Metrohm 861 Advanced Compact IC - 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
… 4.2.9)