Bruker BioSpin NMR BVT3200, Техническое руководство

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18 (55) BRUKER BIOSPIN Technical Manual Version 002
Exchanger presentation 2.2.1
Figure 2.1. Exchanger principle
Exchanger installation 2.2.2
1. Turn off the BSMS/2 power supply
2. Wait 2 minutes to permit the complete discharge of the output capacitor of the
heater electronics.
3. Unscrew and remove the BVT3200 from the crate.
4. Disconnect the inlet gas tube (see Figure 2.3. on page 20 ).
5. Hold the printer circuit (W1101455) over the main printed circuit, the big male
connector on the bottom side of the printed circuit must face the same size
female connector of on the top main printed circuit. The 4 plastic spacers must
be pushed carefully in the corresponding holes of the main board until they are
locked (see
Figure 2.4. on page 21 ).
6. Plug the gas tube as shown in picture 3 (see Figure 2.5. on page 21 ).
7. Insert the BVT3200 in the BSMS/2 crate.
8. Plug the LN
2
exchanger cable in the N
2
connector and insert the exchanger in
the LN
2
dewar.
9. Turn on the power supply of the BSMS/2.
Exchanger coil
Liquid nitrogen
Dewar tank
Refill level sensor
Empty level sensor
Valve block
Transfer line
N
2
gas in Cold N
2
out
BVT3200