First Start-Up - Madas MVS/1 Manual De Instrucciones

3.4 - GENERIC EXAMPLE OF AN INSTALLATION
1. M16/RM N.C. Manual reset solenoid valve
2. SM jerk ON/OFF valve
3. FM gas filter
4. OPSO series MVB/1 MAX shut off valve
5. RG/2MC pressure regulator
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1
* if the zone is ATEX classified follow the indications of 3.3

4.0 - FIRST START-UP

• Before start-up, make sure that all the instructions on the rating plate, including the direction of flow, are observed;
• After having gradually pressurised the system, check the tightness and operation of the valve.
4.1 - RECOMMENDED PERIODIC CHECKS
• Use a suitable calibrated tool to ensure the bolts are tightened as indicated in 3.2;
• Check the tightness of the flanged/threaded connections on the system;
• Check the tightness and operation of the valve;
The final user or installer is responsible for defining the frequency of these checks based on the severity of the service conditions.
5.0 - CALIBRATION
Calibration example for a relief valve installed downstream of a RG/2MC regulator:
- regulator outlet pressure: 20 mbar
- block valve calibration: 50 mbar
- relief valve calibration: 40 mbar
Proceed as follows (see fig. 1):
• Loosen and remove the closing cap (1);
• Tighten the adjustment screw (2) to the maximum;
• Adjust the regulator outlet pressure (using the adjustment screw) to the desired relief pressure value (in this case 40 mbar);
• Loosen the adjustment screw (2) of the relief valve until it starts to discharge gas;
• The valve is now calibrated, restore the calibration valve of the regulator (in this case 20 mbar) and close the closing caps
of the devices.
MVS/1 - MVSP/1
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6. MVS/1 relief valve
7. Pressure gauge and relative button
8. Gas detector
9. SM remote jerk ON/OFF valve lever control
10. Expansion joint/anti-vibration mount
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4
5
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Madas Technical Manual - 7|7.4 - REV. 1 of 28
discharge in open air
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May 2019
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