Brochure

Construction
MAGNA1
5
8
5. Construction
Sectional drawing
Fig. 4 MAGNA1 flanged version with PPS-composite
rotor can
Material specification
See fig. 4.
Mechanical construction
The MAGNA1 is of the canned-rotor type, i.e. pump
and motor form an integral unit without shaft seal and
with only two gaskets for sealing. The bearings are
lubricated by the pumped liquid.
The pump is characterized by the following:
• controller integrated in the control box
• control panel on the control box
• control box prepared for optional CIM modules
• built-in differential pressure and temperature sensor
• cast-iron or stainless-steel pump housing
• twin-head versions
• no external motor protection required
• insulating shells supplied with single-head pumps
for heating systems.
Motor and electronic controller
The MAGNA1 incorporates a 4-pole synchronous,
permanent-magnet motor (PM motor). This motor type
is characterized by higher efficiency than a
conventional asynchronous squirrel-cage motor.
The pump speed is controlled by an integrated
frequency converter.
A differential pressure and temperature sensor is
incorporated in the pump.
Pump connections
See individual product pages.
Surface treatment
The pump housing and pump head are electrocoated
to improve the corrosion resistance.
Electrocoating includes:
• alkaline cleaning
• pretreatment with zinc phosphate coating
• cathodic electrocoating (epoxy)
• curing of paint film at +392 to +482 °F
(+200 to +250 °C).
Color
Color codes for the pump:
TM05 2319 3012
Pos. Component Material EN
1 Outer bearing ring Aluminium oxide
2 Control box Polycarbonate
3
Stator housing Aluminium
O-rings/gaskets EPDM
4 Thrust bearing
Aluminium
oxide/carbon
5 Bearing plate Stainless steel EN 1.4301
6 Neck ring Stainless steel EN 1.4301
7 Impeller PES
8 Pump housing Cast iron
EN 1561
EN-GJL-250
9 Rotor can
PPS or stainless
steel
10 Shaft Stainless steel EN 1.4404
Color Code
Red NCS40-50R
Black NCS9000