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6.1 - REPLACING THE COIL
• Loosen the screw (19) that locks the coil (18) 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.
6.2 - REPLACING THE FILTER ELEMENT (DN 65 - DN 80 - DN 100 - DN 125 - DN 150)
• Loosen (see fig.1) the fastening screws (3) and very carefully remove the cover (2) from the valve body (5);
• Extract the filter element and check its conditions. Blow it and clean it and, if necessary, replace it (see fig. 5 and 6 for positioning);
• Check the status of the cover's O-Ring and replace if necessary;
• Make sure the cover's O-ring seal is inside the provided groove;
• Reassemble the cover and secure it in its original position, being very careful not to "pinch" or damage the O-ring during tightening;
• Tighten the screws gradually, following a "cross" pattern, until the torque (tolerance -15%) indicated in the table below is
reached. Use a calibrated torque wrench to do this;
Screw
Max. torque (N.m)
• Check the body/cover seal;
NOTE: for internal inspections (see fig.1), it is recommended:
• also check the obturator's (11) integrity and, if necessary, replace the rubber seal (10);
• replace the seals 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. 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:
M16/RMX N.C.
M5
M6
Stain.
Galvanised
Galvanised
STEEL
6
4,5
10
: -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
M8
Stain.
Stain.
Galvanised
STEEL
STEEL
7,5
25
18,5
16
Madas Technical Manual - 2|2.1cX - REV. 0 of 1
M10
M12
Stain.
Galvanised
Galvanised
STEEL
49,5
37
84,5
CPI electrical diagram
SPDT
Stain.
STEEL
63,5
Aug 2019
st
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