Technical Data; Disposing Of The Product - Grundfos MAGNA1 C Installation And Operating Instructions Manual

10. Technical data

Supply voltage
1 x 230 V ± 10 %, 50/60 Hz, PE.
Motor protection
The pump requires no external motor protection.
Enclosure class
IPX4D (EN 60529).
Insulation class
F.
Relative air humidity
Maximum 95 %.
Ambient temperature
0 to 40 °C.
During transport: -40 to +70 °C.
Temperature class
TF110 (EN 60335-2-51).
Liquid temperature
Continuously: -10 to +110 °C.
Stainless steel pumps in domestic hot-water systems:
In domestic hot-water systems, we recommend that you keep the
liquid temperature below 65 °C to eliminate the risk of lime
precipitation.
System pressure
The actual inlet pressure and the pump pressure
against a closed valve must be lower than the
maximum permissible system pressure.
The maximum permissible system pressure is stated on the pump
nameplate:
PN 6: 6 bar or 0.6 MPa
PN 10: 10 bar or 1.0 MPa
PN 16: 16 bar or 1.6 MPa.
Test pressure
The pumps can withstand test pressures as indicated in EN
60335-2-51.
• PN 6: 7.2 bar
• PN 10: 12 bar
• PN 6/10: 12 bar
• PN 16: 19.2 bar.
During normal operation, do not use the pump at higher
pressures than those stated on the nameplate. See fig. 16.
The pressure test has been made with water containing
anti-corrosive additives at a temperature of 20 °C.
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.
The values in the table below apply to single-head
pumps and twin-head pumps in single-head
operation.
26
Single-head pumps
DN
32-120 F 0.10 / 0.01 0.20 / 0.020 0.7 / 0.07
40-40/60 F 0.10 / 0.01 0.35 / 0.035 1.0 / 0.10
40-80/100/120/150/180 F 0.10 / 0.01 0.50 / 0.05
50-60/80 F 0.10 / 0.01 0.40 / 0.04
50-100/128 F 0.10 / 0.01 0.50 / 0.05
50-150/180 F 0.70 / 0.07 1.20 / 0.12
65-40/60/80/100/120/150 F 0.70 / 0.07 1.20 / 0.12
80-60/80/100/120 F 0.50 / 0.05 1.00 / 0.10
100-40/60/80/100/120 F 0.70 / 0.07 1.20 / 0.12
In the case of twin-head operation, increase the required relative
inlet pressure by 0.1 bar or 0.01 MPa compared to the stated
values for single-head pumps or twin-head pumps in single-head
operation.
The actual inlet pressure and the pump pressure
against a closed valve must be lower than the
maximum permissible system pressure.
The relative minimum inlet pressures apply to pumps installed up
to 300 metres above sea level. For altitudes above 300 metres,
increase the required relative inlet pressure by 0.01 bar or 0.001
MPa per 100 metres altitude. The pump is only approved for an
altitude of maximum 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.
Power factor
The terminal-connected versions have a built-in active power
factor correction which gives a cos φ from 0.98 to 0.99.
The plug-connected versions have a built-in passive power factor
correction with coil and resistors which ensure that the current
drawn from the grid is in phase with the voltage and that the
current is approximately sinusoidal which gives a cos φ from 0.55
to 0.98.
Closed valve operation
MAGNA1 pumps can operate at any speed against a closed
valve for several days without damage to the pump. However,
Grundfos recommends you to operate at the lowest possible
speed curve to minimise energy losses. There are no minimum
flow requirements.
Do not close inlet and outlet valves simultaneously,
always keep one open when the pump is running.
Media and ambient temperatures must never
exceed the specified temperature range.

11. 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 MAGNA1 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.
Note: persons with pacemakers disassembling this product must
exercise care when handling the magnetic materials embedded in
the rotor.
Liquid temperature
75 °C 95 °C 110 °C
Inlet pressure
[bar] / [MPa]
1.0 / 0.10
1.0 / 0.10
1.0 / 0.10
1.7 / 0.17
1.7 / 0.17
1.5 / 0.15
1.7 / 0.17