Introduction to oil-injected rotary screw air compressors

The guide starts with an detailed explanation these machines works. I believe it's important to really understand this if you want to to find the root-cause of your compressor problems.

(don't worry - I explain everything in easy to understand language, but without leaving anything important out).

• Basic compressor knowledge

• The oil-injected rotary screw air compressor

• Oil-, Air- and Control-systems

Detailed troubleshooting instructions for each problem

The guide then continues with a detailed explanation of each of the most common compressor problems.

For each problem, a flowchart is included to quickly find the root cause of the problem.

• Compressor Won't Start

• High compressor temperature

• Low pressure at point of use

• Low pressure in compressor room

• Oil in the compressed air

• Water in the compressed air

• Oil comes out of inlet valve

• Compressor won't load

• Compressor trips on overload/over-current

Explanation of each part in the air compressor

In this section of the book, each internal part of the air compressor is explained in detail.

For each part, I explain the function and location inside the air compressor.I explain how the part works, and the most common problems, and how to check if the part is still ok or not.

• Inlet valve (unloading valve)

• Compressor element (air-end)

• Oil stop valve

• Check valve

• Oil Separator vessel

• Oil separator

• Scavenge line & pipe

• Minimum pressure valve

• Thermostatic valve

• Oil filter

• Oil cooler

• After cooler

• Condensate trap

• Electrical motor & coupling

• Loading solenoid

• Unloading / blow off solenoid valve

• Cooling fan + motor

• Safety valve

• Pressure sensor / switch

• Temperature switch /sensor

• Overload relay (thermal block)

I have a ... insert make and model here - Will this guide work for my compressor?

Yes! This guide works for all oil-injected rotary screw air compressors: Atlas Copco, Ingersoll Rand, Kaeser, Compair, Chicago Pneumatic, Sullair, Quincy and many more!

All oil-injected rotary screw compressors have the same working principle, same parts and same problems. Yes, some details will vary but in general – they are all alike.

For this reason, my guide works for ALL oil-injected rotary screw air compressor.

I have two left hands - I'm really not sure I can do this?

While some parctical engineering experience is always helpful – you don’t need any special knowledge or experience with air compressors to use this guide.

The guide explains all in details and includes troubleshooting flowcharts for every part and every problem. It’s almost like I’m there holding your hand.

Will this work for my diesel- / portable air compressor?

In short: yes.

The compressor system of a diesel- /portable air compressor is 95% the same as for a stationary electric compressor. You will be able to use most of the information in this guide to fix your problem.

I want to use your guide to learn about rotary screw air compressors in general. Is it suMy guide will show you how to troubleshoot the most common air compressor problems.

• The complete workings of the whole air compressor is explained. The oil system, the air system, the control system, and all the parts are explained in depth, with pictures and diagrams.

• But if you don’t care about that, and just want to fix your compressor ASAP, that’s possible too! Just follow the troubleshooting flowcharts.itable for that?

Yes, very much.

Although the guide is primarily setup for troubleshooting help, it will definitely give you a full understanding of how oil-injected rotary screw compressors work.

I know at least one company who use it as training guide for their new technicians. And a few companies (compressor sales/maintenance) ordered multiple copies for their technicians.

Many people don’t realize how important compressed air is for their factory, until their compressor breaks down.

Compressor problems can quickly result in hours (if not days) of production downtime and a loss of thousands of dollars per hour.

Even ‘small’ problems like a water or oil in the air can have tremendous consequences when they contaminate your products or ruin your machines.

Getting Help with your Compressor Problems Can Be Difficult

Not everyone has access to reliable, quick, professional support from a compressor company.

They can take hours, or even days, before visiting you… while you are stressing out over lost production hours, deadlines, angry customers, and things like that.

In other parts of the world, a good service technician is simply not available within a few hundred miles.

That's why I created this troubleshooting guide!

• My guide will show you how to troubleshoot the most common air compressor problems.

• The complete workings of the whole air compressor is explained. The oil system, the air system, the control system, and all the parts are explained in depth, with pictures and diagrams.

• But if you don’t care about that, and just want to fix your compressor ASAP, that’s possible too! Just follow the troubleshooting flowcharts.