Humboldt H-4215 Rapid Soil Processor - Manual (Page 2)

Introduction
Compact all-metal soil processor allows customer to produce five-point
moisture density relationship test results in about 5 hours. Processor also
handles samples for rapid compaction of a family of curves test. Processes
up to 30 lbs. of lean-to-fat and tough clays at field moisture in fewer than
15 minutes. Automatically separates and retains up to 3/4" rocks from soil to
prolong screen life. Processes soil to pass a No. 4 screen. Offset rotating drum
is motor driven; pre-set adjustments aren’t necessary. Automatic operation
frees up technician’s time. Order easy-to-install replacement screen separately.
Replacement parts are available. Overall dimensions: 32 x 36 x 53" (813 x 915 x
1346mm). Shipping wt. 408 lbs. (184kg)
Operation
The Rapid Soil Processor was designed and constructed to process Field
Sample Moist Soil Only. After the material has been processed, it can be rerun
regardless of moisture content; this is beneficial to reduce drying time or pro-
duce smaller particles to absorb moisture. This machine can be used to blend
various types of soil regardless of moisture content but attempting to process
dry chunks could damage the screen and the machine.
DO NOT ATTEMPT TO TEST LARGER THAN 3/4 INCH AGGREGATE.
The Rapid Soil Processor is designed to process moist soils containing aggre-
gates up to 3/4 inch diameter maximum. The machine is constructed to accom-
modate 14-gauge screens. This is determined by the type of material and the
amount of gravel in the material to be processed.
Safety
1. CAUTION: The machine has 2,325 ft. lbs. of torque on the drum shaft.
2. The Guard over the drum gear and chain should be in a closed position
when the machine is in operation. It is easily raised for cleaning and loading
the machine.
3. The machine is equipped with three switches. Switch #1 on the arm of the
pressure plate automatically shuts the switch off before pressure damages
the screen or drum. Switch #2 is manually operated to control the machine
at any time and position. Switch 3 on the safety guard must be closed for
the processor to operate.
4. DRY MATERIAL OR MATERIAL CONTAINING AGGREGATE OVER 3/4
INCH SHOULD NOT BE PROCESSED.
5. The Spring Tension on the Pressure Plate, which releases gravel without
damaging the screen is Pre-Set and should not be changed.
6. The Weight on the Pressure Plate Arm has been pre-determined and should
be sufficient to move material into the screen.