13
Maintenance and inspection
Before do any maintenance, ensure unplug the plug.
1. Inspecting the demolition hammer
Use a dull accessory, such as bull point, cutter, etc., will cause motor malfunction and
efficiency degraded. Replace with a new one when your accessory is abased.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that they are properly tightened. Any
loose should be tighten immediately, failure to do maybe cause serious hazard.
3. Inspecting the bit retainer
The retainer may become loose due to excessive use. Make sure the bit shank position is
hold securely, if any wear or damage is found, ask the authorized service people to maintenance.
4. Maintenance the motor
The motor is the heart of the machine, please avoid any damage to the winding, or any
water and oil to wet it.
5. Carbon brush replacements
Carbon brushes are consumable parts, when it becomes worn or "limit worn" it can cause
motor trouble, we use auto-stop carbon brush, it stopped automatically when carbon brush worn
out, at that time, replace a new couple of them as following procedure:
1
Screw M4x10
2
Screw M5x12
3
Fan cover
4
The cover of carbon bush holder
5
Carbon brush
When replace the carbon brush, just dismantle parts as order1,2,3…,
after that assembly in reverse order
