Medium Compressors – 25 to 50 Litres

For a workshop with one or two commonly used pneumatic tools a 25 or 50 litre compressor with a 2 HP motor is often enough, suitable for impact drivers and small spray guns. In this collection you will find Abac Montecarlo 2 HP models, Hyundai 2 HP and Fini. Check the air consumption of the tool, expressed in litres per minute, before choosing.

A direct-drive compressor has its motor and pump on the same axis; it is compact, lighter and suited to occasional use. A belt-drive compressor connects the motor to the pump with a belt; it is sturdier and copes with more demanding work. For a workshop used regularly choose the belt-drive; for occasional jobs a direct-drive is enough.

Silenced compressors, such as the LN0 Silent 27-litre or the OS20P 50-litre models, reduce the noise of the piston and motor, which is useful in enclosed spaces or next to other work. Silencing lowers the noise but does not replace hearing protection. D.Lgs. 81/2008 (the Italian Legislative Decree on workplace safety) requires noise risk to be assessed in the business.

Single-phase compressors plug into a standard 230 V socket, so they are the most common in small workshops and on sites. Three-phase units need a three-phase supply and generally have greater power. The collection includes single-phase models, such as the 3 HP V30/50 from Abac. For a three-phase model, have an electrician check the supply.

The trolley model, with wheels and a handle, moves easily across level floors in the workshop or on site. With a 50-litre tank the overall weight is still considerable, so assess routes, steps and thresholds before moving it. The collection includes Montecarlo trolley compressors with various motors, such as the OS15P, L25P and OSS20P.

A petrol-engine compressor is used where there is no electricity, such as in the countryside or on a site without mains. It must be used outdoors or in a well-ventilated area, because it releases exhaust gases. An electric compressor is quieter and ready to use in the workshop, so it is preferable when a socket is available.

Check the safety valve and the pressure gauge, and drain condensation from the tank after every use. Do not exceed the maximum pressure stated and do not leave the tank full without supervision. Use hoses and fittings in good condition, and wear eye and hearing protection, especially during the noisier work.