Watercool XYLEM LOWARA D5 PWM Pump

Spherical motor principle invented by former Laing

The WCP D5-VARIO is a DC pump using the spherical motor design as developed by Laing. The only moving part in a spherical motor pump is a spherically shaped rotor/impeller unit, which is seated on an ultra-hard, wear-resistant ceramic ball.

The conventional shaft, shaft bearings, and shaft seals have been eliminated. The occurrence of bearing clearance – and the associated increase of noise – is not possible due to the principle involved. Consequently, the pump continues to work quietly throughout its entire service life.

The bearing is self-adjusting. It is lubricated directly by the medium being pumped (wet rotor design). Separate maintenance is not required. All parts in contact with the medium are corrosion resistant.   

Under normal conditions, it is impossible for the rotor to become locked due to the spherical motor design. Reliable starting is also ensured even after long periods of shutdown. The permanent magnetic mechanism allows high efficiency output.

The pump's rotation speed can be finely adjusted throughout a wide output range via a speed governor, which is integrated into the stator. Thus, you may easily regulate hydraulic performance or limit power consumption. The pump always uses the same torque, independent from rotational speed, ensuring reliable starting also on the lowest power level.

The pump comes without attachment parts. Operation requires an appropriate pump cover, which is separately available. 

Power supply is provided by a 4 pin Molex connector. The pump also offers a 3 pin Molex plug for rotational speed Monitoring.

Specifications
Dimensions (L x W x H): 65 x 65 x 57 mm
Motor design: Electronically commutated spherical motor
Materials: Stainless steel 1.4571, PPS-GF40, EPDM O-Rings, aluminium oxide, hard carbon
Rated voltage: 12V DC
Power consumption: max. 30W
Voltage range: 8-24V DC
Pressure head at 12 V: 3,7 m
Max. flow rate: 1500 l/h
Acceptable media: Water, water-glycol mixtures
Max. system temperature: 60°C
Max. system pressure: 1,5 bar
Power supply: 4Pin Molex
Rotational speed monitoring: yes (via 3Pin Molex)
PWM: yes