AMI Codes-II
Maintenance
A-96.250.571 / 050517 53
6.6. Cleaning the protective Filter
Switch off the instrument according to instructions in Stop of Opera-
tion for Maintenance, p. 43
Normally the filter in your sample supply line will retain most debris.
If the filter shows deposits, proceed as follows:
1 Close the main tap of the sample inlet.
2 Close flow regulating valve [B].
3 Unscrew and remove the filter vessel [E] from the
flow cell block [A].
4 Hold the filter [D] on the shaft [C] and unscrew and remove it.
5 Backwash the filter under pressure of tap water.
6 Clean the outside of the filter.
7 Install the filter and the filter vessel again.
8 Establish the sample flow.
9 Adjust sample flow with the regulating valve.
A
B
C
D
E
Flow cell block
Flow regulating valve
Filter shaft
Filter
Filter vessel
C
D
E
B
A
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