Flowserve OR 52-5 - Manual (Page 7)

7
Important Notes
continued
Warning
Danger
If the measuring transducer and sensor are used in an inexpert or
improper manner by unqualified staff, they can cause danger to life and
limb for the user or for third parties, possibly resulting in death.
During operation, the sensor is under pressure. In this condition, screws,
nuts or bolts must not be slackened. Hot water or steam could flow out and
could cause severe scalding over the entire body.
The sensor might be hot during operation. If it is touched when in the
operational condition, severe burns are possible.
Any installation or removal work may only be performed when the
equipment is at zero pressure and has cooled down. When such work is
to be done, the pressure in the pipes upstream and downstream must
have been reduced to zero and the sensor must have cooled down
sufficiently.
The terminal strips of the measuring transducer are live during operation.
This presents the danger of electric shock. Cut off power supply before
opening the cover or mounting/removing the terminal strips.
It must be ensured that during the work the system section in which
pressure has been reduced to zero cannot be accidentally put back into
operation. The shut-off valves needed for this purpose must be separately
secured and marked. The connection to the energy supply must be
disconnected and must be secured to prevent it from being operated
accidentally. One or more warning notices, for example containing the text
"DO NOT SWITCH ON" must be displayed in a clearly visible manner at
each operating element.