Grundfos MAGNA1 C Installation And Operating Instructions

English (GB)
7
3.3.4 Changing the control box position
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.
Step Action Illustration
1
Loosen the screw in the
clamp that holds the
pump head and pump
housing together.
If you loosen the screw
too much, the pump
head will be completely
disconnected from the
pump housing.
TM05 2867 3016
2
Carefully turn the pump
head to the desired
position.
If the pump head is
stuck, loosen it with a
light blow of a rubber
mallet.
TM05 5526 3016
3
Place the control box in
horizontal position so
that the Grundfos logo
is in vertical position.
The motor shaft must be
in horizontal position.
TM05 5527 3016
4
Due to the drain hole in
the stator housing,
position the gap of the
clamp as shown in step
4a or 4b.
TM05 2870 3016
8Nm!
5.0
4a
Single-head pump.
Position the clamp so
that the gap points
towards the arrow.
It can be in position 3, 6,
9 or 12 o'clock.
TM05 2918 3016
4b
Twin-head pump.
Position the clamps so
that the gaps point
towards the arrows.
They can be in position
3, 6, 9 or 12 o'clock.
TM05 2917 3016
5
Fit and tighten the screw
holding the clamp to 8 ±
1 Nm.
Do not retighten the
screw if condensed
water is dripping from
the clamp.
TM05 2872 3016
6
Fit the insulating shells.
The insulating shells for
pumps in
air-conditioning and
cooling systems must
be ordered separately.
TM05 5529 3016
Step Action Illustration
8 Nm5.0

Grundfos MAGNA1 C Specifications

General

Liquid temperature range	-10°C to +110°C
Maximum operating pressure	10 bar
Enclosure class	IP42
Insulation class	F
Type	Circulator pump
Pump housing	Cast iron
Series	MAGNA1
Model	MAGNA1 C
Protection Class	IP42
Approvals	CE, EAC
Connection	Flange
Power Supply	1 x 230 V, 50/60 Hz
Weight	Varies by model