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Operating instructions
WARNING
Risk of injury due to inadequate maintenance work.
Incorrect maintenance can lead to serious injury and considerable material damage!
Before the start of work, ensure there is sufficient room for doing the work.
Ensure the space around the work is tidy and clean! Parts and tools in loose piles or lying around
are sources of accidents.
If parts have been removed, take care to assemble correctly and re-install all attachment items.
Before putting back into service, ensure:
All maintenance work has been performed and completed.
There are no persons in the hazard area.
All covers and safety devices are installed and operating correctly.
CAUTION
Cold/hot pipelines and/or valves.
Risk of injury due to thermal influences!
Isolate the valve.
Attach warning signs.
Medium escaping at high speed and high/low temperature.
Risk of injury!
Wear the prescribed protective equipment.
NOTICE
Impermissible stress due to operating conditions and extensions / added structures.
Valve body leaking or broken!
Provide suitable support.
Additional loads, such as traffic, wind or earthquakes, are not explicitly taken into account by
default and require separate dimensioning.
Condensation in air conditioning, cooling and refrigeration plants.
Icing!
Blocking of the actuation mechanism!
Damage due to corrosion!
Insulate the valve with diffusion-tight material
Improper handling.
Leak or damage to the globe valve!
Do not store tools and/or other objects on the valve.
Do not use tools to increase the torque of the handwheel.
Painting of valves and pipelines.
Impairment of the function of the valve / loss of information!
Protect stem, plastic parts and type plate against the application of paint.
Impermissible stress.
Damage to the control mechanism!
Do not use the valve as a foothold.
Exceeding the maximum permissible operating conditions.
Damage to the valve!
The maximum permissible working pressure must not be exceeded, and the minimum and maximum
allowable working temperatures must be observed.
Lay the welding/brazing bead in several sections so that the heat build-up in the middle of the body
does not exceed the maximum permissible operating temperature.
Particles and other contaminants in the conveyed medium.
Damage to the valve / internal leak!
Remove particles/contaminants from the conveyed medium.
It is recommended to install strainers / dirt filters in the pipework system.
Incorrect earthing during welding work in the pipeline.
Damage to the valves (burned spots)!
Remove bonnet during welding.
Do not use any parts of the valve for earthing during electric welding work.
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