Flow Path System - Hitachi L-8900 Service Manual

1.4 FLOW PATH SYSTEM

Moving (X)
(1.5 mL × 200 pieces)
The flow path system of Autosampler is shown in Figure 1-2.
Sampler vials are set on the sample rack.
The needle can move to the sample vial, cleaning port and
injection port by moving the sample rack in the right-left direction
(X-direction), and the needle arm in the front-back direction (Y-
direction) and in the vertical direction (Z-direction). The valve and
the syringe are connected to the needle, and samples can be
sucked and discharged. The needle tip sucks a sample, the needle
is cleaned at the cleaning port, the injection valve is switched to the
injection side, and the sample is introduced in the flow path.
SUS pipe
Teflon tube
Moving (Y)
Injection port
Vial Cleaning port
(200 µL)
Teflon tube
Drain
1.0 mm ID × 300 mm
(235.5 µL)
Drain
Pump 2
INLET
(from Pump 1)
Pipe IV6 Sample loop
0.5 mm ID × 700 mm
(140 µL)
Pipe IV3 Sample loop
µL)
0.17 mm ID × 360 mm (8.2
Pipe IV5
0.8 mm ID × 1,000 mm
(500 µL)
4
5
6
Syringe
(500 µL)
Pump 1
1 - 9
OUTLET
(to Line filter, Column)
1 2
6 3
5 4
Pipe IV4
1.0 mm ID × 100 mm
(80 µL)
3
2
1
Degasser
Cleaning liquid (C1)
Filter