KROHNE GA 24 ATEX II2G Ex i EN - Manual (Page 12)

6
SERVICE
12
GA24
www.krohne.com 06/2013 - 4000836702 - MA G24-Ex-II2G-AD R03 en
Service
6.1 Maintenance
The measuring device requires no maintenance under normal operating conditions and when
used as prescribed.
The following visual checks should be carried out at regular intervals in conjunction with the
system inspections required in hazardous areas to keep equipment in good operating condition:
• Checking the housing, the cable entries and the feed lines for corrosion and/or damage.
• Inspection of the measuring unit for leaks and glass cones.
• Include the flowmeter in the periodic pressure testing of the process piping.
Depending on application, however, the measuring function may in unfavourable cases become
impaired through soiling of the measuring cone and/or float.
Clean the meter in accordance with the installation and operating instructions for non-explosion
proof versions of the product.
The measuring unit must be removed for cleaning. To do this, follow the instructions for
removing the entire device.
6.2 Dismantling
Electrical connection
Dismantling should take place in a de-energised state if at all possible. If not possible, observe
the boundary conditions for intrinsic safety (e.g. no grounding or connection of different
intrinsically safe circuits) during dismantling.
Process connections
CAUTION!
•
Pressurized pipes have to be depressurized before removing the measuring unit.
• Avoid uncontrolled discharge of residual liquids from the measuring unit.
• Avoid uncontrolled discharge of residual fluid from the measuring unit.
• Where environmentally critical products are concerned, carefully decontaminate the wetted
parts of the measuring tube after dismantling.
• Removal and installation are the responsibility of the operator.
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