Cover Image
close this book Wind systems for pumping water: A training manual
View the document Acknowledgments
View the document Introduction to training
View the document Training guidelines
View the document Objectives for wind system construction training
View the document Session 1 Introduction and objectives
View the document Session 2 History of wind systems
View the document Session 3 Large projects and community analysis
View the document Session 4 Shop safety and tool care
View the document Session 5 Representative drawings for construction
View the document Session 6 Shafts and bearings
View the document Session 7 Strengths and testing
View the document Session 8 Joinery
View the document Session 9 Pumps and pump design
View the document Session 10 Siting considerations
View the document Session 11 Sizing wind water pumping systems
View the document Session 12 Design considerations for pumps and windmills
View the document Session 13 How to design
View the document Session 14 Presentation of designs
View the document Session 15 Construction of wind measuring poles
View the document Session 16 Exportation for wind sites
View the document Session 17 Tower raising
View the document Session 18 Plumbing the wind system
View the document Session 19 Testing installed wind system
View the document Session 20 Presentation of projects
View the document Session 21 Maintenance - preventive and routine
View the document Bibliography
View the document Construction materials list
View the document Tool list for 24 participants
View the document Technical vocabulary
View the document Report on the wind-powered in-service training
View the document Recommendations

Session 21 Maintenance - preventive and routine

TOTAL TIME: 1 to 2 Hours

OBJECTIVES: To understand the maintenance needs of various types of wind systems and pumps

To learn maintenance techniques

To experience maintenance on a wind system

MATERIALS: Blackboard & wind waterpump system on site

PROCEDURES:

Step 1: 30 minutes

Have the group develop a list of the various parts of the wind system and pumps that will wear out, and, in a parallel column, list what will cause the wear to be maximal or minimal.

Step 2: 30 minutes

Have the group develop another list showing the maintenance necessary to prevent wear of the parts listed. Using a parallel column, make an estimate of the frequency of maintenance necessary for that part.

Trainer Note

Emphasize that wind systems, with the exception of sealed, oil bath commercial units, are usually a high maintenance technology.

Step 3: 1 hour

Have small groups perform lubrication and simulated maintenance on a working or broken wind waterpump system (if possible).

RESOURCES: Copies of Attachment 21-A

Attachment 21-A

MILL MAINTENANCE

The oil in the bowl of the windmill should be changed at least once a year with a good grade of low temperature oil. This should be done in the fall of the year, prior to the winter months, because all moisture, or water, must be removed from the bowl.

Water in the oil can accumulate as a result of changing temperatures on the humid air, which has a tendency to drive the water from the air, and because of the total enclosure, the water is then dispersed into the oil.

It has been known that, in some instances, where the mill was neglected, sufficient water had gathered in the bowl to freeze and cause breakage of the bowl. It is for this reason that we recommend that the lubricant be removed from the windmill bowl in the fall of the year, and the user should be sure that all the liquid content is removed.

When the mill is being serviced, the user may find that the oil bowl has become laden with a thick sludge, usually resulting form the use of a lower quality of oil. If the user finds the situation to be thus, then we would suggested that after he has removed the drain plug and drained out most of the material in the bowl, he use some gasoline or coal oil and rinse off all the operating parts so that the sludge that may hang on will be removed.

This sludge, if not removed regularly, can move through the bearing and into the return oil slot, and it is possible that the bearing would begin to wear.

If sludge is present in the bowl when the mill is serviced, something should be done in the way of rinsing all of it free and flushing it from the bowl before refilling with new oil.

THE PULL OUT CABLE SHOULD BE INSPECTED AT LEAST TWICE A YEAR AND, IF THE CABLE STRANDS ARE FOUND TO BE FRAYING, THE CABLE SHOULD BE REPLACED.