SPE BEF320-1A, Руководство по эксплуатации, Страница: 5 / 32

BEF320-1A
Operating Manual
GENERAL OPERATION
It is essential that the cutters are not lowered too far and too hard onto the surface as serious
damage could be caused to the machine and cutter drum assembly.
THE cutters must be allowed to "float" on the cutter shafts without excessive downward
pressure. This floating action allows the cutters to perform as the designer intended i.e. as
cutters rather than as grinders or picks. Do not pull the control levers into reverse when cutting
as this could result in the machine reversing quickly in an uncontrolled manner.
The machine should operate smoothly with a minimum of vibration. When the depth of
cut is correctly set very little effort should be required to operate the machine.
EXCESSIVE downward pressure on the cutters may marginally improve the work rate/finish
but the definite increase in wear rates on the cutter drum assembly and machine components
is the negative result. Remember two light passes are quicker and more cost effective than
one slow heavy pass. Tests have proven conclusively that heavy downward pressure reduces
cutter and drum life by over 50%.
The BEF320 should always be operated in a forward direction. The operator varies the speed
of travel to determine the final finish having already pre-set the depth control. It is
recommended that the machine is not operated in reverse whilst the cutters are in contact with
the surface. When lifting the cutter drum from the work surface it is not necessary to turn the
hand wheel - lift upwards by simply operating the hydraulic lift lever.
Always use the shortest possible length of extension cable. To avoid voltage drop the cable
must be a minimum of 6mm. Maximum length of cable can then be up to 75 metres.
The motor is fitted with thermal overload protection. Should the thermal trip be activated then
it must be allowed to cool and reset. Almost without exception if a motor trips out it is an
indicator of a fault elsewhere either on the machine or with the power supply or simply that the
machine is being overloaded.
Note: the thermal trip on the motor is a fail safe device and is not intended to be
continuously reset.
If the motor repeatedly cuts out then it will be damaged.
Possible causes are: An inadequate or faulty power supply.
Overloading of the machine.
Mechanical fault on the machine e.g. bearing or cutter drum failure.
The machine can only be overloaded by setting the depth of cut to low. When overloaded the
machine can vibrate which will in turn damage the electrical switch components.
The electric control panel is fitted with two safety devices which further protect the motor from
damage. The switches are set by the manufacturer and under no circumstances should be
adjusted.
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