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OPERATING INSTRUCTIONS
OPERATING TECHNIQUES AND PRECAUTIONS
Do not pry, twist or pull with the excavator.
The excavator is used as a way of positioning the Demolition Grab and supplying
hydraulic power to the Demolition Grab.
Do not operate the Demolition Grab on an excavator with a combination Hydraulic
Hammer/Crusher hydraulic installation kit without first isolating line-mounted
accumulators (k23).
1. Shut-off valve (k4) must be in the off (k6) position for use with the Demolition Grab.
2. Return line from hammer/compactor (Demolition Grab open) (FT).
On some later NPK hydraulic kits, the lockout feature is done automatically through the
use of an accumulator isolation valve (k26). Consult with NPK at 1-800-225-4379 if you
are unsure of what your machine is equipped with.
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