Avoid personal injury and property damage from any sudden release
of process pressure. Before performing any maintenance operations:
l Disconnect any operating lines providing air pressure, electric
power, or a control signal to the actuator. Be sure the actuator
cannot suddenly open or close the valve.
l Do not remove the actuator from the valve while the valve is still
pressurised.
l Use bypass valves or completely shut off the process to isolate the
valve from process pressure. Relieve process pressure on both
sides of the valve. Drain the process media from both sides of the
valve.
l Check with your process safety engineer for any additional
measures that must be taken to protect against process media.
Ensure that chemicals that come in direct contact with valve assembly
and its components are compatible with the valve body, actuator,
diaphragm, to be used in the fluid path. If you need assistance please
contact your local sales office.
Exterior surfaces of the valve may become hot during operation. The
unit should be allowed to cool prior to conducting any repositioning or
maintenance operations.
Do not open the valve clamp during steaming or while the valve is
under pressure.
Important: Pneumatic actuators should have their seals replaced every
3 years for standard actuators and every year for ATEX actuators.
Manual actuators should have their seals replaced every 10 years. See
"Parts list" on page37, for replacement kit part numbers.
The valve and actuator surfaces will be hot following sterilisation in an
autoclave and may cause injury when handled. Suitable personal
protective equipment must be worn and care must be taken when
handling the valve and actuator.
m-radialdiaphragmvalve-en-02 5
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