Periodic Maintenance - A.R.I. D-040 L ARISENSE Installation Operation & Maintenance

36 IOM D-040 L ARISENSE

8. PERIODIC MAINTENANCE

Please note that the periodic maintenance of the air valve is an integral part of the proper pipeline maintenance
regime; it should be maintained at least once a year in accordance with the quality and composition of the fluid in the
system.
Important: Before performing any work on the air valve make sure that all workers on site are familiar with the safety
instructions chapter of this document and with all the relevant local and general safety instructions, standards and
work regulations.
Please note that maintaining the D-040L ARISENSE product consists of two separated procedures: maintaining the Air
Valve component and maintaining the Arisense component.
8.1. Releasing Pressure
• Shut the isolating valve located on the riser under the air valve
• Open the Ball Valve to release pressure and drain the air valve
• Important: Discard liquid in compliance with local regulations