Logosol PH260 - Page 36

36
Problem Possible Cause Remedy
The upper cutter rotates a long time after
the machine has been shut off (the dece-
leration should be max. 10 seconds).
1. The fuse on the brake card has
blown.
2. The brake card is defect.
1. Replace the glass fuse on the card.
2. Replace the defect brake card.
On the new brake card there is a
potentiometer that has to be adjusted
(about 1/4 turn from 0).
One of the motors will not start. 1. Defect contactor.
2. Defect motor.
3. A cable to the contactor or to the mo-
tor is loose.
1. The electrical system may only be
opened by a qualied electrician:
Replace the defect contactor.
2. The electrical system may only be
opened by a qualied electrician:
Replace the defect motor.
3. The electrical system may only be
opened by a qualied electrician:
Ensure that all cables are correctly
connected.
The workpiece is fed jerkily through the
machine.
1. The machine table is covered with
resin or rust.
2. One of the feed rollers has been
bent.
1. Clean the table with Logosol’s
Machine Cleaner (ref. no.
7500-001-5000) and lubricate it with
Logosol’s Low Friction Agent (ref.
no. 7500-001-5050).
2. Replace the bent feed roller.
The machine runs for a while but then
stops.
1. One of the motors, in most cases
the motor of the upper cutter, gets
overheated.
1. See the point The motor gets
overheated.
The motor gets overheated. 1. Wood debris has accumulated in the
chassis of the machine or around
the cooling fans of the motors.
2. Dull knives.
3. Too low voltage in the power supply.
4. Loose or bad connection in the
power supply to the machine or in the
electrical system of the machine.
5. The upper cutter removes too much
wood.
6. The feeding speed is too high.
1. Make sure that wood debris has not
accumulated in the machine, and
that the cooling fans of the motors
have free ow. If the motors are
kept clean they will be cooled more
efciently.
2. Grind or replace the knives.
3. The electrical system may only be
opened by a qualied electrician:
Check that you have the correct
voltage on all phases.
4. The electrical system may only be
opened by a qualied electrician:
First of all, check that the connecting
cable has the correct current and
voltage during operation. Also check
that all wires are correctly connected
in the electrical system and motors
of the machine.
5. If the workpiece is to wide, of a hard
sort of wood or of varying oversizes:
plane it into size before the nal
machining.
6. Decrease the feeding speed.
Play in the adjusting crank of the mova-
ble side cutter.
1. The bronze bearing in the bearing
housing of the crank is defect. One
reason for this can be that the crank
has been turned when the locking
handle of the carriage is tightened.
1. Replace the bronze bearing and re-
member to open the locking handle
under the table before adjusting the
side cutter.
Vibration or rumble in the side cutter. 1. The moulding knives are incorrectly
mounted.
2. The moulding knives are incorrectly
ground.
3. Defect bearing.
4. The spindle shaft has been bent due
to overloading.
5. The belt transmission is defect.
1. Demount the cutter head, and clean
and mount the knives and the chip
breakers correctly. Identical knives
should be mounted on opposite
sides of the cutter.
2. Grind the knives in pairs so that they
are identical on the opposite sides of
the cutter.
3. Replace the bearing.
4. Replace the spindle shaft.
5. Clean the belt pulleys and replace
the Poly V belt.