ENGLISH
10
With
:
c=calorific
capacity
of
fluid
in
J/Kg.K
g=gravity
in
m/s²
H=pump
head
in
m
T
f
=liquid
temperature
in
°C
T
o
=surface
temperature
in
°C
=hydraulic
efficiency
at
duty
point
v
=differential
temperature
Maximum
flow
vs
lifting
height
Hydraulic
curves
are
given
for
a
suction
height
of
1
meter.
If
suction
lift
is
higher
than
1
meter
then
the
maximum
pump
flow
will
be
limited
as
follows
:
‐
¾
of
max
flow
if
suction
height
is
3
m
under
suction
flange
level.
‐
½
of
max
flow
if
suction
height
is
6
m
under
suction
flange
level.
See
sketch
below
:
5.2.2.4
Maximum
allowable
speed
and
number
of
starts
per
hour
Maximum
speed
:
The
maximum
speeds
are
indicated
in
the
table
below.
Maximum
allowable
speed
depends
on
critical
speed
of
each
impeller
size
and
on
bearing
bracket
maximum
allowable
speed.
PUMP
SIZE
MAXIMUM
SPEED
RPM
Bi
‐
bloc
and
bearing
bracket
variants
Close
‐
coupled
pumps
S40
;
S41
;
S42
4000
S50
;
S51
;
S80
;
S82
3600
S45
;
S46
;
S60
;
S61
3600
3000
S45
‐
4
;
S63
;
S68
;
S69
;
S83
;
S88
;
S100
;
S108
3000
S65
;
S66
;
S85
;
S105
;
S150
2400
S91
;
S121
;
S161
;
S201
2000
S180
;
S230
1600
S170
;
S220
1200
Number
of
starts
per
hour
:
Wait
for
pump
full
stop
before
starting
up
the
pump
again
to
avoid
damaging
the
motor
and
the
pump.
Starting
frequency
depends
on
motor
type.
Ask
manufacturer
if
necessary.
A
maximum
of
6
starts
per
hour
is
recommended.
5.2.2.5
AUTHORIZED
SPEED
AND
NUMBER
OF
STARTS
PER
HOUR
Operating
limits
for
contiuous
duty
at
50Hz
:
Continuous
duty
S
40
YES
S
45
YES
S
50
YES
S
60
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S
63
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S
68
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S
80
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S
83
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S
88
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S100
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S108
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S
65
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S
85
YES
S105
YES
S121
YES
S150
YES
S161
YES
S180
YES
S201
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S230
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S170
If
flow
much
higher
than
Q
BEP
or
if
abrasive
content
is
high,
choose
bigger
pump
size.
S220
YES
S300
YES
5.2.2.6
TYPE
OF
HANDLED
FLUIDS
The
pump
is
used
to
handle
clear
or
laden
liquids
with
a
maximum
viscosity
of
500
cSt
(mm²/s).
For
viscosity
higher
than
50cSt,
the
discharge
pressure,
the
flow
and
the
hydraulic
efficiency
must
be
re
‐
calculated.
The
solids
content
in
the
liquid
should
be
limited
to
80g/l
with
no
long
fibers
content.
Dryness
max
=
8%.
Free
passage
depends
on
pump
size:
PUMP
MAX
GAP
(mm)
S45
S46
14x19
S40
S41
S42
Ø20
S60
S61
Ø17
S63
Ø22
S50
S51
S65
S66
S68
S69
Ø25
S83
Ø27
S80
S82
Ø32
S88
S108
Ø35
S91
Ø37
S85
S180
Ø40
S100
S105
S121
Ø45
Summary of Contents for S series
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