Pressure Intensifier Operation; Pressure Intensifier (Booster); Rapid Continuous Clicking Is Heard And The Material Is Not Being Crushed/Sheared As Expected - NPK M20S Instruction Manual

TROUBLESHOOTING

PRESSURE INTENSIFIER OPERATION

NPK's exclusive pressure intensifier system is used in NPK Material Processors to
boost cylinder pressure to increase the jaw closing forces. When the intensifier is
working properly, a rapid clicking sound will be heard, indicating that the pressure
intensifier is being actuated as the jaws begin to close against resistance. As the jaws
grasp tighter onto the material, the clicking will begin to slow down. This slowing will
continue until the material is either cut/crushed or the Material Processor meets full
resistance. At full resistance, the clicking will slow dramatically or sometimes stop
completely.

PRESSURE INTENSIFIER (BOOSTER)

The control valve (bs10), sequence valve (bs4) and booster assembly (bs27) make up
the pressure intensifier assembly.
RAPID CONTINUOUS CLICKING IS HEARD AND THE
MATERIAL IS NOT BEING CRUSHED/SHEARED AS
EXPECTED
This indicates that the problem is not a relief or sequence valve setting, but it is in the
intensifier or the cylinder of the Material Processor. This requires further investigation
by a mechanic/technician, see "INTENSIFIER CHECKS" (clicks – does not slow down)
section on page 136.
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