Monday, March 21, 2016

Keep Compressor Parts on Hand



 Compressor Parts

Compressed air is used in many different applications; it is both versatile and extremely useful as a power source. Many people use compressed air as part of their work. People in industries such as construction, automotive repair, and maintenance often work with air compressors. You may have a compressor of your own in a home workshop for a variety of crafts and hobbies. Unfortunately, from time to time this equipment needs repair. The potential financial savings you could receive by fixing rather than replacing the machine are more than enough to justify the purchase of Dresser Rand compressor parts. You will then be able to complete the necessary repairs and continue on with your work.

Why are compressors so valuable? Tools that utilize air as a power source typically last longer than other tools; they are usually cooler to operate and do not pose fire and electrical hazards. Compressors are safe for the environment, even when they develop a leak. The machines are easy to use and deliver a high degree of power without tiring the operator. With so many advantages, this type of equipment is found in many work and home workshops.

In order to continue enjoying the use of the compressor, some workshop owners keep a supply of the most useful Dresser Rand compressor parts on hand. This way, they will be able to keep working without unnecessary pauses.

As you consider which Dresser Rand compressor parts to keep on hand, you can look at some of your machine’s identifying characteristics. For example, is your compressor stationary or portable? Do you measure the output in pounds per square inch (psi) or by deliverable cubic feet per minute (CFM)? In some applications, both measurements are taken. Keep this in mind as you look at the parts available to you. Do you often power more than one tool at a time with the compressor? Finally, keep a record of the parts that need to be repaired or replaced most often. This way, you will always have a well-stocked assortment of the parts you need, when you need them.

Tuesday, March 15, 2016

Replacing the Head Gasket on Your Compressor



Compressor Parts 

If your compressor leaks or fails to maintain pressure, it might be time to replace the head gasket. The head gasket provides a tight seal between the cylinder head and the valve plate assembly. Over time, this material deteriorates, allowing pressure to escape from the compressor pump. Handling the delicate gasket over multiple service calls also creates wear and tear on its surface.

Safety First!

Before you service your compressor, you must depressurize the tank. Open the drain valve and wait until all of the pressure has been removed. Also, verify that the electrical power has been shut off.

Remove the Old Head Gasket

First, remove the manifold cover by unscrewing the retaining screw. Lift the cover and locate the bolts securing the front and rear of the pump assembly. Detach the bolts so you can move the pump assembly off to the side.

Next, remove the retaining screws that secure the pump’s housing and slide the pump partially out of the housing. Using a pair of pliers, disconnect the front and rear wires, and unplug the ground wire. Once everything is separated, you should be able to pull the entire pump assembly out of the housing.

Using a socket wrench, unscrew the bolts from the assembly so you can separate the pump from the cylinder head. Remove the old gasket and eliminate any residual pieces of gasket material that may be stuck to the cylinder. A smooth surface is required so the new gasket will seal properly.

Put it Back Together

Align the new head gasket with the valve plate assembly. Be sure to seat the gasket against the side of the valve plate that has the exposed valves. Assemble the cylinder head and re-install the head bolts. Follow the manufacturer’s instructions for torque specifications.

Now you can re-connect the pump assembly and slide it into the housing. Once the housing is assembled, secure it onto the tank with the screws, and install the manifold cover. Now you are ready to work under pressure!





Monday, March 7, 2016

Maintaining Valves on Your Compressor



Compressor Valves 

Valves are critical components of any gas compressor—the machine’s performance is dependent on the condition of its suction and discharge valves. It is necessary to perform periodic maintenance on these important mechanisms so that they are able to withstand sour or dirty gas, and don’t fail in the face of flutter or high-impact forces.

Dismantle the Valves

To dismantle the valves and inner dowel pins, use a fixture or jig to pull them apart. Follow the instructions that are provided by the manufacturer. Use the proper wrenches to open the valves.

Clean the Valves

After you have disassembled the valves, examine all parts for damage and wear. Remove any residue with Trichloroethylene or diesel fuel by rubbing the plates with a soft brush. Be careful not to scratch any surfaces. Use a soft, non-cotton cloth to dry each component.

Inspect and Repair the Valves

If valve plates, damper plates, or spring plates show signs of damage, they must be replaced. If the valve’s thickness has been worn in excess of 10 percent, it will need to be changed. The seat face of each valve must be flat and free of any scratches or wear, so it won’t leak. If the valve seat is damaged, it should be replaced as well.

Reassemble the Valves

Follow the manufacturer’s instructions to perform the valve assembly. Use the fixture to tighten the valve nut. The valve plate should move freely.  When installing the valve plate, place the hollow side up toward the valve keeper. Suction valves are equipped with the unloader, so check the clearance between the valve plate and the unloader lifter. Also check the clearance between the unloading piston and the lifter.

Once reassembly has been completed, check the valves for leakage under pressure. Valve cover nuts must be tightened using a torque wrench. Refer to the manufacturer’s instructions for the proper specifications.

Performing regular maintenance and replacing parts such as damper prolongs the life of your suction and discharge valves, and ensures reliable performance of your compressor for years to come.