18
ES
FR
EN
IT
XV(F)-1-3-6
Madas Technical Manual
- 1|1.5cX - REV. 1 of 10
th
Sep 2020
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;
• Clean the product regularly to prevent dust from building up;
• It is essential to eliminate the risk of ignition caused by stray currents or any condition of potential difference between the
devices fitted on the system. Periodically check that there is good electrical conduction between the valve body and the
equipotential plant line and between the coil and the equipotential plant line.
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 XVF...)
• The flow adjustment (if present) can be done with the system stopped and the 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;
• To adjust the flow, you must loosen and remove the coil fastening ring nut (
17
) and use the adjustment screw (
18
). On
completion, tighten and secure the fastening ring nut (
17
) in its original position.
5.0 - MAINTENANCE
All maintenance operations must be carried out in the absence of an explosive atmosphere.
No maintenance operations need to be carried out inside the device.
If the coil 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 replacement operations need to be carried out taking care to ensure the product’s IP65 rating.
