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5.2.2.5 TYPE OF HANDLED FLUIDS
Pump is used to transfer clear or slightly turbid fluids. In case of particle
content, the type of bearings will be adapted to site constrains.
Pump can occasionally handle solids in the liquid but it will drive to
a reduction of pump lifetime, increasing of equipment noise and
absorbed power.
Maximum fluid viscosity is 150 cSt (mm²/s), or 40°E.
Free passage depends on pump size :
PUMP SIZE
MMI50-x F
MMI50-x O
5.2.3
DIRECTION OF ROTATIO N
Serious damage can result if the pump is started or run in the
wrong direction of rotation.
Ensure that the direction of rotation is correct before first start-up or if
maintenance work has been carried out on the electric power supply.
Direction of rotation must correspond to the arrow attached or
engraved in the pump.
Check direction of rotation when motor is apart (coupling spacer
dismantled or motor not coupled to pump). If not feasible due to pump
design (pump fitted with rigid coupling) it is necessary to check that
pump shaft turns freely after the test and before final pump start.
To check direction of rotation start motor briefly and check direction of
rotation just before rotation stops. If direction of rotation must be
modified then reverse two phases in motor junction box.
It is possible to change two phases in the control cabinet on motor
starter connections. If this solution is preferred then it will be necessary
to modify the identification of the cables in the electrical drawings too.
5.2.4
NOISE LEVEL
Noise level of a complete pump set depends on motor type and speed,
on quality and wear of flexible coupling (if concerned), on fluid velocity,
piping design, ... Values given hereafter are only indicative and based on
fan cooled electric motors average noise levels.
The test must be perfomed on the supplied pump if the noise level
must be certified.
If noise level is higher than 85dBA, personel working in pump area
should wear hearing protections.
Motor speed
2900 RPM
Elec
motor
Pump
Bare
power
set
shaft
[KW]
< 0,55
65
60
0,75
65
60
1,1
65
60
1,5
70
65
10
Max
size
(mm)
Ø0,1
Ø1
1450 RPM
Pump
Bare
set
shaft
65
60
65
60
65
60
70
65
2,2
75
70
3
75
70
4
85
80
5,5
85
80
7,5
85
80
11
85
80
15
85
80
18,5
85
80
22
85
80
30
85
80
37
90
80
45
90
80
55
95
85
75
95
85
90
95
85
110
95
85
150
95
85
Indicative noise level given in dBA (LpA at 1 m)
5.2.5
CONNECTIONS
-
Discharge flange axis is vertical and flange face is horizontal.
Other variants are available upon request. Pump complete
description is given in pump technical datasheet or in the
aknowledgement of order.
5.2.6
PERMISSIBLE FORCES AND MOMENTS
No other stress than the one due to fastening of pipe and pump
flanges together should apply. No stress must be applied to pump casing
by the pipe work. A pre-stress may exceptionally be applied to flanges to
compensate a pipe expansion. But in any case the resulting forces should
not exceed values given hereafter.
DISCHARGE Z AXIS:
FORCES (N)
DN
F/x
F/y
F/z
S F
25
75
70
85
133
32
90
85
105
162
70
65
70
65
70
65
70
65
70
65
75
70
75
70
75
70
75
70
80
75
80
75
80
75
80
75
85
80
85
80
85
80
85
80
TORQUES (N.m)
S
M/x M/y M/z*
M
70
90
60
129
85
110 75
158
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