Air leaks on compressed air systems are a significant cost to workshops. If air compressors are not turned off, they can be running un-attended during evenings, weekends and holidays, as air leaks call for the compressor to recharge the pressure in the system.
If a typical 5kw compressor runs unattended for five minutes per hour, this can cost approximately 42kWh of wasted power per week (£350/year based on 16p per kWh).
Air compressor timer
Straightset has put together a very simple seven-day, programmable timer to run a motorised valve to turn the air supply from an air compressor on and off up to 24 times a day if required. The installation is simple when wired to an adjacent 240v spur, socket, or even the incoming supply for the compressor. It is simple and fail safe. This acts as a backup to turning off the air compressor.