57
VERSION 01/2018
ORDER NUMBER DOC 2385674
TOPFINISH Bell 1S
9.3
ATOMIZATION
Functional fault
Cause
Remedy
Atomization not fine
enough
– No high voltage
– Activate high voltage.
– Knurl of the bell not optimal
– Use different knurling.
– Speed of the bell plate not
sufficient
– Increase speed of the bell.
– Product flow rate too high
– Reduce flow rate.
– Shaping air set incorrectly
– Adjust shaping air accordingly.
– Air in the product line
– Check product line for air inclusions.
– Damages to the bell edge
– Replace bell plate.
– Bell plate is clogged
– Clean bell plate.
Atomized lacquer product
backfires and coats
the high-speed rotary
atomizer.
– Steering airs SA1 and SA2 are
set too low.
– Minimum pressure of steering airs SA1
and SA2 0.04 MPa; 0.4 bar; 5.80 psi
– Insufficient grounding of work
piece
– Check grounding connection.
9.4
SPRAY PATTERN GEOMETRY
Functional fault
Cause
Remedy
Spray pattern too wide
– Air control ring dirty
– Clean air control ring.
– Steering airs SA1 and SA2 are
set too low.
– Increase values for steering airs.
– Bell plate too large
– Order/use smaller bell plate.
Note that the air control ring has to be
adapted accordingly.
– Speed of the bell plate too
small
– Increase speed of the bell plate.
– High-voltage too low or poor
grounding of the work piece
– Increase high-voltage or optimize
grounding.
Spray pattern too narrow
– Steering airs SA1 and SA2 are
set too high.
– Reduce values for steering airs.
– Bell plate too small
– Order and/or use bigger bell plate.
– Note that the air control ring has to be
adapted accordingly.
– Speed of the bell plate too high – Reduce speed of the bell plate.
– High-voltage set too high
– Reduce high-voltage.
