Humboldt H-1356D Marshall Mechanical Compactors - Manual (Page 2)

Introduction
Humbolt's Standard-Duty, 4-inch automatic compactors ease sample preparation through
automatic, mechanical compaction. These compactors can be adjusted to provide a set
number of hammer blows and then shut off. All three models include the mechanical
compactor, as well as a H-1334B automatic counter, oak pedestal, hammer and mold.
The H-1336D is a single-mold configuration, The H-1346D is a dual-mold configuration
and the H-1356D provides a triple-mold configuration. All machines meet ASTM D6926,
D5581 and AASHTO T245 and PTM705.
It is recommended to have additional mold and hammer assemblies for your compactor
for ease of use. Hammers are available in three configurations: the standard H-1338A, a
4" flat foot used in the H-1336D with the stationary mold; H-1338B, a 4" tapered-foot
hammer for use with the H-1346D and H-1356D rotating molds and, H-1338C, a 4"
Hammer with a "Canadian" tapered foot for rotating molds.
Operating Instructions
For preparation of specimens and compaction procedures, see ASTM D5581 &
AASHTO T245.
1. Remove pin from top of compaction hammer.
2. Lean hammer toward front of machine so as to disengage it from the chain.
Lift hammer out of mold.
3. Lift mold holder (spring loaded) to remove the mold, base plate and collar.
4. Fill mold with mixture - follow ASTM D-5581 & AASHTO T-245 procedures.
5. Replace mold, base plate & collar by reversing step 3 above.
6. Replace hammer(s) and lower surcharge weight(s).
7. On the automatic triple compactor, to get same count for all three hammers,
start the hammer on the right first.
8. To start the machine, plug the power supply cord into the power source, if an
automatic model use the receptacle on the counter chassis and set the counter
for the proper number. Actuate the power switch.
WARNING: All hammer compaction weights must be down before starting the
compactor. To put the hammers in the down position hold the hammer weight then
press the release pin down to release the weight and lower it to rest of the mold.
CAUTION: Keep hands, clothing and other objects away from moving parts when the
machine is in operation.
Cleaning & Lubrication
• Keep all parts clean and lubricated. Clean molds and hammer feet thoroughly before
each use. Make sure all mounting hardware is tight.
• After using the H-1346D or H-1356D compactors for several weeks clean as follows:
Remove the bottom rotating chain guard and clean all asphalt from the chain
and around the turntables. Grease if necessary. Replace guards before resuming
operations. Cleanliness improves the operation.