Watercool WCP D5 Pump - PWM

A D5 pump motor with PWM speed control, 65 x 65 x 57 mm, sold without a pump top. The Watercool WCP D5-PWM Pump runs on 12V DC, pushes up to 1500 l/h and needs a separately available D5 top or reservoir before it can work.

Properties

• Pump: D5, spherical motor design, PWM control
• Speed: 800 to 4800 rpm
• Flow and head: Max. 1500 l/h, 3.7 m at 12 V
• Power: 4-pin Molex, 3-pin Molex speed signal
• Size: 65 x 65 x 57 mm

One moving part

The WCP D5 is a DC pump using the spherical motor design as Laing developed it. In a spherical motor pump the rotor/impeller is one spherically shaped unit, and that unit is the only moving part. It is seated on an ultra-hard, wear-resistant ceramic ball.

A conventional pump has a shaft, shaft bearings and shaft seals; here they have been eliminated. Due to the principle involved, bearing clearance cannot develop, so the occurrence of the noise increase associated with it is not possible either. Consequently the pump continues to run quietly throughout its entire service life.

Self-adjusting, wet rotor bearing

The bearing adjusts itself and is lubricated directly by the medium being pumped, which is the wet rotor design. No separate maintenance is required, and all parts in contact with the medium are corrosion resistant. Because the coolant is the lubricant, the pump must never be operated without coolant: running it dry may damage it.

Under normal conditions the spherical design makes it impossible for the rotor to become locked. A reliable start is ensured even after long periods of shutdown, and the permanent magnetic mechanism allows a high efficiency output.

Speed regulation via PWM

On this version the rotational speed is regulated via a PWM signal, from 800 to 4800 rpm. A speed governor integrated into the stator means the rotation speed can be finely adjusted throughout a wide output range. Thus you may easily regulate the hydraulic performance, or limit the power consumption.

The pump always uses the same torque, independent of the rotational speed, ensuring reliable starting even on the lowest power level. Power supply is provided by a 4 pin Molex connector, and a 3 pin Molex plug offers rotational speed monitoring. On its back the pump carries a shiny plate made from stainless steel.

What the loop needs

The pump comes without attachment parts, and operation requires an appropriate pump cover. Watercool's own is the HEATKILLER® D5-TOP; a reservoir with a D5 bottom such as the HEATKILLER® Tube 100 D5 or the HEATKILLER Tank 200 D5 also takes it. The same pump with a potentiometer in place of PWM is the WCP D5-VARIO.

Notes

• Every mounting position is permitted except with the rotor facing downward: the rotor is not fixed to the axle and could shift and rub against the housing.
• Watercool does not recommend water additives with suspended particles; they can clog the pump or wear the bearing.
• Watercool recommends demineralized or deionized (distilled) water with a suitable corrosion inhibitor as coolant.

In the box

• 1x Watercool WCP D5-PWM Pump