FP USER INSTRUCTIONS ENGLISH 71576286 - 07/06
Page 15 of 35
If necessary, improve the machine alignment:
Complete unit mounted on common base plate:
The machines are first aligned accurately in our
workshops. Usually, any misalignment observed on-
site is due to a wrong adjustment under the base
plate (disturbed during transport or because of
forces exerted by the pipework). It is only necessary
to rectify the adjustment under base plate. If it
proves to be insufficient, modify the motor and the
pipeworks adjustment.
Pump and motor mounted on individual base
plates:
Machines are (or must be) first mounted on their
own base plate in the workshop. Once the pump is
set, it will be regarded as the fixed piece. Any
alignment necessary shall be carried out on the
motor.
Never connect the electric motor
before the setting has been completely finished.
4.5 Piping
The user must verify that the equipment is
isolated from any external sources of vibration.
Protective covers are fitted to the
pipe connections to prevent foreign bodies entering
during transportation and installation. Ensure that
these covers are removed from the pump before
connecting any pipes.
4.5.1 Suction and discharge pipework
The dimensions of the pipes do not directly depend
on suction and discharge diameters of the pump.
a) First, choose a flow speed < 2 m/s at suction,
and about 3 m/s at discharge.
b) Take into account the available NPSH, which
must be superior to the required NPSH of the
pump.
Never use pump as a support for
piping.
Do not mount expansion joints in
such a way that their force, due to internal pressure,
may act on the pump flange.
Maximum forces and moments allowed on the pump
flanges vary with the pump size and type. These
external strains may cause misalignment, hot
bearings, worn couplings, vibrations and the
possible failure of the pump casing.
When designing the pipes (§ 4.5.2.1, § 4.5.2.2, §
4.5.3.1) take necessary precautions in order not to
exceed maximum allowed strains.
Forces and moments applied to the pump flanges
must never exceed the values shown in the table
below:
DN
Forces (daN)
Moments (daN.m)
Pipe
Layout
flanges
F
Y
F
Z
F
X
F
M
Y
M
Z
M
X
M
40
30
40
35
60
23
27
34
49
50
40
50
45
80
27
30
37
54
65
50
68
58
102
30
33
40
60
80
60
75
70
120
32
36
44
65
100
80
100
90
160
36
41
50
74
125
100
125
110
200
44
52
63
92
150
120
150
135
240
53
62
75
110
V
e
rt
ic
a
l
p
ip
e
p
e
rp
e
n
d
ic
u
la
r
to
th
e
s
h
a
ft
200
162
200
180
314
69
79
97
144
40
40
30
35
60
23
27
34
49
50
50
40
45
80
27
30
37
54
65
68
50
58
102
30
33
40
60
80
75
60
70
120
32
36
44
65
100
100
80
90
160
36
41
50
74
125
125
100
110
200
44
52
63
92
150
150
120
135
240
53
62
75
110
H
o
ri
z
o
n
ta
l
p
ip
e
p
e
rp
e
n
d
ic
u
la
r
to
th
e
s
h
a
ft
200
200
162
180
314
69
79
97
144
40
35
30
40
60
23
27
34
49
50
45
40
50
80
27
30
37
54
65
58
50
68
102
30
33
40
60
80
70
60
75
120
32
36
44
65
100
90
80
100
160
36
41
50
74
125
110
100
125
200
44
52
63
92
150
135
120
150
240
53
62
75
110
P
ip
e
p
a
ra
ll
e
l
to
th
e
a
x
is
200
180
162
200
314
69
79
97
144
Ensure piping and fittings are flushed
before use.
Ensure piping for hazardous liquids is
arranged to allow pump flushing before removal of
the pump.
