Removing The Agilent Cold Probe From The Magnet - Agilent Technologies Cryogenic User Manual

Removing the Agilent Cold Probe from the Magnet

C A U T I O N
C A U T I O N
Cryogenic Systems Operation
The Agilent Cold Probe can be removed from the magnet
during any point in the cryogenic operation (provided
adequate VT gas flow is maintained). It is easier to manage
this operation if the cryogenic system is in the Idle state, as
VT gas is not required.
Remove any sample.
1
The Agilent Cold Probe is easier to remove from the
2
magnet if all connections are removed.
Disconnect the RF cables at the Agilent Cold Probe.
3
Disconnect the VT control cable from the heater knob
4
assembly.
Damage or contamination of the probe and CryoBay occurs if the
shutdown procedures are not followed. DO NOT disengage the
connection between the Agilent Cold Probe and CryoBay before the
entire system is at room temperature and pressure.
5 Verify that the cryogenic system state is IDLE and that
the Agilent Cold Probe and CCC temperatures are above
285 K.
6 Detach the Agilent Cold Probe from the CryoBay.
a Use the CryoBay software control (click the DETACH
button) to depressurize the Agilent Cold Probe cooling
loop.
Vent the cryogenic vacuum line.
b
c Disconnect the pneumatic line to the Agilent Cold
Probe vacuum valve by unscrewing it at the Agilent
Cold Probe vacuum valve.
Remove the flexible vacuum line from the Agilent Cold
d
Probe. Cap the line with a NW25 blanking plate. Click
Vacuum Purge under the advanced section of the
CryoBay controls popup window.
The vacuum clamp is magnetic. Use appropriate care when handling
it around the magnet.
2
Cryogenic Operation
35