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5 Troubleshooting
Faults
The motor does not work after
power on
There is abnormal sound and no
rotation or slow rotation after
power-on
Annular fire or large sparks
generated on the commutator
Slow rotation and sound during
operation
Remarks: Non-professional personnel are not allowed to disassemble the machine for maintenance, which
may cause failure of the machine due to improper maintenance.
6 Description of the accessories
Accessories:
Guard x1
Wrench x1
7 Maintenance and service
Maintenance and cleaning
1. Before repairing power tool or changing parts and attachment, be sure to remove the plug from the
socket.
2. Power tool and ventilation gaps must be kept clean to improve the quality and safety of work.
3 .If the dustproof cover is damaged, it must be replaced immediately. It is best to entrust the customer
service of our company to replace it. After each operation, the tool joint must be cleaned.
4. The power tool produced by our company are strictly inspected for quality. If the machine still breaks
down, please take it to our authorized customer service department for repair.
5. When operating the tool, pay attention to the cutting direction, and the direction of pushing the tool must
be opposite to the rotation direction of the tool.
When inquiring and ordering parts, be sure to provide the model number of parts of the machine.
Disposal of waste
Damaged machinery, attachment and waste packaging materials must be recycled in an environmentally
friendly manner.
Service and customer consultation
For warranty, repair or replacement of parts such as breakdown drawings of the machine and information
on spare parts, please inquire with a qualified dealer.
1. Power failure
2. Connector fallen
3. Poor switch contact or action
failure of the switch
4. The carbon brush does not
contact the commutator
surface
1. Switch contact burned out
2. Mechanically stuck
1. Armature short circuit
2. Poor contact between the
carbon brush and commutator
3. The commutator surface is not
smooth and clean
1. Damaged grinding plate
2. The grinding plate touches the
reinforcement
Carbon brush x2
Causes
Troubleshooting
1. Repair the power supply
2. Check all the connectors
3. Repair or replace the switch
4. Replace the carbon brush
1. Switch contact burned out
2. Mechanically stuck
1. Repair or replace the armature
2. Replace the carbon brush
3. Remove the sundries to make
the commutator surface smooth
and clean
1. Replace the grinding plate
2. Re-select the operation point
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