Hengmei PJMP2113, Operating Instructions Manual

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small oil cylinder, and close cut-off valve on the big oil cylinder. Start oil pump to put oil into small oil
cylinder until the cover open. Close the cut-off valve after hooking.
The cover dropping speed can be adjusted oil pump’s switch knob or throttle valve. The cover dropping
should be slow and steady.
2. Adjust the upper feed roller pressure
Feeding raw materia different, upper feed roller (pendulum) pressure should be adjusted accordingly.
When cutting the small round wood or big material, the upper feed roller pressure is smaller (i.e enter
flowing oil pressure to cylinder smaller). Contrariwise, when cuts smaller material, board or waste board,
the upper roller pressure is bigger (i.e enter flowing oil pressure to cylinder bigger).
When chipper working, enter stated oil pressure through oil pump (shows in Table 8).
A) When the pressure is lower than needed, open the cut-off valave on the big oil cylinder, start the oil
pump to supply the oil. When pressure achieves needed data(on pressure gauge demonstration), then close
the cut-off valve.
B) When pressure is higher than needed, open the cut-off valve, place the oil pump switch to the oil
discharge position, cylinder’s pressure can be lower.
3. Accumulator’s function
Accumulator has both storing up energy and release shock functions.
when wood chipper working, the cut-off valve should be closed. When the “pendulum” lifts, the
accumulator discharge to the cylinder. When “the pendulum” drops, the oil returns to the accumulator
from cylinder.
Because there are certain pressure nitrogen in accumulator which plays cushioning effect, thus the
“pendulum” drop steadily and no impact.
The nitrogen pressure entering accumulator is according to Table 8.
Table 8
Model Nitrogen pressure enter (Pa) Oil pressure enter (Mpa)
PJMP215 1 1.3
PJMP216 1.2
1.6
－
1.8
PJMP218 2
2.7
－
3
PJMP2113 2.5
4.5
－
5
4. The speed of “pendulum” is controled by unilateralism cut-off valave. It should be slow drop, but no
stop.
5. The Accumulator can be taken down after all the oil pressure discharge whole.