Motivair logo

FAQs  

Question or an interesting fact? Contact us on solutions@motivair.co.uk

What is compressed air?
Air that is compressed and contained at a pressure that is greater than atmospheric.
  • The process takes a given mass of air, which occupies a given volume of space, and reduces it into a smaller space which results in greater pressure as the air tries to return to its original volume.
  • A typical compressed air system operating at 7-bar g (100 psig) will compress the air down to 1/7 of its original volume.
Why use compressed air?
Compressed serves as a utility, like water, gas or electricity.
  • It is preferred to any of these when safety (e.g. Oil or Gas production), cleanliness (food production, hospitals, or pharmaceuticals) or control (Water and Waste companies) are paramount.
  • Compressed air can be modified to suit particular needs because moisture content, cleanliness and pressure can all be adjusted precisely.
What should you avoid with compressed air?
Compressed air may be used for cleaning only if no alternative method is available as it can be dangerous.
  • The nozzle pressure MUST remain below 2bar g (30 psi). Personal Protective Equipment (PPE) and effective chip guarding techniques must be used.
What legal requirements do I need to run my compressor(s)?
In the UK, all industrial compressed air systems must comply with the Pressure Systems Safety Regulations (PSSF), which came into force February 2000.
  • As a requirement of the Health and Safety Executive (HSE) all Systems should have a Written Scheme of Examination in accordance with SI2000-128.
  • (Motivair provides complete PSSF 2000 compliance to ensure you and your company is operating in accordance with the regulations.)
What are pneumatic tools?
Pneumatic tools are those powered by compressed air.
  • Common hand tools used in industry include buffers, nailing and stapling guns, grinders, drills, screwdrivers, jack hammers, chipping hammers, riveting guns, sanders and wrenches.
How do you use pneumatic tools safely?
Review the manufacturer's instruction before using a tool.
  • Install compressed air feeds from a suitable valved, compressed air filter/regulator (and if required Lubricator) assembly. The hose assembely should be fitted with swivel type couplings and hose and fittings certified for use at the working pressure of the pneumatic tools.
  • Wear Personal Protective Equipment (PPE) such as safety glasses or a face shield and, where necessary, safety shoes or boots and hearing protection.
  • Post warning signs where pneumatic tools are used. Set up screens or shields in areas where workers may be exposed to flying fragments, chips, dust, and excessive noise.
How should you handle air hoses?
Use hoses specifically designed to resist abrasion, cutting, crushing and failure from continuous flexing and both hose and fittings should be of the correct diameter.
  • Choose air-supply hoses that have a minimum working pressure rating of 10bar g (150 psig) or 150% of the maximum working pressure produced in the system, whichever is higher.
  • Check hoses regularly for cuts, bulges and abrasions. Tag and replace, if defective.
  • Fit a 2bar g blow down gun to the air hose and blow out the airline before connecting a tool. Hold hose firmly and blow away from yourself and others.
  • Make sure that hose connections fit properly and are equipped with a mechanical means of securing the connection (e.g. chain, wire, or positive locking device).