EP Equipment LIST JX0, Руководство по обслуживанию

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52
REV. 07/2019
DRIVE SYSTEM
5
Adjustment
-
-
After replacing the steering motor or carbon
brush, conduction test must be carried out to
the motor (see Section 5.8.3).
After replacing carbon brush, running opera-
tion must be carried out to the carbon brush:
By running the motor with repeated steering,
letting the carbon brush to be fully running,
making its surface smooth to fit the rotor.
4
Fault Motor with abnormal noise or
vibration
Cause
a. Uneven clearance between
stator and rotor;
b. Bearing failures;
c. Loosening fixing screws on
motor housing.
5
Fault Motor smoking or burning smell
Cause Stator winding short circuit, motor
burnt
6
Fault Excessive temperature rise
Cause
a. Stator winding short circuit;
b. Motor positive and negative
electrodes with surface
oxidation, resistance increases
and results in heating;
c. Bearing failure, resulting in
severe heating.
5.8.3 Checking and Testing
Checking
- Check if the motor and appearance of
cables are in good condition, and if the plug
connection is secure;
- Check if the circuit is connected.
- Carry out ON/OFF test to motor positive and
negative electrodes with a multimeter:
If connected, the motor is normal;
If not connected:
1) Broken circuits in rotor coils (replace the
motor);
Testing
When replacing the carbon brush, replace the
complete set of carbon brushes.
CAUTION
5.8.4 Control Circuit Troubleshooting
See Section 5.9.4 .