JUMO 405071, Руководство по эксплуатации

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5.3 Pressure connection
Tightness
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Using joints and material of appropriate shape , for eg. according to
EN 837 and DIN 16258 !
After the establishment of the connection to the process, the tightness must be
checked!
If the pressure switch is screwed into a tapped orifice, must to use the total
length of the filetage of pressure converter must be used.
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The couple depends on the size, material and shape of the seal used and of
taking pressure of the pressure converter.
Do not make use of the casing of a pressure switch in order execute a tightening
the process connection but use a key on the flat. (opening of key : 17 mm)