PUMP 5450266 - Caterpillar

Preparation for Compaction
The office configures both a compaction layer and a current elevation layer for the compactor display. Both layers are updated as the compactor works.CAESultra compares the current elevation with the new elevation of the compactor wheel. From the difference in elevation, CAESultra determines either that new trash has been deposited or that compaction is in progress. The elevation increases when new trash is added. The elevation decreases when trash is compacted.CAESultra must have a current elevation for the area that will be compacted. If no current elevation exists, then compaction cannot be determined for the first machine pass. In this situation, the compactor should be driven over the work area before trash is deposited. This action will establish a current elevation.At the end of the day, the newly compacted area of the landfill is covered and the surface is considered as compacted. At the start of the next day, before compaction begins, the compaction from the previous day should be cleared. However, the current elevation layer must not be cleared.ReferenceOperation and Maintenance Manual, "Resetting Compaction Area".CAESultra can calculate the surface area that is worked each day. The compaction must be cleared at the start of each day to ensure that the surface area for the day is correct. Surface area is used by the office for various reports.Note: Compaction must not be reset during the day. If compaction is reset before the daily work is completed, then the minimum number of passes over the area must be established again.A compactor may be relocated to an area where other machines have been working. When this situation occurs, the current elevation layer on the new compactor may be out of date. This situation will result in invalid compaction and thick lift areas. An up to date current elevation, which is supplied by the office, must be loaded onto the new compactor display before compaction work begins.Materials may occasionally be excavated from the landfill. Once material is removed, the current elevation for the affected area must be updated. If this information is not updated, then invalid compaction and volumes will occur.Note: Failure to update current elevation will result in corruption of both the individual and the collective machine productivity figures for volume and density reports.Compaction Requirements
The office specifies three settings that determine when full compaction is reached. The values for these settings vary based on the model of the compactor. The three specifications are:
Maximum allowed height increase at any time
Maximum allowed height change for the last pass
Minimum required number of passes over an areaFull compaction is only achieved if the following requirements are fulfilled:
Height increase never exceeds the maximum allowed height increase
Height change for the last pass does not exceed the maximum allowed height change
Compactor completes the minimum specified number of passes over an areaA thick lift state occurs when the height increase exceeds the maximum allowed increase. Areas with a thick lift status cannot be compacted.ReferenceOperation and Maintenance Manual, "Thick Lift Detection".When the height change for the last