Replacing Plastic Tubing - Single-Stream Wet-Sections - ABB Navigator 500 Series Operating Instructions Manual

Navigator 500
Sodium analyzer
8.7 Replacing plastic tubing – single-stream wet-sections
It is recommended that all plastic tubing is replaced every 12 months. Use only the correct size and type of tubing – refer to Fig. 8.7
for tubing location and Table 8.2, page 68 for tubing lengths.
Two sections of tubing are critical:
A

tubing (item ) between the reagent container and entrainment 'T' piece – this must be a polyethylene-lined tube with good
chemical resistance to the reagent.
I

tubing (item ) between the constant-head unit and the entrainment 'T' piece – cut 100 mm (4 in.) of the 1 mm ID silicon
rubber tube and fit onto the tube connectors. The tube should be taut to prevent interference with the flow and self-starting
characteristics.
B C
Note. Tubes , and
Entrainment T-piece and
constant-head unit moved forward
for clarity only. Refer to Fig. 2.1,
page 6 for locations within cubicle.
To flowcell
Key to tubing
Single-stream configuration –
wet-sections
Single-stream configuration –
wet-sections
Fig. 8.7 Replacement of plastic tubing – single-stream sodium
OI/ASO550–EN Rev. G
D
use QD couplings at the solution bottles, all other tubing connections are to barbed connectors.
regeneration option.
without
regeneration option
with
8 Maintenance
67