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• To calibrate the microswitch loosen the fastening nut (
4
) and position (by screwing on or off) the adjustment ring nut (
6
)
so that, with the solenoid valve in a closed position, the microswitch provides the signal;
• Secure the adjustment ring nut (
6
) in that position by tightening the nut (
4
);
• The kit is now installed. Open and close the solenoid valve (by supplying and cutting off power) 2-3 times to make sure the
microswitch is signalling correctly.
2.3 - INSTALLATION IN PLACES WHERE THERE IS THE RISK OF EXPLOSION (DIRECTIVE 2014/34/EU)
The CPI switch complies with Directive 2014/34/EU as a device of group II, category 3G and as device of group II, category
3D; consequently, it is suited for installation in zones 2 and 22 as classified in Annex I of Directive 99/92/EC. The CPI switch is
NOT
suitable for use in zones1, 21, 0 and 20, as defined in aforementioned Directive 99/92/EC. To determine the qualification
and size of the hazardous zones, please refer to standard IEC EN 60079-10-1.
If installed and subject to maintenance in full compliance with all conditions and technical instructions provided in this manual, the
device does not pose a source of specific hazards: in particular, under conditions of normal operation, it is not expected for the
solenoid valve to emit a flammable substance into the atmosphere with methods such as to originate an explosive atmosphere.
During installation and maintenance, it is imperative to comply with the Ex standards, in particular EN 60079-14. Electrical
installation must be carried out by authorised personnel in accordance with relative national regulations.
Do not install the appliance in explosive atmospheres except for the specified gas and dust groups and areas (as explained
in section 2.0).
The subsequent application of a non-conductive coating with a thickness of > 0.2mm on the external surface prohibits its use
in environments with potentially explosive atmospheres where group IIC Gases are present. The thickness of the coating must
be < 2mm for group IIB.
For group III it is necessary to take appropriate precautions to prevent the accumulation of electrostatic charges (e.g. cleaning
with an antistatic cloth, etc.).
