Like all electrical equipment, air compressors can develop faults and problems. It’s all too tempting to throw your existing equipment away or take it to a repairman but often the most common problems can be fixed by your own hand. Knowing what to look out for and how to resolve an issue is the best way to approach your Hydrovane compressor problems in GA.

Problems and Solutions
My air compressor won’t turn start.
It sounds really basic but ensure that all of the parts are connected properly, that it is connected to its power source and that you have pressed the ON switch. Oil-based machines need to have a minimum amount of oil in order to function. Adjust the pressure switches as well to see if that kick-starts anything and if you’re still having problems, consult a repair service.

My air compressor is causing too much noise.
If your compressor isn’t normally loud, you may need to check that there is enough oil to supply the proper lubrication, which will reduce noise. Make sure that all parts are tightened and that everything is in working order. Consider investing in a low-noise machine or one with vibration absorbers if the noise is too much of a problem.

My air compressor is using too much oil.
This could be caused by a number of factors, such as leaks or obstructed air filters.
Make sure that you regularly clean your air compressor as airways can get obstructed. If you suspect a leak, take it to a repairman or you could be faced with serious problems such as fire and explosions.

The air compressor’s air pressure is building too slowly.
Again, these Hydrovane compressor problems in GA could be caused by dirty filters and airways, causing the pressure buildup to slow. It may also be possible that parts have started to loosen and they need to be tightened.

The air compressor stops unexpectedly.
If your air compressor stops suddenly, it could be due to an electrical fault such as a blown fuse or it could be a general fault with the machine. Problems with the electrics should always be seen by an expert. Never attempt to solve these Hydrovane compressor problems in GA yourself as you could cause further damage or void the warranty.

My air compressor is overheated.
There could be a number of reasons for this type of Hydrovane compressor problems in GA. Excessive use, not waiting for the machine to cool down, lack of oil or lubrication and overworking the air compressor by blowing too much air into tools can all contribute to overheating.

Follow the instructions provided with your compressor to ensure you take all precautions to minimize overheating and also ensure that you take your air compressor for regular maintenance to make sure that everything is in working order.

Major Hydrovane compressor problems in GA should always be fixed by a qualified, professional repair company. If you find that your air compressor is beyond repair, call us today and we’ll help you find a replacement that meets your needs.

Whatever industrial sector you work in, rotary screw compressors are an important part of your daily routine. Compressed air has become the fourth utility and is just as vital to production, in most cases, as electricity, gas, and water. If you regularly use a rotary screw air compressor in GA, you know how important it is to properly maintain your compressor.

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Whatever industrial sector you work in, rotary screw compressors are an important part of your daily routine. Compressed air has become the fourth utility and is just as vital to production, in most cases, as electricity, gas, and water. If you regularly use a rotary screw air compressor in GA, you know how important it is to properly maintain your compressor.

But it is easily neglected, until it stops working, that is. It is important for your compressors to be properly maintained for your equipment to remain reliable and efficient, in order to maintain profitable production.

Despite their rather complex design, a rotary screw compressor’s basic function is simple – when two screws turn, air enters into a chamber. As the screws turn, the area in the chamber gets smaller, causing a decrease in volume and a rise in pressure.

But while the basic function is simple, many complex parts work together for a rotary screw air compressor to operate correctly. Thus, like any other mechanical equipment, such as a car or a lawnmower, your rotary screw compressor in GA requires regular maintenance.

Due to the complex nature of the compressor, safety, oil types, and the importance of reliable and efficient operation, it is highly recommended that you consult a trained and competent person before doing any maintenance to this type of equipment.

Practice Safety First: As with any other equipment, proper protective gear and training prior to operating, adjusting, or maintaining a compressor is required. Be aware of safety risks – always lock and tag out the electrical supply as well as the isolation valve on the compressed air piping. Confirm that the power is off with a reliable meter, and vent all air pressure prior to performing maintenance.

Lubricants: Just like a car needs regular oil changes to maintain lubrication between its moving internal parts, your rotary screw compressor in GA requires periodic lubricant changes. Oil in a rotary screw compressor is used to cool, clean, and seal, which means the compressor oil is that much more important to the compressor’s operation. If you fail to change the lubricant, it will become contaminated with acid or even varnish and clog the oil filter.

Filters: Your rotary screw compressor has an oil filter, an air inlet filter, and an air/oil separator. Like changing the oil, changing the filters will prevent your compressor’s parts from failing prematurely and prevent the oil from becoming contaminated. You should replace both the air filters and oil filters every 2000 hours of use at a minimum. In dirty environments the filters may need to be changed more often.

Inspections: The screw element of your compressor is the heart of your compressor. While they can last well over 40,000 hours, they might still incur damage before they reach that point. Overheating, improper lubrication, condensation, corrosion, over pressure, incorrect control adjustment, and vibration can all lead to premature failure. Check for oil seal leaks and bearing noise.

Motor Bearings: The motor bearings require periodic lubrication to keep the bearings cool and prevent them from thermal breakdown and premature failure. Types of motor grease and the amount of grease used are crucial in an electric motor. Over greasing motor bearings will cause premature failure. Mixing grease types will also cause bearing failure.

Questions regarding how to maintain your rotary screw compressor in GA? Give us a call today and we’ll be happy to help.

Compressed air has become a vital utility in the day-to-day operations of most companies. Businesses are well aware of the need for compressors, but there is considerable debate as to which of the two most popular types – rotary screw or reciprocating – works best in an application. As a supplier of Gardner Denver compressors, today we’re discussing similarities and differences between them to help you select the best one for your application.

Power Transmission Air Compressors

Rotary screw compressors are used extensively in applications above 30 hp and for air up to 150 psig.  Reciprocating compressors cover low horsepower and demanding applications where reliability is essential.

Gardner Denver compressors are used with a wide range of gases, but air compression is the largest application. Stationary rotary screw compressors account for about 40% of the air market, while reciprocating Gardner Denver compressors possess 21% of market share by dollars.

Above 30 hp:  Rotary screw compressors have taken over nearly all of the standard plant air 100-150 psig market above 30 hp. Improvements in the performance and reliability of these compressors, coupled with reduced maintenance and lower initial cost, are key factors driving this trend.

Although a double-acting reciprocating is still the most efficient compressor, rotary screw models have narrowed the efficiency gap. Better rotor profiles, machining improvements, and design innovations are contributing factors.
Maintenance:  When it comes to maintenance costs, Gardner Denver rotary screw compressors have an advantage over reciprocating. Double-acting reciprocating compressors typically require more periodic maintenance than rotary screws. Valves, piston rings, and other consumables on a reciprocating compressor need expensive routine maintenance.

Rotary screw compressor maintenance is limited mostly to oil, oil filter, and air/oil separator changes. At some point there is a sizable cost associated with a rotary screw air end replacement, but they often last 10 years or more.

Lubrication:  Reciprocating Gardner Denver compressors are divided into two categories – lubricated and non-lubricated. In lubricated units, oil is introduced into the compression cylinder to minimize wear of the cylinder and piston rings. In an average application, lubricated rings should last for several years. Advances in new compression ring materials are extending ring life in non-lubricated units to more than 8000 hr.

Below 30 hp:  Small air-cooled reciprocating compressors have been used extensively in applications requiring pressures up to 175 psig. Large and small air-cooled units are well suited for use in harsh environments.

The most common small reciprocating compressor is the single-acting design. Operating temperatures can reach 380 F and most units operate at sound levels above 80 dBA.

For lower horsepower applications, reciprocating Gardner Denver compressors are considered a good value because the initial purchase price is generally 40-60% less than a rotary screw compressor.

Installation:  Small reciprocating machines should be used with an air receiver. The receiver stores compressed air and minimizes the loaded run time of the compressor. Some small reciprocating compressors have a limited duty cycle of around 66%.

It is particularly important to the life of these compressors to use an adequately sized receiver. No matter what the receiver size or configuration of the compressor and receiver, small reciprocating machines are relatively easy to install. Any reciprocating compressor should always be anchored to the floor due to unbalanced forces.

The majority of small rotary packages are designed to stand-alone. Base-mounted units can be mounted on top of an air receiver. Air is discharged from rotary screw compressors without pulsations. However, it is a good idea to include a receiver in the system to smooth the control air signal back to the compressor controller and provide consistent operation.

Overall, compressed air quality from rotary screw compressors is good. Even though the rotary can be an oil-flooded machine, an efficient air/oil separator reduces oil carryover into the compressed air system to less than 5 ppm.

Need help choosing the right Gardner Denver compressor for your application?  Call us today and one of our experts will answer all your questions and assist you in making the right decision.

I know that we’ve been hearing a lot about oil free air compressors of late. Some of you might be wondering about the hype. I believe they are worth the hype and they can represent incredible value to the right customer.

I suspect that as we move forward and the technology becomes more widespread, the costs will come down and we will see the broader market turn to oil free air.

So I’m going to share the ideal situation to consider an oil free air compressor.

Where I Would Look Long And Hard At Oil Free Air Compressors.

Gardner Denver Oil Free Air Compressors do deliver 100% oil free air. No conventional air compressor can offer that. Once oil is in your compressed air it’s impossible to get it 100% out. No scientist would make that claim and no company would guarantee that their filtration system can clean air from conventional air compressor so that you get 100% oil free air all the time.

It’s just a recipe for legal troubles.

You can make those claims with an oil free air compressor.

ISO-Class 0 air is air that is 100% completely oil free. The best you can get with a conventional compressor is .1 mg/m3 under ideal conditions. I’ll admit it can be good enough but it requires a filtration system.

You don’t need to invest in or maintain an oil removal/filtration system if you use an oil free compressor. There’s a savings and depending on the quality of air you need it can be a big one over the life of a compressor.

Then there is always the risk of a contamination ‘event’ and downstream damage. This can be either from oil in the compressed air contaminating your end product – e.g. pharmaceuticals or food and beverage applications or the oil could damage your equipment that runs on compressed air e.g. pumps and tools.

Where you are looking to replace your air compressors anyway and would like to eliminate the costs or the ‘risk of expense’ associated with maintenance and repairs or product damage, that’s where there could be a big payoff. Cleaning up a disaster could well cost you far more than the oil free compressor would have cost.

If you are looking for a new compressor, the team here at Pye-Barker can guide you through the process. Please call 404-363-6000 or drop us a line and we will explore a range of options based on your circumstances with you.

“There are a thousand hacking at the branches of evil to one who is striking at the root.” Henry David Thoreau

This quote is often how I imagine the army of consultants and experts who offer advice on the improvement of - well anything and compressed air is no exception – acts.

Sure a consultant can come in and do some tests and put together a slick report and make recommendations that aren’t practical or even effective because they are hacking at branches.

If you want results from simple actions, you need to tackle the root cause of your problems – like having a dehydration headache and reaching for an aspirin… No! Drink some water and the headache won’t come back after the aspirin wears off…

Here are my top three root causes of issues with your compressed air system problems.

Root Cause #1 – System Design and Implementation.

This covers both the design of the system and the integration of the components of the system to reach the specified performance. You could write an encyclopaedia of all the wrong ways to design a compressed air system.

Once a system has been built and it is not performing as well as desired then a careful plan to adjust the system is required. This has to be a custom plan. There is no one size fits all solution.

Root Cause #2 – Poor Integration.

Often compressed air systems are not so much designed as built like a child’s Lego project. A big catalogue of bits is opened up and those bits are picked and put together to create the system. Then when the system doesn’t perform more bits are added.

Often times the added components are not properly integrated into the original controls so we see things like idle compressors consuming power, etc. Obviously unless there is complete integration the costs for the system to produce a cubic foot of compressed air will be higher than they need to be.

Root Cause #3 – Ineffective Measurement.

In compressed air systems efficiency is measured by output per unit of power E.g. scfm/kW. It’s useful to know this across the loads the system is likely to experience and in various failure modes.

A compressed air system should be designed around optimizing this number. And a system’s performance should be measured and managed against its initial design. Instead we see companies measure the costs to run parts/components of their system.

We often find with a comprehensive measurement in place, that these savings on individual parts don’t translate into savings for the system as a whole.

Obviously, measurement against a design sometimes is impossible because there was no master design for the compressed air system. In that case, I’d work from current situation and start looking for ways to reduce your output per unit of power consumer.

If your compressed air expenses are climbing (or if you can’t measure them accurately) or you think you need to expand your system, the first thing to do is to take stock of the system as a whole. If you don’t have the necessary expertise in-house, we will audit your compressed air system for you and guide you to getting the performance you need. To get started with a no-obligation discussion call 404-363-6000 or drop us a line

It’s interesting to me that a lot of compressed air systems are allowed to grow organically.

Pumping systems are precisely engineered. Requirements are specified exactly. The system is evaluated on paper, future-proofed. Those designs are evaluated and double checked… Compressed air systems are not specified per se.

Compressed air system components are specified.

A lot of compressed air systems aren’t anywhere near as well engineered. Frankly far too many systems are a built out of a mish-mash of components, often with customization and often there are oversights in integration.

Eli Goldratt wrote a lot of books about using Theory of Constraints in business settings. Initially he was famous for optimizing the production of manufacturing systems. The big mistake he saw in a business was ‘optimizing each step of the process.’ He called it striving for ‘local optima.’

Independently specifying the best compressor, best drying system, best storage tank won’t produce the most overall efficient system.

Ultimately there will be one component that is the constraint on the system and it will determine the overall performance of the system. Kind of like a chain only being as strong as it’s weakest link.

The capacity of your compressed air system will be limited by the ‘weakest link.’

If I was to design a compressed air system from the ground up I would be looking at

Then I’d specify a system based around those criteria.

We know that most systems are already up and running and now many plant managers are having to add capacity or improve air quality or sometimes doing both to their existing compressed air systems. However, when there is no overall system consideration you can end up creating something like Frankenstein’s monster.

For example: if you add a new compressor with a Variable Speed Drive to an existing compressed air system. Say that new compressor runs at 50% speed and power. Say the system’s existing modulating compressor has cut its output and is now running at 20% capacity. That modulating compressor could still be using 75% of its full power load.

The new VSD operated compressor might be able to handle the base load at about 70% capacity and consuming 70% power. Instead, in this example, two compressors are running at 125% of the necessary power.

That’s obviously not optimal.

For a start you’d want is to update the controls for the system so that the VSD compressor handles the base load and the modulating compressor comes on to handle demand over a threshold and it is shut down when demand is below that threshold.

That’s really only the beginning of system optimization.

If your compressed air expenses are climbing (or if you can’t measure them accurately) or you think you need to expand your system, the first thing to do is to take stock of the system as a whole. If you don’t have the necessary expertise in-house, we will audit your compressed air system for you and guide you to getting the performance you need. To get started with a no-obligation discussion call 404-363-6000 or drop us a line

Up until very recently there have been two very good reasons why compressed air systems weren’t monitored beyond temperature and pressure.

  1. It was expensive to buy instruments capable of accurate measurements
  2. Cheap instruments were inaccurate

Thankfully, technology has come to the rescue and there are now lots of inexpensive instruments that are very accurate. Which means there is no excuse not to measure how your compressed air system performs – it pays to be tracking flow, power energy, dew point and key temperatures over time but this is very rarely done.

Stop and think about it for a second – here is a vital system to your operation. When your compressed air system goes down for planned or unplanned maintenance, the whole plant grinds to a halt or at best you’ve got a fraction of the productivity when it’s running.

On top of this – you are talking about one of your largest single energy cost centers in your plant. Surely you’d like to know if it is running efficiently or you are literally flushing perfectly good money down the toilet, as it runs inefficiently hour after hour, day after day.

All that needs to be done is logging of your data. Which is quite straight forward nowadays too.

“If You Can’t Measure It, You Can’t Improve It.”

Lord Kelvin.

The main purpose of measuring and recording data is so that you can improve performance. If we have a baseline we can see if the system is at least holding steady or if it is becoming less efficient i.e. its specific power is rising.

Having access to logged data over time will give you access to performance trends and valuable feedback when you make changes – did it make your system for efficient?

Identify Maintenance Issues

Just because the compressor controls say ‘everything functioning properly’ doesn’t mean they should be taken as gospel. Having a measuring system in place it means you can verify that what your compressor controls say is true.

Ensuring Pressure Stability

One of the common goals of a compressed air system is to provide a steady supply of compressed air at the right pressure – again, this is hard to monitor without data logging. Compressed air systems can take some wild swings in pressure. Some are just part and parcel of life and some have underlying causes. With data it can be possible to identify reoccurring pressure problems and pinpoint the causes.

Troubleshoot Problems.

When you have a problem, the best thing you can do is go back and review the actual data of what happened rather than rely on the memories of those involved. It’s easier to correct what actually went wrong rather than what you think may have gone wrong.

Verify Your Savings

If senior management is going to spend money improving your equipment they generally want proof that your project is going to pay off. Data logging systems give you that proof. Unfortunately it can mean that if your project fails you’ve got proof of that too. But we know you’re smarter than to recommend a project that won’t improve the operation.

Sizing Equipment

Data on the performance of your compressed air system is a big benefit when working with vendors. Firstly, it means they can’t sell you an over-specked system by exploiting your ignorance. Secondly it means you can have a more informed discussion based on hard data about what you can do to actually reach your goals for your system – be it around energy efficiency, flow rates, or air quality.

It also means you’ll know very fast if your investment was the right one or it wasn’t.

If you’d like to start monitoring the performance of your compressed air system the best thing to do is start with a compressed air audit. As part of the audit Pye-Barker’s team of engineers can design up a robust and inexpensive data monitoring system to suit your compressed air system. To get the process started call 404-363-6000 or drop us a line

When you’ve grown up around air compressors – literally in my case, it means that the jargon is second nature. However I know I often forget this when speaking to clients and often there is confusion when a couple of different terms get blurred.

So I thought I’d take the time to remind you of those easy to confuse definitions.

Compressor Capacity Definitions

Capacity is the quantity of air the compressor can pump out. Capacity is rated at based on the conditions of pressure, temperature and moisture content existing at the compressor inlet flange.

Mass flow (lb/min or kg/hr) Compressor performance is specified by a curve of delivery pressure against a mass flow rate for a constant velocity:

CFM (Cubic Feet per Minute) (M3/min) is a volumetric measurement not dependent on inlet conditions such as temperature, pressure and humidity.

ACFM (Actual Cubic Feet per Minute) (M3/min) represents ‘useful air’ and is independent of the seal losses through the machine. The commonly used value for seal losses with carbon seals is about 1%. Some centrifugal compressors may have other air losses between the inlet and discharge flanges.

ICFM (Inlet Cubic Feet per Minute) (or M3/hr) is a measure of the air entering the compressor. ICFM is the most common method of determining centrifugal compressor selection.

FAD (Free Air Delivered) indicates delivered air at inlet conditions. FAD is read before the inlet filter and inlet piping thus not taking into account this pressure drop which is normally anywhere from .2 to .5 PSIA with a relatively clean filter. This can be misleading because performance is calculated on an inlet pressure that is higher than the actual air volume entering the unit resulting in lower output than expected.

ICFM, ACFM and FAD are used interchangeably to reference delivered air. When using published data to run operating performance comparisons it is important to use ICFM or ACFM or FAD consistently. Be clear if inlet pressure is being acquired or estimated.

SCFM (Standard Cubic Feet per Minute) (Nm3/hr) is the CFM at normal inlet conditions of 14.5 PSIA(1 bar), 68° F (20°C), and 0% relative humidity. SCFM can be based on inlet or discharge and it should be specified one way or the other. The most common use is inlet flange measurement.

Operating comparisons should only be evaluated at the same inlet temperature, pressure, relative humidity and cooling water conditions, as well as the same discharge pressure.

A good supplier will want you to specify worst case conditions, i.e. warmest conditions to insure the compressor is capable of meeting the desired output. If you don’t you’ll get the standard design conditions of:

Compressor Pressure Definitions

PSI is a pressure rating which means pounds per square inch.

PSIG is gauge pressure which reads the psi above the ambient or barometric pressure:

PSIA is ambient barometric pressure that varies with the altitude and the weather. This is a very important value when evaluating or estimating any compressor performance; particularly, centrifugal compressors. PSIA is needed to convert ICFM or ACFM to SCFM (M3/hr to Nm3/hr).

Understanding Horsepower and power cost

Motor horsepower – references the nameplate horsepower.

(BHP) Brake Horsepower is the input power required at the compressor input shaft to drive compressor at rated flow and rated pressure.

Input Motor Power in kW – (can be measured or calculated) that generates kWh – the amount of power consumed which drives the power bill. Input motor power is affected by such factors as motor efficiency, power factor, motor conditions, starter and disconnect conditions, power quality and many more.

Specific Power

SCFM (Nm3/hr) is typically the flow rating (projected or measured) for an input kW. With this data, each unit’s specific power in SCFM or Nm3/hr/kW input is calculated. (Note that many manufacturers use BHP/100 cfm.)

BHP/100 cfm does not include the actual operating energy requirement (such as other losses in the couplings, main drive, and controls which increase the projected operating up to 20%).

I hope this guide has explained some of the subtle differences between different air compressor performance measures. If you need help assessing your needs for a new air compressor or having trouble with the performance of an existing unit then give the team at Pye-Barker a call on 404-363-6000 or drop us a line and we will take care of you.

There are really only two ways to make a profit in business. Reduce your costs of production or Sell more of your products. The president of your company and your CFO are not doubt admonishing you to cut costs as much as you can.

I’m sure you’ve shared the same mission with your team. One of the biggest opportunities to cut costs is to reduce power consumption. And one of the biggest power users of power in most production plants is:

Your Compressed Air System

Compressed Air System design is a matter of not how much you have but how well you use it. It wouldn’t be uncommon for a business to be able to cut their compressed air demands by 20% just by eliminating leaks.

Beyond that there are opportunities to get the same production for a less costs. (Or create the capacity to scale up and keep your costs constant). Here’s how you can do that

Make Sure Each Piece Of Machinery Is Receiving The Right Pressure.

Unfortunately – when individual pieces of machinery aren’t getting enough air pressure, the maintenance team often just jacks up the air pressure until the complaints go away.

With only a couple of machinery operators complaining, if maintenance increases the system pressure – then it’s a given that a lot of other machinery is going to be receiving too much air.

Best practice to avoid this problem is to divide your compressed air system into zones and use regulators so that the pressure delivered to each zone matches the demand of the machinery. Depending on the complexity of your compressed air system you might want to engage an external compressed auditor (like Pye-Barker) to help guide you through this process.

After you’ve started to manage your air flow more systematically you’ll reduce your compressed air consumption – slashing your power bills by producing less compressed air.

Invest In Storage

Most compressed air systems like to be running at a constant speed, rather than whipsawing between full-load and unloaded every couple of minutes. Depending on the size of your compressor and the storage capacity of your current system this may not be possible.

When your compressors are flip-flopping between loaded or unloaded they consume a lot of power, and incur a lot of wear and tear. If that is the case it is wise to increase the storage capacity of your system to reduce power bills and break down.

You can do this with either dedicated storage, secondary storage or even offline high pressure storage.

Optimize Air Usage

Bearing in mind that it takes between 7 and 8 horsepower to deliver one pneumatic horsepower, it might pay to switch some of your air driven machinery out for more energy efficient options and use less compressed air. For example you might be able to:-

In the end the cost of a unit of compressed air is relatively static. The value you get from your investment in your compressed air is determined by how efficiently you use the air your produce. This is why compressed air auditing is essential for any business running complex compressed air systems. This advice goes double if you are considering adding more compressors to your system to accommodate ‘increased demand.’

There are always opportunities to improve your compressed air system and bring your costs into line with best practices. If you are considering investing in more air compressors or are looking to cut costs I’d recommend starting with an AirInsite compressed air audit. To arrange yours call 404-363-6000 or drop us a line and we can get the ball rolling.


Savannah Office Address:
1105 Louisville Rd
Savannah, GA 31415
TEL: (912) 238-0303
FAX: (912) 238-5214
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121 Royal Dr.
Forest Park, GA 30297
TEL: (404) 647-0986
FAX: (404) 361-8579
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452 Industrial Park Rd.
Sylvania GA 30467
FAX: (912) 564-2636
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524 Mid-Florida Dr., Suite 204
Orlando, FL 32824
FAX: (321) 282-6424
Main Switchboard:

(404) 647-0986

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