salmson S Serie Manuel D'installation Et Mise En Service page 34

ENGLISH
With :
c=calorific capacity of fluid in J/Kg.K
g=gravity in m/s²
H=pump head in m
T =liquid temperature in °C
f
T =surface temperature in °C
o
=hydraulic efficiency at duty point

=differential temperature
v

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
S40 ; S41 ; S42
S50 ; S51 ; S80 ; S82
S45 ; S46 ; S60 ; S61
S45‐4 ; S63 ; S68 ; S69 ; S83 ; S88 ; S100 ; S108
S65 ; S66 ; S85 ; S105 ; S150
S91 ; S121 ; S161 ; S201
S180 ; S230
S170 ; S220
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.
MAXIMUM SPEED
RPM
Bi‐bloc and Close‐
bearing bracket coupled
variants pumps
4000
3600
3000
3600
3000
2400
2000
1600
1200
5.2.2.5 AUTHORIZED SPEED AND NUMBER OF STARTS
PER HOUR
Operating limits for contiuous duty at 50Hz :
S 40
S 45
S 50
If flow much higher than Q
S 60
If flow much higher than Q
S 63
If flow much higher than Q
S 68
If flow much higher than Q
S 80
If flow much higher than Q
S 83
If flow much higher than Q
S 88
If flow much higher than Q
S100
If flow much higher than Q
S108
If flow much higher than Q
S 65
S 85
S105
S121
S150
S161
S180
If flow much higher than Q
S201
If flow much higher than Q
S230
If flow much higher than Q
S170
S220
S300
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:
S40 S41 S42
S50 S51 S65 S66 S68 S69
S100 S105 S121
10
Continuous duty
YES
YES
YES
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
YES
YES
YES
YES
YES
YES
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
or if abrasive content is high,
BEP
choose bigger pump size.
YES
YES
PUMP MAX GAP (mm)
S45 S46 14x19
Ø20
S60 S61 Ø17
S63 Ø22
Ø25
S83 Ø27
S80 S82 Ø32
S88 S108 Ø35
S91 Ø37
S85 S180 Ø40
Ø45