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35 Cards in this Set
- Front
- Back
Compressor systems are pneumatic systems that operate |
Above atmospheric pressure |
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A typical pneumatic system requires several basic components |
Compressor Receiver tank Filters Pressure regulators Lubricators Mufflers Dryers Actuators Control valve Conductors Safety valve |
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In compressed air systems the air is compressed in an |
Electric, gasoline or diesel driven compressor |
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Compressed air is stored in |
Receiver tanks |
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Controls maybe of |
Individual Auto start stop with safety valve Constant speed control or dual control |
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What is the pressure setting on a safety relief valve |
10-20psi |
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An air receiving tank must hold an adequate air supply to prevent the system from a pressure drop of more than |
5psi when all service outlets are being used |
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The pressure switch cut in and cut out differential should be |
15psi |
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What should be installed at the lowest part of the receiver |
Automatic moisture trap |
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Pre-filters or air cleaners are installed on the |
Suction inlet to the compressor |
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Oil separators are generally installed between the |
Compressor and reciever |
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After coolers bring the temperature of the compressed air down to |
Ambient temperature |
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Intercoolers are used in conjunction with two stage compressors. Their purpose is to cool the compressor air by |
10F between the cylinder stages |
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Intercoolers decrease the amount of power consumed by |
15% |
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Air dryers should use an absorbing material like |
Silica gel Activated alumina |
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Service outlets are usually equipped with |
Quick connects |
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Oil lubricators are required on some installations for |
Automatic lubrication of pneumatic tools |
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What are the three types of compressors |
Reciprocating Rotary vane Flow compressor |
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Reciprocating compressors are most common and are available in ______or ______ cylinder models |
Single or multi cylinder |
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Increased capacity is accomplished by using different diameter cylinders the largest |
Is first in line and uses the discharge line for the next smalller cylinder |
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Diaphragm compressors prevent |
Contaminants from entering the airstream |
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There are two types of rotary vane compressors |
Single Multiple |
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The major moving part of a rotary vane compressor has |
Vanes and slots that trap the air |
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Flow compressors use two types |
Screw Turbo |
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Both types of flow compressors operate at |
High speeds |
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Small distribution systems use what material |
Type K and L |
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Larger distribution systems use what material |
Sched 40 black iron pipe Threaded up to 2in Welded over 2in |
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All piping should be _______ in the direction of flow |
Graded |
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Drip legs should be taken off the _______ of the distribution piping |
Bottom |
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What is the minimum size of service outlet |
1/2in |
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What can be installed to remove water from piping |
Water trap with automatic drain |
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Dew point is reached when |
100% humidity is reached |
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To obtain 1cuft of compr air at 100psig the compr needs to move |
7cuft into the suction inlet |
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For every 20C drop in temp, the air can hold only how much moisture |
1/2 |
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Air dryers are installed _____ of the receiving tank |
Downstream |