Medo Air pumps are very quiet to run.
Medo Air pumps are of an energy saving design.
Medo Air Pumps require no lubrication.
Medo Air Pumps are very realiable and come highly recommended.
Medo Air Pumps have been in use at Koi Logic for some four to five years now. We currently have not had a single pump failure during that time. We have been using over twenty Medo Air Pumps on the different Koi systems, all producing great results.
The Linear-motor-driven Free Piston System (Pat.) has an internal piston inside the cylinder which is driven by an electro-magnet and spring system controlled by the alternating input current cycle.
The piston thus forms a single combined structure of two usually different devices; motor and pump. The system is quiet and vibration free, and offers the advantages of easy maintenance and a long operating life.
Linear Pump Operating Principle
The activated electro-magnet attracts the piston against the return spring, while air is taken into the cylinder through the opened inlet valve.
When the electro-magnet is deactivated, the return spring pushes the piston back, and the compressed air is brought out of the cylinder through the now open outlet valve.
The system can function as either an air compressor or as a vacuum pump.
Features of the Linear-motor-driven Free Piston System:
- Self-cooling design.
Cool intake air is blown onto the electro-magnetic coils through an orifice, making sealed construction possible and preventing the escape of operating noise. - Low noise level.
The machine has no complex transmission system. This results in the lowest noise level possible due to the absence of rotating parts or ball bearings. Operating noise is also quelled due to the pump's sealed configuration. - Small output air pulsation.
Piston reciprocation is synchronised with input power frequency regardless of load (i.e.; 3000 rpm for 50Hz and 3600 rpm for 60Hz). Such high RPM adversely reduces each discharge volume and eliminates any problems caused by pulsation. - Low Power Consumption.
The piston is the only component in the system which moves. The absence of transmission usage to pass the power to the piston means that there is a large reduction in energy loss, and an improvement in efficiency over other pumps. - Compact composite structure.
This unique system enables direct reciprocation of a single part which consists of composite piston and armature. The incredibly compact and lightweight design was achieved by combining what are two different functions in other pumps - motor and piston - into a single structure. - Anti-overpressure mechanism.
When the output pressure exceeds the rated value the piston stroke will automatically diminish and prevent over-pressurising. At the same time, the current and power consumption will also be automatically reduced, thus eliminating possible failure caused by tentative overload. - Low vibration.
The aluminium die-cast piston produces very little vibration or kick-backs. Little or no damage from vibration stress is therefore sustained during operation. Even secondary vibrations are absorbed by special soft rubber feet. - Quick Response.
Due to the lower starting current, the unit can immediately respond to frequent on-off input signals, even under back pressure conditions. - Longer Durability.
Oil free construction requires no periodical oil-up. This simple mechanism has the fewest number of moving parts possibe; one. Long and stable performance is assured if usage complies with its specification.
Medo 45 Air Pump Specifications:
