|Review by phtools||posted 04-16-2011 12:43 PM||15016 views||0 times favorited||10 comments|
First of all, this is a good product overall. If you are going to buy one, or just have, you might benefit from the following setup tips:
1. The oil filler cap is a single piece, consisting of the cap and attached tube. It may look like you can separate the cap from the tube, but don’t bother to try. Simply screw the whole piece into the threaded oil filler opening. No need to tighten too hard. Finger tight plus a bit more will be more than sufficient. You will not need to remove this cap to check oil level, only to add oil as may be needed. Use the sight glass below the filler cap to check oil levels.
2. The silver air filter housing screws in easily to the motor. Don’t over-tighten. The outside can rotate simply by loosening the wing nut. I put a piece of cheesecloth over the inlet and secure with a twist-tie or rubber band. This can help prevent larger pieces of sawdust or ambient debris from clogging the filter. Check to be sure the air supply is not overly restricted if you do this. If the unit builds up pressure again within several seconds after bleeding, you are OK.
3. The unit will recycle at about 95 pounds of pressure, and will cut off at about 125. Usually very quick to do this.
4. Be certain to add oil as described in the manual and run for about 30 minutes to break in. The oil may look bubbly or frothy in the sight glass, but that is not a problem.
5. After breaking in, if not already set, dial in 90psi on the pressure regulator. Turn the red ring inward several turns to give leeway in turning the outer black dial. Then with the tank pressure up, turn the black dial left or right until the gauge needle sits on 90. When done, turn the smaller red ring leftward until it gently seats against the larger black dial. This will provide a ‘stop’ at 90psi, which should be the greatest pressure you will need in general use.
6. This compressor is best used for nailers and inflation, and air tools which don’t use a constant large volume of air to run. Tools like a dual-action sander use so much air that a unit like this Mac700 will have to constantly run to attempt to keep up. Not good. Avoid tools needing more than 90psi/3.3cfm to operate properly.
7. As to noise, this unit isn’t bad at all. If you aren’t too familiar with compressors, don’t expect whisper-level operation; it’s still a compressor after all, and will make some noise in recycling. It’s just better than some others.
All in all, a very good product.