ABB Aztec 600, Руководство пользователя, Страница: 67 / 109

Aztec 600 aluminium, ammonia, color, iron, manganese, phosphate
Single- and multi-stream colorimetric analyzers 13 Maintenance
64 IM/AZT6CR–EN Rev. J
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, calibration and cleaning
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
13.3.1 Annual Maintenance Schedule
Annual maintenance required:

Replace piston seal

Rotate glass cell

Replace sample tubing
24-month maintenance required:

Replace valve diaphragms

Replace piston seal

Replace glass cell

Replace analyzer tubing
13.3.2 Annual Maintenance Kits
12-monthly and 24-monthly maintenance kits, that include all
the components required for annual maintenance, are available
for both single stream and multi stream analyzers.
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.
13.3.3 Maintenance Tools Required

Small flat-bladed screwdriver

No. 2 Pozidrive screwdriver

3 mm Allen key

4 mm Allen key
13.3.4 Replacing the Valve Diaphragms
1. Referring to Fig. 13.1:
a. Check that anti-rotation device
A
is positioned at
the bottom of the slot in the measurement cell top
cover, indicating that the measurement cell piston is
at the bottom of its stroke.
b. Press and select 'Diagnostics' followed by 'Cell
Diagnostics' from the 'Operator' menu.
c. Use and to highlight the 'Operation' field and
press repeatedly to select 'Pump Reset'.
d. Use and to highlight and press to
reset the measurement cell piston to the bottom of
its stroke and empty the measurement cell tube.
2. Isolate the analyzer from the power supply.
3. Turn off the sample feed to the side sample pot.
4. Referring to Fig. 13.1:
a. Open the analytical section door and record the
fitted position of each of the tubes connected to the
valve manifold
B
to prevent reconnection errors.
b. Disconnect all tubes from the valve manifold.
Caution. Fluids from the analyzer are contaminated with
acid from the reagents. Wear rubber gloves and apron and
suitable eye protection when disconnecting the tubing to
guard against splashes. Wipe up all spillages immediately.
Note. Steps b to d are applicable only if the
anti-rotation device is not positioned as shown.
Caution. During step b, do not allow any fluid
draining from the tubes or the valve manifold
assembly to come into contact with either the
skin or any metallic/electronic parts of the
analyzer. Some of the fluids are contaminated
with acid from the reagents used in the analyzer.
Wipe up all spillages immediately.