Rotary Screw Compressor

• The screw element

• Oil-free vs oil-injected screw compressors

• Compression ratio

• High pressure two-stage machines

• High capacity twin-screw machines

• Stationary vs portable diesel compressors

• Controlling outlet pressure

• Controlling compressor capacity

How portable diesel screw compressors work

• The air system – inlet air filters, inlet valve, screw element, check valve, oil-separator, minimum pressure valve

• The oil system – screw element, oil separator tank, oil separator filter, scavenge line and pipe, thermostatic valve, oil cooler, oil filters, oil stop valve

• Compressor control systems – electrical start, stop and safety systems

• Compressor control systems – pneumatic control system

Troubleshooting

• General troubleshooting advice

• Troubleshooting engine startup and shutdown problems

• Specific troubleshooting advice (overheating of compressor, overheating of diesel engine, low pressure, safety valve blows, oil in compressed air, oil out of inlet filter, water in compressed air)

• Sensors and safety devices on portable diesel compressors

Diesel engines

• Diesel basics

• Cooling system

• Engine oil system

• Air system (inlet and exhaust)

• Fuel system

• Engine control system – electronic and mechanical speed control and fuel injection systems.

Maintenance

• Standard maintenance intervals

• Maintenance procedures and information

• Compressor oil

• Engine oil

• Engine and compressor inlet filters

• Compressor and engine oil filters

• Oil separator element

• Coolers

• Fuel filters

• Engine valve clearance

• Checks to perform after maintenance (test-run)

Buying and options

• Compressor size: pressure vs capacity

• Pressure and capacity

• What pressure and capacity do you need?

• Problems when buying the wrong compressor (too high/low pressure, too high/low capacity, etc)

• Options and extras (aftercoolers, condensate traps, re-heaters, air dryers, spark arrestors, intake air shutoff valves, tool lubricators, external fuel tanks, towbar types, air outlets, built-in generators, cold start / cold climate options)

Operations

• Setting up on a new site

• Before starting the compressor

• Starting the diesel engine

• Starting compression (loading)

• Normal operation

• Stopping the compressor

• Adjusting pressure

• Opening and closing valves

• Connecting and disconnecting hoses

Planning

• Hot weather operation

• Cold weather operation

• Ambient air quality: dust, chemicals, flammable gases

• High altitude operation

• Location and access

If you work with portable diesel air compressors, in any way, this book is for you.

• Compressor operators

• On-site maintenance technicians

• Compressor technicians

• Compressor service companies

• Planners and buyers

Diesel compressors are used at all sorts of locations – construction sites, mining sites, oil-and gas fields, and many more place. These machines are often used in remote places, so if something is wrong with the machine – you are responsible to fix it. But you need to get your job done – not spend time fixing this machine.

If you work with, maintain, or repair diesel compressors, this book is for you!

It contains everything you need to know – how they work, what each part does, troubleshooting help – everything.