Service; Maintenance; Dismantling - Siemens SITRANS FX330 Ex-i Additional Operating Instructions

SERVICE

6

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.
Treat cover threads as necessary with the lubricating paint UNIMOLY C220
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 entries and the feed lines for corrosion and/or damage.
• Checking the measuring unit and the piping connections for leakage.
• Check the measuring unit and the indicator for dust deposits.
• Including the flowmeter in the regular pressure test of the process line.

6.2 Dismantling

Exchanging the built-in equipment
The dismantling and installation is within the responsibility of the operator.
Due to the modular design of the vortex flowmeters, from a safety perspective, the electrical
equipment built into the display can be replaced with identical spare parts. To do so, remove the
housing cover. Close the housing cover immediately after the spare parts are exchanged.
Ensure that the cover seal is tight.
General notes
Exchanging and dismantling should take place in a de-energised state, if at all possible. If that is
not possible, the basic conditions for intrinsic safety (e.g. no grounding or connection of different
intrinsically safe circuits to one another) must be observed during dismantling.
Display
The display can be rotated in 90° increments. It is connected to the connector as shown in the
following figure.
Exchanging the converter insert
It is permitted to replace the entire SITRANS FXT030 converter insert with a brand-new version
identical in construction.
24 www.siemens.com/flow
SITRANS FX330
®
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09/2018 - A5E39673922-AB