134 1100 Series WS MWS Reference Manual
4 Repairing the Sampler
Sampling Unit
Removing the sampling unit
1 In the user interface start the maintenance mode and select the “Change
Needle/Seat” function.
2 Switch off the sampler at the main power switch. Remove the power cable.
3 Remove the top cover, top plate, and foam (see “Top Cover and Foam" on
page 132).
4 Remove the plate tray from the tray base.
5 Remove the transport assembly, (see“Removing the sample transport" on
page 133).
6 On the injection valve remove the capillaries coming from the pump (port 1)
and going to the column compartment (port 6), (Use a 1/4 inch wrench if
you remove a SST capillary or a 4 mm wrench if you remove a fused silica
capillary).
7 Slide the sampling unit and tray base back to disengage the sampling-unit
connector.
8 Lift the sampling unit and tray base approximately 10 cm. Slide the leak
sensor out of the leak plane.
9 Lift the sampling unit and tray base out of the sampler.
10 Turn the tray-base locking screw ¼-turn anti-clockwise.
11 Slide the tray base back to disengage the tray base from the sampling unit.
When required When sampling unit defective.
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)
Pozidrive screwdriver
Flat-head screwdriver (if interface board installed)
Parts required G1367-60008 Sampling unit for the G1367A/68A samplers
G1377-60008 Sampling unit for the G1377A/78A samplers
(the assy comes without injection valve and analytical head)
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