M0217 EN
31
EN
N2 PIPING CONNECTIONS
FOREWORD
- Before carrying out any connection, refer to the visual indications i.e.
arrow on the pump head, to identify suction and delivery.
ATTENTION
Wrong connection can cause serious pump
damage.
PRELIMINARY
INSPECTION
- Before connection, make sure that the piping and the suction tank
are free of dirt and solid residue that could damage the pump and its
accessories. NEVER COLLECT THE FLUID FROM THE BOTTOM OF THE
TANK SINCE IT MAY CONTAIN IMPURITIES
- Before connecting the delivery pipe, partially fill the pump body, from
delivery side, with the liquid that needs to be pumped in order to faci-
litate priming.
- Do not use conical threaded fittings, which could damage the threa-
ded inlet or outlet openings of the pump if excessively tightened.
O
INITIAL START-UP
FOREWORD
- Check that the quantity of fluid in the suction tank is greater than the
amount you wish to transfer.
- Make sure that the residual capacity of the delivery tank is greater than
the quantity you wish to transfer.
- Make sure that the piping and line accessories are in good condition.
NOTE
THIS PUMP IS NOT PROVIDED FOR FURTHER REGULATION
OF DELIVERY AND PRESSURE
ATTENTION
Fluid leaks can damage objects and injure persons.
NOTE
- Never start or stop the pump by connecting or cutting out
the power supply.
- Prolonged contact with some fluids can damage the skin.
The use of goggles and gloves is recommended.
IF THE PUMP
DOES NOT
PRIME
Depending on the system characteristics, the priming phase
can last from several seconds to a few minutes. If this phase is
prolonged, stop the pump and verify:
- that the pump is not running completely dry (fill with fluid
from the delivery line);
- that the suction pipe guarantees against air infiltration;
- that the suction filter is not clogged;
- that the suction height is not higher than 2 mt.
- that all air has been released from the delivery pipe.
AT THE END
OF THE INITIAL
START-UP
When priming has occurred, verify that the pump is operating
within the anticipated range, in particular:
- that under conditions of maximum back pressure, the pow-
er absorption of the motor stays within the values shown
on the identification plate;
- that the delivery back pressure does not exceed the maxi-
mum back pressure for the pump.
