Grundfos MAGNA3 Series User Manual

Operation English
Plate Heat Exchanger 5
EN
EN
Operation
Start-up
Check that measurement A is correct. For
A, see enclosed PHE-drawing.
Check that the valve is closed between the
pump and the unit controlling the system
flowrate.
If there is a valve at the exit, make sure it
is fully open.
Open the vent and start the pump.
Open the valve slowly.
When all air is expelled, close the vent.
Repeat steps 1– 6 for the second media.
Note!
If several pumps are included in the system,
make sure you know which one should be
activated first.
Note!
Adjustments of flowrates should be made
slowly in order to avoid the risk of water
hammer.
Water hammer is a shortlasting pressure
peak that can appear during start-up or shut
-
down of a system, causing liquids to travel
along a pipe as a wave at the speed of
sound. This can cause considerable damage
to the equipment.
1
2
Closed
Open
3
4
Open
5
Open slowly
6
Close
7

Grundfos MAGNA3 Series Specifications

General

Temperature Range	-10 °C to +110 °C
Insulation Class	F
Series	MAGNA3
Max. Liquid Temperature	110 °C
Power Supply	1x230V, 3x400V
Approvals	CE
Pump Housing	Cast iron
Installation	Inline
Communication	Modbus RTU, BACnet MS/TP
Ambient Temperature	0 °C to 40 °C
Material	Cast iron