ES
FR
EN
IT
12
Madas Technical Manual
- 5|5.3b - REV. 0 of 2
th
Sep 2019
RG/2MCSH - RG/2MBHZ
1.0 - GENERAL INFORMATION
This manual explains how to safely install, operate and use the device.
The instructions for use must
ALWAYS
be available in the facility where the device is installed.
ATTENTION: installation/maintenance must be carried out by qualified staff (as specified in section
1.3) using suitable personal protective equipment (PPE).
For any information pertaining to installation/maintenance or in case of problems that cannot be solved with the instructions,
contact the manufacturer at the address and phone numbers provided on the last page.
1.1 - DESCRIPTION
Device which supplies a preset and constant “downstream” pressure value (Pa) (within the intended operating limits) when
the inlet pressure (Pe) and/or the flow rate (Q) changes. The compensated obturator assures precision in adjusting the outlet
pressure (Pa) even in the event of high and sudden changes in the inlet pressure.
These regulators are used in systems where natural gas, LPG or other non-corrosive gases (dry gases) are used.
Reference standards: EN 88-2 – EN 13611.
They can be fitted with the following safety devices and accessories according to the system requirements:
• downstream overpressure shut off device (OPSO - models RG/2MBH...):
stops supply when the regulator
outlet pressure exceeds the calibration setting of the device. The OPSO device is always fitted on these devices.
• downstream minimum pressure shut off device (UPSO - models RG/2MBH...):
stops supply when the
regulator outlet pressure drops below the calibration setting of the device. It also operates in the event of an upstream
supply outage. They can also be supplied without the UPSO device.
• relief valve:
discharges small gas flows outwards if overpressure occurs downstream of the regulator. This discharge
can be conveyed outwards if the installation is in a poorly ventilated environment. They can also be supplied without the
relief valve.
• outlet pressure test nipple.
1.2 - KEY TO SYMBOLS
ATTENTION:
Attention
is drawn to the technical
details intended for
qualified personnel.
DANGER:
In the event of non
compliance, this may cause damage to
property, as well as harming people and/
or pets.
DANGER:
In the event
of non compliance, this
may cause damage to
property.
1.3 - QUALIFIED PERSONNEL
These are people who:
• Are familiar with product installation, assembly, commissioning and maintenance;
• Know the regulations in force in the region or country pertaining to installation and safety;
• Have first-aid training.
1.4 - USING NON-ORIGINAL SPARE PARTS
• ONLY
manufacturer-recommended parts must be used to perform maintenance or to replace spare parts (e.g. spring, filter
element, etc.). Using different parts not only voids the product warranty, but might impair correct operation.
• The manufacturer is not liable for malfunctions caused by unauthorised tampering or use of non-original spare parts.
1.5 - MISUSE
• The product must only be used for the purpose it was built for.
• It is not allowed to use fluids other than those expressly stated.
• The technical data on the rating plate must not, under any circumstances, be exceeded. The end user or installer is responsible
for implementing correct systems to protect the device, which prevent exceeding the maximum pressure indicated on the rating
plate.
• The manufacturer is not responsible for any damage caused by misuse of the device.
