Wallpro PS-1000, Operating Instructions Manual

When new, the carbon brushes will last approximately 50 hours of running time or 10,000 on/off cycles. 
Replace both carbon brushes when either has less than 6mm length of carbon remaining. To inspect or 
replace brushes, first unplug the machine. Carefully remove the 6 screws on the right side and 1 screw on 
the left side to remove the right and left handle covers. The vacuum swivel connector will also come apart 
when this is done. Remove the two screws holding on the Speed Control Unit (11) to allow access to the 
Brush Holder screws (17). Unscrew the two Carbon Brush Holders and remove the Carbon Brushes.

 
NOTE: When putting the Carbon Brushes back into the Carbon Brush 
Holders it is essential that both flanges go back inside the holder.
NOTE: To reinstall the same brushes, first make sure the brushes go  
back in the way they came out. Otherwise a break-in period will  
occur that will reduce motor performance and increase brush wear.

Replacing is the reverse of removal. Replace the Brush Holder screws, then 
the Speed Control Unit screws. When Replacing the 2 handle cover halves 
take great care that all wires are in place and not in a position to be pinched 
when it is retightened. It is recommended that, at least once a year, you 
take the tool to an Authorized Service Center for a thorough cleaning and 
lubrication.
If the replacement of the power supply cord is necessary, this has to be done 
by the manufacturer or their agent in order to avoid a safety hazard.

PS-1000 Wiring Diagram