Agilent InfinityLab LC Series Vialsamplers User Manual 235
8Maintenance
Exchange the Needle Seat Assembly
Exchange the Needle Seat Assembly
When
• The seat is visibly damaged.
• Leaks or blockages are observed.
• The limit for the seat interaction EMF counter is exceeded.
• The needle seat needs to be replaced as part of the yearly maintenance.
Tools required p/n Description
8710-1924 Open-end wrench 14 mm
8710-2140 Screwdriver Torx TX-10
Flat screwdriver
Parts required # p/n Description
1 G7129-87017 Seat Assembly, 1260 Vialsampler, PEEK, 0.17 mm
OR 1 G7129-87012 Seat Assembly, 1290 Vialsampler, PEEK, 0.12 mm
OR 1 G7129-87117 Seat Assembly, 1260 Vialsampler, Vespel, 0.17 mm
OR 1 G7129-87112 Seat Assembly, 1290 Vialsampler, Vespel, 0.12 mm
Preparations
• Finish any pending acquisition job.
• Stop the flow at the pump and remove the solvent lines from the eluent bottles to avoid spilling
solvent.
• Close the shutoff valves at the pump if available.
Risk of injury by uncovered needle
An uncovered needle is a risk of harm to the operator.
Do not open the safety cover of the needle station during normal
operation.
Wear safety goggles and safety gloves when removing the needle
assembly.
When the instrument setup has changed, configure the new setup in the online
view of the Chromatographic Data System. See Table 15 on page 155.
It is recommended to always exchange the needle assembly and the needle seat
at the same time to prevent premature leakage.
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