Grundfos MAGNA3 D 32-80 180 97924451 [57/1656] English gb
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Grundfos MAGNA3 D 32-80 180 97924451 [57/1656] English gb

Grundfos MAGNA3 D 32-80 180 97924451 [57/1656] English gb
English (GB)
57
Minimum inlet pressure
The following relative minimum inlet pressure must be available
at the pump inlet during operation to avoid cavitation noise and
damage to the pump bearings.
In the case of cascade operation, the required relative inlet
pressure must be increased by 0.1 bar / 0.01 MPa compared to
the stated values for single-head pumps or twin-head pumps in
single-head operation.
The relative minimum inlet pressures apply to pumps installed up
to 300 metres above sea level. For altitudes above 300 metres,
the required relative inlet pressure must be increased by 0.01 bar
/ 0.001 MPa per 100 metres altitude. The MAGNA3 pump is only
approved for an altitude of 2000 metres above sea level.
Sound pressure level
The sound pressure level of the pump is lower than 43 dB(A).
Leakage current
The mains filter will cause a leakage current to earth during
operation. The leakage current is less than 3.5 mA.
Consumption when the pump is stopped
4 to 10 W, depending on activity, such as reading the display, use
of Grundfos GO, interaction with modules.
4 W when the pump is stopped and there is no activity.
Input and output communication
Power factor
The terminal-connected versions have built-in an active power
factor correction which gives a cos φ from 0.98 to 0.99.
The plug-connected versions have built-in passive PFC, with coil
and resistors which ensures that the current drawn from the grid
is in phase with the voltage. The current is approximately
sinusoidal which gives a cos φ from 0.55 to 0.98.
12.1 Sensor specifications
12.1.1 Temperature
13. Disposing of the product
This product has been designed with focus on the disposal and
recycling of materials. The following average disposal values
apply to all variants of pumps:
• 85 % recycling
• 10 % incineration
• 5 % depositing.
Dispose of this product or parts of it in an environmentally sound
way according to local regulations.
For further information see the end-of-life information on
www.Grundfos.com.
Subject to alterations.
The values in the table below apply to single-head
pumps and twin-head pumps in single-head
operation.
MAGNA3
DN
Liquid temperature
75 °C 95 °C 110 °C
Inlet pressure
[bar] / [MPa]
25-40/60/80/100/100 0.10 / 0.01 0.35 / 0.04 1.0 / 0.10
32-40/60/80/100/120 0.10 / 0.01 0.35 / 0.04 1.0 / 0.10
32-120 F 0.10 / 0.01 0.50 / 0.05 1.1 / 0.11
40-40/60 F 0.10 / 0.01 0.35 / 0.04 1.0 / 0.10
40-80/100 F 0.10 / 0.01 0.50 / 0.05 1.1 / 0.11
40-120/150/180 F 0.10 / 0.01 0.40 / 0.04 1.0 / 0.10
50-40/60/80 F 0.10 / 0.01 0.10 / 0.01 0.7 / 0.07
50-100 F 0.10 / 0.01 0.50 / 0.05 1.1 / 0.11
50-120 F 0.10 / 0.01 0.40 / 0.04 1.0 / 0.10
50-150/180 F 0.20 / 0.02 0.60 / 0.06 1.2 / 0.12
65-40/60/80/100 F 0.20 / 0.02 0.60 / 0.06 1.2 / 0.12
65-120 F 0.10 / 0.01 0.50 / 0.05 1.1 / 0.11
65-150 F 0.40 / 0.04 0.80 / 0.08 1.2 / 0.12
80-40/60/80/100/120 F 0.50 / 0.05 0.90 / 0.09 1.5 / 0.15
100-40/60/80/100/120 F 0.50 / 0.05 0.90 / 0.09 1.5 / 0.15
Two digital inputs
External potential-free contact.
Contact load: 5 V, 10 mA.
Screened cable.
Loop resistance: Maximum 130 Ω.
Analog input
4-20 mA, load: 150 Ω.
0-10 VDC, load: Greater than 10 kΩ.
Two relay outputs
Internal potential-free changeover contact.
Maximum load: 250 V, 2 A, AC1.
Minimum load: 5 VDC, 20 mA.
Screened cable, depending on signal level.
24 VDC supply
Maximum load: 22 mA
Capacitive load: Less than 470 μF
Temperature range during operation Accuracy
-10 to +35 °C ± 4 °C
+35 to +90 °C ± 2 °C
+90 to +110 °C ± 4 °C

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