Periodic Maintenance; Period Maintenance And Inspection - Hitachi L-2100 Instruction Manual

5.2 Periodic Maintenance

Perform period maintenance and inspection according to Table 5-1. This prevents
problems and ensures that your system meets specifications.
Check Location
1. Small particles
(dust) are often
present in the
solvents.
Solvent
filter
2. The column is
expensive.
Table 5-1

Period Maintenance and Inspection

Procedure
Wash the solvent filter
with an ultrasonic cleaner
every 4 months.
Clean the solvent bottle
every 2 days.
Ensure that you are using
the correct solvent when
refilling the solvent
bottle.
1) Do not stop the pump
just after completion
of an analysis!
The pump must be kept
running for 30
minutes after
completion of an
analysis.
2) Do not introduce a
sample containing
particles!
Ensure that the sample
contains no particles
or impurities.
3) Periodically clean
the column!
Components left in the
column will contaminate
it.
5 - 6
Remarks
Intrusion of particles
into the pump causes
increase and/or unstable
pressure and flow and
composition problems will
occur.
• Part of a complex
sample is apt to remain
in the column.
This not only causes
poor stability or
drift, but shortens the
column life.
• Particles present in
the sample plug the
column filters.
Pressure will increases
abnormally. Impurities
in the sample also
contaminate the column.
Impurities cause
erroneous data.
• Occasionally clean the
column by injecting a
large amount (1 to
3 mL) of solvent.
The injection of the
solvent will dissolve
the sample residues.
Cleaning of the column
insures good separation
and stability.