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4.3 - ADJUSTING THE SLOW OPENING (XVR models...)
• The cap (3) must be removed to make the adjustment. The position of fig. 2 corresponds to the maximum opening speed
(preset factory value). Increase the opening time (slow down the actuator speed) by rotating the screw (2) clockwise with
a 14mm socket wrench. NOTE: Changes to the inlet pressure and room temperature can affect the valve opening time.
5.0 - MAINTENANCE
All maintenance operations must be carried out in the absence of an explosive atmosphere.
If the actuator needs to be replaced:
• Before performing any operation, make sure that the device is not electrically powered;
• It is advisable to avoid touching the actuator with bare hands after a continuous power supply lasting longer than
20 minutes. In case of maintenance, wait for the actuator to cool down or, if necessary, use suitable protection;
NOTE: The replacement steps of the actuator must be carried out by taking care to ensure the product's IP65 protection rating.
5.1 - REPLACING THE ACTUATOR UNIT (24)
• Unscrew the fastening screw (17) and move the protective casing upwards (6) into the position shown in fig. 4;
• Loosen the fastening screws (7) and (18). Rotate both microswitches (8) and (19) by 180° as shown in fig. 4 and secure
them temporarily in this position;
• Loosen and remove the fastening screws (5);
• The actuator unit (24) can now be removed (by pulling it upwards);
• Position the new actuator unit (24) in the same position as the previous one and secure it by tightening the screws (5);
• Reposition the microswitches (8) and (19) in the original position (see fig. 1 - microswitch (8) optional);
• If present, position the microswitch (8), rotating it so that when the valve is closed, the disc (20) closes the contact (see Fig. 1);
• Follow the instructions in 4.2 for the flow adjustment switch (19);
• Lower the protective casing (6) and secure it with the screw (5);
• Wire the new actuator unit electrically by following the instructions in 3.2 and 6.2;
• Energise and de-energise the solenoid valve 2 or 3 times, verifying its complete opening and closure, thereby testing it
functions correctly after maintenance is performed.
6.0 - CPI SWITCH
If the solenoid valve comes with the CPI switch, the position of the sensor is already calibrated and therefore set for operation.
Just connect electrically to the cable (29) marked with "CPI SWITCH".
Follow the instructions in paragraph 6.2.
6.1 - CPI SWITCH TECHNICAL DATA
• Ambient temperature
• Switchable voltage
• Switchable current
• Protection rating
6.2 - CPI SWITCH WIRING
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 zone, 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;
• Connect the CPI cable (29) in series to the signalling device (see diagram 2 - fig. 5).
XVF-1-3-6 - XVR-1-3-6
: -20 ÷ +60°C
: max 250 V (Vac)
: max 2 A
: IP67
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Madas Technical Manual - 1|1.5eX - REV. 0 of 1
CPI wiring diagram
SPDT
Aug 2019
st
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