Metrohm 833 IC Liquid Handling Unit - Manual (Page 87)

9.2 Care and maintenance
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
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9.2 Care and maintenance
9.2.1 Instrument care
The 833 IC Liquid Handling Unit and its associated modules require a
reasonable amount of care. If the instrument becomes excessively dirty
this could affect the functioning and shorten the working life of the
basically robust mechanism and electronics.
Split chemicals and solvents should be cleaned up immediately. Above
all, the connection strip (the mains plug in particular) must be kept
clean.
Although this prevented to a large extent by constructive measures, if
aggressive media should penetrate the interior of the instrument then
the mains plug of the 833 IC Liquid Handling Unit should be pulled
out immediately in order to prevent massive damage to the
electronics. If such damage should occur please contact the Metrohm
service department.
The instrument must not be opened by untrained personnel. Please
observe the safety information given in Section 1.4.
9.2.2 Maintenance by Metrohm service
Servicing the 833 IC Liquid Handling Unit should be carried out within
the framework of an annual service visit by technicians from Metrohm. If
aggressive or corrosive chemicals are used then shorter service
intervals are necessary.
The Metrohm service department is always pleased to provide
competent advice about the servicing and maintenance of all Metrohm
instruments.
9.2.3 Shut down
Suppressor module/Sample preparation module
If the IC system is not to be used for a long time then the whole IC
system (without column and suppressor module/sample preparation
module) must be rinsed salt-free with methanol/water (1:4) to prevent
eluent salts from crystallizing out and causing subsequent damage.
Rinsing is carried out by disconnecting the column and suppressor and
connecting the injector directly to the detector. Rinsing is carried out
with methanol/water (1:4) until the conductivity falls below 10 µ S/cm.
Each of the three suppressor units is rinsed with ultrapure water for
approx. 5 min.