Metrohm 850 Professiona IC Cation Prep 1 - Manual (Page 100)

5.1 Problems and their solutions
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90 ￭￭￭￭￭￭￭￭
850 Professional IC –Cation – Prep 1
Problem Cause Remedy
￭ Replace separation column (see "Connect-
ing and rinsing the separation column",
page 59).
Eluent – Gas bubbles in the
eluent. Check connections of the eluent degasser (see
Chapter 2.9, page 33).
High pressure pump –
defective. Request Metrohm Service.
Vacuum is not being
built Eluent Degasser – Connec-
tor Vacuum on the rear of
the instrument not (tightly)
sealed. ￭ Seal the connector Vacuum tightly with a
6.144.6040 threaded stopper.
or when using an 872 Extension Module:
￭ Connect an FEP tubing between the IC
instrument and the Extension Module and
tighten both clamping screws until they
seal.