The tube-blowing machine, comprising an air box and pusher, has been designed to provide an effective and safe method of installing Micro-tubes. The system operates on the viscous drag principle employing compressed air to install the tubes, controlled and assisted by a belt drive system.

The tubes are propelled by compressed air, fed into the duct via a venturi principle, while the hydraulically powered belt drive system controls the micro-tubes. The electronic monitoring system provides read out of speed and distance, gives protection against duct obstructions and includes an emergency stop facility.

The system is mounted on an anti corrosion treated, sturdy, height adjustable, wheeled, tubular steel trolley. This allows the unit to be wheeled around on site; in addition the system can also be detached from the trolley. The C-1200 hydraulic petrol driven power pack provides power.

The unit is CE approved.

Features
Fully labelled control panel containing:
• Power on/off button
• Emergency stop button
• Reset button
• Combined length counter recording in metres (feet) and cable speed read out in metres/min (feet/min)
• Hydraulic pressure read out dial
• Air pressure read out dial
• Hydraulic on/off control valve
• Adjustable speed control for drive belts
• Air supply control on/off with automatic exhaust function

Air Box
• Manufactured in aluminium
• Range taking of varying combinations of tub configurations by means of interchangeable collets
• Duct sealing at mouth of air box
• Duct gripping facility designed to obviate duct crushing and distortion
• Upper section of airbox is retained
• Air box aligned is adjustable for varying tube configurations
• No tools are required to split air box for insertion of tubes and duct
• On/off air control valve with automatic air exhaust from duct when in “off” position

Chassis
• Front mounted wheels for ease of manoeuvrability
• Lightweight anti-corrosion treated tubular steel frame
• Adjustable frame allowing unit to be tilted up to 30°, reducing bending of duct and tubes
• Adjustable rear legs for uneven terrain

Cable Feeder
• Manufactured in cast aluminium
• Hydraulically powered
• Unit lifts and splits to allow insertion of cable between drive belts
• Drive belts are profiled polyurethane, moulded
• Belt tension can be set by means of adjustable chain drive tensioners fitted to the side of the unit
• System relief valve fitted as standard