First Start-Up - Madas AGP/RC Serie Manual Del Usuario

4.0 - FIRST START-UP

Before commissioning, verify that:
• all of the instructions on the rating plate, including the direction of flow, are observed;
• IMPORTANT: The leak test of the piping must be performed without subjecting the membrane of the regulator
(therefore, the downstream pipe section) to a pressure higher than 300 mbar. Use special manual gas closing
devices to avoid damaging the regulator;
• The pressurisation manoeuvre of the equipment must be carried out very slowly so as to avoid possible damage.
• Slowly open the upstream shut-off devices (e.g. solenoid valves, OPSO shut-off valve, etc.);
• Check the tightness of all the system gaskets and check the internal/external tightness of the regulator;
• Calibrate the regulator as indicated in 5.0
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 regulator;
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
5.1 - GAS/AIR RATIO = 1:1 (fig. 1)
This connection is used when the system requires the gas pressure to be the same as the air pressure.
• For applications as a gas/air ratio =1:1 regulator, the upstream gas pressure must be higher than the maximum control
pressure.
• The ratio regulator is operated by the air line pressure. The gas outlet pressure is regulated in ratio 1:1 with respect to the
control air pressure.
• The burner power can be varied with the air regulation element.
• Fluctuations of the pressure in the combustion chamber act in the same way on the gas and air flow. This way the gas/air
mixture does not change.
• Turn the adjustment screw (7) to calibrate the regulator, using a pressure gauge to check the gas outlet pressure and the
air pressure.
5.2 - GAS/AIR RATIO = 1:2 - 1:10 (fig. 2 - "R" VERSION)
This connection is used when the system requires the gas pressure to be lower than the air pressure.
• The ratio regulator is operated by the air line pressure. The gas outlet pressure is regulated in a proportional ratio adjustable
from 1:2 to 1:10 with respect to the control air pressure.
• The burner power can be varied with the air regulation element.
• Before installing the proportional ratio kit (12), the gas/air ratio = 1:1 regulator must be correctly calibrated (see fig. 1).
• Ensure the vent hole (11) (in air) is not obstructed.
• Turn the adjustment screw (14) to obtain the required gas/air ratio, using a pressure gauge to check the gas outlet
pressure and the air pressure.
Madas Technical Manual - 4|4.5 - REV. 0 of 10
15
Oct 2018
th
AGP/RC - AG/RC