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7 Upgrade procedures
7.1 Upgrading the flowmeter
Part number:
— AW502 250
Referring to Fig. 7.1:
1. Depress manual override button
assembly to drain the flowcell.
2. Remove outlet tube B from QD coupling C by
depressing collar D on QD coupling C and pulling tube
B up.
3. Unscrew and remove QD coupling C and wipe up any
water spillage.
4. Screw new QD coupling C in and fit:
— flowmeter E
— (upper) QD coupling F
— sample outlet tube G
IMPORTANT (NOTE)
Ensure sample outlet tube G is located
correctly over tundish assembly H.
5. Remove the flowcell PCB cover as detailed in step 1 of
Section 6.1, page 4.
6. Remove blanking plug I from front of flowcell PCB
housing J and replace with supplied cable gland (and
O-ring) K.
7. Pass flowmeter cable L through cable gland K at
flowcell PCB housing
terminal block TB2 – refer to Fig. 6.7, page 7.
8. Tighten cable gland K to form a watertight seal.
9. Check sample outlet tube
H
tundish assembly
Referring to Operating instruction OI/ADS550-EN:
10. Configure the transmitter to read the output from the
flowmeter by selecting Sensor Setup, scrolling to
Flowmeter and selecting Enabled.
(This enables auto calibrations to be configured.)
Navigator ADS551 | Low level dissolved oxygen | Replacement / Upgrade procedures – wet section spares | INS/ANAINST/025-EN Rev. B
A
on the drain valve
J
and make connections to PCB
G
is located correctly over
and restart sample flow.
Upgraded flowmeter fitted and connected
Fig. 7.1 Upgrading the flowmeter assembly
9
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