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
Tools required
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
