118 FLOWSIC500 · Operating Instructions · 8025733/1GMJ/V4-2/2022-07 · © SICK Engineering GmbH
Maintenance and meter exchange
Subject to change without notice
7.4.8 Removing the installed gas flow meter
1 Ensure safe conditions.
WARNING: Hazards due to combustible gases or high pressure
Natural gas under line pressure flows through the gas flow meter during running
operation. The gas flow meter may only be exchanged when the equipment is at
a standstill.
Before commencing installation work:
▸
Ensure the pipeline is free from pressure and free from combustible gases.
▸
Purge the pipeline with inert gas if necessary.
▸
Observe the safety information in §1.1 and §3.1.
WARNING: Hazard due to the gas flow meter falling down
▸
Secure the gas flow meter before loosening the screw fitting, e.g. by
supporting the gas flow meter or with the help of another person holding the
gas flow meter.
2 Unscrew the closure cap.
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