Hardware manual

4-32 Agilent 7500 Series ICP-MS Hardware Manual
4Maintenance
To solve memory problems, complete the following steps:
1 Disconnect the nebulizer and the end cap.
The sample uptake tube can remain on the nebulizer. Refer to the
“Disconnecting the Babington Nebulizer from the End Cap”
2 Ultrasonic the nebulizer in 5% Nitric Acid.
Wear safety glasses and gloves when working with acid. If the memory
problem persists, disconnect the sample uptake tube referring to
“Disconnecting the Babington Nebulizer from the End Cap”
3 Ultrasonic the sample tube in 5% Nitric Acid.
Wear safety glasses and gloves when working with acid.
4 Check the O- rings.
Check the O- rings, which are located on the nebulizer and in the connector
between the nebulizer and carrier gas tube, and replace them if they are
cracked or too loose to seal properly. Wash the O- rings by immersing them
in pure water and dry them gently with a clean laboratory tissue.
If necessary, also replace the end cap O- ring, which is located inside the
nebulizer end cap, and the ferrules, which are located in the connector
between the nebulizer and carrier gas tube.
NOTE
If the gas tubing and sample introduction around the nebulizer leaky even a small amount, it
causes a sharp signal fluctuation. To prevent leaks, be especially careful not to damage the
O-ring.