6
SERVICE
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DK46 - DK800
www.krohne.com 05/2019 - 4000430905 - AD DK46-800 Exi-II2G R06 en
6.1 Maintenance
Maintenance work of a safety-relevant nature within the meaning of explosion protection may
only be carried out by the manufacturer, his authorised representative or under the supervision
of authorised inspectors.
For systems in hazardous areas, regular tests are required in order to maintain the proper
condition.
The following checks are recommended:
• Check the housing, the cable entry and the feed lines for corrosion or damage.
• Check the measuring unit and the piping connections for leakage or damages of the glass
cone.
• Include the flowmeter in the scheduled periodic inspection the process line and fittings.
6.2 Dismantling
Exchanging the entire device
The dismantling and installation is within the responsibility of the operator.
Before disconnecting the electric connecting cable of the device, make sure that all cables
leading to the indication unit are isolated from the ground of the hazardous area.
This also applies to functional earth conductors (FE) and equipotential bonding conductors (PA).
Preventive maintenance
Maintenance work of a safety-relevant nature within the meaning of explosion protection may
only be carried out by the manufacturer, his authorised representative or under the supervision
of authorised inspectors.
WARNING!
•
Pressurised pipes have to be depressurised before removing the measuring unit.
•
In the case of environmentally critical or hazardous products, appropriate safety precautions
must be taken with regard to residual liquids in the measuring unit.
•
New gaskets have to be used when re-installing the device in the pipeline.
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