00196101-04_Serviceanleitung Vakuumtest 08-2018_D-E.pdf - 第96页

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4.2.6 Vacuum tests on C&P20p / C&P20m2 heads (Venturi)
In order to provide guidance when troubleshooting, a number of different modifications were
made to a CP20p head and vacuum tests were then carried out with type 4235 open nozzles
(calibration nozzles) and type 4069 closed (red) nozzles, and the results were compared.
For the sake of clarity, only the first 8 measurements that were taken are shown
here.
The modifications were always carried out on segment 1.
4.2.6.1 Measurements without any modifications (NOMINAL values)
a.) With nozzles 4235
NOMINAL
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b.) With closed nozzles 4069
NOMINAL
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4.2.6.2 Overview of possible causes and effects