Madas M16/RMX N.A. Manuel Technique page 16

6.1 - REPLACING THE COIL
• Loosen the screw (12) that locks the coil (13) and take it out of the armature assembly along with the gaskets/discs;
• Place the new coil + gaskets + discs inside the armature assembly and secure with the relative screw;
If internal checks must be carried out, before carrying out any operations:
• Close the gas upstream of the valve;
• Make sure there is no pressurised gas inside the device.
NOTE: No maintenance operations need to be carried out inside the device.
If an internal inspection is required, it is advisable to:
• Also check the integrity of the obturator (9) and, if necessary, replace the rubber seal (8);
• Replace the gaskets before reassembling.
7.0 - CPI SWITCH
If the solenoid valve comes with CPI, the position of the micro switch is already calibrated and set, therefore, for operation you simply
need to connect it to the power supply. If it is supplied separately (as a kit), it must be installed on the solenoid valve and then calibrated.
In both cases, follow the instructions in 7.2.
7.1 - CPI SWITCH TECHNICAL DATA
• Ambient temperature
• Switchable voltage
• Switchable current
• Protection rating
• Protection mode
• Cable length
7.2 - CPI SWITCH INSTALLATION and CALIBRATION
• black cable: common
• brown cable: signal with micro switch not pressed
• grey cable: signal with micro switch pressed
It is necessary to work in a non-explosive atmosphere and shut off the gas before installation.
• ATTENTION: The CPI switch is supplied with a 3 metre long pre-wired connection cable (11). This cable CANNOT be
replaced with a different one. In the event of damage, the part must be disposed of and replaced with an identical new one;
Any repair (if possible) can only be carried out by the manufacturer;
• In the dangerous area, wire the ends of the cable with explosion-proof approved equipment (E.g. Terminal box with "E"
protection or increased safety according to EN 60079-7) using the special wire terminals.
if the CPI kit is supplied separately, you must proceed as follows to install in on the solenoid valve (see fig. 4):
• Use the knob (1), to insert the eccentric ring nut (21) with the larger part of the half moon on the left and the fastening
grub screw holes facing up;
• Secure the eccentric ring nut (21) by tightening the 2 grub screws (15);
• Loosen the 2 screws (22) of the upper cover (17);
• Secure the support bracket (14) of the micro switch (19) to the upper cover, using the screws (22);
• Tighten or loosen the micro switch (19) for calibration so that when the solenoid valve is closed, the micro switch's pin is pressed;
• Secure the micro switch (19) in that position by tightening the 2 threaded grub screws (18);
• The kit is now installed. Reset and close the solenoid valve (by cutting off the power) 2-3 times to make sure the microswitch
is signalling correctly;
• Position the cover of the knob (2) and secure it in that position with the screw (23).
M16/RMX N.A.
: -20 ÷ +60 °C
: max 250 V (Vac)
: max 2 A
: IP65
: II 3G Ex nC IIC T6 Gc X - II 3D Ex tc IIIC T85°C Dc X
: 3m provided
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Madas Technical Manual - 3|3.2dX - REV. 0 of 1
CPI electrical diagram
SPDT
Aug 2019
st