rotational speed and controls the speed controller.
To remove paint residue or dirt in and on the bell disk, the bell disk
must be cleaned with a rinsing agent. For the so-called "short-rinse”
cleaning, the rotational speed of the bell disk is reduced significantly.
Instead of the paint a rinsing agent flows into the bell disk.
The rinsing agent flows through bores in the back of the bell disk and
over the rear and outside of the bell disk to removes contaminants.
Atomizers with Recirculation
Fig. 4:
Atomizer schematic
WAR Shaft detent
KS/KSL1
Rinsing valve
HN1 Main needle valve
RF1 Valve for recirculation
The functionality is identical to atomizers without recirculation. In
addition, there is the disposal function of the unused paint and
detergent through the recirculation. The “RF1” valve switches the
strand for the recirculation.
Two component paint (2K paint)
2K paint is mixed from two components immediately before painting:
- Master lacquer
- Hardener
