37
VERSION 01/2021
ORDER NUMBER DOC2422004
TOPFINISH Bell 1S ECH
Grounding schema (example):
Cable cross sections
Pump
4 mm², AWG 11
Paint tank
4 mm², AWG 11
Conveyor
16 mm², AWG 5
Booth
16 mm², AWG 5
Spraying stand 16 mm², AWG 5
B_07457
11
10
9
8
7
6
5
4
3
2
1
R max. < 1M
Ω
Designation
Designation
1 Grounding cable
7 Signal ground
2 Control unit
8 Floor, static dissipative
3 Conveyor
9 Paint tank
4 High-speed rotary atomizer
10 Pump
5 Work piece
11 Signal ground
6 Spraying stand
-- --
6.9
COMMISSIONING
6.9.1 PRESETTINGS
– Limit high voltage to a max. of 80 kV
– Limit current to approx. 500 µA
– Ideal operation with 70 kV and 350 µA, to minimize the wear of the air deflector
ring and the electrode fingers.
– Switching the high voltage off during coating pauses in order to avoid unnecessary
stress on the electrode fingers and air deflector ring.
– Ensure good grounding of the work pieces
– Ensure high air humidity in the booth (> 60%)
– Select the smallest possible bell plate
– When using aggressive water-based lacquers, use a titanium bell plate
– Regularly clean the air deflector ring and the fingers to minimize the discharge
currents
Lacquer type
Speed of bell plates
Overlap
Distance to work piece
Water-based paint, primer
30,000-45,000 rpm
50%
200–250 mm
Water-based paint, basic paint
30,000-45,000 rpm
60%
180–250 mm
Solvent-based paint, primer
45,000 rpm
50%
200–250 mm
Solvent-based lacquer, Clear Coat 25,000-45,000 rpm
60%
190–250 mm
Solvent-based lacquer, clear
lacquer
45,000 rpm
60%
180–250 mm
For further information on the settings, see the Controller operating manual (order no. 2374275).
