Bruker B-ACS 120, Installation Manual, Page: 33 / 167

Fine Adjustment Procedures
Installation Manual Version 001 BRUKER 33 (167)
An aid in making a final check of the Sample Changer.
As a check list for readjusting a running Sample Changer at regular inter-
vals.
Settings at the Magnet 5.3.1
Prepare the Sample Changer as Follows:
1. Switch the power off using the red security switch pictured in ( Figure 5.2. ).
2. Unplug the interface and the CPU boards ( Figure 5.1. ), and pull them half
ways out.
3. Pull the red security switch outwards and push the black start button to turn the
power back on.
Use the manual switches ( Figure 5.1. ) to perform the following
functions (the correct switches to use are in parenthesis):
4. Arm Forwards (ARSH) - until the pincher rests over the shim system.
5. Obtain a dummy sample with a spinner.
6. Open the Pincher (ZAUF)
7. Place the sample in the pincher and release the ZAUF switch, allowing the
pincher to close.
8. Lower the arm down (ARU) to over the shim system.
9. Turn the sample lift air on.
10. Open the pincher to release the sample (ZAUF).
11. Let the sample float for a few seconds to stabilize.
12. Close the pincher by releasing the ZAUF switch.
13. Turn the sample lift off.
The distance between the pincher and spinner should be 10 to 15 mm. If neces-
sary, adjust the arm’s height at the column (
Figure 5.2. ).
Without changing the sample position in the pincher, perform the
following steps:
14. Raise the arm slightly (ARO).
15. Check the concentricity of the spinner and the shim system. The concentricity
can be adjusted by turning the bars of the adjustable arm assemblies (loosen
the locking nuts (
Figure 4.1. , Figure 4.7. ), or by rotating the pneumatic arm.