Aztec 600 ISE ammonia and fluoride
Single-stream ion-selective analyzers 13 Maintenance
OI/AXM630–EN Rev. I 65
13.2 Regular Visual Checks
Inspect the analyzer on a regular basis to ensure the correct
functioning of the system and to check the integrity of the
readings:
Check for leaks, particularly around the sample and drain
pipework connections.
Confirm sample flow by checking delivery to the
constant-head unit and effluent from the drain.
Check liquid levels in the reagent and standard solution
bottles.
Inspect all tubing and liquid-handling components for
leaks and deterioration.
Check for malfunction indications on the analyzer display.
13.3 Annual Maintenance
Annual maintenance required:
Replace pump tubing and capstans – see Section 13.3.1
Replace analyzer tubing – see Section 13.3.2, page 67
Annual maintenance kits, that include all the components
required, are available.
Annual refurbishment ensures a high level of reliability from the
analyzer.
Re-order the kit when used so that all the items are available
throughout the following year's operation.
For part numbers, refer to the Spares section – see Appendix G
on page 90.
13.3.1 Replacing Pump Tubing and Capstans
Tool s requ i re d
No. 2 Pozidriv screwdriver
Long-nosed pliers
Procedure
1. Press the key and use the and keys to select
'Operate' followed by 'Stop Monitor' and press the
key.
2. Referring to Fig. 13.1:
a. Release thumbscrews
A and open the
liquid-handling section door.
b. Unlock catch B, pull the liquid-handling section panel
forward and lock into the vertical position using catch
B.
Note. Flush replacement tubing with clean water before
fitting it to the analyzer.
Fig. 13.1 Accessing the Pump
A
B
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