CALPEDA Pressure Boosting and Fire-fighting Sets

CALPEDA AUE, AUD, AUED Series Pressure boosting and fire-fighting sets. 
UNI-EN 12845 fire-fighting systems

Units constructed in accordance with UNI-EN 12845 standards for automatic fire-fighting systems (with sprinkler) and according to UNI 10779 for fire-fighting systems with fire hydrants. The units may be composed of 1 or 2 main pumps. Units are fitted with a jockey pump, with which the system pressure level can be maintained without having to start the main pumps.

Application

For feeding water to automatic fire-fighting systems and units with hydrants.

Operation

The pumps start operating after a fall in the pressure level in the fireextinguishing system. The first pump to be triggered is the jockey pump. If this pump cannot restore the pressure level, the main pump starts. When there is more than one main pump, the pumps start in cascade sequence, with the starting pressure switches set at different pressure levels.

The pressure switches of the main pumps are used only for starting, as the pumps must be stopped manually for UNI-EN 12845 units or automatically with a timer for UNI 10779 sets. The recirculation diaphragm allows for operation of the main pumps also when the delivery port is closed (with no consumption of water in the system), avoiding overheating of the water inside the pump body. 

Weekly test (on request) 

The programmable clock in the electric box controls the forced starting of the main pump (electric driven pump only).
The diaphragm avoids overheating of the water in the pump body.