Komatsu BR380JG-1E0, Shop Manual, Page: 385 / 841

SEN02305-01 30 Testing and adjusting
44
BR380JG-1E0
Inspection and maintenance of
magnetic separator
k
There is danger that the magnetic field may
cause malfunction of pacemakers, so per-
sons wearing pacemakers should not
approach within a range of 5 m from the
magnetic separator.
k
The magnetic force will attract metal tools
and pieces of steel, and there is danger of
getting your fingers or hands caught
between such objects and the attracting
surface, so do not approach the magnetic
separator when carrying metal tools or
pieces of steel.
k
Use a steel object removal belt to remove
any pieces of steel attracted to the mag-
netic separator. There is danger of injury,
so do not approach the magnetic separator
while it is being operated.
k
When storing this machine or removing the
magnetic separator, set up cones and make
a no entry area. Do not allow any person
wearing a pacemaker to approach within a
range of 5 m from the magnetic separator.
k
Before starting operations, check that there
is no misalignment or snaking of the belt.
k
If there is any misalignment or snaking of
the belt, there is danger that the belt will be
damaged or cut.
k
There is danger of the magnetic field caus-
ing damage, so do not bring watches, cellu-
lar phones, or other precision instruments
close to the magnetic separator.
k
There is danger of the stored data being
damaged by the magnetic field, so do not
carry bank cards, credit cards, or other
cards with magnetic strips when approach-
ing the magnetic separator.
k
When conduction a trial run of the machine,
be sure to run the motor at low speed and
check that the conveyor belt does not make
a snaky movement.
k
If metal pieces are drawn by the magnetic
separator, they will be ejected, accelerated
by the metal piece discharging belt. As that
poses a big danger, provide a safety cover
at the discharging outlet to prevent the
metal pieces from flying off.
k
Do not feed concrete debris containing
reinforcing bars larger than 13 mm in diam-
eter and longer than 600 mm, since they
can damage the conveyor belt.
The discharging belt for this machine has the same
structure as that for the conventional belt conveyor.
Pay attention to the following points, when starting
the day's work or daily inspection.
q
Has the belt been biased or does it make a
snaky movement?
q
Is the belt tension appropriate?
q
Are debris stuck to the backside of the belt?
q
Has the belt surface been scratched or peeled
off?
q
Has the belt scraper not been damaged?
q
Have metal parts or bolts at the connection of
the belt end not been damaged or fallen off?
If anything unusual is found, take the following
actions.
1) In case the belt is deflected or makes a
snaky movement;
Adjust the position of the take-up unit,
referring to the figure. The take-up unit
consists of a base plate, a pillow block and
a tap bolt. Loosen the lock bolt on the
base plate and adjust the position of the
take-up unit with the tap bolt. After the
adjustment, tighten the lock bolt again.
When there is a clearance more than 10
mm at both ends from the inner surface of
the flange at the end of the pulley, the belt
is at a proper position.