CHECK
Regulator without VIS and without VES
Check that the valve (V1) at the inlet to the regulator (R), the valve (V3) at the outlet to the regulator and the bleed
valve (V2) are closed.
Slowly open the inlet valve (V1) and use the pressure gauge (M1) to check that the pressure is correct at the inlet to the
regulator (R). Use the pressure gauge (M2) to check that the pressure increases at the inlet to the regulator (R) until it
is stabilised to the adjusted pressure in the regulator (R).
Close the inlet valve again (V1)
Use the inlet pressure gauge (M1) to check that there are no leaks at the inlet to the regulator (R)
Use the outlet pressure gauge (M2) to check that there are no leaks at the outlets of the regulator (R)
Regulator without VIS and with VES
Make the adjustments described above
Connect an external source of pressure via the bleed valve (V2) in the tank located along the stretch between the outlet
to the regulator (R) and the outlet valve (V3).
Slowly increase the pressure until the VES is activated. If it is necessary to vary the firing point of the VES, make the
appropriate adjustments at the inspection hole (4)
Regulator with VIS at minimum
Make the adjustments described above
Start up the regulator (R), checking that the outlet has the correct regulation pressure.
Close the gas inlet valve (V1) and slowly reduce the pressure to the outlet via the bleed valve (V2) until the minimum
pressure VIS valve is activated. If it is necessary to vary the firing point of the VIS, make the necessary adjustments at
the inspection hole (9)
Regulator with VIS at maximum
Make the adjustments described above
Connect an external source of pressure via the bleed valve (V2) in the tank located along the stretch between the outlet
to the regulator (R) and the outlet valve (V3).
Slightly increase the pressure in the tank until you see that the VIS maximum pressure valve is activated. If it is
necessary to vary the firing point of the VIS, make the necessary adjustments at the inspection hole (8).
PROBLEMS, CAUSES AND SOLUTIONS
The regulator does not close
Dirt in the regulating bar
o
External filter (F1) in poor condition, clean filter and closing bar
Damaged rubber seat disc or orifice
o
Replace regulator
Internal mechanism dirty or worn
o
Replace regulator
The maximum pressure safety valve discharges
The seat disc or orifice it is not watertight
o
Possible dirt in the seat disc
Water hammering at the outlet, due to abrupt closure of electro valves or manual shut-off valves
o
Small tank outlet
o
Reduce this effect by installing a VES valve in the regulator outlet tank.
Where there is no flow, increase the temperature in the outlet stretch due to the sun or nearby sources of heat.
o
Eliminate sources of heat and activate the VES below the maximum VES
The minimum pressure safety valve discharges
The outlet pressure is adjusted below or very close to the minimum safety adjustment level
o
Reduce the taring of the minimum VIS
Excessive flow for the inlet and outlet pressure values available in the regulator.
o
Lower the flow requested.
o
Increase the inlet pressure.
Very high instant consumption
o
Raise the volume of the tank situated at the regulator outlet
