Bruker CryoProbe System User Manual

64 (93) BRUKER CryoProbe Installation
Troubleshooting
Charge He Compressor
Usually, the CryoProbe System is charged with He at the CryoCooling unit and
not at the He Compressor. If there’s too little pressure in the He Compressor, i.e.
its gauge reads less than 17.5 bar, it is recharged automatically upon cool-down
after the preparations have been finished.
He Compressor stops
after several minutes of
operation and D
RIVE
goes O
FF.
1. Abnormal operating He pressure.
2. air-cooled only: Insufficient cool-
ing of compressor operating
room triggers thermal protection.
3. air-cooled only: Air flow for He
Compressor is blocked.
4. air-cooled only: Air flow through
the He Compressor unit is
blocked by dirty fin.
5. air-cooled only: Fan does not
operate.
6. water-cooled only: Insufficient or
no water cooling triggers the ther-
mal protection.
7. Inadequate voltage at AC mains
source.
8. Excessive current of the He Com-
pressor capsule.
1. Adjust He supply pressure or
charge He as required.
2. Check room temperature and
cooling system of compressor
operating room.
3. Check the space around the He
Compressor.
4. Clean the heat exchanger fin.
5. Check fuses (see "Fuses and
reset buttons" on page 59), if
OK then replace fan.
6. Confirm that cooling water is flow-
ing at the proper flow rate.
7. Check mains voltage selector
(European version P/N O00247
only), mains wiring, fuses, circuit
breakers, and phasing.
8. Measure the current of the He
Compressor. If a high and sus-
tained motor current is meas-
ured, replace the He Compressor
unit.
He Compressor has shut
down but the switches
remain O
N.
1. No mains power.
2. Abnormal operating He pressure.
3. Abnormal He pressure due to gas
leak.
4. Abnormally high discharge He
temperature due to high room
temperature.
5. Abnormally high discharge He
temperature due to failure of
solenoid valve or high pressure
switch.
6. Abnormally high discharge He
temperature due to insufficient oil
flow in He Compressor.
1. Check mains wiring, fuses, and
circuit breakers, see "Fuses and
reset buttons" on page 59.
2. Adjust He supply pressure or
charge He as required.
3. Check He pressure, charge He,
look for leak.
4. Check room temperature and
cooling system of operating
room.
5. Restart the unit and check the
pressure. If it is abnormal, check
solenoid valve or high pressure
switch.
6. Look for an oil leak. If there is no
leak, replace the He Compressor
unit.
Table 5.1. Troubleshooting the He Compressor (Forts.)
Symptom Possible cause Elimination

Bruker CryoProbe System Specifications

General

Brand	Bruker
Model	CryoProbe System
Category	Laboratory Equipment
Language	English