4 maintenance and servicing, 1 maintenance by metrohm service, 2 care of the unit – Metrohm 813 Compact Autosampler User Manual
Page 43: 3 replacing the pump tubing
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Appendix
813 Compact Autosampler
37
4.4 Maintenance and servicing
4.4.1 Maintenance by Metrohm service
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 instru-
ments
4.4.2 Care of the unit
The 813 Compact Autosampler requires proper care and atten-
tion. Ex-cessive contamination of the instrument could possibly
lead to malfunctions and a shorter service life of the inherently
rugged mechanical and electronic parts.
Wipe up spilled chemicals and solvents immediately. The con-
nectors (in particular the power supply) should be protected from
contamina-tion. The 813 Compact Autosampler should never be
operated without plug cover
The unit has been constructed in such a way as to virtually eliminate
the possibility of penetration of corrosive media into the interior of the
instruments. If such a situation does occur, disconnect the mains
plug of the 766 Compact Autosampler immediately to prevent exten-
sive 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 2.2.
4.4.3 Replacing the pump tubing
Pump tubings are consumable material with a limited lifetime and
should be replaced at regular intervals (approx. every 2 weeks
under continuous use).
The working life of pump tubing depends to a considerable extent
on the contact pressure. This is why the contact pressure must
be correctly set as described in section 2.3.7. If the pump is to
remain switched off for a lengthy period of time the tubing car-
tridges should be raised completely by loosening snap-action
lever
15
on the right-hand side (the pre-set contact pressure re-
mains unchanged).