Repairing the Sampler 4
1100 Series WS MWS Reference Manual 117
Exchange the Needle Seat ( G1377-87101) on the G1377A/78A Samplers
1 In the user interface start the maintenance mode and select the “Change
Needle/Seat” function.
2 Open the front door and remove the side door.
3 Remove the plate tray from the tray base.
4 Disconnect the seat capillary from the needle seat with the 4 mm open
wrench.
5 Use the flat-head screwdriver to remove the needle seat.
6 Insert the new needle seat (G1377-87101). Press it firmly in position.
7 Connect the seat capillary to the needle seat with the 4 mm open wrench.
8 Replace the plate tray in the tray base. Re-install the side door and close the
front door.
9 In the user interface close the “Change Needle/Seat” function and exit the
maintenance mode.
When required When the seat is visibly damaged
When the seat capillary is blocked
Tools required 1/4 inch-5/16 inch wrench 8710-0510 (supplied in accessory kit)
4 mm open end wrench 8710-1534 (supplied in accessory kit)
Flat screwdriver
Parts required G1367-87101 Needle-Seat assy (0.17 mm ID 2.3 µl) for G1367/68A
G1377-87101 Needle-Seat (without capillary) for G1377/78A
G1375-87317 Seat Capillary (150 mm 0.10 mm ID) for G1377-87101 Needle Seat
or
G1375-87300 Seat Capillary (150 mm 0.05 mm ID) for G1377-87101 Needle Seat
WARNING
When opening capillary or tube fittings, solvents may leak out. Please observe
appropriate safety procedures (for example, goggles, safety gloves and protective
clothing) as described in the material handling and safety data sheet supplied by the
solvent vendor, especially when toxic or hazardous solvents are used.
NOTE
The seat capillary can be exchanged alone if the needle seat is not damaged.
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