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4. Open the on-off ball valve mounted on the pump connection.
5. Open the three-way valve.
6. Check and regulate the network air pressure when the pump is running: MIN 2 bar
MAX 7 bar; max 5 bar for pumps with rubber balls.
7. To regulate the speed of the pump according to the fluid viscosity, you can
operate in two ways:
A. regulate the network air pressure
B. choke the air volume (flow rate) by means of the on-off valve mounted on the
pump
never start the pump with the product valves (intake
and delivery) closed: DANGER OF DIAPHRAGM
BREAKAGE.
If the pump has negative suction, reduce the speed
of the pump using the ball valve on the sir supply.
if the pressure is below 2 bars when the pump is run-
ning, the pump may STALL. At a pressure higher than
the MAXIMUM threshold, yielding and leakages of
the product under pressure may occur and/or the
pump may break.
WARNING
WARNING
CAUTION
5
min 2 bar
max 7 bar
4
6
unprimed pumps have a negative suction head
capacity that varies according to the type of dia-
phragm and packing mounted. PLEASE CONTACT
THE MANUFACTURER’S CUSTOMER ASSISTANCE
SERVICE FOR FURTHER DETAILS.
REMARK
7A
7B
