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PSS - Portable Sample System - User Manual

4. DISCONNECTION - FOLLOW THIS PROCEDURE EXACTLY

Do not disconnect any connections whilst the Isolation Valve at

the gas/air source is still open. Doing so could cause serious

Do not turn off the Pressure Regulator or Needle Valve at this

4.1 First, TURN OFF the Isolation Valve fully and allow the system to fully

de-pressurise. Fig 20.

Fig 20.

Fully Closed – SHUT OFF

4.2 When the BALL in the flow indicator has fallen to "0" (ZERO litres per minute) as

shown in Fig 21 above, it is now safe to disconnect the sample line from the PSS and

the Isolation Valve.

4.3 Turn OFF the Pressure Regulator or Needle Valve.

See section 2.2 on Page 8-9, Fig 4 and Fig 5.

DO NOT

injury to the operator and persons near by.

DO NOT

Doing so will retain pressure in the sample line.

stage.

Fig 21.

BALL - ZERO FLOW