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3.2 - INSTALLATION (see example in 3.4)
• Assemble the device by flanging it, with suitable seals, onto the plant with pipes whose flanges are consistent with the
connection being attached. The gaskets must be free from defects and must be centred between the flanges;
• If, after installing the gaskets, there is still too much space in between, do not try to reduce said gap by excessively tightening
the bolts of the device;
• The arrow, shown on the body (16) of the device, needs to be pointing towards the application;
• Insert the relative washers inside the bolts in order to prevent damage to the flanges during the tightening stage;
• When tightening, be careful not to "pinch" or damage the gasket;
• Tighten the nuts or bolts gradually, in a "cross" pattern (see the example below);
• Tighten them, first by 30%, then by 60% and finally 100% of the maximum torque (see the table below according to EN
13611);
• Tighten each nut and bolt again clockwise at least once, until the maximum torque has been achieved uniformly;
• The device must be installed with the horizontal pipe and actuator facing upwards (see figures below);
• During installation, avoid debris or metal residues from getting into the device;
• To guarantee mechanical tension-free assembly, we recommend using compensating joints, which also adjust to the pipe's
thermal expansion;
• If the device is to be installed in a ramp, it is the installer's responsibility to provide suitable supports or correctly sized
supports to properly hold and secure the assembly. Never, for any reason whatsoever, leave the weight of the ramp resting
only on the connections (threaded or flanged) of the individual devices;
• In any case, following installation, check the tightness of the plant;
• Wiring cannot have cables connected directly to the actuator. ALWAYS and ONLY use the connector identified or
supplied by the manufacturer;
• Before wiring the connector (30), unscrew and remove the central screw (32). Use the designated cable terminals (see
figures below). NOTE: The connector wiring (30) needs to be carried out by ensuring the product's IP65 protection rating;
Madas Technical Manual - 1|1.5e - REV. 0 of 10
Diameter
Max. torque (N.m)
11
May 2018
th
> DN 150
160
EVF-1-3-6 - EVR-1-3-6
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