Bruker BCU05 User manual

BRUKER
Version
VTU
Technical Manual
BCU05
006

The information in this manual may be altered without notice.
BRUKER accepts no responsibility for actions taken as a result
of use of this manual. BRUKER accepts no liability for any mis-
takes contained in the manual, leading to coincidental damage,
whether during installation or operation of the instrument. Un-
authorised reproduction of manual contents, without written
permission from the publishers, or translation into another lan-
guage, either in full or in part, is forbidden.
This manual was written by
Patrice BILLMANN
© April 28, 2000: Bruker SA
Wissembourg, France
Manual P/N: Z31126
DWG-Nr: 803006

BCU05 Version 006 BRUKER 3 (41)
Contents
Contents ............................................................... 3
Index ..................................................................... 5
1 BCU05 HR applications .......................................... 7
1.1 Technical specifications ....................................................... 8
1.2 Identification of parts ........................................................... 9
1.3 Installation ......................................................................... 10
1.4 Operating notes ................................................................. 14
1.5 Service information and maintenance ................................ 15
1.6 BCU05LT informations ....................................................... 16
Technical specifications .................................................16
Identifications of parts ....................................................16
Installation .....................................................................16
1.7 Troubleshooting guide ........................................................ 17
2 BCU05 HR-MAS applications................................ 19
2.1 Technical specifications ..................................................... 19
2.2 Identification of parts ......................................................... 20
2.3 Installation ......................................................................... 20
3 BCU05 HR to BCU05 HR-MAS .............................. 23
3.1 How to change from BCU05HR to HR-MAS ....................... 23
4 BCU05 HR-MAS to BCU05 HR .............................. 25
4.1 How to change from BCU05HR-MAS to HR ....................... 25
4.2 How to install a SENSE OF BEARING kit ........................... 26
5 Schematics ........................................................... 27
Figures ................................................................ 37
Tables .................................................................. 39

4 (41) BRUKER BCU05 Version 006
Contents

BCU05 Version 006 BRUKER 5 (41)
Index
W
W3M151933........................................................................................................ 31
W4D125211 A..................................................................................................... 33
W4M123713 A .................................................................................................... 35
W4M123717 A .................................................................................................... 30
W4S125315 A..................................................................................................... 34
W4S125337 A..................................................................................................... 32
W4S22941 B....................................................................................................... 29
W4S23389 A....................................................................................................... 28

6 (41) BRUKER BCU05 Version 006
Index

BCU05 Version 006 BRUKER 7 (41)
1
BCU05 HR
applications 1
This unit contains ozone friendly coolant R404A.
The unit may however only be discarted by authorized personnel.

8 (41) BRUKER BCU05 Version 006
BCU05 HR applications
Technical specifications 1.1
Sample temperature range -5°C to + 50°C
Input :
Taken from BVT3X00
• Dry air (dew point < - 50°C) or dry N2
• Pressure 0,3 bar
• Flow Rate 300-2000 l/h (Probe dependant)
Ambient temperature range 20 to 32 °C
Mains connection 1x 208/220/240 Vac - 50/60 Hz - 450 Watts
Warm-up time 1/2 hour
Case dimensions 550 x 500 x 490 mm
Trunk lenght
• BCU05 3 meters
• BCU05 LT 4 meters
Weight
• BCU05 35 kg
• BCU05 LT 46 kg
Gas content 0,4 kg Freon R404A
Output
Cooled air or N2with temperature reduced by approx. 65°C.
Stability of output temperature
± 1°C under perfectly constant conditions of mains voltage, room temperature, air
flow, etc.
Operating principle
The BCU05 is a cooling unit that reduces the temperature of an air input by typi-
cally 65°C.
Freon gas is circulating around an external heat exchanger. The system is com-
pletely sealed. The unit is designed to be operated in conjunction with the or
BVT3X00. The VTU provides the gas input for the BCU05 as well as controlling
the sample temperature. When operated in conjunction with a BTO2000, sample
temperature stability of ± 0.01°C/°C can be achieved (with BVT3X00).

BCU05 Version 006 BRUKER 9 (41)
Identification of parts
Identification of parts 1.2
see "BCU05 with BST Block diagram" on page 28
•Mains breaker with power control light P/N 75370
•Heat exchanger
•Heat exchanger support stand P/N W1208509
Following parts are supplied :
•BCU05 cooling unit with heat exchanger
•Heat exchanger support stand
•Plastic input air hose
•Two half shells for heater exchanger clamping,
see "Mounting the support clamp" on page 10.

10 (41) BRUKER BCU05 Version 006
BCU05 HR applications
Installation 1.3
See "BCU05 with BST Block diagram" on page 28
To install the system, proceed as follows :
1. Attach the support clamp (supplied with magnet) to the magnet. Insert the two
half shells between clamp and exchanger.
Figure 1.1. Mounting the support clamp
Mounting of the support clamp
diffrent mounting possibilities
probe
support clamp
heat exchanger
cryostat
cryostat
cryostat
heat exchanger
support clamp
probe
probe
heat exchanger
support clamp of the support clamp assembly
Z4C-29661
Magnex magnet / Oxford systems
D22X/D26X D1XX/D2XX
shell

BCU05 Version 006 BRUKER 11 (41)
Installation
2. Place the cooling unit at approximately 2 m from the magnet. Open the unit
and carefully unroll the heat exchanger.
Figure 1.2. Heat exchanger (M151460A)
1. Put some vacuum grease on glass ball-joint before clamping the heat ex-
changer. Take care to keep the right distance between the probe glass ball-
joint and the support clamp. Connect the air hose to the three way valve ex-
haust.
Figure 1.3. Glass ball joint (M151454B)
2. Take the heat exchanger support stand and position it between the magnet
and the unit. Adjust the height.

12 (41) BRUKER BCU05 Version 006
BCU05 HR applications
Figure 1.4. Heat Exchanger support stand (M151454B)
3. Position the cooling unit as far as possible from the magnet so as to minimise
the effect of the magnet stray field.
valve
three way
main switch
support stand
BCU 05
heat exchanger

BCU05 Version 006 BRUKER 13 (41)
Installation
Figure 1.5. BCU05 connections
4. Connect the nitrogen (or dry air) input from the BVT.
5. Set the air flow rate to approximately 500 l/h at the BVT. Check that the sample
spinning is not affected. If yes, decrease the air flow rate.
Note: Please install the unit only on a hard floor.
6. If the BCU05 is controlled by a BVT3000/3300, connect the BVT plug to the
connector called «BCU05» located on the BVT's front panel.
7. In stand alone mode, don't connect the BVT plug and close the switch located
behind the rear grill.
Figure 1.6. Rear grill
filter
heat exchanger
dried air or N2 in
mains BVT connector
switch serial number plate
rear grill

14 (41) BRUKER BCU05 Version 006
BCU05 HR applications
Operating notes 1.4
1. The BCU05 is be powered by the BVT3000/3300 and is designed for 24 hours
a day operation as long as the probe is not exchanged. If the probe is to be ex-
changed then switch off the unit and wait for 10 minutes before handling. The
exchanger tip must be de-iced before connecting on probe. Put vacuum
grease on glass ball joint.
2. Never operate the unit without first gas flowing through the heat exchanger.
Otherwise ice may form and clog the heat exchanger. The input gas should be
dry, oilless and dust free if not serious damage to the probe may result.
3. The BCU05 is designed to take its gas input from the BVT2000, or BVT3000/
3300.
4. Output:
The temperature of the output gas is not directly controllable. Its tempera-
ture will depend on:
a) The input gas temperature
b) The ambient room temperature
c) The throughput i.e. flow rate.
A variation of one or more of the parameters above can bring along a varia-
tion of the output temperature.
5. Sample temperature range: The BCU05 guarantees to cool the sample within
the magnet to at least -5°C for a room temperature of 25°C. Slightly lower tem-
peratures may be possible depending upon the type of probe, input air temper-
ature, room temperature.
6. Location: The BCU05 is designed to be positioned at approximately 2m from
the magnet probe.
7. Dew point : for an input air and room temperature of 20°C the output tempera-
ture will be approximately -45°C. To avoid freezing/ice formation the input air
dew point should be at least -50°C.

BCU05 Version 006 BRUKER 15 (41)
Service information and maintenance
Service information and maintenance 1.5
The BCU05 is not designed to be serviced in the field. Replacing the compressor,
heat exchanger etc. must be carried out in the factory. The only servicing that
should be carried out at the site is replacing the mains breaker.
The unit may however only be discarded by authorized personnel.
To replace mains breaker
Type: ETA F 551 Rated 2A
1. Switch off unit. Disconnect mains plug from supply.
2. Remove top cover plate by unscrewing the 4 screws.
3. Remove the 2 sets of LIVE / NEUTRAL cables on breaker.
4. Pull out the breaker and replace.
5. Reconnect cables.
Maintenance
Every 6 months :
1. Remove the air vent grill and clean the air filter with compressed air.
2. Stop the BCU05 for a few hours. Switch off and disconnect the unit from probe.
Blow dry air through the unit without cooling for ten minutes to remove the
moisture from the heat exchanger.
Figure 1.7. Filter removing (M151455A)
filter
grill
filter housing

16 (41) BRUKER BCU05 Version 006
BCU05 HR applications
BCU05LT informations 1.6
Technical specifications 1.6.1
This version of BCU05 with a longer heat exchanger (LT= 4m) is used with the
largest magnets 750-800 MHz. It has the same technical specifications as the
standard BCU05 unit.
Identifications of parts 1.6.2
For part identification see "BCU05LT in operation on 750/800 MHz" on page
31.
Following parts are supplied :
•BCU05LT with heat exchanger
•Tripod
•two support stands.
•Plastic input gas hose.
Installation 1.6.3
To install the system, proceed as follows.
1. Place the cooling unit approximatly 3 meters away from the magnet. Open the
unit and unroll carefully the heat exchanger. Open the 2 screws on the cover of
the tripod.
2. Fill the tripod with sand and close it.
3. Take the support stands and position as see "BCU05LT in operation on 750/
800 MHz" on page 31 on 750/800 MHz spectrometer. Take care to keep the
right distance between the probe glass ball joint and the clamping support
stand.
Figure 1.8. Heat Exchanger mounting for BCU05LT
4. Position the cooling unit as far as possible from the magnet so as to minimize
influence of stray field.
heat exchanger
glass ball
probe

BCU05 Version 006 BRUKER 17 (41)
Troubleshooting guide
Troubleshooting guide 1.7
BCU05 does not cool
•Check the mains voltage
•Check if compressor is running (remove the cover, check the compressor and
the fan).
BCU05 does not cool correctly
The heat exchanger may be clogged with ice:
•Switch off the BCU05 unit and wait for a period of 12 hours.
•Disconnect the exchanger from the probe.
•Put the exchanger on the floor.
•Take the thermocouple mounted in the probe and insert it approximately 5 cm
into the output of the heat exchanger.
•Start the BCU05 unit again and control the temperature. It should be with
500 l/h gas flow lower than -22°C.
If you need more information or if you have some questions you can contact the
author by sending us an E-Mail at the following address :
[e-mail]

18 (41) BRUKER BCU05 Version 006
BCU05 HR applications

BCU05 Version 006 BRUKER 19 (41)
2
BCU05 HR-MAS
applications 2
Technical specifications 2.1
Sample temperature range -15°C to + 50°C
Input :
Taken from BV3X00
• Dry air (dew point < - 50°C) or dry N2
• Pressure 5 bar
• Flow Rate 300-2500 l/h (Probe dependant)
Ambient temperature range 20 to 32 °C
Mains connection 1x 208/220/240 Vac - 50/60 Hz - 450 Watts
Warm-up time 1/2 hour
Case dimensions 550 x 500 x 490 mm
Trunk lenght
• BCU05 3 meters
• BCU05 LT 4meters
Weight
• BCU05 HR-MAS 40 kg
• BCU05 LT HR-MAS 46 kg
Gas content 0,4 kg Freon R404A
Output
Cooled air or N2with temperature reduced by approx. 65°C.
Stability of output temperature
± 1°C under perfectly constant conditions of mains voltage, room temperature, air
flow, etc.
Operating principle
The BCU05 is a cooling unit that reduces the temperature of an air input by typi-
cally 65°C.
Freon gas is circulating around an external heat exchanger within a completely
sealed system. The unit is designed to be operated in conjunction with the
BVTXX00. The VTU provides the gas input for the BCU05 as well as controlling
the sample temperature. When operated in conjunction with a BTO2000, sample
temperature stability of ± 0.01°C/°C can be achieved (with BVT3X00).

20 (41) BRUKER BCU05 Version 006
BCU05 HR-MAS applications
Identification of parts 2.2
•Mains breaker with power control light P/N 75370
•Heat exchanger
•Heat exchanger support stand P/N W1208509
Following parts are supplied :
•BCU05 cooling unit with heat exchanger
•Heat exchanger support stand
•Plastic input air hoses
•Two half shells for heater exchanger clamping,
see "Mounting the support clamp" on page 10
Installation 2.3
See Installation BCU05 HR "Installation" on page 10
Put some vacuum grease on glass ball-joint before clamping the heat exchanger.
Take care to keep the right distance between the probe glass ball-joint and the
support clamp. Connect the air hoses to the three Mas Remote Control unit !
Figure 2.1. Glass ball joint (W4M123713A)
1. Take the heat exchanger support stand and position it between the magnet
and the unit. Adjust the height.
heat exchanger
glass ball joint
probe