ABB 266 HART Series, Руководство по эксплуатации

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2600T Series Pressure transmitters | OI/266/HART-EN Rev. D 63
Maintenance
If transmitters are used as intended under normal operating conditions, no maintenance is required. It is sufficient to check the
output signal at regular intervals (in accordance with the operating conditions), as described in the instructions in the section
“Operation resp. Configuration of the transmitter”. If deposits are expected to accumulate, the measuring equipment should be
cleaned on a regular basis, in accordance with the operating conditions. Cleaning should ideally be carried out in a workshop.
Repair and maintenance activities may only be performed by authorized customer service personnel.
When replacing or repairing individual components, original spare parts must be used.
Attention – Potential damage to parts
The electronic components of the printed circuit board can be
damaged by static electricity (observe ESD guidelines). Make sure
that the static electricity in your body is discharged when touching
electronic components.
If a remote seal is mounted on the measuring equipment, it must
not be removed (please refer to the dedicated document).
Warning – <Bodily injury>
Explosion-proof transmitters must be either repaired by the
manufacturer or approved by a certified expert following repair work
Observe the relevant safety precautions before, during and after
repair work. Only disassemble the transmitter to the extent
necessary for cleaning, inspection, repairs, and replacement of
damaged components.
Returns and removal
Defective transmitters sent to the repairs department must, wherever possible, be accompanied by your own description of the
fault and its underlying cause.
Warning – General risks
Before removing or disassembling the device, check for hazardous process conditions such as pressure on the device, high temperatures, aggressive or
toxic media, and so on. Read the instructions in the sections “Safety” and “Electrical connection”, and perform the steps outlined there in reverse order.
Pressure transmitter sensor
Essentially maintenance is not required for the transmitter
sensor. Anyway the following items should be checked
periodically:
– Check the integrity of the pressure boundary (no cracks
should be visible on the process connection or on the process
flanges.
– Check that there is no leakage from the sensor/flange
interface or from the vent/drain valves.
– The process flanges bolts (for 266DS/MS/PS/VS/RS models)
should not show excessive rust.
In case one of the check points above fails, please replace the
damaged part with an original spare part.
Please contact your local ABB office for spare parts support
information or refer to the spare part list.
The use of non original spare parts makes the warranty void.
In case you want ABB to perform the repair, please send back
the transmitter to your local ABB office complete with the
return form that you find in this manual appendix and include it
with the device.
Figure 50: DP and P style pressure transmitter construction