PFT PFT G4, Руководство по эксплуатации, Страница: 15 / 68

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Before and after the first spraying, with a conveying hose length of 10 m, new
pumping components should attain a conveying pressure of approx. 30 bar and
maintain a back pressure of approx. 12 bar. To control the back pressure, we
recommend in accordance with the existing safety regulations that the PFT pressure
tester with coupling and outlet tap (art no. 20 21 68 02) be used.
When fitting/removing pump parts, care must be taken that:
- the main switch is switched off during assembly work.
It must also be noted that:
-
a new stator and a new rotor must "run in", and reliable pressure readings can
only be made after one spray operation.
- pump parts that neither attain the necessary conveying pressure nor maintain
the required back pressure are worn and must be replaced.
When using pumps that can be adjusted, care must be taken that
-
the main switch is switched off,
- the stator protrudes evenly at the ends,
- the pin (1) is between the clamping jaws so that the stator can no longer
move,
- all screws on the clamp are tightened evenly,
- the tie rod screws of rubber stators are not tightened too far, and the stator
ends in the flanges are pressed firmly and centrally in place,
- a new stator and a new rotor must "run in", and reliable pressure readings can
only be made after one spray operation,
- pump parts which, in spite of adjustment, neither attain the necessary
conveying pressure nor maintain the required back pressure are worn and
must be replaced.