Official Course Description: MCCCD Approval: 10/26/04
PFT210 20052-20066	L+L	5 Credit(s)	5 Period(s)
Compressor Function and Operation
Compressor function, operation, and construction with emphasis on the maintenance, repair, and overhaul procedures for reciprocating compressors. Prerequisites: Registered apprentice status or permission of the apprenticeship coordinator.

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MCCCD Official Course Competencies:
PFT210   20052-20066	Compressor Function and Operation

1.	Identify specific types of compresesors and their parts. (I)
2.	Describe the basic characteristics of the reciprocating compressor, including its operation and applications. (II)
3.	List common compressor problems, possible causes and appropriate action. (III)
4.	Identify and describe the function of compressor components. (IV)
5.	Explain the need for capacity control and summarize the methods of gas bypass and cylinder unloading. (V)
6.	Describe the purpose and process for compressor alignment. (VI)
7.	Review safe and proper practices for working with compressors. (VII)
8.	Identify and describe the operation and function of control and protection devices found on compressors. (VIII)
9.	Given manufacturer's manuals, locate specific information. (IX)
10.	Describe the York, Carrier, and Trane-Worthington, cylinder unloading systems. (X)
11.	Demonstrate the steps in preparing a compressor and worksite for teardown and inspection. (XI)
12.	Disassemble and inspect the internal parts of specific compressors. (XI)
13.	Replace the compressor's main bearing. (XI)
14.	Demonstrate and describe the procedures for reassembling compressors. (XII)
15.	Perform the necessary tests and checks for compressor start up. (XIII)
16.	Describe routine maintenance procedures, including how often specific items should be checked. (XIV)
17.	Test, repair, and reassemble semi-hermetic compressors. (XV)

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MCCCD Official Course Outline:
PFT210   20052-20066	Compressor Function and Operation

I. Overview A. Compressor function in the system B. Types of compressors C. Prime movers II. Reciprocating Compressors A. Construction B. Size, speed, cycle, and efficiency C. Lubrication systems and oils III. Compressor and System-Related Problems A. Lubrication B. Liquid flood back C. High head pressure D. Low suction pressure E. Refrigerant charge F. Superheat G. Low head pressure H. High suction pressure I. Inefficient compressor IV. Compressor Components V. Methods of Capacity Modulation A. Multispeed B. Multiple compressors C. Cylinder unloading D. Hot gas bypass VI. Compressor Alignment A. Purpose of alignment B. Belt drive alignment C. Direct-drive coupling alignment VII. Related Safety Practices A. Refrigerant pressure B. Valve spring pressures C. Testing pressures D. Prime mover isolation E. Tool safety VIII. Compressor Control and Protection Devices A. High and low pressure controls B. Oil failure control C. Internal relief valve D. Motor starters and overloads E. Internal motor temperature sensors F. Crankcase heaters IX. Use of Manufacturer's Manual A. Procedures and specifications B. Wear tolerances C. Parts lists X. Compressor Cylinder Unloading Systems A. Carrier B. Trane - Worthington C. York XI. Compressor Inspection A. Preparing Compressor and Area for Teardown B. Disassembly and inspection C. Inspection of internal parts D. Main bearing replacement XII. Compressor Reassembly XIII. Compressor Start-Up XIV. Compressor Preventative Maintenance A. Importance of Preventative Maintenance B. Procedures common to most compressors XV. Semi-Hermetic Compressors A. Stator and rotor test B. Stator and rotor removal C. Stator rewinding D. Reassembly E. Terminal seal repairs

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