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Grundfos MAGNA1 User Manual

Grundfos MAGNA1
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English (GB)
6
3.3.3 Pump head position
If you remove the pump head before installing the pump in the
pipes, pay special attention when fitting the pump head to the
pump housing:
1. Visually check that the floating ring in the sealing system is
centred. See figures 11 and 12.
2. Gently lower the pump head with rotor shaft and impeller into
the pump housing.
3. Make sure that the contact face of the pump housing and that
of the pump head are in contact before you tighten the clamp.
See fig. 13.
Fig. 11 Correctly centred sealing system
Fig. 12 Incorrectly centred sealing system
Fig. 13 Fitting the pump head to the pump housing
3.3.4 Changing the control box position
TM05 6650 3016TM05 6651 3016
Check the position of the clamp before you tighten
it. Incorrect position of the clamp will cause leakage
from the pump and damage the hydraulic parts in
the pump head. See fig. 13.
TM05 5837 3016
The warning symbol on the clamp holding the pump
head and pump housing together indicates that there
is a risk of personal injury. See specific warnings
below.
CAUTION
Pressurised system
Minor or moderate personal injury
- Pay special attention to any escaping vapour
when loosening the clamp.
CAUTION
Crushing of feet
Minor or moderate personal injury
- Do not drop the pump head when loosening the
clamp.
Fit and tighten the screw holding the clamp to 8 Nm ±
1 Nm. Do not apply more torque than specified even
though water is dripping from the clamp. The
condensed water is most likely coming from the drain
hole under the clamp.
Check the position of the clamp before you tighten
the clamp. Incorrect position of the clamp will cause
leakage from the pump and damage the hydraulic
parts in the pump head.
8Nm!

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Grundfos MAGNA1 Specifications

General IconGeneral
Pump TypeCirculator Pump
Flow Range0.5 - 12 m³/h
Maximum Flow12 m³/h
Maximum Head10 m
Maximum Liquid Temperature110°C
Maximum Operating Pressure10 bar
Power Supply230 V, 50/60 Hz
Enclosure ClassIP42
Insulation ClassF
Pump HousingCast Iron
Installation Length180 mm
SeriesMAGNA1
Energy Efficiency ClassA
Liquid Temperature Range2°C to 110°C
ApprovalsCE, EAC
Ambient Temperature Range0 .. 40 °C

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