Finn BARK BLOWER BB-1208, Руководство по эксплуатации и каталог запасных частей

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BARK BLOWER ADJUSTMENTS:
Your Bark Blower has been designed to be as simple as possible to operate. The feed roll and airlock are
designed to create a smooth, consistent flow of material from the hopper to the discharge. The agitator has
been designed to eliminate possible material bridging in the hopper and to help improve mulch consistency
as it enters the feed roll chamber. However, material conditions can change from one load to the next or
from one day to the next. The only adjustment the operator should have to make is to the drag conveyor
speed. Adjusting the floor speed will allow the Bark Blower to efficiently convey many different types of
mulch.
Knowing when and how much to adjust the floor is the key to maximizing the machine’s performance. The
floor conveyor speed is controlled by the Floor Speed Toggle Switch on the electrical control box and by the
Material Feed Toggle Switch on the remote. The floor speed can be adjusted from 0% to 100% on the Floor
Speed display with 0% being the slowest (0 RPM) and 100% being the fastest (approx. 8 RPM). For most
materials, a setting of 30% is a good starting point. The floor speed can be increased (5% increments are
recommended) until certain warning signs appear. They include the following:
A. CONSISTENT HOSE SHOCK
The Bark Blower uses a large amount of air to blow the mulch material through the discharge hose, which
can become difficult for an operator to handle. If rough shock waves become consistently tough on the
operator at the end of the hose, the floor can be turned down to smooth out the flow of material into the
airlock. Cutting back on the engine RPM can also smooth out the hose since there will be less air being
pumped through the hose. Hose shock is usually due to partial plugging around the discharge. When the
material gets dislodged, the larger clumps are shot through the hose and can make it jump significantly.
Another adjustment that could help with hose shock is the airlock speed itself. Refer to the Airlock section
of the "Material Feed System" on pg. 13 for instructions on how to adjust the airlock speed. Certain mate-
rials may run more smoothly with a faster or slower airlock. Generally, the airlock should not be run any
slower than 8 RPM and can be adjusted up to 15 RPM.
B. EXCESSIVE AUTO-REVERSING
If the airlock starts to auto-reverse regularly, (i.e. more than three times a minute), then the airlock is being
overfed and the floor should be turned down. Excessive auto-reversing leads to less production than if the
floor was just turned down to a lower RPM. This condition will occur more often with stringy mulch or less
processed material that contains larger chunks of wood that the airlock may have to cut.
C. REGULARLY TRIPPING THE BLOWER RELIEF
The blower on your machine has a relief valve in the air line to protect the blower against a large back pres-
sure that could build if the line becomes plugged. The relief valve, set for 14 PSI, is located directly behind
the blower in the engine area on the front of the machine. A blockage, temporary or otherwise, can trip the
relief, which causes a loud whining noise to be heard from the engine area. Occasional blowing through the
relief is expected, as long as the machine can clear itself. However, if the relief goes off repeatedly in a 10
second span, then the discharge area or hose is in danger of becoming completely blocked. The floor speed
should be immediately reduced until the relief valve is not heard consistently going off. Partial plugging
most often occurs with less processed material or if the mulch is wet and dense.
The gate may also be used to help smooth out the flow of material and improve production. Lowering the
gate effectively shrinks the opening in the back of the machine that the material must pass through as it
enters the feed roll housing and then the airlock. Sometimes reducing the size of that opening may produce
a more consistent flow of material, especially with finer material such as compost.