HANGCHA CBD20-AMC1, Operation And Maintenance Manua

Page: 53 / 71

49
cloth, when there is grease on the surface, immerse the cloth in alcohol to wipe(park).
–
Check if all fasteners are tight.
–
Brush carrier should be fastening and no loose. If turn or remove the brush carrier needed,
only mark can loosen the end cap bolt. Aim at marker line to tighten screw when brush carrier
reset to keep the brush in neutral position.
–
Check the coil insulation resistance regularly, when close to working temperature, it should
not be lower than defined data, otherwise dry.
–
Open the shutter regularly and check if the inner parts deformation or reversing part is
normal.
–
Often clean sand and other adhesion on the motor in order not to affect its heat dissipation.
–
Check the motor at least once half year according to the following way
a Check the outer part and clean dust on the motor;
b Clean and replace bearing, listen if there is abnormal noise during running;
c Check brush abrasion and replace if necessary.
Replacement of the Brushes
Brushes must be replaced when they are seriously worn or damaged. All brushes should be
replaced at the same time with a same specification.The newly replaced brushes needs to be
connected with the commutator closely and the contact area should be assured for 75%.
–
Remove the connecting plug of the motor.
–
Screw out the three fixed bolts on the motor hood.
–
Take down the motor hood and replace the new brushes.
Brush abrasion
–
When replace brush, use 00 crocus cloth to polish, pull abrasive cloth to left or right when
polishing.