Rev. 00 04/19
64
Operation
OptiCenter OC06
Delayed fresh powder request
In coating mode with powder recovery (spray), fresh powder is also fed
into the OptiSpeeder after the set time has elapsed in addition to the
recovery powder until the powder level set at parameter 3440 is reached
again.
To prevent the powder collection unit (under the cyclone) from overfilling,
the fresh powder supply is delayed by parameter 3460. This ensures that
priority is given to recovering the powder from the powder collection unit
before fresh powder is introduced into the powder cycle. After the delay,
the OptiSpeeder is simultaneously filled with the fresh and recovery
powder until the powder level is reached.
The coating is correctly set when the powder collection unit
(under the cyclone) does not overfill.
– This must be set with parameter 3460.
Fig. 56:
(See chapter "Parameter description" on page 54.)
Ratio of fresh powder / recovery powder
For large production batches of the same color, metallic or effect powders
can cause color changes if less than 50% of the applied powder adheres
to the object.
The proportion of recovered powder (RP) increases steadily, the powder
circulates several times in the powder circuit and fine particles are
removed by the separation system.
The fine particles are known to have an influence on the color tone. To
obtain the color tone, a certain amount of recovered (aged) powder must
be removed from the circuit.
A controlled addition of fresh powder (FP) stabilizes the ratio between the
RP and FP. A stable ratio ensures good coating results with large
production batches.
Summary of Contents for OptiCenter OC06
Page 10: ...Rev 00 04 19 10 About these instructions OptiCenter OC06 ...
Page 90: ...Rev 00 04 19 90 Maintenance Repairs OptiCenter OC06 ...
Page 98: ...Rev 00 04 19 98 Decommissioning Storage OptiCenter OC06 ...
Page 124: ......
Page 126: ...Rev 00 ...
