Metrohm 2.942.0300, Manual, Page: 51 / 56

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6 Troubleshooting
942 Extension Module Vario ChS-PP (2.942.0300)
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43
6 Troubleshooting
6.1 Problems and their solutions
Problem Cause Remedy
The pressure in the
system markedly
increases.
The MSM is blocked.
￭
Regenerate the MSM (see chapter 5.3.3.2,
page 35) .
Note: 6.2821.180 pump tubing connection
with filter must be used.
The peristaltic pump
is pumping too little. Peristaltic pump – Contact
pressure too weak. Correctly set the contact pressure (see "Setting
the contact pressure correctly", page 20) .
Peristaltic pump – Filter
blocked. Replace the filter (see "Replacing the filter",
page 33) .
Peristaltic pump – Pump
tubing defective. Replace the pump tubing (see chapter 5.2.2.1,
page 32) .
MSM – Insufficient
flow of regeneration
solution or rinsing
solution. Peristaltic pump – Contact
pressure too weak. Correctly set the contact pressure .
Peristaltic pump – Filter
blocked. Replace the filter (see chapter 5.2.2.2, page
32) .
Peristaltic pump – Pump
tubing defective. Replace the pump tubing.
The background
conductivity is too
high. The MSM is not connected. Connect the MSM (see chapter 3.4, page 21) .
MSM – No or insufficient
flow of regeneration solu-
tion or rinsing solution. Check the flow of the regeneration solution
and of the rinsing solution .
Baseline increasing
strongly. Insufficient flow of regener-
ation solution or rinsing
solution. See problem "MSM – Insufficient flow of
regeneration solution or rinsing solution."
See problem "SPM – Insufficient flow of regen-
eration solution or rinsing solution."
MSM – Reduced capacity. Regenerate the MSM (see chapter 5.3.3.2,
page 35) .
SPM – Reduced capacity. Regenerate the SPM (see chapter 5.3.3.2,
page 35) .