Spectrometer modifications
CryoProbe Installation BRUKER 23 (93)
Cranked magnet pillar braces (optional) 3.8.2
Special cranked bars are necessary only for B
RUKER/Spectrospin 500 MHz and
600 MHz magnets if they rest on an anti-vibration stand with horizontal pillar brac-
es. The cranks enlarge the vertical gap between the bars such that a CryoProbe
can be introduced.
WARNING: Do not remove any pillar brace before the magnet stand was locked!
Do not remove both braces at once because the magnet stand will be less stable
then and a misalignment of the magnet stand can result!
Necessary parts:
1 cranked upper pillar brace (Z55762)
1 cranked lower pillar brace (500 MHz: Z55761, 600 MHz: Z55763)
4M8⌠25 Allen key screws, non-magnetic (14460 each), for upper brace
(Use the existing four Allen key screws for the lower pillar brace)
1 6 mm Allen key wrench, non-magnetic
9M8⌠35 Allen key screws, non-magn. (28059 each), came with magnet
If the magnet stand height needs to be adjusted:
1 open end wrench 24 mm (500 MHz) or 30 mm (600 MHz) (e.g. Z56883)
Table 3.3. Mount the cranked magnet pillar braces (optional)
step action
s.1 Check the gap between the lower magnet pillar brace and the floor: it
must be at least 95 mm.
If necessary, adjust the height of the magnet’s feet at their thread right
above the floor. For this, remove the inside covers from the pillars. Lock
the two nuts against each other with a non-magnetic open end wrench.
Use the nuts to turn the threaded bar itself. See also the drawing
Mechanical Levelling of the Anti Vibration Stand in the magnet manual.
s.2 Put 9 fixing screws for the magnet stand into place (delivered with
the magnet, M8⌠35 Allen key, non-magnetic), three for each damper:
insert them from the top and tighten them firmly. If the holes are not
aligned you may move the anti-vibration column with some force. Do not
manipulate the three large screws in each center.
s.3 Switch O
FF the magnet’s air suspension.
s.4 WARNING: Do not remove a brace if the magnet is still suspended or if
the 9 fixing screws are not in place!
Replace one of the two front braces while the other brace is still in
place. The lower brace has the larger kink and will almost touch the
floor. Orient the braces the same way as the original braces were.
s.5 Replace the second brace only after the first brace has been tightened.
s.6 Remove the 9 fixing screws from the magnet stand.
s.7 Do not switch O
N the magnet’s air suspension yet but wait until the Cry-
oProbe is mounted.
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