The Lowara DDC is electronically commutated
Spherical motor pump, with running times of well over 50,000 hours at 12 volt nominal voltage.
There is no conventional shaft with shaft bearings and shaft seals. The only moving part on a spherical motor pump is a spherically shaped rotor/impeller unit supported on an ultra-hard, wear-resistant ceramic bearing ball. The bearing is thus self-adjusting. The development of bearing play - and thus an increase in noise - is not possible due to the principle. The pump thus remains quiet over the entire running time.
The bearing is lubricated directly by the pumped medium (glandless pump). This eliminates the need for maintenance. Blocking the pump is not normally possible. A safe start-up is possible without any problems even after a long standstill .
The permanent magnet rotor/ impeller unit is driven by a magnetic field generated by the surrounding stator. This is completely built around the rotor, so that a complex, separate magnetic shielding is not necessary in most cases . The complete pump is very compact and at 38mm only slightly taller than the stator itself.
The spherical motor principle enables economical operation with comparatively high performance. By varying the voltage, the DDC direct current pump can be controlled easily and over a large power range. All parts that come into contact with media are completely corrosion-resistant. Via a tachometer output , it is possible to query the speed of the pump directly.
• Model: DDC4.2P
• Dimensions: (LxWxH) 92 x 70 x 39mm
• Type of motor: Electronically commutated spherical motor
• Rated voltage: 12 V DC direct voltage
• Starting current: up to 4.5 A (briefly)
• Power consumption: 18 W
• Head at 12V: 5.2m
• Maximum flow rate: 1000L/h
• Fluids to be pumped: water, water-glycol mixtures
• Max. system temperature: 60° C
• System pressure: max. 1.5 bar
• Connections: 2x 3/8" hose nozzle
• Connections: 4pin Molex, 4pin PWM
scope of delivery
• 1x Xylem LOWARA DDC 4.2 PWM