
CHAPTER 3
3.1 PREPARING THE RMC-8 FOR OPERATION
1. Place a CBR mould body on the Compaction Base Plate and tighten lugs to securre the mould. The
sample can now be poured into the mould.
2. While holding the Rack/Compactor Hammer push in the Resting Bracket and allow the
Rack/Compactor Hammer to slowly descend until it’s resting on the sample.
3. Press the “Set” Button on the side of the counter, the first digit will begin to flash, push until desired
selected number of blows. When selected number of blows have been set the Compactor is ready for
use. (The counter is factory set to 55 blows)
4. Press the “Start” (Green) Button on the counter and the Compactor will begin the test.
5. After the test has come to an end the Compactor will automatically stop.
6. Follow steps 3 (three) to 5 (five) to repeat cycle.
3.2 REMOVING THE CBR MOULD BODY
1. Loosen the bolts holding the CBR mould body to the compaction base plate and turn the mould through
approximately 45 degrees.
2. Lift CBR mould body vertically off the compaction base plate.
3. If the CBR mould body should jam and will not turn the entire base plate should be removed. Lightly
tapping with a hammer (CLUB HAMMER) can then be used to un-jam the mould.
WARNING
Never use force to remove the CBR mould body or the compaction base plate while these are
still attached to the compaction table. Damaged to the drive unit can result from such action.
When transporting compactor never lift using the compactor table.
3.3 BELT ADJUSTMENT
1. The RMC-8 is set to perform the Modified Test.
2. The belt is supported by a single flange unit which is broad on one side and narrower on the other. The
broadside (Modified Test Flange) is used to perform the Modified Test while the narrow side is used
for the Proctor Test.
3. The adjustment bolts are used to fine adjust the selected flange ensuring even pressure of the rubber
belt against the rack.
4. To change the flange around loosen the wing nuts holding the flange by the flange handle. Rotate the
flange through 180 degree and replace the flange on the studs. After find adjustment the RMC-8 is
ready for the selected test.