Madas EVF-1 EEX Serie Manual Del Usuario página 13

4.0 - FIRST START-UP
• Before start-up make sure that all of the instructions on the rating plate, including the direction of flow, are observed;
• After having gradually pressurised the system, check tightness and operation of the solenoid valve, electrically
powering / disconnecting the actuator.
4.1 - RECOMMENDED PERIODIC CHECKS
• Use a suitable calibration tool to ensure the bolts are tightened as indicated in 3.2;
• Check tightness of the flanged/threaded connections on the system;
• Check tightness and operation of the solenoid valve;
It is the responsibility of the final user or installer to define the frequency of these checks based on the severity of the service conditions.
4.2 - ADJUSTMENTS (Models EVF...)
• Flow rate adjustment (if applicable) is achieved with the system stopped and the valve NOT electrically powered.
It is recommended to wait for the actuator to cool down (if previously powered) and/or to use suitable protections
for the hands against heat;
• To make this adjustment, you need to unscrew the actuator fastening nut (11) and turn the adjustment screw (12). When
you are finished, tighten and secure the fastening nut in its original position.
5.0 - MAINTENANCE
No maintenance operations need to be carried out inside the device.
If the actuator and/or connector need to be replaced:
• Before performing any operation, make sure that the device is not electrically powered;
• Since the actuator is also suitable to be permanently powered, actuator heating in case of continuous operation is
an entirely normal phenomenon. 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 protections;
NOTE: The actuator replacement operations need to be carried out taking care to ensure the product's IP rating.
5.1 - REPLACING THE ACTUATOR
• Loosen the screw (or nut) (11) that locks the actuator (10) and take it out from the armature assembly along with the seals/
discs;
• Place the new actuator + seals + discs inside the armature assembly and secure with the relative screw (or nut);
6.0 - CPI SWITCH
The microswitch that signals the closed position (CPI SWITCH) is a magnetic proximity sensor with normally open contact. It
provides a signal when the valve obturator closes.
If the solenoid valve comes with the microswitch, the position of the sensor is already calibrated and set; therefore, for operation
you simply need to connect it to the power supply.
If it comes separately and is installed at a later time on a solenoid valve with CPI set-up it is necessary to unscrew the cap
under the valve body, screw the CPI kit and calibrate it in order to obtain the signal when the valve is closed.
6.1 - CPI SWITCH TECHNICAL DATA
• Ambient temperature
• Switchable voltage
• Switchable current
• Switchable power
• Resistance
• Protection rating
• Certification
* Reed switches are not suitable for direct switching of lighting, power supplies, drives, etc.
Additional coupling with protective relays use.
Madas Technical Manual - 1|1.6a - REV. 0 of 10
: -20 ÷ +60 °C
: max 250 V AC/DC
: max 1 A
: max 60W / VA*
: 200 mΩ
: IP67
: (ATEX): II 2 G Ex mb II T6 / KEMA 02ATEX1288 X
(IECEx): Ex mb II T6 / IECEx KEM 08.00009X
Dec 2021
th
13
CPI wiring diagram
BN
GY
BK
open valve BK / BN
closed valve BK / GY
EV(F)-1 EEX