Metrohm 861 Advanced Compact IC User Manual
Page 93
4.3 Faults and malfunctions
861 Advanced Compact IC / Instructions for Use 8.861.1033
83
Malfunction
Cause
Rectification
Extreme peak
broadening,
splitting (double
peaks)
•
Dead volume at the co-
lumn ends
•
Check the connections
(use PEEK capillaries with
0.25 mm i.d. between in-
jection valve and detector
block)
•
Turn separation column (if
allowed), or replace it
No feed of re-
generation or
rinsing solution
for suppressor
•
Contact pressure too
low
•
Leak in system
•
Defective pump tubing
•
Contamination of the fil-
ter in the 6.2821.120 Fil-
ter unit PEEK
•
Counterpressure at sup-
pressor module «MSM
II» too high
•
Adjust contact pressure
(see Section 2.10.2)
•
Check connections and
make leakproof
•
Replace pump tubing (see
Section 4.2.10)
•
Replace the 6.2821.130
Filter (see Section 2.3.6)
•
Clean or replace suppres-
sor (see Section
4.2.7