VARISCO SaxMag V Series, Руководство по эксплуатации

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OPERATING MANUAL - SAXMAG V
Page 20
5.4
Foundation
The structure must be prepared such that the dimensions conform to those shown in the dimensional
drawing/installation drawing.
The concrete foundations shall have a sufficient concrete strength (at least Class X0) to permit safe and
functional mounting according to DIN 1045 or an equivalent standard.
The concrete foundation must have completely cured prior to putting the unit in place. Its surface must
be horizontal and level. The anchor bolts must be suspended in the baseplate.
Support the pump system or parts thereof on vibration dampers (where necessary) so as to reduce
transmission of vibrations and noise to the environment.
Smaller pumps may be installed in the piping without any foundation. In such an application, install
vibration dampers between the pump and the piping so as to prevent transmission of vibrations from the
pump to the piping system.
5.5 Piping
Piping connected to the pump must not transmit forces, torques or moments to the latter; it may
be necessary to support connected pipes upstream of the pump.
Piping must be adequately dimensioned. The size to be chosen should not be less than that of
the pump nozzles. It is recommended for the suction side that the next larger nominal size be
chosen compared with that of the pump's suction nozzle.
The following are guide values for the max. flow velocities in the piping:
Piping
Recommended flow velocity in
the piping system [m/s]
Suction line 0.5 ... 1.0
Discharge line 3.0 ... 5.0
Recirculation line 1.0 ... 2.0
Circumferential speed:
Pump type Drive-shaft
diameter
[mm]
Max. speed
[rpm]
Maximum
circumferential speed
[m/s]
V 6 14 1,450 1.06
V 12 14 1,450 1.06
V 20 14 1,450 1.06
V 25-2 22 1,450 ( 1,000 ) 1.67 ( 1.09 )
V 30-2 22 1,450 ( 1,000 ) 1.67 ( 1.09 )
V 50-3 30 700 1.09
V 60-2 35 640 1.14
V 70 40 500 1.04
V 80-2 40 500 1.04
V 100-2 55 350 1.00
As set forth in prEN 13463-5:2002 Section 5.1, no friction-induced temperature rise is anticipated
to occur on the shaft seals at circumferential speeds of 1 m/s.