42 (93) BRUKER CryoProbe Installation
Initial setup
z.4 Make sure that the pipe interfaces are clean and screw the He Regula-
tor tightly to the He steel-cylinder.
z.5 The He Regulator valve must be completely closed.
z.6 Open the He Regulator by about one turn and connect the dump tool to
the other end of the He Hose.
z.7 Open the He steel-cylinder main valve. The primary pressure gauge
will rise up to 200 bar and the sound of escaping He from the dump tool
will become audible.
z.8 Close the He Regulator and disconnect the dump tool.
IMPORTANT: The He Regulator and Hose have to be flushed to keep
impurities out of the He steel-cylinder.
z.9 1st leak test:
mark the actual pressure on the primary gauge and close
the He steel-cylinder main valve.
Figure 3.12. Attaching the He Hose
z.12
z.4
z.10
z.3
z.5
z.9
z.11
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