Hach-Lange Filter probe sc - Manual (Page 27)

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Section 5 Operation
5.1 The operation concept
No actions are intended to be performed by the operator on the
filtration probe sc (except cleaning and replacement of the filter
modules). All commands and control instructions are sent
automatically by the analysis instrument connected or are made via
the controller. Read the operating instructions for the analysis
instrument and the controller thoroughly to ensure you can operate
the system safely, without errors and correctly.
5.1.1 Rectifying problems in normal operation
In normal operation only feasible, sensible entry options are
displayed. If you then enter incorrect values, these will be rejected.
If you have made incorrect entries, repeat the entry with the correct
values.
Note: If your entry was outside a logical working range, a correction is
made automatically. Note that the value is then still incorrect and must be
corrected.
5.2 Normal operation
In normal operation the filtration probe sc does not require
supervision, operation or maintenance.
5.2.1 Rectifying problems in operation
5.2.1.1 Problems with the sensors or the analysis instruments
If a sensor or analysis instrument is reporting errors or warnings, a
corresponding error will be displayed on the controller (see
operating instructions for the controller).
5.2.1.2 Module pressure value too low
If the filter modules block, the module pressure value in the filtration
probe sc drops.
1. Clean or replace the filter modules (see Cleaning / replacing
filter modules" on page 28 ).
2. Check all relevant settings.
If the problems have not been rectified, please contact customer
service.
Pressure value State Action
< 0.25 bar Blocked Replace filter modules
0.25 bar...0.45 bar Soiled Clean filter modules
> 0.45 bar ok No action