21
Table 2 - Troubleshooting Chart, Cutter Electrical Components
Symptom
Possible Cause
Solution
Maint. Level
1. Motor will not
start.
No AC electric power.
Check the power supply and circuit
breaker or fuses.
Operator
Worn or broken AC power
cord.
Replace old cord with a new cord of the
same specifications.
Service Center
Trigger on-off switch worn or
defective.
Replace switch.
Service Center
Motor rotor windings
defective.
Replace rotor and commutator
assembly.
Service Center
Motor stator windings
defective.
Replace motor.
Service Center
2. Motor overheats. Low voltage.
Check AC power supply.
Operator
Motor ventilation slots
obstructed.
Clean any dirt or other obstructions
from motor ventilation slots.
Operator
Worn fixed and/or moving
blade.
Replace blades if worn or damaged.
Operator
Motor brushes worn.
Replace motor brushes if worn
(less than 0.2 inch [5 mm] long).
Service Center
Commutator worn.
Replace rotor and commutator
assembly.
Service Center
Motor fan damaged.
Replace motor fan.
Service Center
Motor windings dirty.
Clean dirty windings.
Service Center
Motor bearings worn.
Replace motor bearings.
Service Center
Motor rotor windings
damaged.
Replace rotor and commutator
assembly.
Service Center
Motor stator windings
damaged.
Replace motor.
Service Center
3. Motor does
not stop when
trigger is
released.
Trigger on-off switch defective. Replace switch.
Service Center
Other electrical problem.
Troubleshoot and repair electrical
circuit.
Service Center
4. Electromagnetic
disturbances in
power line.
Fault in EMI filter.
Replace EMI filter.
Service Center
Motor brushes worn.
Replace motor brushes if worn
(less than 0.2 inch [5 mm] long).
Service Center
Commutator worn.
Replace rotor and commutator
assembly.
Service Center
(Refer to Table 3 for hydraulic component troubleshooting.)
Summary of Contents for EFBE5017
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