Working in Wet Soil or Tight Trench

Do Not Grade with Compactor

Keep Compactor Parallel with Material

Initial Compacting

Lift Depths

OPERATION

Shut off the compactor and lift it into the air to a new position, or using minimum boom down-force slide the compactor along the ground. Avoid dragging the compactor's plate across the material surface ('ironing') while the motor is running. Forces exerted on the compactor by 'ironing' can cause premature failure.

Another cause of premature mount failure occurs when working in very wet soil and/or a very tight trench. Suction or drag when the compactor is lifted can cause the mounts to tear. In these situations fasten a chain between the compactor's upper and lower sections to relieve the lifting strain on the rubber isolators.

Never grade the trench or level backfill with the compactor. Extreme side forces can damage the rubber isolators.

Always keep the plate of the compactor parallel with the material being compacted. Compactors can operate on an angle if you keep the carrier boom down-force at 90o to the compactor base.

Start by operating the compactor in one position. Release the down force and lift the unit to a new spot. Re-apply down-force and start compact- ing. Two passes are usually required. During the initial pass the compactor should be held in each position for 8-10 seconds or as long as compaction is apparent. The second-pass should be with greater boom down-force, focusing on areas missed during the first pass.

Compact in lift depths of:

TC51: .5-1 ft (0.15-0.3 M)

TC71: .5-1 ft (0.15-0.3 M)

TC80: 1-2 ft (0.3-0.6 M)

TC91S: 1-2 ft (0.3-0.6 M)

TC151S / TC151SH: 2-3 ft (0.6-0.9 M)

TC301 / TC301H: 2-4 ft (0.6-1.2 M)

Note: using a higher material lift depth may give less than 95% soil com- paction. Materials with 5% moisture give better compaction. Narrow excavations can use higher lifts.

Compactor Owner’s Manual

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