AVS 6/7 Maintenance Checklist

This Information Applies To: Agilent 5000 Series ICP-OES, AVS 6/7

Issue: The AVS 6 and AVS 7 require routine maintenance. This article provides a maintenance checklist.

Figure 1. 1 AVS 7

Warning: Chemical Hazard Always rinse all tubing and the valve before disconnecting the tubing from the switching valve to avoid contact with potentially dangerous chemicals. Appropriate personal protective equipment (PPE) should be worn when handling components contaminated with chemicals.

Caution: Any maintenance procedures not specifically mentioned should be performed by Agilent-trained, Agilent-qualified, or Agilent-authorized field service engineers.

Steps to Follow: Daily

• Clean the surface of the AVS accessories. Spills should be cleaned up immediately.
• Inspect the AVS tubing if present. Replace if necessary.
• Check that the sample loop is filling completely for the first few samples in the first run of the day.
• Check that there are no blockages in the uptake line, sample probe or connectors used on the uptake line.
• Check for blockages in the switching valve. If the loop still does not fill completely, the rotor may need to be replaced. Refer to Agilent ICP Expert Help and Learning Center 
• Check for increases in carry over in blanks. If carry over is increasing, the valve may require the rotor and/or stator to be cleaned or replaced. Refer Agilent ICP Expert Help and Learning Center 
• Flush the sample flow path to remove acidic solutions. At the end of each period of operation, always flush through the flow paths of the switching valve accessory with de-ionized water or an appropriate solvent for organic applications, such as isopropyl alcohol (propan-2-ol).

Learn how to effectively maintain and troubleshoot your AVS, see Agilent ICP Expert Help and Learning Center, e-learning course on Agilent University