OPERATING INSTRUCTIONS
10
BLADE WEAR
The most important part of using a wood chipper is keeping the cutter blades sharp. The PTO/100G
is fitted with two 177 mm (7") blades. They are 42 mm wide when new.
A new blade should chip between 5 and 10 tonnes of material before sharpening. This figure will be
drastically reduced by feeding the machine with stony, sandy or muddy material.
As the blades become blunt the machine reduces the feed speed. The discharge will stop being so
cleanly cut and have more stringy shreds in it. At this point the blades should be sent to a reputable
blade sharpening company. The blades can be sharpened several times during their life. A wear mark
on the reverse side indicates the safe limit of blade wear. Replace when this line is exceeded.
BLOCKAGES
Always be aware that what you are putting into the chipper must come out. If the chips stop coming
out of the discharge tube but the chipper is taking material in - STOP IMMEDIATELY. Continuing to
feed material into a blocked machine may cause damage and will make it difficult to clear.
If the chipper becomes blocked proceed as follows:
STOP
the tractor engine and remove the ignition keys.
ENSURE
tractor engine has come to a complete stop.
REMOVE
the discharge tube. Check that it is clear.
WEARING
gloves, reach into the rotor housing and scoop out the majority of the debris
causing the blockage.
REPLACE
the discharge tube.
RESTART
the tractor engine and increase revs to achieve PTO speed of 540 rpm.
ALLOW
machine time to clear excess chips still remaining in rotor housing before you
continue feeding brushwood. Feed in a small piece of wood while watching to make sure
that it comes out of the discharge. If this does not clear it, repeat the process and carefully
inspect the discharge tube to find any obstruction.
NOTE
Continuing to feed the chipper with brushwood once it has become blocked will cause the chipper to
compact the chips in the rotor housing and it will be difficult and time consuming to clear.
AVOID THIS SITUATION - WATCH THE DISCHARGE TUBE AT ALL TIMES.
!
!
WARNING
Do not reach into the rotor housing with unprotected hands. There are
sharp blades and any small movement of the rotor may cause serious injury.
!
!
WARNING
Do not rev engine and increase PTO speed above 540rpm in an attempt to
clear blockages. Always follow procedure as outlined below to protect
operator and bystanders from ejected material.
Summary of Contents for TW PTO/100G
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