Specifications

Replace the valve-to-needle tubing
Once per year -- or when you
notice signs of damage or wear
Exchange the analytical
needle assembly
When the needle shows signs of
damage or blockage -or- when using
the short needle assembly with high
test tubes (>45 mm)
Exchange the internal tray
When the flow delay sensor
no longer works
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16
FRACTION COLLECTORS
Analytical and Preparative Fraction Collector Maintenance
Fraction collectors/spotters are very
user friendly, and do not require much
m
aintenance. However, you
s
hould
p
erform the following routine procedures:
●
Exchange the tubing
at least once per year.
●
Replace the capillaries.
●
Replace the flap septum.
There are two types of tubing available
to connect the valve with the needle:
preparative scale PTFE tubing (0.8 mm id)
and
analytical scale tubing (0.25 mm id).
Both types should be replaced when they
become contaminated, worn or damaged.
Before replacing the tubing, be sure to …
1. Position the fraction collector’s transport
unit in the “Home” position.
2. Remove all installed trays
from the tray base.
3. Position the transport unit in
the “Change Parts” position.
4. Turn off the instrument.
Consult your user’s manual for detailed
replacement instructions.
Tubing Replacement
Simple Repairs
Replace the inlet/waste tubing
Once per year -- or when you
notice signs of damage or wear
Exchange the
preparative
needle assembly
When the needle shows signs
of damage or blockage
Exchange the diverter valve
When the valve is leaking
or not switching properly
Repair or exchange a funnel within
the internal tray or funnel tray
When defective, leaky,
blocked or contaminated
Procedure When to Perform