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2 6 6 D D S H A R T | P R E S S U R E T R A N S M I T T E R S | O I/ 2 6 6 D D S - E N R E V. A
9 Maintenance / Repair
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). If deposits are expected to accumulate,
the 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.
266DDS user repair is not permitted.
When replacing or repairing individual components, original
spare parts must be used.
WARNING - BODILY INJURY
The device can be operated at high pressure and with
aggressive media. Any medium that spurts out can cause
severe injuries.
Depressurize the pipeline/tank before opening the
transmitter connection.
IMPORTANT
Potential damage to device as a result of electrostatic
charging!
When the housing is open, EMC protection is impaired and
there is no longer any protection against accidental contact.
The electronic components of the printed circuit board can
be damaged by static electricity. Do not touch conductive
parts of the device or use adequate ESD protections.
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
Transmitters certified for hazardous area 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.
IMPORTANT
The use of non original spare parts makes the warranty void.
Check whether hazardous materials have been used as
materials to be measured before opening the device. Residual
amounts of hazardous material may still be present in the
device and could escape when it is opened.
Within the scope of operator responsibility, check the following
as part of a regular inspection:
• the pressure-carrying walls / lining of the pressure device
• the measurement-related function
• the leak tightness
• the wear (corrosion)
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
Potential danger if device is disassembled incorrectly!
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.
Carefully read the instructions in the 'Safety', 'Mounting', and
'Electrical connections' chapters, and perform the specified
steps in reverse order.
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