Bruker RS - Page 104

104
ZTKS0156 / Z31820 / Rev.: 03
Troubleshooting
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Indicator Possible reason Solution By
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Compressor is
operating, but no
pressure fluctuation
visible (needles at
the pressure gauges
not oscillating).
Aeroquip® connec-
tors of the flex lines
tightened not cor-
rectly at the rotary
valve.
Tighten the Aeroquip®
connectors correctly.
Bruker Service
High and low pres-
sure helium flex line
reversed at the
rotary valve.
Check if the flex lines are
mounted correctly at the
rotary valve respecting high
and low pressure port.
Bruker Service
Rotary valve is
defective.
If possible, check if the rotary
valve sound has changed
since installation.
If the typical sound is missing,
the rotary valve might be
defective and has to be
exchanged.
Replace the rotary valve.
Bruker Service
Compressor is
operating, pressure
fluctuation visible at
the pressure
gauges, extinguish
short after start.
Water chiller not
running.
Check possible reasons why
the water cooler is not
running. Start the water
cooler.
Approved
Customer
Personnel
Cooling water flow to
low.
Check cooling water supply is
sufficient (refer to supplied
manual of the Cryogenic
Refrigerator).
Approved
Customer
Personnel
Cooling water flow
too low due to icing,
blockage, fouling or
leak in the cooling
water lines.
Search possible reason for
the disturbance.
Check the cooling water sup-
ply is as specified in the sup-
plied manual of the Cryogenic
Refrigerator and the manual
of the water chiller.
Approved
Customer
Personnel
Not correct environ-
mental temperature
(too high or too low).
Check the environmental tem-
perature is as specified.
Approved
Customer
Personnel
Not correct water
temperature (to high
or to low).
Check the cooling water tem-
perature is as specified.
Approved
Customer
Personnel