Troubleshooting; Determine The Type Of Problem; Determine The Cause Of The Problem; Loss Of Power - NPK M20S Instruction Manual

TROUBLESHOOTING

DETERMINE THE TYPE OF PROBLEM

Performance problems are classified as "LOSS OF POWER" or "LOSS OF CYCLE
SPEED" (assuming the problem is not due to misapplication).

1. LOSS OF POWER

NPK Material Processor jaw crushing/cutting forces are determined by the
operating pressure setting and NPK pressure intensifier performance.
2. LOSS OF CYCLE SPEED
NPK Material Processor cycle speed is determined by oil flow to the unit. The
hydraulic installation circuit for the Material Processor must be set to provide the
correct flow.

DETERMINE THE CAUSE OF THE PROBLEM

Technical problems are caused by either the NPK Material Processor or the carrier's
hydraulic system (hydraulic installation kit for the Material Processor). Checking the
hydraulic pressure and flow will determine if the problem is in the Material Processor or
the carrier. If the pressure and flow to the Processor are correct, the problem is in the
Material Processor.
LOSS OF POWER
Loss of power can be caused by a low carrier relief valve setting or by a low Material
Processor relief valve setting. Verify the correct relief valve settings of the carrier and
the Material Processor.
CARRIER RELIEF VALVE SETTINGS" on page 134.)
If the relief valve pressures are to specification, proceed to the "INTENSIFIER
CHECKS" troubleshooting chart on page 135 and the "PRESSURE INTENSIFIER
OPERATION" section on page 137.
(See "PROCESSOR SEQUENCE, RELIEF VALVE AND
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