Hach QC8500 Series 2 - Waste and Sample Line Installation

13
Installation
3.1.5 Waste and sample line installation
3.1.5.1 Sample line
A sample line consists of a union connector, 130 or 190 cm of Teflon
®
tubing 0.8 mm
(0.032 in.) ID, two pump tube adapters, a green-green pump tube with its ends trimmed
to 2 cm past both green tabs and 30 cm of Teflon tubing 0.8 mm (0.032 in.) ID.
To install the sample line:
1. Trim the ends of a green-green pump tube to 2 cm past both green tabs (Figure 7).
This procedure only applies to the green-green pump tube used in a sample line. All
other pump tubes do not need to be trimmed.
Note: Refer to the QuikChem method to find the pump tube color to be used as a sample line.
Most manifolds will use a green-green pump tube, but there are some exceptions.
2. Attach the sample line pump tube on a pump tube cartridge (Figure 8). Do not clamp
down the cartridge on the pump. Refer to Section 4 on page 29 for further details.
3. Connect the 30 cm Teflon tubing to port 6 of the injection valve.
4. Connect the 130 or 190 cm Teflon tubing to the probe on the sampler.
Figure 6 Flow cell connectors
1 To waste 2 Inlet (from manifold)
Figure 7 Trimming the green-green pump tube
1 Scalpel 2 Green-green pump tube 3 Green tab (2x)
1
2
3
20 mm
20 mm
[0.79 in]
[0.79 in]
Figure 8 Sample line pump tube and cartridge
1 From probe 2 To injection valve