Specifications

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8
AUTOSAMPLER MAINTENANCE
Rotor seal replacement is the most common injection valve
m
aintenance procedure. Indications include rotor seal blockages
and cross-port leaks. You should suspect a cross-port leak if you
notice a drop of mobile phase coming out of the needle when it
rises to draw sample from a vial. Or, if you experience poor
i
njection volume precision. Cross-port leaks can also be found by
performing a pressure test.
Tools
9/64″ Allen wrench (to remove the stator face and
disassemble the valve)
Metric hexagonal keys (for the rest of the Autosampler screws)
1/4
″ Wrench (to remove the capillaries)
For Standard and Well Plate Autosamplers
G1313A, G1327A, G1367A
Replacing the Rotor Seal
1. Remove the capillaries
from the stator face.
Remove the stator
screws with a 9/64≤
Allen wrench.
2. Remove the stator head,
stator face, and
stator ring.
3.
Remove and replace
the rotor seal (and
the isolation seal,
if necessary).
Injection Valve Maintenance
4. Install the stator head,
then the stator face.
Replace the stator
screws, tightening them
evenly and carefully.
5. Connect all capillaries
according to the
diagram below.
A - Pump
B - Metering device
C - Plug
D - W
aste
E - Needle seat
F - Column
A
B
C
D
E
F