PYD Electrobombas VERTINOX Serie Manual De Instrucciones página 3

liquid temperature for the shaft seal
4.4 Minimum inlet pressure
Fig.2 VERTINOX 1to20 and VERTINOX 32 to 90
The maximum suction lift
calculated as follows:
P[bar]
H=Pb 10.2-NPSH-Hf-Hv-Hs
35
Pb = Barometric pressure in bar.(Barometric pressure
30
can be set to 1 bar).In closed systems,Pb indicates
25
H
the system pressure in bar.
20
Q
Q
NPSH = Net Positive Suction Head in metres head
15
E
(to be read from the NPSH curve on page 12 at
10
the highest flow the pump will be delivering).
5
Hf = Friction loss in suction pipe in metres head at the
0
highest flow the pump will be delivering.
-40 -20 0
Hv =Vapour pressure in metres head.
Hs = Safety margin = minimum 0.5 metres head
4.4 Minimum inlet pressure
4.4 Presión mínima de entrada
The maximum suction lift
If the calculated H
calculated as follows:
at a suction lift of maximum H
La altura máxima de aspiración "H" en metros se puede
H=Pb 10.2-NPSH-Hf-Hv-Hs
calculated H is negative, an inlet pressure of minimum
calcular de la siguiente manera:
Pb = Barometric pressure in bar.(Barometric pressure
H metres head is required.
can be set to 1 bar).In closed systems,Pb indicates
There must be a pressure equal to the calculated
H=Pb x 10.2-NPSH-Hf-Hv-Hs
the system pressure in bar.
during operation.
Example: NPSH = Net Positive Suction Head in metres head
Pb=Presión barométrica en bares (puede establecerse a
Pb=1bar (to be read from the NPSH curve on page 12 at
1 bar). En sistemas cerrados es la presión del sistema en
Pump type:VERTINOX 10,50Hz
the highest flow the pump will be delivering).
bares.
Flow rate: 10m /h 3
Hf = Friction loss in suction pipe in metres head at the
NPSH=Altura de succión neta positiva en metros.
NPSH (from page 12):2.1 metres head.
highest flow the pump will be delivering.
Hf=Pérdidas de carga en tubería (al mayor caudal al que
Liquid temperature : +50
Hv =Vapour pressure in metres head.
funcionará la bomba).
Hv (from fig.4):1.3 metres head
Hs = Safety margin = minimum 0.5 metres head
Hv=Presión de vapor.
H=Pb 10.2-NPSH-Hf-Hv-Hs
Hs=Margen de seguridad (mínimo 0,5 metros).
H=1 10.2-2.1-3.0-1.3-0.5=3.3(metres head)
If the calculated H
Si la "H" calculada es positiva, la bomba puede funcio-
This means that the pump can operate at a suction lift
at a suction lift of maximum H
nar a la altura máxima de aspiración. Si la "H" calculada
of maximum 3.3 metres head.
calculated H is negative, an inlet pressure of minimum
es negativa, se requerirá un
Pressure calculated in bar: 3.3 0.0981=0.324bar
H metres head is required.
mínimo de presión "H" en la aspiración.
Pressure calculated in kpa: 3.3 9.81=32.4kpa
There must be a pressure equal to the calculated
during operation.
Ejemplo:
Example:
Pb = 1bar
Pb=1bar
Tipo de bomba: VERTINOX 10,50Hz
Pump type:VERTINOX 10,50Hz
Caudal: 10m3 / h
Flow rate: 10m /h 3
NPSH (de la página 12): 2.1 metros.
NPSH (from page 12):2.1 metres head.
Temperatura del líquido: +50
Liquid temperature : +50
Hv (de la fig.4): 1.3 metros.
Hv (from fig.4):1.3 metres head
H = Pb 10,2 - NPSH - Hf - Hv - Hs
H=Pb 10.2-NPSH-Hf-Hv-Hs
H = 1 10,2 - 2,1 - 3,0 - 1,3 - 0,5 = 3,3 (metros)
H=1 10.2-2.1-3.0-1.3-0.5=3.3(metres head)
Esto significa que la bomba puede operar en un eleva-
This means that the pump can operate at a suction lift
dor de succión de máximo 3,3 metros.
of maximum 3.3 metres head.
Presión calculada en bar: 3.3 0.0981 = 0.324bar
Pressure calculated in bar: 3.3 0.0981=0.324bar
Presión calculada en kpa: 3,3 9,81 = 32,4 kpa
Pressure calculated in kpa: 3.3 9.81=32.4kpa
Fig.3
onship
missible
essure
re and
H
0 140
t[ C] o
4.5 Maximum inlet pressure
H in metres head can be
HQQE
HQQV
20 40 60 80 100
H in metres head can be
is positive, the pump can operate
metres head. If the
is positive, the pump can operate
metres head.
Hf
NPSH
Pb
Hv
4.5 Maximum inlet pressure
Figure 2. shows the maximum permissible inlet pressure.
However, the actual inlet pressure pressure when the 4.5. Presión de entrada máxima
Figura 2. Muestra la presión de entrada máxima admi-
pump is running against a closed calve must always be
sible. Sin embargo, la presión real de entrada cuando
H
lower than the maximum permissible operating pressure.
la bomba está funcionando contra una válvula cerra-
The pumps are pressure-tested at a pressure of 1.5
H da siempre debe ser inferior a la presión de servicio
Q times the value stated in fig 2 .
máxima permitida. Las bombas se someten a prueba de
Q
E presión de 1,5 veces el valor indicado en la figura 2.
4.6 Minimum flow rate
4.6. Caudal mínimo
Due to the risk of overheating,the pump should not be
Debido al riesgo de sobrecalentamiento, la bomba no
used at flows below the minimum flow rate.
120 140
debe utilizarse en caudales por debajo del caudal míni-
t[ C]
o
The curve below shows the minimum flow rate as a
mo.
4.5 Maximum inlet pressure
percentage of the nominal flow rate in relation to the
La curva siguiente muestra el caudal mínimo como
Figure 2. shows the maximum permissible inlet pressure.
liquid temperature.
porcentaje del caudal nominal en relación con la tem-
However, the actual inlet pressure pressure when the
peratura del líquido.
pump is running against a closed calve must always be
Fig.4 Air-cooled top.
Tapa refrigerada por aire.
lower than the maximum permissible operating pressure.
Qmin
H
The pumps are pressure-tested at a pressure of 1.5
[%]
times the value stated in fig 2 .
30
4.6 Minimum flow rate
20
Due to the risk of overheating,the pump should not be
10 used at flows below the minimum flow rate.
The curve below shows the minimum flow rate as a
0
percentage of the nominal flow rate in relation to the
4 0
liquid temperature.
Note:The pump must never operate against a closed
If the
discharge valve.
Nota: la bomba nunca debe operar contra una válvula
Fig.4 Air-cooled top.
de descarga cerrada.
4.7 Electrical date
Qmin
H
See motor nameplate [%]
Fig. 4 Tapa refrigerada por aire.
Nota: la bomba nunca debe operar contra una válvula
30
de descarga cerrada.
20
4.7. Datos eléctricos
-3-
Vea la placa de identificación del motor
10
4.8. Frecuencia de arranques y paradas.
Motor de hasta 4 kW incluido: Máximo 100 veces por
hora.
Note:The pump must never operate against a closed
Motores de 5.5kW y más: Máximo 20 veces por hora.
Fig.5 Presión de vaporización
4.7 Electrical date
-3-
NPSH
Pb
6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0
4.8 Frequency of starts and stops
0
Motor up to and including 4kW: Maximum 100 times
per hour.
4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0
Motors of 5.5kW and up: Maximum 20 timers per hour.
Fig 5:Vaporization Pressure
discharge valve.
See motor nameplate
4.9 Sound level
Hv
t[ C] o
t[ C] o
tm Hv
[ C] o [m]
126
190
100
180
79
170
62
160
150
45
40
140
35
30
130
25
120
20
15
110
12
100
10
8.0
90
6.0
5.0
80
4.0
70
3.0
60
2.0
1.5
50
1.0
0.8
40
0.6
30
0.4
0.3
20
0.2
10
0.1
0