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What is the definition of air compressor?

A component that pressurizes ambient air and directs it into a pneumatic system.

Learn more about air compressor in the class "Preventive Maintenance for Fluid Systems 140" below.

Preventive Maintenance for Fluid Systems 140

Hydraulics and Pneumatics Department

Class Information

Tooling U classes are offered at the beginner, intermediate, and advanced levels.
The typical class consists of 12 to 25 lessons and typically requires at least two hours of instruction time.

Class Name	Preventive Maintenance for Fluid Systems 140
Description	This class provides and introduction to preventive maintenance for hydraulic and pneumatic fluid systems.
Prerequisites	none
Difficulty	Beginner
Number of Lessons	20

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Class Outline

Class Objectives

Objectives

Benefits of Preventive Maintenance

Preventive Maintenance Tasks

Who's Responsible for Preventive Maintenance?

Fluid System Problems: Common Causes

What Is Contamination?

How Does Contamination Occur?

Internal Contamination

Filters and Strainers

Oil Selection

Inadequate Oil Supply

Leakage

Seal Selection

Seal Maintenance

Heat Build-Up

Monitoring Pressure

Checking System Operation

Pneumatic System Maintenance

Recordkeeping

Summary

Define preventive maintenance.

Describe preventive maintenance tasks.

Describe the persons responsible for preventive maintenance.

List common causes of fluid system problems.

Describe contamination.

Describe internal contamination.

Describe strainers and filters.

Describe how to check oil levels.

Describe external leaks.

Describe O-ring seals.

Describe the effects of operating conditions on seals.

Describe heat exchangers.

Describe devices for monitoring pressure.

Describe system operation checks.

Distinguish between hydraulic and pneumatic system maintenance.

Describe the main purpose of recordkeeping.

Class Vocabulary

Term	Definition
absorbent filter	A filter used for trapping very fine and fine particulate matter. Absorbent filters consist of paper and resin.
adsorbent filter	A filter used for trapping various sizes of particulate matter. Adsorbent filters consist of clay and chemically treated paper.
air compressor	A component that pressurizes ambient air and directs it into a pneumatic system.
air-cooled heat exchanger	A component in a hydraulic system that relieves excessive heat with cool air. Heat is transferred from the hydraulic fluid to the air.
Bourdon tube gage	An instrument used for checking pressure levels in hydraulic systems.
cavitation	An unwanted condition that occurs in hydraulic pumps due to excess air in the pump. Cavitation occurs when the suction is greater than the pressure levels, which causes air bubbles to collapse at the outlet.
clean-out plate	A removable plate located at both ends of the reservoir. Clean-out plates are easily removed to allow access to the inside of the reservoir.
clearance	The space between components that allows movement and lubrication.
cocking	The improper, angled seating of a seal.
conductor	The components such as pipes, tubes, and hoses that convey liquids throughout a hydraulic system.
contaminant	Any foreign substance that may cause a loss of efficiency or a breakdown in a fluid system.
contamination	The presence of any unwanted substances in a fluid system. Contamination is the primary cause of problems in fluid systems.
downtime	Unproductive blocks of time during which machine operations cease, often due to mechanical problems.
dynamic seal	A seal designed to allow movement of component parts. Dynamic seals wear faster than static seals.
efficiency	The amount of power output by a fluid power system compared to the amount of power input.
external leakage	The unintentional movement of fluid from a system into the environment.
filter	A screen used for trapping very fine and fine particulate matter.
filter media	Layers of various materials used in a filter to trap particulate matter. Filters are referrred to as single-media or multi-media, depending on the number of layers they possess.
flowmeter	An instrument used for checking fluid flow in hydraulic systems.
fluid system designer	The person responsible for choosing compatible parts and assembling a fluid system.
heat exchanger	A component that helps relieve the excessive heat that builds up in a hydraulic system.
heater	A component in a hydraulic system that maintains the oil at a set temperature so it does not burn. The heater is located in the reservoir near the pump inlet and is controlled with a thermostat.
hydraulic system	A power transmission system that uses the force of flowing liquids to transmit power.
internal leakage	The unintentional movement of fluid from one component to another within the system.
maintenance	The necessary and basic support and repair of machines. Maintenance includes tasks such as lubricating, adjusting, and replacement of parts.
maintenance personnel	The people responsible for performing basic support and repair of machines.
mechanical filter	A strainer used for trapping coarse particulate matter. Mechanical filters use a metal cloth or screen to trap contaminants.
nonpositive seal	A seal that allows a small, intentional amount of fluid to pass.
operator	A person trained to run a specific type of machine on a daily basis.
o-ring seal	A rubber ring that forms a seal under pressure. O-rings are capable of both static and dynamic seals and are capable of containing very high pressures.
particulate matter	Solid contaminants. Particulate matter includes metal, dirt, sand, and dust.
petroleum-based oil	A hydraulic fluid developed from petroleum. Petroleum-based oils are the most common hydraulic fluids.
pneumatic system	A power transmission system that uses the force of flowing gases to transmit power.
positive seal	A seal that does not allow any amount of fluid to pass.
power	The rate of doing work in a specified period of time.
preventive maintenance	Maintenance performed while a machine is in working order to keep it from breaking down.
reactive maintenance	Maintenance performed only after a machine fails or experiences problems.
relief valve	A non-adjustable control valve that regulates pressure in a hydraulic system.
Saybolt Universal Second	The unit of measurement for oil viscosity in the United States. Saybolt Universal Second is abbreviated as SUS or SSU.
sight glass	Holes that allow you to see inside of the reservoir. Sight glass holes are located in the clean-out plates on both ends of the reservoir.
sludge	A form of contamination. Sludge is liquid matter that forms in the reservoir.
static seal	A seal designed to allow no movement.
strainer	A screen used for trapping large and coarse particulate matter.
synthetic oil	A hydraulic fluid that contains no petroleum. Synthetic oils are ideal for hydraulic systems that are used near a fire hazard.
viscosity	A fluid's resistance to flow. Viscosity is used to describe friction of fluid.
water-cooled heat exchanger	A component in a hydraulic system that relieves excessive heat with cold water. Heat is transferred from the hydraulic fluid to the water.
watt density	The amount of energy emanating from each square inch of a heater.

What is the definition of air compressor?

A component that pressurizes ambient air and directs it into a pneumatic system. Learn more about air compressor in the class "Preventive Maintenance for Fluid Systems 140" below.

Preventive Maintenance for Fluid Systems 140

Hydraulics and Pneumatics Department

A component that pressurizes ambient air and directs it into a pneumatic system.

Learn more about air compressor in the class "Preventive Maintenance for Fluid Systems 140" below.