Endress+Hauser TopClean S CPC 30, Руководство по эксплуатации

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7 Maintenance TopClean S CPC 30
94 EHauser
Removing diaphragm blockages:
Blocked reference system diaphragms can be mechanically cleaned (only sensors with
ceramic diaphragms does not apply to teflon diaphragms or open ring electrodes):
•
Use a small key file.
•
Only file in one direction.
7.3 Manual calibration in the context of maintenance
If calibration is to be performed outside the assembly, (e.g. for test purposes), please
pay special attention to the operating mode of the pH input. With preselection "with PML"
(= symmetrical connection), the PM lines of the CPM 153 must also be immersed in the
calibration solution.
!
Note!
The assembly must be moved into the service position with the service switch, before
manually calibrating.
7.4 Maintenance of cables, connections and power
supply lines
Weekly checks (recommended timeframe):
Check the tightness of:
•
Compressed air hoses and connections
•
Motive water hoses and connections and
•
Hose and connections of the cleaner tank.
Check
•
The multihose connections of the CPG 30 and assembly for tightness.
Monthly checks (recommended timeframe):
•
Check sensor plug-in head for tightness and humidity (if the assembly is located in a
humid environment or outdoors).
•
Check the sensor cable and particularly the outer insulation for breaks. Sensor cables
which have become damp on the inside must be replaced. Only drying is not
sufficient!
•
Check cable glands for tightness.
Six-monthly checks (recommended timeframe):
•
CPM 153: Retighten the terminals in the instrument.
•
Also check the interior and the PCBs are clean, dry and free of corrosion.
– If not: check the seals and threaded joints for leaks and breaks).
•
Check sensor plug-in head for tightness and humidity (if the assembly is located in a
dry environment).