24
Maintenance Work on the Drive Unit
The drive unit must be removed, for example:
• for general maintenance or inspection
• to clean the calibration chamber, eg, after a sensor has broken
• to change the sensor / calibration-chamber gaskets
• in the event of a technical fault of the drive unit.
Position indicator
NOTICE
Before working on the drive unit make sure that the sensor lock-gate is in SERVICE position. This position is
attained by: the service switch (see Unical 9000(X) installation manual) or the “Maintenance” menu of the
Protos 3400(X) (see user manual of PHU 3400(X)-110 module).
While working on the sensor lock-gate, other persons must be prevented from actuating the control unit.
The position indicator shows whether the sensor lock-gate is in SERVICE position.
!
WARNING
When the drive unit must be removed under process conditions, be sure to wear protective clothing,
gloves, and goggles to protect yourself against process fluid that might escape. The drive unit serves as
second barrier after the ceramic rotary slides, i.e. even after a breakage in the ceramics or a defect in the
probe housing an uncontrolled escaping of process fluid is prevented. When removing the drive unit
under process conditions, you must check whether the first barrier (rotary slides, probe housing) functions
properly.
Содержание Ceramat WA 153
Страница 1: ...User Manual English Latest Product Information www knick de Ceramat WA 153 Sensor Lock Gate ...
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Страница 28: ...28 Installation Dimensions Approx 800 mm clearance for sensor installation Liquid Electrolyte ...
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