7.5 Blow off valve cleaning
CAUTION:
Obey the safety regulations. Make sur
e that the main power source is disconnected
and all parts with electric supply are covered or closed. As there will be exposure to
the pumped substances, use appropriate PPE such as rubber gloves depending on
the substances that are present in the process.
Accessories required to clean the blow off valve:
▪ Spanner: 10 mm
▪ Lint free cloth for cleaning
▪ Water or isopropanol for cleaning
To clean the blow off valve:
1. Remove the 4 x M6 screws (1) of the blow off cover (2).
2. Pull the blow off cover (2) up gently.
3. Remove the valve ball (3).
4. Check all surfaces for contamination. If required, clean with water or
isopropanol.
5. Check the valve ball and all O-rings for damage or wear, replace if
necessary (EK6525317).
6. Reassemble the components (a missing valve ball will destroy the
pump).
7. Tighten the 4 x M10 screws with 8 Nm.
33
300766038_002_C3 - 09/2021 - © Leybold
Maintenance
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