ABB Navigator 500 Series, Руководство по эксплуатации

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Navigator 500
Sodium analyzer 8 Maintenance
OI/ASO550–EN Rev. G 67
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:

tubing (item
A
) between the reagent container and entrainment ‘T’ piece – this must be a polyethylene-lined tube with good
chemical resistance to the reagent.

tubing (item
I
) 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.
Note. Tubes
B
,
C
and
D
use QD couplings at the solution bottles, all other tubing connections are to barbed connectors.
Fig. 8.7 Replacement of plastic tubing – single-stream sodium
Entrainment T-piece and
constant-head unit moved forward
for clarity only. Refer to Fig. 2.1,
page 6 for locations within cubicle.
Key to tubing
To flowcell
Single-stream configuration –
wet-sections
without
regeneration option.
Single-stream configuration –
wet-sections
with
regeneration option