The cartridge containing the operating mechanisms, protected by a large
surface area strainer, is removable. This makes it very easy and quick
to carry out inspections, internal cleaning and even replacement of the
cartridge itself. Water intake is proportional to the air vented from the system.
1. Filling unit can be installed in either horizontal or vertical position. It is,
however, vital that the unit is not installed upside down.
2. The special method of mechanical pre-adjustment with pressure setting
indicator makes it possible to set the unit to the required value in the
system before the beginning of the filling phase.
3. The unit is normally set at a pressure not less than that obtained by
adding the hydrostatic pressure and 4 psi (0,3 bar).
4. During filling, the internal mechanism will automatically regulate the
pressure until it reaches the required value, without the need to
oversee the filling operation itself. This prevents the system being
charged to a higher pressure than required.
5. Given the pre-calibrating function, the presence of the downstream
pressure gauge is not essential.
6. When the system is filled, the shut-off valve can be closed. In order to
restore the automatic topping-off condition, merely re-open the valve. The
pressure in the system will gradually return to the set pressure.
Removable filter
cartidge
Installation
For cleaning, inspection or replacement of the entire
cartridge, proceed as follows:
1. Isolate the unit.
2. Open the lower control knob.
3. Unscrew the adjusting screw until it stops.
4. Remove the upper cover.
5. Extract the cartridge using pliers.
6. The entire unit, after inspection, can be
reassembled or replaced using a spare cartridge.
7. Re-adjust the equipment.
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5
Maintance
3
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