Metrohm 753 Suppressor Module - Manual (Page 30)

4.2 Maintenance and servicing
753 Suppressor Module / 8.753.1003 Instructions for Use
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4.2 Maintenance and servicing
4.2.1 Care
The 753 Suppressor Module requires proper care and attention. Exces-
sive contamination of the instrument could possibly lead to malfunc-
tions and a shorter service life of the inherently rugged mechanical and
electronic parts.
Spilled chemicals and solvents should be wiped up immediately. It is
especially important to protect the plug connections at the rear of the
instrument (particular the mains plug) against contamination.
Although constructional measures have been designed to virtually
eliminate such a situation, should corrosive media penetrate the
interior of the instruments the mains plug of the 753 Suppressor
Module must be immediately disconnected to prevent extensive
damage to the instrument electronics. Inform Metrohm service if your
instrument has been damaged in such a way.
The instrument must not be opened by untrained personnel. Please
comply with the safety notes in section 1.4.1.
4.2.2 Maintenance by Metrohm service
Maintenance of the 753 Suppressor Module is best done as part of an
annual service performed by specialists from the Metrohm company. If
work is frequently performed with caustic and corrosive chemicals, it
may be necessary to shorten the interval between servicing.
The Metrohm service department is always willing to offer expert advice
on the maintenance and servicing of all Metrohm instruments.
4.2.3 Shutdown
If the IC system is shut down for a considerable length of time, the en-
tire IC system (without column and suppressor) must be rinsed free
from salt with methanol/water (1:4) to avoid crystallization of eluent
salts with the corresponding subsequent damage. In order to rinse
them the separating column and suppressor are disconnected and the
injector and detector are directly connected to each other. Rinse with
methanol/water (1:4) until the conductivity drops below 10 µ S/cm.
All three suppressor units are then rinsed for about 5 min with ultrapure
water.