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HD-8 SERIES V
O P E R A T I N G I N S T R U C T I O N S
When the electro-hydraulic valve is adjusted in this manner, it will function only as a manual flow control. The grinder
will now operate as it would if the electronic governor were switched to the tub (manual) mode. The tub speed will be
constant and it will not change to match varying load conditions.
Contact your dealer for repair or replacement parts. When the problems are corrected, calibrate the electro-hydraulic
valve.
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6.2 Gener
6.2 Gener
6.2 Gener
6.2 General
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PROBLEM
CAUSE
REMEDY
1. No grinding capacity
1. The screen is plugged.
2. The hammers or screens are badly worn.
3. Materials are too light or fluffy.
1. Clean out the holes in the screen.
2. Replace or turn worn parts.
3. Mix the lighter material with heavier material.
4. Use a larger screen.
5. Reduce length of input material to reduce bridging in tub.
2. The tub slows down
or turns slowly.
1. The electronic governor is not adjusted properly.
2. The electronic governor system malfunctions.
3. The hydraulic pressure is low.
1. See the sections on the electronic governor in the
operations section of this manual.
2. See Troubleshooting the electronic governor in this
manual.
3a. Check oil pressure.
3b. Look for internal leakage or wear in the orbit motor or
pump.
3. The machine
vibrates excessively.
1. A hammer is broken.
2. The hammer pattern is incorrect.
3. The rotor bearing is defective.
4. The driveline is worn or misaligned.
5. Foreign material is wrapped in the rotor.
1. Replace the broken hammer. See page 48-54 for more
information about replacing hammers.
2. See page 48-54 for more information about replacing
hammers.
3. Replace the rotor bearing.
4. Replace worn part or the complete driveline.
5. Remove the foreign material.
4. The engine looses
excessive RPM’s
before the tub stops.
1. The electronic governor is not adjusted properly.
1. See the sections on the electronic governor in the
operations section of this manual.
5. The tub stalls.
1. The tub is overloaded due to wet or tough
grinding materials.
2. Too much material in the tub.
3. The tub is binding.
4. The tub hydraulic system pressure is set too
low.
5. The hydraulic oil is too hot causing electronic
governor valve to bind.
1. Blend dry material with wet material.
2. Reduce the amount of material in tub.
3. Remove material buildup between the tub and the
platform framework.
4a. Check oil pressure.
4b. Readjust the pressure relief valve to 1750 PSI max.
5. Reduce the load on the hydraulic system, or stop and
allow the hydraulic oil to cool.
6. The hydraulic oil
overheats.
1. Pressure relief valve is faulty.
2. The tub is overloaded.
3. Worn pump, control valve, hyd. motors, etc.
1. Check oil pressure (1750 PSI).
2. Reduce the amount of material in the tub.
3. Rebuild or replace the hydraulic components as
necessary.
Содержание HD-8 V Series
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