Manual

20
danger
Risk of injury due to electrical voltage.
• Shut down and isolate the electrical power source
before carrying out work on the system.
• Observe all applicable accident protection and safety
regulations for electrical equipment.
Warning
Risk of injury due to non-conforming installation.
• The electrical and fluid installation can only be carried
out by qualified and skilled staff with the appropriate
tools.
• Observe mounting instructions of the fitting.
Risk of injury due to an uncontrolled restart.
• Ensure that the restart of the installation is controlled
after any interventions on it.
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Warning
Risk of injury if the fluid pressure/ temperature
dependency is not respected.
• Take the fluid pressure / temperature dependency into
account according to the material of the fitting (see the
operating instructions of the fitting used).
• Comply with the Pressure Directive 97/23/EC.
Warning
Risk of injury due to nonconforming commissioning.
Non conforming commissioning may lead to injuries and
damage the device and its surroundings.
• Before commissioning, make sure that the staff in
charge have read and fully understood the contents of
the manual.
• In particular, observe the safety recommendations and
intended use.
• The device / the installation must only be commissio-
ned by suitably trained staff.
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22
note
Risk of damage to the device due to the environment
• Protect this device against electromagnetic interfe-
rence, ultraviolet rays and, when installed outdoors, the
effects of the climatic conditions.
To make sure the device operates correctly, plug in
and tighten the connector.
Installation onto the pipe
→ Select an appropriate fitting regarding to the flow
velocity and the flow rate of the fluid in the piping, see
the following graphs (see page 24). The graphs are
used to determine the DN of the pipe and the fitting
appropriate to the application.
→ Install the fitting on the pipe as described in the ope-
rating instructions of the fitting used.
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Example:
• Specification:
- nominal flow rate: 10 m
3
/h,
- ideal flow velocity: between 2 and 3 m/s.
• Solution: intersection between flow rate and flow velocity
in the graph gives the appropriate pipe diameter, DN40
(or DN50 for the asterisked fittings).
* For the fittings:
• with external thread connections acc. to SMS 1145,
• with welding end connections acc. to SMS 3008,
BS 4825 / ASME BPE or DIN 11850 Rg 2,
• Clamp connections acc. to SMS 3017/ ISO 2852, BS
4825 / ASME BPE or DIN 32676
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