Madas RG/2MCS Manual Del Usuario página 19

6.1 - Adjusting the outlet pressure (Pa)
The outlet pressure Pa (unless specifically requested) is factory-set with the regulator installed as indicated in 3.4 and with
the adjustment screw (2) set approximately at the minimum setting value. The safety shut offs/relief valve are set accordingly;
If the regulator is installed in different positions, check and reset the outlet pressure Pa, and consequently the devices
incorporated in the regulator;
Adjust the outlet pressure as follows:
• in versions with relief (fig.1 and 3), act directly on the adjustment screw (2); in versions without relief (fig.1 and 3) it is necessary,
before proceeding, to loosen the cap (1). In the piloted versions (fig.3) it is still necessary to loosen the cap (1).
• Unscrew the adjustment screw (2) and set it to the minimum setting allowed;
• Start the system or make sure there is a minimum flow downstream of the regulator;
• To increase the pressure calibration downstream of the regulator, tighten the adjustment screw (2) to the desired value.
Perform the reading with a calibrated pressure gauge, installed downstream of the regulator to at least 5 DN (see examples
in 3.4);
• If it has been removed, screw the cap (1) back on and if necessary, seal it in that position using the appropriate seal holes
(if any);
• Use pressure outlets (12) on the device only for zero flow or very low flow measurements.
6.2 - Adjusting the minimum pressure shut off (UPSO)
NOTE: to act on the UPSO adjustment screw (26), it is necessary to remove (by loosening it) the reset pin (25) and then
tighten it again to reset the device.
• Unscrew the cap (23);
• Use the supplied key (29) to loosen the adjustment ring nut of the minimum shut off (26) to the minimum;
• Start the system and reset the shut off device as described in 4.0;
• Reduce the downstream pressure to the desired trigger value;
• Use the supplied key (29) to tighten the adjustment ring nut (26) until the minimum pressure shut off is triggered.
• Reset the system by following the correct procedure and verify that the trigger value is that desired by repeating the release
step 2-3 times;
• If necessary, adjust the trigger value by turning the ring nut (26) with the specific key (29);
6.3 - Adjusting the maximum pressure shut off (OPSO)
• Unscrew the cap (23);
• Use the supplied key (29) to fully tighten the adjustment ring nut of the maximum shut off (24). To do this, if necessary,
remove (by loosening it) the reset pin (25)*;
• Start the system, reset the shut off device as indicated in 4.0 and make sure that there is no gas consumption (close the
applications downstream of the regulator);
• Use an auxiliary gas pressure to slowly increase the downstream pressure to the desired value and simultaneously, use the
key supplied (29) to loosen the ring nut (24) until the device is triggered (so as to avoid having to set the Pa again);
• In both cases, reset the system by following the correct procedure and verify that the trigger value is that desired by repeating
the release step 2-3 times;
• If necessary, adjust the trigger value by turning the ring nut (24) with the specific key (29).
* It must be tightened again in the original position to reset the device.
Madas Technical Manual - 5|5.2b - REV. 0 of 2
19
Sep 2019
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RG/2MCS - RG/2MBZ