Madas EVQ-1 Mode D'emploi page 18

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 gradually pressurising the plant, check tightness and operation of the solenoid valve by supplying/cutting
off the electricity.
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
Must be carried out with the system stopped and valve NOT electrically powered. It is recommended to wait for the
coil to cool down (if previously powered) and/or, to use suitable thermal protections for hands;
• Adjust the obturator opening speed from the screw (35). Gradually increase opening speed by turning the screw (35)
clockwise. IMPORTANT NOTE Changes to inlet pressure and room temperature can affect valve opening time.
• Adjust the fast stroke by turning the screw (34). By turning it anticlockwise to the stroke end, valve opening will immediately
be slow. By turning it clockwise, it will initially be fast and then slow.
• The flow rate can be adjusted turning the screw (20). Turn it clockwise to decrease the flow rate, and anticlockwise to
increase it.
5.0 - MAINTENANCE
No maintenance operations need to be carried out inside the device.
If the coil and/or electronic board/connector need to be replaced:
• Before performing any operation, make sure that the device is not electrically powered;
• Since the coil is also suitable to be permanently powered, coil heating in case of continuous operation is an entirely
normal phenomenon. It is advisable to avoid touching the coil with bare hands after a continuous power supply
lasting longer than 20 minutes. In case of maintenance, wait for the coil to cool down or, if necessary, use suitable
protections;
NOTE: The coil and/or electronic board/connector replacement operations need to be carried out taking care to ensure the
product's IP65 rating.
EV(Q-R-S-T)-1-3-6
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Madas Technical Manual - 1|1.5d - REV. 1 of 10 Sep 2020
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