Xylem YSI Alyza IQ NH4, Operation Manual

Page: 126 / 170

Maintenance and cleaning Alyza IQ NH4
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Preparations
Cleaning
NOTE
Detergents containing alcohol will damage the overflow vessel.
6 Put on your personal protective equipment (PPE) and chemical resis-
tant gloves (see section 2.4 Personal protective equipment (PPE),
 24).
7 Switch off the filtration pump with the Stop key.
8 Keep ready a container to collect the contents of the overflow vessel.
9 Empty the sample tube (Alyza menu / tab
Wartung /
Wartung Messein-
heit
/
Entleeren (einzeln)
)
10 Unscrew the sample tube from the overflow vessel.
11 Open the quick coupling of the sample feed tube on the overflow vessel
and let the contents of the overflow vessel drain into the container.
12 Remove the overflow vessel from the Alyza IQ.
13 Open the lid of the overflow vessel.
14 Clean the overflow vessel and lid with a brush, water, descaler or deter-
gent.
Subsequently, thoroughly rinse the overflow vessel with water to
remove any detergent residues.
15 If necessary: exchange or clean the filter plate (see section 5.7.1
Mechanical cleaning of the filter plate,
 117).
16 Disconnect the intake line from the filter module and put it in a container
with cleaning solution (recommendation: see section 5.3 Replacement
parts, accessories,
 103).
For the minimum quantity of cleaning solution for the different line
lengths, see the following table:
Length of intake line Minimum quantity of cleaning solution
5 m ≥ 30 ml
10 m ≥ 50 ml
20 m ≥ 100 ml
17 Insert the end of the sample feed tube into a bottle ( ≥ 0.5 l) or another
suitable container.