Pratissoli LKNR Serie Manuel D'utilisation Et D'entretien page 50

17.2 LKNR pump
17.2.1 Operating instructions
The LKNR series pump has been designed to operate
in environments with atmospheres that are not
potentially explosive and for using salt water rich
in particulate, therefore it is considered ideal for
systems with fluid recirculation.
The durability of the piston seals is directly in
relation to the percentage of the presence of solids
in the fluid as regards both their size and their
density.
For a long seal life we recommend a particulate
grain size of no more than 200 micron and 20% max.
in volume.
For more information and a general system layout,
see par. 9.6.
17.2.5 Technical characteristics
Model
LKNR 45
17.2.6 Dimensions and weight
For LKNR pump dimensions and weight, refer to Fig. 13.
Dry weight 385 kg.
Flow rate
Rpm
l/min
1500 218
1750 238
1900 241
50
17.2.2 Water temperature
The maximum permissible water temperature is
40°C. However, the pump can be used with water up
to a temperature of 60°C, but only for short periods.
In this case, it is best to consult the Technical Office
or Customer Service Department.
17.2.3 Maximum pressure and flow rate
The rated specifications stated in our catalog are the maximum
that can be obtained by the pump. Independently of the
power used, the maximum pressure and rpm indicated on the
specification label can never be exceeded unless prior formal
authorization is given by our Technical Office or Customer
Service Department.
17.2.4 Minimum operating speed
The minimum permissible speed of the crankshaft for these
types of pumps is 300 rpm; any rpm other than as shown in
the performance table (see par. 17.2.5) must be expressly and
formally authorized by the Technical or Customer Service
Department.
Pressure
Gpm bar psi
57.6 280 4060
62.9 280 4060
63.7 280 4060
Power
kW HP
117 159
127 173
129 176
Fig. 13