Wednesday, June 17, 2009

Checklist




Source: Hoerbiger India
Posted by Mitul Choksi

What is CFM?

CFM
  • This is the usual unit of measure for discharge air from a compressor
  • CFM is the acronym for Cubic Feet per Minute. A compressor is said to have so many cubic feet of compressed air per minute (CFM) of flow from it's discharge port.
  • When it comes to using compressed air in your plant or home workshop you will want to know how many cubic feet per minute you can expect from the discharge port of your compressor to help determine if that compressor has sufficient compressed air flow to power your air tools or other air-consuming applications.
  • To do that you need to know what CFM a particular device or tool will require to function within it's design parameters. The device or tool will require a certain number of CFM at a specific air pressure, to work properly.

A rule of thumg is that 1 HP generates about 4 CFM at the rate of 90 PSI

  • This is an industry standard, though it doesn't apply to most compressors under 10 HP. For compressors smaller than 10 HP, you will need to read the specifications for that particular unit to determine their flow and pressure rates or use the "guesstimate" of 2 CFM at 90 PSI per HP of electric motor
  • When you've sized all of your applications and totalled up all of the air you're going to need now and for the future expansion you may be undertaking in the future, and you are out searching for the right air compressor, you would divide the number of CFM you need by 4, and that will give you a rough idea of the horsepower rating of the compressor required.

Be Careful. Not all compressor manufacturers rate their compressor output the same way. You might see a compressor showing a discharge rate at what appears to be an acceptable CFM, but on closer inspection find that the figure is predicated on a much lower pressure than you might need.

Discharge rates in CFM at higher pressures are always quite a bit lower than discharge rates at lower pressures, for that same compressor.

Ensure that the unit you select will give you both the CFM you need, and the pressure your equipment demands to work properly for you.

Posted by Mitul Choksi

Friday, June 5, 2009

Additional Safety Instructions for Air Compressors



1. AIR NOZZLE
Never aim an air nozzle directly at yourself or others.
Compressed air can break the skin, or enter the bloodstream
through soft tissue or a cut, and cause a stroke or death.

2. AIR COMPRESSOR STORAGE
DO NOT store the compressor while plugged into power. If a leak develops, the compressor may run continuously, causing overheating and possibly a fire .

3. UNATTENDED TOOLS
DO NOT leave before relieving the tool of air pressure and
disconnecting it from the air hose.

4. AVOID BURNS
DO NOT touch the motor or the air supply pipe,
they will become hot during operation.

5. COMPRESSED AIR USE
Do Not use the compressor for filling breathing or diving tanks.
Compressed air from this compressor cannot be used for pharmaceutical, food or health applications.

6. AIR HOSE
Make sure your air hose has a PSI rating exceeding the
maximum PSI of your compressor, is in good condition, and is long enough to reach your work without stretching. Make sure the air lines and power cord do not come in contact with sharp or abrasive objects.

7. PLASTIC (PVC) PIPE
DO NOT use plastic pipe for high pressure air lines. It could shatter, resulting in serious injury.

8. TANK CORROSION
Drain the tank after each use to prevent corrosion and possible tank rupture. Inspect the tank for unsafe conditions such as rust, pin holes and cracks.NEVER weld or drill holes in an air tank.

9. SAFETY VALVE OR PRESSURE SWITCHES
NEVER adjust safety valve or pressure switch to allow the
compressor to build higher PSI than rated.
Keep safety valve free from paint and other accumulations to
provide safety against over-pressure.


There is danger associated with the use of air compressors. Accidents are frequently caused by lack of familiarity or failure to pay attention. Use this air compressor with respect and caution to lessen the possibility of operator injury. If normal safety precautions are overlooked or ignored, serious personal injury may occur.


For any further details feel free to contact us

Aeroflon Engineers Pvt. Ltd.
B-505, Premium House,
Opp. Gandhi Gram Railway Station,
Ahmedabad - 380 009 Gujarat (India)

Phone: 079 - 26589712
Fax: 079 - 26586954
Email:
info@aeroflon.com / aeroflon@vsnl.com/ aeroflon@gmail.com
Web:
http://www.aeroflon.com/
Our Blog:
http://blog.aeroflon.com/


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