00196101-04_Serviceanleitung Vakuumtest 08-2018_D-E - 第82页
Service manual vacuum check with closed nozzles Page 82 fr om 136 4.2.5 Vacuum tests on C& P20 / C & P20 a / C & P20m heads (Ven turi) In order t o provide guidanc e when trou bleshoot ing, a number of diff e…
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The values for the holding circuit must lie between
-700 mbar and -950 mbar
(depending on the height above sea level: the higher the location, the lower the values).
Comparison: Measurement using type 1235 nozzles (calibration nozzles).
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4.2.5 Vacuum tests on C&P20 / C&P20a / C&P20m heads (Venturi)
In order to provide guidance when troubleshooting, a number of different modifications were
made to a CP20a head and vacuum tests were then carried out with type 1235 open nozzles
(calibration nozzles) and type 1069 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.
4.2.5.1 Measurements without any modifications (NOMINAL values)
a.) With type 1235 nozzles
NOMINAL
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b.) With type 1069 closed (red) nozzles
NOMINAL