Pratissoli MW Serie Manuel D'utilisation Et D'entretien page 66

17.2 MWR pump
17.2.1 Operating instructions
The MWR series pump has been designed to
operate in environments with atmospheres that are
not potentially explosive and for using 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. 9.7.
17.2.5 Technical characteristics
Model
MWR 40
MWR 45
MWR 50
MWR 55
Flow rate
Rpm
l/min
800 211
1500 211
1800 212
2200 213
2600 213
800 267
1500 267
1800 269
2200 270
2600 270
800 330
1500 330
1800 332
2200 333
2600 333
800 399
1500 399
1800 401
2200 403
2600 403
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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 or
Customer Service Departments.
17.2.3 Maximum pressure and flow rate
The rated specifications stated in our catalogue are the
maximum that can be obtained by the pump. Independently
of the power used, the maximum pressure and rpm indicated
in the specification label can never be exceeded unless upon
prior formal authorisation by our Technical or Customer
Service Departments.
17.2.4 Minimum rotating 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
formally authorised by our Technical or Customer Service
Departments.
Pressure
Gpm bar psi
55.7 210 3045
55.7 210 3045
56 210 3045
56.3 210 3045
56.3 210 3045
70.6 155 2247.5
70.6 155 2247.5
71 155 2247.5
71.3 155 2247.5
71.3 155 2247.5
87.2 125 1812.5
87.2 125 1812.5
87.6 125 1812.5
88 125 1812.5
88 125 1812.5
105.4 100 1450
105.4 100 1450
106 100 1450
106.5 100 1450
106.5 100 1450
Power
kW HP
84.6 115
84.6 115
85.3 116
85.3 116
85.3 116
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100
73.5 100