Madas JVAP/NA Manual Del Usuario página 12

Common procedures (threaded and flanged devices):
• With outdoor installation, it is advisable to provide a protective roof to prevent rain from damaging the electrical parts of
the device.
• Prior to carrying out any electrical wiring operations, make sure that the mains voltage matches the supply voltage indicated
on the product label;
• Cut out power prior to proceeding with wiring;
• According to the plant geometry, check the risk of explosive mixture arising inside the piping;
• If the solenoid valve is installed near other devices or as part of an assembly, compatibility between the solenoid
valve and this other device must be evaluated beforehand;
• Avoid installing the solenoid valve near surfaces that could be damaged by the coil temperature. ATTENTION:
the surface temperature could cause contact burns. If it is installed in a domestic environment, it must not be
accessible to unqualified personnel;
• The solenoid valve is suitable for installation in places at low risk of mechanical impact. Provide a protection against
impacts or accidental contacts if the solenoid valve is accessible to unqualified personnel.
3.2 - INSTALLATION (see example in 3.4)
Threaded devices:
• Assemble the device by screwing it, with the due seals, onto the plant with pipes and/or fittings whose threads are consistent
with the connection being attached.
• Do not use the coil (2) as a lever to help you screw it on, only use the specific tool;
• The arrow, shown on the body (8) of the device, must be pointing towards the application;
Flanged devices:
• Assemble the device by flanging it, with the appropriate seals, onto the system with pipes whose flanges are consistent with
the connection being attached. The gaskets must not have any defects and must be centred between the flanges;
• If, after installing the gaskets, there is still an excessive space in between, do not try to reduce said gap by excessively
tightening the bolts of the device;
• The arrow, shown on the body (8) 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 tightening;
• 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;
• Common procedures (threaded and flanged devices):
• For installation positions see the diagram below;
DN 15-20-25
• During installation, prevent 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;
JVAP/NA - JVAP-1-3-6/NA - JVA-1-3-6/NA
Diameter DN 25
Max. torque (N.m) 30
DN 32-40-50
12
Madas Technical Manual - 1|1.7J - REV. 0 of 1
DN 32 DN 40 DN 50
50 50 50
Aug 2019
st