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Wolf Dakota 100 Air Compressor


The air compressor

Our Wolf Air compressor is a single-phase compressor with a 100L air tank that can reach just under 10-Bar (about 135psi) and has enough power to supply all of the air tools we currently have at the Hackspace. It is also used to provide cooling for Boxford CNC milling machine as well as running the blasting cabinet and the plasma cutter. It is normally kept underneath the rear stairs, and it's accessories are on the shelf immediately above it.

Current Status

Date Status Comment
17th December 2018 Fully Functional Low pressure regulator sticks, but is still workable (see below).

Using the Air Compressor

Before using the compressor remember you need to :-

  • Check that there's enough oil in the compressor
  • Conduct a brief visual inspection to make sure there's no obvious damage and all the fittings are secure
  • Check the air filter isn't clogged (If it is, replace with a Vax Swift vacuum cleaner filter)
  • Make sure the both regulators are wound all the way out
  • Put a tray under the drain valve on the bottom of the tank and open it a couple of turns if it hasn't been left open after the last use, some dirty water may well drain out, and then close it again before use.
  • Plug the compressor directly into one of the metal-clad mains sockets. Do not use the multi-way extension leads as the compressor draws a high current when running.
  • Turn on the compressor
  • As pressure builds pull on the ring attached to the high pressure relief valve, make sure it operates and releases air then let go
  • The compressor will shut off automatically when the tank is full, and automatically restarts when the tank pressure drops, so make sure that nothing can easily get caught in the pulley.
  • High pressure (50-150psi) air is available from the port on the high-pressure regulator
  • Low pressure air (0-75psi) is available from the port on the low pressure regulator, in order to use the low-pressure outlet the high-pressure regulator must be set to at least 10psi above the pressure you wish to select on the low-pressure regulator

Please note the gauge on the low-pressure regulator sticks, you may have to turn the low-pressure regulator all the way up then back down to the pressure you actually want to un-stick it. If you have to do this then ensure that any tools you have connected at the time can withstand the full tank pressure!

When you're done with using the compressor for the day you should make sure the tank is empty again, either by venting it off through a tool or by opening the drain valve at the bottom of the tank a little. This may be very noisy but is the most effective way of getting water out. If you vented the air though a tool then once the pressure is gone open the drain valve over a tray to let out the accumulated water.

The compressor must not be put away with air still in the tank, it's potentially dangerous. The air tank with pressure in it is storing a great deal of energy, up to 150KJ in our one, as much as 40g of TNT so it shouldn't be left that way when not in use. Leaving the tank under pressure also means that the tank hasn't been properly drained and may have water sitting it in which can cause rusting and weaken it. This happens because when air is compressed it becomes able to contain much less moisture, so the humidity in the compressed air condenses out on the inside walls of the air tank.


Air Compressor Caretakers

Knowledgeable Users

The following people are able to provide assistance with the air compressor. If you consider yourself experienced at using air compressors and are willing to help others then please add yourself to this list

Name/Contact Notes
Steve-R In Reading about 50% of the time


These are the people who look after and repair the compressor, they're the ones to contact if there's any problems with it

Name Notes
Steve-R In reading around 50% of the time, fast response if in reading

Recent Changes

If you make any non-trivial changes to compressor or perform maintenance please note it here, delete records older than 1 yr

  • Exhaust valve o-ring replaced Jmf (talk) 08:01, 7 July 2019 (UTC)
  • New air filter system fitted Stever (talk) 14:15, 17 December 2018 (UTC)