Air Compressors

A machine for generating compressed air, typically for use by air-powered tools or paint sprayers. The compressor takes in air at atmospheric pressure, and increases it to any pressure between 1 psi above atmospheric, and 10,000 psi above atmospheric. Air compressor motors can range from fractions of a horsepower, to multiple thousands of horsepower.

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What is barring device in compressor?

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A barring device in a compressor is a mechanism or system designed to facilitate the manual rotation of the compressor shaft during startup or maintenance activities. Compressors are crucial components in various industries, and they often operate in conjunction with large motors. The barring device allows for the slow and controlled turning of the compressor shaft without the need for energizing the main motor.

Key features and purposes of a barring device in a compressor include:

Manual Rotation: The primary function of the barring device is to allow operators or maintenance personnel to manually rotate the compressor shaft. This can be necessary during startup procedures, inspections, or maintenance tasks.

Reduced Friction: The barring device is typically designed to minimize friction and resistance, enabling smooth and controlled rotation. This is essential to prevent damage to the compressor components and to ensure the safety of personnel.

Alignment Checks: During maintenance or inspection, it is often necessary to rotate the shaft to specific positions for alignment checks or to access different sections of the compressor. The barring device facilitates this process.

Emergency Situations: In the event of a motor failure or other issues preventing the normal operation of the compressor, the barring device can be crucial for emergency procedures. It allows for controlled manual rotation to address the situation.

Shaft Positioning: The device helps position the compressor shaft precisely, allowing for the correct alignment of various components, such as blades, seals, and bearings.

Safety Features: Barring devices often incorporate safety features, such as interlocks, to ensure that the compressor is not accidentally started while the barring device is engaged. This helps prevent accidents and damage to the equipment.

It's important to note that the design and implementation of barring devices can vary depending on the type and size of the compressor, as well as the specific requirements of the application. Barring devices are commonly found in large compressors used in industries such as petrochemical, refining, power generation, and other heavy industrial settings.

How do you replace an air compressor in a 1997 Cavalier?

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Note:The accumulator/drier should be replaced whenever the compressor is replaced Caution:On models with a Delco Loc 2 or Theftlock audio system be sure the lockout feature is turned off before proceeding * Have the AC system discharged.Disconnect the neagtive battery cable * Clean the compressor thourghly around the refrigerant line fittings * Remove the serpentine belt * Raise and support it securely vehicle on jackstands * Disconnect the electrical connector from the AC compressor * Disconnect the suction and discharge lines from the compressor.Both lines are mounted to the back of the compressor with a plate secured by one bolt.Plug the open fittings and discard the seals between the plate and compressor * Unbolt and remove the rear compressor mount.It may be necessary to remove the right side engine mount bolt and raise the engine to access the rear compressor mount bolts * Remove the compressor to front bracket bolts and nuts and remove the compressor from the engine compartment

How does reciprocating compressor works?

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As the piston moves up and down, it pushes air at increasing pressure into a cylinder.

What are the possible faults that can occur to an air compressor?

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Maybe if it's not working the breaker has flipped. This can be due to a whole new range of electrical issues. Also, it may be not working because it shut off due to being full of condensation water. Some will shut off when they sense they are full, some will fill until the compressor mechanically cant produce compressed air (as water (theoretically)cannot be compressed ), and some will fill until the flood the motor.

Maybe the sidewall of the compressor has rusted through creating a hole, or maybe its missing a fitting. In either case the compressor can't create a store of compressed air causing it to run constantly. Since these compressor are mostly designed for intermittent use only, it will eventually wear or burn itself out.

If the compressor itself has failed it will be due to issues in one of two categories; mechanical and electrical. If this is a refrigeration compressor, then the issue is most likely mechanical. If this is a smaller, more common sized reciprocating compressor such as one's often used to inflate car tires, then most likely the issue is electrical. It could still be a mechanical issue due to internals wearing out.

Possible electrical problems with this type of compressor:

-Loose electrical connections:

-if connections are loose the voltage drops. when the voltage drops the motor draws more current through the wire the maintain motor speed causing overheating. the most cost effective fix is total replacement.

-Breaker overloaded:

- if the breaker which the compressor draws power from is overloaded, when everything is running, the compresser cant get enough power. just like above, the motor will work too hard and overheat.

Other electrical issues provided through Google search:

  • Stator burn: Improper or unbalanced voltage and poor motor cooling.
  • Single Phase Burn: Loss of one phase on a three phase system.
  • Half Part Wind Burn: Loss of supply to one winding set on a two winding motor(Part wound).
  • Loose Connections: Loose electrical joins causing a voltage drop.
  • Starting Components: Damaged starting capacitors and relays.
  • Inpure Power Supply: Spikes or surges of current flow.
  • Shorted Power Terminals: Over torquing power terminals.

Mechanical issues with reciprocating compressor for refrigeration :

  • Flood Back: Liquid refrigerant returning to the compressor during the running cycle.
  • Flooded Start: Crank case oil diluted with liquid refrigerant due to off cycle vapour migration.
  • Liquid Slugging: Liquid refrigerant or excess amounts of oil entering the cylinders during the running cycle.
  • Excessive Discharge Temperatures: Higher than design superheated discharge gas temperatures.
  • Compressor Oil Loss: Quantity of oil returning from the system is less than that leaving the compressor.

Perform a Google search for other possible information or contact a professional such as a small motor technician, plumber, HVACR guy, electrician, or handyman.

What stores sell Ingersoll Rand air compressors?

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Many different stores sell Ingersoll Rand air compressors. Some stores like Sears, Home Depot, Lowes, and Walmart all sell Ingersoll Rand air compressors.

What is single stage air compressor?

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a comressor in whisch gas is compresed in only one stage.

Can you use a reciprocating compress replace a scroll compressor?

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A reciprocating compressor is basically a piston pump, much like if you'd take an average internal combustion engine and force it to run. A scrolling compressor uses two plates with a spiral-wound raised ledge on them. The ledges overlap and as they move in relation to each other air gets squeezed further and further into the labyrinth until it reaches the outlet port.

Where can one buy an air compressor from Sears?

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One may buy an air compressor from Sears by visiting a store in person, purchasing through the catalog system or using the online store. If one has an "Air Miles" card they may also shop via the Sears portal to collect valuable rewards.

What is an hermetic compressor?

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a fully welded or serviceable

In hermetically sealed compressor, the compressor and the motor are enclosed in the welded steel casing and the two are connected by a common shaft. This makes the whole compressor and the motor a single compact and portable unit that can be handled easily. The hermetically sealed compressor is very different from the traditional open type of compressors in which the compressor and the motor are different entities and the compressor is connected to the motor by coupling or belt.

Construction of the Hermetically Sealed Reciprocating Compressor

In hermetically sealed compressor, in one side of the enclosed casing the various parts of the compressor like cylinder, piston, connecting rod and the crankshaft are located. If it is a multi-cylinder compressor, there are more than two cylinders inside the casing. On the other side of the casing is the electric winding inside which the shaft of the motor rotates. This motor can be single speed or multi-speed motor. In hermetically sealed compressors the crankshaft of the reciprocating compressor and the rotating shaft of the motor are common. The rotating shaft of the motor extends beyond the motor and forms the crankshaft of the hermetically sealed reciprocating compressor.

All these parts of the hermetically sealed compressor are assembled and enclosed in a strong and rigid casing made up of welded steel shell. The steel shell comprises of two half rounded steel bodies that are welded together to form the casing for the hermetically sealed compressor. In some cases the two halves of the shell can be bolted together instead of welding, which permits easy opening of the casing in case of compressor burnout.

The hermetically sealed compressors have inbuilt lubrication system for the lubrication of the piston and cylinder and crankshaft. The lubricant also acts the coolant for the piston and cylinder. Additionally, the cool suction refrigerant also offers cooling effect. Externally, the casing has refrigerant suction and discharge connections that are connected to the evaporator and condenser respectively. There is also socket for the electrical connection.

The typical condenser unit with the hermetically sealed compressor is shown in above fig. Such condenser units are called as hermetic condenser units. In the other image various parts of hermetically sealed multi-cylinder reciprocating compressor are shown.

Types of Hermetic Compressors

One of the most popular types of the hermetically sealed compressors are the reciprocating compressors. They were the first to be used as the hermetically sealed compressors are still being used widely. These days the vane type of rotary compressor has become more popular. It is considered that the rotary type of hermetically sealed compressor consumes less electricity, makes lesser noise, requires lesser maintenance, and is cheaper than the reciprocating type of hermetically sealed compressor. This is because the rotary compressors has less frictional parts and have only a rotor. The centrifugal types of hermetically sealed compressor are used for the large units.

Why would your compressor freeze over?

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They are not supposed to but can for any number of reasons. You need to have a qualified HVAC tech look at your system and determine the cause if you are experiencing this. Its true unless its a heat pump which is normal in winter you should not see a heavy frost or ice. First lets examine a residential scenario without a heat pump. Freezing can be observed at the suction line the larger of the 2 copper pipes that connect between the furnace and condenser or some call it the vapor line and compressor at the condenser and on the evaporator (the inside coil) and metering device or (TXV) on higher end units. Lets examine the easy fixes first one cause can be a blocked air flow ie' a dirty air filter, a blocked evaporator coil, dirt, and dust. On some but not all units it could be a blocked suction filter, a crimped vapor or suction line. There is also the possibility that it has been caused by some kind of leak, a loose fitting, such as at the evaporator metering device which are often compression and flare connections. If the condenser has valves a valve stem packing some can be tightened and a leak fixed and some cannot, I do not recommend doing anything without first doing a simple leak check. Assuming that there is still enough refrigerant in the system with the unit off use a mild soap and apply to the points where there may be a connection as I described above, if bubbles occur, you most likely found your leak, if so do not turn more than and 1/ to a 1/4 tight and always use 2 wrenches one to tighten and 1 to hold back the other fitting. My books have illustrations and how-to-fix-yourself.