rak-39N with start-stop function

Safer working thanks to the start-stop function – the rak-39N drain and sewer cleaning machine

The rak-39N is a professional drain cleaning machine for tradespeople, sewer workers and drain cleaning contractors. What sets it apart from the rak-39 is its start-stop function.

How the start-stop function works

On a conventional drain cleaning machine you select the direction of rotation at the switch, and from then on the shaft turns continuously. The clamping lever only decides whether the jaws grip the cable or not – the shaft itself keeps running, even when you release the lever.

On the rak-39N the switch merely presets the direction of rotation. The shaft stays still at first. Only when you press the clamping lever, so that the jaws grip the cable, does the drive start up. Release the lever and the shaft stops.

The drive therefore turns only while you actively call for it. That avoids idling between working steps and keeps the machine at a standstill during every pause.

The little sister of the rak-40® is designed specifically for working with 16mm cables. With the optional adapter drum it also runs smaller 10mm or 8mm cables with T-slot coupling or bulb head. The motor delivers 0.37kW / 0.5hp and provides ample power even for demanding jobs.

Like the other rak® machines, the rak-39N® uses the external clamping jaw system that allows the jaws to be changed quickly. The design brings a further benefit: a continuous, one-piece hollow shaft inside the machine through which the cable is guided. Neither moisture nor dirt can travel along the rotating cable into the interior. Machines with an internal clamping system and open shaft work on a different principle; there the drive compartment is not sealed off from the cable.

Thanks to this design, the rak-39N® runs on permanently lubricated ball bearings that make later re-greasing unnecessary. The 0.5hp motor, built specifically for this machine, offers high starting and breakdown torque, which keeps it steady in operation. The shaft driving the cable turns at 750rpm, placing the rak-39N® among the high-speed drain cleaning machines – an advantage in particular when working with chain knockers.

The drive lever on the longitudinal axis can be locked in place and then serves as a carrying handle, which makes the machine easier to move.

The rak-39N® is used in pipes from 30 to 100mm with 16mm cables. The optional adapter drums with collets also allow 8mm and 10mm cables to be run, opening up smaller pipe diameters and tight runs with numerous bends.

Technical data

• Machine: splash-proof, radio-interference suppressed, with start-stop function
• Motor: 0.37kW / 0.5hp, 230V / 50Hz, VDE 0530
• Cables: suitable for 16mm, with optional adapter drum also 8mm and 10mm (cables and adapter not included in the scope of delivery)
• Max. working length: up to 40m with 16mm cables
• Working range: 30–100mm, less with smaller cables
• Mains cable: 5m, oil- and acid-resistant
• Bearings: permanently lubricated ball bearings
• Speed: 750rpm
• Housing: cast aluminium frame with impact-resistant plastic side covers
• Dimensions: LxWxH 470mm x 160mm x 410mm
• Weight: approx. 16kg

Product safety information

Always wear suitable gloves and safety goggles when cleaning drains, to protect yourself from waste water, and follow the enclosed instruction manual.