27
26. TROUBLESHOOTING
FAULT
TROUBLESHOOTING
FAULT REMEDY
Check whether the 220V or 110V AC
electrical power supply voltage is
normal.
Reconnect the correct electrical
voltage.
Check whether the fuse has blown or is
broken.
Replace with a new 1A fuse.
The display does not show
the numbers.
If both the above points have been
verified, the control circuit is out of order.
Send to the supplier for repair.
The numbers displayed are not correct.
Correct the dimensions on the
programmer according to the real
dimensions.
The parameter is not correct.
Calculate and enter the parameter
again.
The display shows the
numbers, but in an irregular
fashion.
After completing steps 1 and 2, turn off
the power switch and then turn it on
again.
If the numbers are still displayed in
an irregular fashion, send the
programmer to the supplier for
repair.
If the proximity switch is used with
normal induction, the coming on and
going off of the indicator light of the
switch corresponds to the top or bottom
indexing of the table.
If the indicator lights do not come on,
replace the proximity switch.
If the distance between the sensor and
the disc is greater than 1 mm.
Adjust the distance between the
sensor and the disc, which must be
less than 1 mm.
If the ENCODER is used, verify that the
ENCODER functions according to the
top and bottom indexing of the table.
If the ENCODER's axial connector
and the table are disassembled or
damaged, replace them with new
ones and carry out the repair.
The display shows the
numbers, but when the
bottom/top motor is running,
the number does not change
according to the machine's
modification of the real
dimensions.
Verify whether the A B phase complies
with the correct value of the 12 VDC
encoder signal.
If there are no changes in the A B
phases, replace the ENCODER.
Incorrect values displayed.
Check the data reset of the programmer
and the encoder's resolution
The programmer's parameter does
not conform to the table. Correct the
parameter.
27. PROBLEM - PROBABLE CAUSE - CURE
No.
Problem
Probable cause
Cure
1
Defects are noticeable
on the machined piece
Cutters are not perfectly aligned
to the reference fence or table
Adjust the tool with respect to the fence or
table
2
The workpiece twists
a) The feeding nip roller
deflects
b) cutters are worn
a)
Re-adjust the nip roller at the centre
of the workpiece to be machined
b)
Sharpen the cutters
3
Walls delimiting the
width of the machined
workpiece are not
parallel to each other.
a) The cutter edge is not
parallel to the machine
table.
b) cutters are worn
a) Adjust the tool with respect to the table
b) Sharpen the cutters
4
Irregular marks on the
workpiece surface, due
to vibration.
Pressure exerted on the piece is
not properly adjusted
Re-adjust roller pressure
5
Irregular feeding
a) Feeding pressure on the
wooden workpiece is
excessive.
b) The feeding unit position is
too high
a) Reduce pressure exerted on the sides
and upper part of the workpiece.
b) Adjust the feeding unit height
