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AS 100 maintenance

Replacement of needles and valve rotor seal

Replacement of AS 100 needle has been described in the user manual 181_0010. In the preventive maintenance guide 181_0026 the needle and valve rotor seal replacement are described. In addition, this tutorial contains QuickTime movies that show the procedure in more detail. Before using this material read the instructions and warnings in the user manual.

The movies in this tutorial require a QuickTime plugin, if not installed you will be prompted to download it from the Apple website. Depending on your connection speed loading movies can take a moment or two...


Sample needle and valve.

Needle assembly: 1. Nut and ferrule, 2. Needle tubing, 3. Needle connection nut, 4. Standard sample needle, 5. Needle holder, 6. Air outlet nut, 7. Pre-puncturing needle, 8. Sensor (detects tray height, and missing vials). Numbers 1, 2, 3, 4, and 6 constitute the sample needle.