PACKING 5306701 - Caterpillar

Illustration 1 g03692761
Refer to Specification Sheet, QEXQ1611, "Machine Drive Power (MDP) Quick Start Guide" for more information concerning the Machine Drive Power system.Machine Drive Power (MDP) is an exclusive compaction measurement technology which collects a measure of the energy necessary to overcome rolling resistance. MDP derives a unit-less measure indication of soil stiffness, or the ability for the compacted surface to support a load. Readings are scaled in a range between 0 - 150. A soil stiffness of 150 would be comparable to flat, smooth concrete. The vibratory system can be On, or Off. The Drum can be smooth, padded, or have a shell kit installed.MDP technology has many advantages over traditional measurement systems, but the system must be used correctly in order to take full advantage. Failure to use the MDP system properly will result in false or misleading values. Use the following procedure for the best results.Note: The propel speed must be equal to or greater than 1 km/h (0.6 mph), and the travel speed range set to Low, in order for MDP to display a value, otherwise a "Signal Not Available" message will be displayed.
Set up the monitoring system to display the MDP value. For information on changing which signals are viewed on the monitoring system refer to Operation and Maintenance Manual, "Monitoring System".
Establish a target compaction value. The target value can be established using one of the following methods:Test Strip Comparison - Construct a test strip with a representative material, layer thickness, and moisture level. Establish a rolling pattern and compact the test strip at production settings (frequency, amplitude, and roller speed). The compactor has achieved maximum compaction once MDP changes less than 2 units between passes for the given soil conditions. Note the MDP value.Point Comparison - Choose a properly compacted area on the worksite that has been measured with a traditional compaction measurement system. Run the machine over this area, and note the MDP value.
Compact the worksite. During compaction of the worksite, monitor the MDP value in order to get a real-time indication of the compaction progress. Areas of concern, such as unstable soils or moisture levels, can be highlighted during this step. Using production settings compact the worksite by adding additional passes until the noted MDP value from step 2 is achieved.Be aware of the following situations:
If the soil type or conditions change with respect to the target value conditions, a new target value must be set. Repeat step 2 in order to establish a new target value.
For machines equipped with fixed frequency, if the machine starts to decouple (bounce) while in high amplitude, switch to low amplitude first, then if needed, turn off the vibratory system. For machines equipped with the variable frequency attachment, change the frequency first, then if needed, change the amplitude or turn off the vibratory system. Changes in frequency, amplitude, or vibration on/off will require resetting the MDP target value.
Validate the compacted worksite. Proofing runs require high accuracy. Establish a rolling pattern and proof roll the worksite