Xylem YSI Alyza IQ NH4, Operation Manual

Page: 122 / 170

Maintenance and cleaning Alyza IQ NH4
122
ba76202d02 05/2020
Remounting the
filter plate
Restarting the
measuring
operation
5.7.5 Cleaning the sample feed and overflow vessel
The intake line takes the sample liquid from the filter module to the filtration
pump. The sample feed tube goes from the filtration pump to the overflow ves-
sel. From time to time it can be required to clean the intake line, sample feed
tube and overflow vessel.
Abb. 5-10,
 123 shows the intake line (blue, ID 2mm; OD 4 mm) in the
Alyza IQ.
2 Switch off the filtration pump with the Stop key.
3 Pull the filtration unit out of the basin or channel.
 Do not separate the filter module from the guide slide.
 Do not dismount the filter plate from the frame.
4 Clean the filtration unit.
5 Dismount the filter module from the guide slide.
6 Unscrew the V4A countersunk screws of the frame (12 hexagon sock-
ets).
7 Remove the used filter plate.
8 Clean the frame.
Cleaning of the filter plate, see
 section 5.7.1 Mechanical cleaning of the filter plate,  117
 section 5.7.2 Chemical cleaning of the filter plate,  119
9 Insert a new filter plate in the lower frame part.
10 Place the upper frame part onto the lower frame part with the built-in fil-
ter plate.
11 Insert the V4A countersunk screws and tighten them by hand.
The fixing ring and lower part of the housing must be pressed together
and flush (without gap).
12 Remount and secure the cleaned filter module on the slide.
13 Submerse the filtration unit in the basin or channel.
14 Switch on the filtration pump with the Start key.
15 Restart the Alyza IQ and switch off the maintenance condition at the
IQ S
ENSOR
N
ET
.