Bruker RS - Mounting the Compressor

67
ZTKS0156 / Z31820 / Rev.: 03
Assembling
4.3.3.4 Mounting the Compressor
For further information refer to the supplied manual of the Cryogenic Refrigerator.
i
The compressor is very sensitive against deviation from the power supply of more than
5 %. The compressor is also very sensitive against deviation from the pressure inside
the helium circuit of more than 2 %. This can cause failure and damage.
Thus:
An applicable circuit breaker or fused disconnect switch must be provided on site to
prevent deviant voltage situation.
Check the compressor pressure while switched OFF.
The gauges should read:
- 50 Hz compressor: 14.5 +/- 0.34 bar (210 +/- 5 PSI)
- 60 Hz compressor: 14.5 +/- 0.34 bar (210 +/- 5 PSI)
If the pressure is too high, vent helium to the set value. If the pressure is too low, add
helium of high purity (He 5.0, 99.999%) to the set value. Contamination with other gases
in the helium cycle will severely degrade the cold head‘s function and it will require
factory servicing.
Figure 4.68: Mounting the Compressor - step 1
1. Loosen the fixing straps from the compres-
sor.
2. Remove the ring screws (1).
3. Use the supplied ramp (2) to roll out the
compressor.
WARNING: Heavy Weights