Preparations for commissioning

Purge the armature prior to initial commissioning! It is imperative to adhere to the direction of the gas flow when doing this! You must not purge counter to the usual direction of flow (from the tapping point to the process gas source), as this can flush debris resulting from the installation work, for example, back into the armature.

The connecting threads and connecting surfaces of the gas source valves as well as the sealing rings must be checked to ensure that they are in perfect condition.

Always turn shut-off valves as far as the stop when opening or closing them.

Make sure that:

• the fittings are marked for the corresponding gas type,
• all protective caps have been removed,
• the assembly has been correctly carried out and a leak test has been performed,
• all valves are closed (the red marking is visible in the handwheel window)
• the pressure regulator has been depressurised (if possible),
• the purge gas supply (only standard for SP4 and SP6) is in operation,
• the on-site exhaust gas system is functional at all times and is in operation,
• all shut-off armatures are checked for loose connections and
• the controller is in operation.