Metrohm 837 IC Degasser - Manual (Page 24)

4 Troubleshooting - Problems
837 IC (Eluent/Sample/Combi) Degasser/ Instructions for Use 8.837.1003
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4 Troubleshooting - Problems
4.1 Remedying faults and problems
If difficulties occur during analyses with your IC system then it is best to
search for their causes in the following sequence: column → pump →
eluent → IC system. In the "Instructions for Use" of your Modular IC
system or 761 Compact IC you will find an overview of possible faults
together with their causes and remedies.
In addition to these general problems, the following section covers
those problems which could arise from the use of the 837 IC (Elu-
ent/Sample/Combi) Degasser.
4.2 Chromatography problems
Instrument Problem Cause Remedy
Some peaks lar-
ger/smaller than ex-
pected • Carry-over of sample
from the previous mea-
surement
• Extend rinsing time between two
samples, see section 4.4
Sample/Combi Degas-
ser (Sample flow path
used)
2.837.0020
2.837.0030
Peaks smaller than
expected • Leak in system (Sample
flow path)
• Blockage in the flow
path (Sample flow path)
• Check if liquid is leaking from
the exhaust opening 15. If yes,
contact Metrohm Service.
• Contact Metrohm Service
Poor retention time
reproducibility • Leak in system (Eluent
flow path)
• Blockage in the flow
path (Eluent flow path)
• Check if liquid is leaking from
the exhaust opening 15. If yes,
contact Metrohm Service.
• Siehe Kap.4.3.
Eluent/Combi Degas-
ser (Eluent flow path
used)
2.837.0010
2.837.0030 Noisy or unstable
baseline
• Leak in system (Eluent
flow path)
• Blockage in the flow
path (Eluent flow path)
• Check if liquid is leaking from
the exhaust opening 15. If yes,
contact Metrohm Service.
• Contact Metrohm Service
4.3 Instrument problems
Problem Cause Remedy
LED "Power" 1 does not
light up (Mains switch 12 on
I )
• Mains cable not connected
• Fuse blown
• Electronics fault
• Connect the Degasser to the mains sup-
ply
• Replace fuse, see section 2.5.2
• Contact Metrohm Service