Maintenance
BETTCHER
Industries, Inc.
Manual No. 185321
June 15, 2018
Maintenance
Operation and Maintenance Manual
5-5
Fault Detection and Correction (Continued)
Fault Detection Guide
Group 3:
Grinder Motor Current.
E
RROR
N
UMBER
P
ROBABLE
C
AUSE
R
EMEDY
3.1 High Motor Current Motor bearing bad.
Replace grinder motor.
3.2 Weak Motor
Worn brushes.
Replace grinder motor.
Bad wire connection.
Check that all motor wire
connections are secure.
Group 4:
Grinder Motor Failure.
E
RROR
N
UMBER
P
ROBABLE
C
AUSE
R
EMEDY
4.1 Shorted Motor;
Electrical short in the
motor circuit
Bad wire connection.
Check that all motor wire
connections are secure. Check for
broken or worn wire insulation.
Replace or repair as needed.
4.2 Motor Overload
Blade is installed improperly.
Reinstall blade. Ensure all
surfaces are clean.
Grinding wheel is worn.
Clean and/or replace the grinding
wheel.
Motor bearing is bad.
Replace grinder motor.
Feed mechanism is worn out.
Replace auto arm assembly
4.3 Open Motor
Worn brushes.
Replace grinder motor.
Bad wire connection.
Check that all motor wire
connections are secure.
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CONFIDENTIAL
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