18
Troubleshooting: Mechanical & Electrical Problems
Trouble
Probable Cause
Remedy
Board
thickness does
not match
digital display
Digital
display
not
calibrated
properly.
Follow calibration procedures
Chain jumping Inadequate chain tension.
Adjust chain tension.
Sprockets misaligned.
Align sprockets.
Sprockets worn.
Replace sprockets.
No incoming power.
Verify unit is connected to power, and main switch
is set to “
｜
”.
Machine will
not start/restart
or repeatedly
trips circuit
breaker or
blows fuses
Overload automatic reset has not
reset.
When planer overloads on the circuit breaker built into
the motor starter, it takes time for the machine to cool
down before restart. Allow unit to adequately cool
before attempting restart. If problem persists. Check
amp setting on the motor starter inside the electrical
enclosure.
One cause of overloading trips which are not electrical
in nature is too heavy a cut. The solution is to take a
lighter cut. If too deep a cut is not the problem, then
check the amp setting on the overload relay. Match the
full load amps on the motor as noted on the motor plate.
If amp setting is electrical lead. Check amp setting on
motor starter.
Building circuit breaker trips or
fuse blows.
Verify that planer is on circuit of correct size. If circuit
size is correct, there is probably a loose electrical lead.
Check amp setting on motor starte
r
Loose electrical connections.
Go through all the electrical connections on the planer
including motor connections, verifying the tightmess of
each. Look for any signs of electrical
arcing which is
a sure indicator of loose connections or circuit overload.
Motor starter failure
Examine motor starter for burned or failed components. If
damage is found, replace motor starter. If motor starter looks
okay but is still suspect, you have two options: Have a qualified
electrician test the motor starter for function, or purchase a
new starter and establish if that was the problem on change
out (continued)
