Table of Contents
Advertisement
82
266CRH / 266CRT, 266CSH / 266CST MULTIVARIABLE PRESSURE TRANSMITTER | OI/266CXX/MODBUS-EN REV. A
11 Repair
Safety instructions
WARNING
Bodily injury!
Transmitters with explosion protection must be either
repaired by the manufacturer or approved by a certified
expert after the repair.
•
Comply with the relevant safety regulations and take the
appropriate safety precautions before, during, and after
repair work.
WARNING
Bodily injury!
The device can be operated at high pressure and with
aggressive media. Any medium that squirts out can cause
severe injuries.
•
Depressurize the pipeline/tank before opening the
transmitter connection.
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 Safety, Mounting, and
Electrical connections, and perform the specified steps in
reverse order.
NOTICE
Damage to components!
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 before touching electronic components.
Spare parts
Repair and maintenance activities may only be performed by
authorized customer service personnel.
When replacing or repairing individual components, use original
spare parts.
Note
Spare parts can be ordered from ABB Service:
Please contact Customer Center Service acc. to page 5 for
nearest service location.
Opening and closing the housing
NOTICE
If the O-ring gasket is seated incorrectly or damaged, this
may have an adverse effect on the housing protection class.
Follow the instructions in Opening and closing the housing
on page 25 to open and close the housing safely.
After tasks on the transmitter housing, for devices with 'Ex d'
type of protection strictly ensure that the housing cover is
safeguarded again.
To do this, a safety screw (hexagon socket screw) is provided on
both facing sides of the electronics housing, at the bottom.
Advertisement
Table of Contents
