4.8 Servicing the pulsation absorber
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76
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883 Basic IC plus
4.8 Servicing the pulsation absorber
CAUTION
The pulsation absorber is maintenance-free and must not be opened.
4.9 Injection valve
Maintenance on the injection valve is best performed by specialist person-
nel from Metrohm during annual service.
4.10 Suppressor
4.10.1 Notes for operating the suppressor
To protect the suppressor against foreign particles or bacterial growth, a
pump tubing connection with filter (6.2744.180) (see "Installing the pump
tubing", page 39) must be mounted between the peristaltic pump (see
chapter 3.14.2, page 42) and the inlet capillaries of the suppressor.
NOTICE
The suppressor units must never be regenerated in the same flow direc-
tion the eluent is pumped. Therefore, always mount the inlet and outlet
capillaries according to the diagram outlined in chapter Connecting the
suppressor, page 33.
The suppressor consists of 3 suppressor units, which are used for suppres-
sion, regenerated with regeneration solution and rinsed with ultrapure
water in rotation. In order to record every new chromatogram under com-
parable conditions, you should normally work with a freshly regenerated
suppressor.
CAUTION
The suppressor must never be switched over if liquid is not flowing
through it, since otherwise it may become jammed. If the suppressor is
in a dry state, it must be rinsed for at least 5 minutes before it may be
switched over.
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