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TROUBLE-SHOOTING: MECHANICAL & ELECTRICAL PROBLEMS
(201 Planer)
PROBLEM POSSIBLE CAUSE SOLUTION
Uneven depth 1. Knife projection 1. Adjust knife projection.
of cut side to side 2. Cutterhead not level with bed. 2. Level bed.
Board thickness 1. Depth of cut scale incorrect. 1. Adjust depth of cut scale.
does not match depth
of cut scale
Chain jumping 1. Inadequate tension. 1. Adjust chain tension.
2. Sprockets misaligned. 2. Align sprockets.
3. Sprockets worn. 3. Replace sprockets.
Machine will not start/ 1. Unit not plugged in. 1. Verify unit is connected to power.
restart or repeatedly 2. Overload automatic 2. When planer overloads on the circuit
trips circuit breaker or reset has not reset. breaker built into the motor starter, it takes time for
blows fuses 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 box.
3. Planer frequently trips. 3. One cause of overload trips which are not
electrical in nature is too heavy of a cut. The
solution is to take a lighter cut. If too deep of 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 correct then there is probably a
loose electrical lead or a failed component. See
items 9 & 10 below.
4. Building circuit breaker 4. Verify that planer is on a circuit of correct
trips or fuse blows. size. If circuit size is correct, there is probably a
loose electrical lead. Check amp setting on motor
starter.
5. Loose electrical 5. Go through all of the electrical connections on the
connections. planer including motor connections, verifying the
tightness of each. Look for any signs of electrical
arcing which is a sure indicator of loose connections
or circuit overload.
6. Motor starter failure. 6. Examine motor starter for burned or failed
components. If damage is found, replace motor
starter. If motor starter looks OK 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 changeout.
If you have access to a voltmeter, you can
separate a starter failure from a motor failure by
first, verifying incoming voltage at 220+/-20 and
second, checking the voltage between starter
motor at 220+/-20.
If incoming voltage is incorrect, you have a power
supply problem.