Bruker NMR 400 89 Ascend DNP User Manual

52
ZTKS0243 / Z31993 / 03
Troubleshooting
6.2.6 During Standard Operation
Continued on next page
Indicator Possible reason Solution By
The helium boil off
decreases to zero.
The atmospheric
pressure is
increasing.
Usual behavior.
Watch helium boil off daily.
Approved
Customer
Personnel
The helium flow
system is covered
with ice.
Contact Bruker Service imme-
diately! Do not try to remove
ice of the helium flow system!
Approved
Customer
Personnel
WARNING:
Cryogenic Agents
Quench
The helium flow
system or the
suspension tubes
are blocked with ice.
Blow in warm helium gas
carefully through an
applicable tube. Do not insert
it more than 600 mm from the
top of the helium turrets.
Bruker Service
The helium boil off is
too high.
The Helium Level
Sensor is
permanently on
(service mode) or
used often.
Switch off Helium Level
Sensor. Reduce frequency of
helium level measurement
(during measuring of the
helium level an amount of
helium boils off due to the
heat input of the Helium Level
Sensor).
Approved
Customer
Personnel
The atmospheric
pressure is
decreasing.
Usual behavior.
Watch helium boil off daily.
Approved
Customer
Personnel
If the problem is still not
solved, contact
Bruker Service.
Approved
Customer
Personnel

Bruker NMR 400 89 Ascend DNP Specifications

General

Brand	Bruker
Model	NMR 400 89 Ascend DNP
Category	Laboratory Equipment
Language	English