Logosol PH260 - Belt Transmissions

20
Belt transmissions, lower and upper cutter:
The motor of the upper cutter is suspended on a metal pipe (29).
Most of the belt tension is produced by the weight of the motor.
The pipe is xed in the chassis by bolts that goes through its
ends. The bolts deform the pipe ends by making them oval in
the holes of the chassis where the pipe is suspended.
By turning the pipe, the belt can be slackened or tightened.
The belt tension of the lower cutter is also produced by the weight
of the motor. This motor is xed by a bracket that is screwed
to a support. In one corner of the support there is a track,
which makes it possible to move the motor bracket upwards or
downwards to get the correct tension.
Replacing belt, cutter 1 (the lower cutter)
- Loosen the belt’s protective cover, which is held by two Allen
screws (6 mm).
- Loosen the three screws that x the tension.
- Slightly press the motor upwards in the tension track in the
motor support, and retighten the screws before removing
the belt. Press with your hand under the motor and pull off
the belt.
Warning! Crushing risk.
Never loosen the xing screws when no belt is tted.
- When the new belt is tted, loosen the screws and let the
weight of the motor tension the belt.
- Tighten the screws and restore the machine to its original
condition.
Replacing belt, cutter 4 (the upper cutter)
- Loosen the protective cover at the bottom of the back of the
machine.
- Loosen the belt’s protective cover on the side of the
machine.
- Loosen the bolts in the ends of the pipe supporting the
motor.
- Then, slightly press the motor upwards and retighten the
bolts before removing the belt.
Warning! Crushing risk.
Never loosen the bolts when no belt is tted.
- When the new belt is tted, loosen the bolts and let the weight
of the motor tension the belt.
- Tighten the bolts and restore the machine to its original
condition.
Belt Transmissions
Ensure that the power is disconnected before opening
any protective covers or carrying out any servicing on the
machine.
All the cutters are run by 3 kW motors. The number of revolutions
is geared up by so-called Poly-V belt transmissions. The belts
have to be tensioned or replaced after some time of use. When
the belts have the correct tension, they should squeal just as the
motor starts, but not when the machine is running.
Belt transmissions, side cutters:
Replacing belt, cutter 2
- Loosen the inspection cover on the right side of the
machine.
- Loosen the four Allen screws (72) that hold the protective
cover of the belt transmission (23) to the cast iron cylinder
under the machine table.
- Slacken the belt with the tensioning screw (71) on the top
of the belt transmission’s protective cover.
- Replace and then tighten the belt. Tighten the four
Allen screws holding the protective cover of the belt
transmission.
- Remount the inspection cover and test run the cutter.
Replacing belt, cutter 3
All screws are accessible from the opening on the back of the
machine, but an easier method is to remove the cover of the
chip outlet for cutter 3.
- Loosen the four Allen screws (72) that hold the protective
cover (23) of the belt transmission to the cast iron cylinder
under the machine table.
- Using the crank, move the cutter to its outermost position.
- Now the tensioning screw (71) on the top of the protective
cover can be reached from above, through the opening in
the table.
- Slacken and then replace the belt.
- Tighten the belt and then screw tight the four Allen screws
holding the belt transmission’s protective cover.
- Tighten all screws, remount the chip outlet’s cover, and then
test run the cutter.