Thursday, July 20, 2017

How do I correctly install and adjust an Air Pressure Switch?

How do I correctly install and adjust an
Air Pressure Switch?


We get this question a lot - so we developed a step by step set of directions to help you.

Get your PDF instructions here.

What does a pressure switch do?

An air compressor pressure switch is a valuable part of your equipment.

The pressure switch tells your compressor when to stop and when to start and can help you save money and energy.

Need to order a pressure switch?
Call us - 1-888-229-9999

Tommy McGuire
McGuire Air Compressors
"Real People with Real Air Compressor Experience"

Wednesday, May 27, 2015

OSHA Requires a Compressed Air Safety Shut-Off Valve

Did you know that OSHA Requires a
Compressed Air Safety Shut-Off Valve?

The OSHA Safety Standard Regulation 29CFR CHXVII Paragraph 1926.302(b)(7) states:   All hoses exceeding 1/2-inch inside diameter shall have a safety device at the source of supply or branch line to reduce pressure in case of hose failure.

Prevent dangerous air hose whips and accidents.   Protect your most important assets: Your employees and their equipment.

offers simple but efficient protection to pneumatic systems in the event of a broken compressed air hose or pipe.  

Click here to view a PDF with the information you need to meet OSHA standards

Call us to order the safety valve and reels you need- 1-888-299-9999

Compressed Air Safety Valve - 1-888-229-9999
Another OSHA guideline publication states:
“Hoses, cables, and other equipment shall be kept clear of passageways, ladders and stairs.” 

OSHA says reduce your slips, trips and falls.
Slips, trips and falls constitute the majority of general industry accidents, which cause 15% of all accidental deaths, and are second only to motor vehicles as a cause of fatalities. The OSHA standard for walking and working surfaces apply to all permanent places of employment, except where only domestic, mining, or agricultural work is performed.

Consider adding reels to increase safety & efficiency with your electrical cords, welding cables, air hose, oil, grease, liquid/water or fuel hoses.  This could be one of your most effective equipment additions you’ll ever make…as well as one of the safest!

Owner of McGuire Air Compressors, Inc.
"Real People with Real Air Compressor Experience"

For Industrial Champion Air Compressors, Pumps, Manuals, Dryers

Reelcraft Hose Reels for air hose and other industrial applications

Deltech Refrigerated Air Dyers to reduce harmful moisture in your compressed air system

Wednesday, April 9, 2014

Three Biggest Pay-Offs in changing from mineral oil-based lubricants to Synthetic Compressor lubricants

In today’s competitive and challenging market - you need every advantage you can get! 

One simple, yet very significant advantage is selecting Quality Synthetic Compressor Lubricants over conventional, mineral oil-based lubricants for your air compressor.

Three Biggest Pay-Offs in changing from mineral oil-based lubricants to Synthetic Compressor lubricants.

#1.  Lower Your Electric Bill by increasing energy efficiency

Compressor Synthetic Lubricants can actually reduce energy consumption in many applications, up to 9% as compared to conventional mineral oils.

   Here's how...
> Compressor Synthetic Lubricants help minimize friction between moving parts. ( less friction = less amp draw )

> Energy can be lost due to "churn" as mechanical parts move through oil: Compressor Synthetics Lubricants have a lower viscosity when compared to mineral counterparts of the same ISO viscosity grade , resulting in lower churn energy loss than a mineral oil.

#2. Get a Better Return on Your Investment by extending equipment life

When you lower the energy consumption with compressor synthetic lubricants you decrease friction which means less wear. Less wear = longer life.

Whether your equipment runs in extreme hot or in cold conditions, Compressor Synthetic Lubricants are more effective over a wider range of operating temperatures than mineral-based products.

>In very hot conditions, Compressor Synthetics remain thicker for better protection.  Compressor Synthetics do not degrade in high temperatures as fast as mineral-based oils either. 

>In lower temperatures, Compressor Synthetics offer excellent flow characteristics, unlike mineral-based oils that tend to get too thick to flow well when cold and can limit protection to critical parts.

Lower Maintenance Costs by using Less Labor & Materials

Compressor Synthetic Lubricants usually last up to 8-10 times longer than mineral oil equivalents. This translates into...
>Reduced oil purchases
>Less used-oil to dispose
>Fewer oil changes - fewer hours your maintenance team must spend on oil changes

>Decreased downtime because of lubricant-related problems such as valve maintenance.

Click here to learn more valuable tips>>

Tommy McGuire
McGuire Air Compressors, Inc.
“Real People with Real Air Compressor Experience”
Email us:
Call us: 1-888-229-9999
Fax us: 1-336-229-9998

For Champion Air Compressors...

For Reelcraft Hose…

For Deltech Refrigerated Air Dryers…

Wednesday, October 9, 2013

Warehouse Sale

We've been cleaning out the warehouse and are having our
Discover refurbished and used equipment, air compressors, air dryers, and electric motors for sale.
Call for a complete listing of items for sale...

Thursday, February 21, 2013

Top Compressed Air Safety Guidelines

Here's a simple chart to remind folks to stay safe around Compressed Air...
and keep OSHA happy too!

Tommy McGuire
Owner of McGuire Air Compressors, Inc.
"Real People with Real Air Compressor Experience"
Champion Industrial Air Compressors
Genuine Reelcraft Hose Reels:
Deltech Refrigerated Air Dyers:


Wednesday, October 10, 2012

We need more air pressure! How do I figure out how much more we need?

·        ­­­Does your air pressure keep dropping while you are using your tools & equipment?
·        Have you added or are planning to add new equipment which uses air?
·        Are your air compressors working hard all the time- but you just aren’t sure how to figure how much more horsepower you need?

When your business counts on air – you need to know the valuable formulas and steps to help accurately determine how many CFM you use. You also need to know how to accurately figure how much additional CFM and horsepower you need when considering a new air compressor?

Here are some specific formulas that can help you determine how many CFM you presently use and how many more CFM you need to meet your desired PSIG. We will show you how to take this information and use it to determine how much air compressor horsepower you actually need.

Find out how many CFM your air compressor delivers

1. STOP the compressor unit

2. CLOSE the outlet valve on the tank/air receiver

3. DRAIN the condensate from air receiver until there is 0 PSIG -
then close the drain valve

4. NOTE THE TIME- in minutes & seconds (Best to write it down.) Then START THE UNIT.
When the compressor unit stops and unloads – then NOTE THE TIME again – in minutes & seconds. Convert the minutes into seconds and then total the number of seconds it takes between START and STOP/UNLOAD.

5. NOTE the GUAGE PSIG reading

6. NOTE the Air Receiver/Tank GALLON SIZE


TANK GALLONS x .538* x PSIG divided by SECONDS


You have an 80 gallon tank, your total start to stop/unload time was
3 minutes and 30 seconds. Change the minutes to seconds timed
(60 x 3= 180 seconds plus 30 seconds which totals 210). You will use the total number of seconds (210) and the noted 175 PSIG within the formula as shown below:

80 multiplied by .536 = 42.88
42.88 multiplied by 175 (Example PSIG) = 7504.00
7504.00 divided by 210 (total seconds)= 35.74 CFM delivered

The example shows that the air compressor is delivering 35.74 cfm

Your Response to this evaluation should be to compare this number with what your air compressor manufacturer says your CFM should be and evaluate how efficiently your compressor is running.
If your air compressor is within 10% of manufacturer's specifications, then the unit is OK, if not - repair unit and recalculate your needs.

Find out how many more CFM you need to raise your PSIG

1 What is your desired pressure ______?
(Our Example125 psig)

2. What is your present operating pressure_______?
(Our Example 70 psig)

3. Divide desired pressure by present operating pressure
(125 psig divided by 70 psig = 1.79)
4. This gives us the X-factor needed for this formula (1.79 )

5. Multiply present air compressor cfm (35.74) by your X-factor (1.79)
(35.74 X 1.79= 63.98 This gives you the total cfm needed –
which is 63.98 for our example)

6. Deduct your present cfm from the needed cfm
(63.98 minus 35.74 present cfm = 28.24)

7. This gives you the additional cfm needed to raise your psig to the level you actually need. (which is 28.24 additional cfm for our example)


Translate your answers into how much horsepower you actually need to operate
Divide your additional cfm needed by 3.5* (see the chart for your *actual compressor type & horsepower)
(28.24 ÷ 3.5 = 8.07 hp, which would be the additional horsepower needed for our example)

This will give you the additional horsepower you actually need.

(We will need to round up the 8.07 hp to 10 hp needed for our example. You will have to round up to the nearest standard
horsepower also.)

*CFM per compressor horsepower chart:

3.5.cfm per hp for small piston compressors ½-30 hp
4 cfm per hp for large piston 40 hp up & small screw compressors 2 hp-30 hp
4.5 cfm per hp for 40 hp-150 hp medium hp screws
5 cfm per hp for 200 hp-2000 hp large screw & centrifugal compressors

Note: Always buy CFM of delivered air at the PSIG you need…not horsepower.

Note: Always invest in at least 20% more CFM than your equipment needs. This will cover extra air usage for such things as air leaks and wear.

Follow these formulas and you can figure just how much more CFM and air compressor horsepower you really need to get the job done!


Compressor Terms you should know:

Cubic Feet Per Minute (cfm) - Volumetric air flow rate.

"psig" means pounds per square inch, GAGE pressure. Gage pressure is the absolute pressure of something, with the atmospheric pressure subtracted. In practice, when someone gives a pressure in just "psi" they probably mean gage pressure. If they mean absolute, they should be using "psia."

Gauge Pressure - The pressure determined by most instruments and gauges, usually expressed in psig. Barometric pressure must be considered to obtain true or absolute pressure.

Load Time - Time period from when a compressor loads until it unloads.

Unload - (No load) Compressor operation in which no air is delivered due to the intake being closed or modified not to allow inlet air to be trapped.

Receiver - A vessel or tank used for storage of gas under pressure. In a large compressed air system there may be primary and secondary receivers.

      Tommy McGuire

McGuire Air Compressors, Inc.
"Real People with Real Compressor Experience"