Trouble-Shooting - Powermatic 201 Instruction Manual And Parts List

TROUBLE-SHOOTING: MECHANICAL & ELECTRICAL PROBLEMS
(201 Planer)
PROBLEM
Uneven depth
of cut side to side
Board thickness
does not match depth
of cut scale
Chain jumping
Machine will not start/
restart or repeatedly
trips circuit breaker or
blows fuses
POSSIBLE CAUSE
1. Knife projection
2. Cutterhead not level with bed. 2. Level bed.
1. Depth of cut scale incorrect.
1. Inadequate tension.
2. Sprockets misaligned.
3. Sprockets worn.
1. Unit not plugged in.
2. Overload automatic
reset has not reset.
3. Planer frequently trips.
4. Building circuit breaker
trips or fuse blows.
5. Loose electrical
connections.
6. Motor starter failure.
SOLUTION
1. Adjust knife projection.
1. Adjust depth of cut scale.
1. Adjust chain tension.
2. Align sprockets.
3. Replace sprockets.
1. Verify unit is connected to power.
2. 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 box.
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. Verify that planer is on a circuit of correct
size. If circuit size is correct, there is probably a
loose electrical lead. Check amp setting on motor
starter.
5. Go through all of the electrical connections on the
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. 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.
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