Fire Prevention - Haybuster H-1130 Operating Instructions And Parts Reference

1.8

Fire Prevention

Grinding wood, hay, and other products in a tub grinder produces a large amount of potentially combustible material.
The risks of fire can be significantly reduced with proper operating and maintenance procedures. This does include
frequent removal of dust, debris, and other combustible materials.
Most of the products that are ground are dry and the grinding process can produce fine, dusty material. The grinding
process can produce heat and the spinning rotor will circulate air within the grinding chamber. For a fire to start, fuel,
oxygen and heat in sufficient quantity, must be present. During normal operation and with a properly maintained tub
grinder, the material being ground will move through the grinding chamber so quickly that it doesn't have a chance to
heat up sufficiently to start a fire. Also, the rapid rate that a tub grinder can pile material will quickly smother small hot
spots that might occur during normal grinding operations. Keeping the material moving through the machine and across
the top of the rotor is important to keep frictional heating of the material to a minimum.
NEVER leave the vicinity of the unit with the engine running.
PROPER OPERATION OF THE TUB GRINDER:
• Do not grind materials any finer than necessary. Finely ground materials will produce more dust and
increase the risk of fire. If finely ground materials are required, it is better to grind the materials coarse
first with large opening screens installed in the grinder and then regrind them to the desired consistency
by installing smaller opening screens in the grinder. Be especially cautious when grinding materials that
can burn easily.
• When filling the tub grinder during start-up begin by filling the rear of the tub and avoid placing materials
on the spinning rotor. When material begins to fall over the rotor, set the governor control on "Manual"
and rotate the tub slowly while continuing to fill the tub. Use the tub cover to control thrown objects as
much as possible. When the tub is 1/2 to 2/3 full, the governor control can be set to "auto" and grinding
operations can resume normally. Do not allow the tub to stop for any significant amount of time with
material over the rotor to minimize frictional heating.
• Do not smoke when working with combustible materials.
REMOVAL AND CLEANING INSTRUCTIONS:
• Clean the engine compartment or electric motor area daily or more often if conditions require it be done
more frequently. When cleaning the engine compartment, always clean the top of the engine and the
areas around exhaust manifolds, exhaust plumbing and turbochargers.
• Check the rotor box for debris built up around the rotor. Remove material that may be packed tight near
the bearings, on shaft or other rotating components because it will become hot due to friction.
• At shutdown, always clean and remove all dust, debris, or combustible material off the entire grinder. Use
high-pressure air or water if necessary. Always move the grinder and all other equipment away from the
ground material pile before leaving the job site in case of smoldering combustion in the ground material.
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