Bruker NMR 400 89 Ascend DNP User Manual

53
ZTKS0243 / Z31993 / 03
Troubleshooting
Continued from page before
Indicator Possible reason Solution By
Continue of:
The helium boil off is
too high.
Vacuum reduced. Rebuild vacuum, see chapter
”Rebuilding Vacuum” on
page 52
Bruker Service
The radiation baffles
are not inserted in
the current lead
turret.
Insert the radiation baffles into
the current lead turret.
Bruker Service
Quench. Loss of supercon-
ductivity.
See chapter ”After a
Quench” on page 55
Contact Bruker Service
immediately!
Approved
Customer
Personnel
Cold spots within the
RT bore.
Alignment of the
vessels not correct.
Contact Bruker Service. Approved
Customer
Personnel
RT vessel is wet and
cold.
Vacuum reduced. Contact Bruker Service
immediately!
Approved
Customer
Personnel
Not correct helium
level warning out of
MICS.
Helium Level Sensor
defective.
Contact Bruker Service
immediately!
Approved
Customer
Personnel
Helium level at
constant level, no
change during days.
Helium Level Sensor
defective.
Contact Bruker Service
immediately!
Approved
Customer
Personnel
WARNING:
Low Temperature
Not correct helium
level warning out of
MICS.
Helium Level Sensor
defective.
Replace Helium Level Sensor
(see chapter ”Replacement
of the Helium Level Sensor”
on page 87)
Bruker Service
Helium level at
constant level, no
change during days.
Helium Level Sensor
defective.
Replace Helium Level Sensor
(see chapter ”Replacement
of the Helium Level Sensor”
on page 87)
Bruker Service

Bruker NMR 400 89 Ascend DNP Specifications

General

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