46
UP 300 Service Manual
Operation Guide 12- Method of servicing
nozzle wire feeding wheel and nozzle
Tool
2mm hex wrench
1. Withdraw the wire, then turn off the device, remove the nozzle wire cover, and pull out the nozzle fan plug;
2. Push the nozzle cover out from the direction shown;
•
Use a hex wrench to remove the illustrated screw and remove the wire block.
Use a brush to clean the wire feed roller and the wire feed channel.
Note: 1. Remove the nozzle cover by hand; do not use excessive force to avoid
affecting the nozzle height;
2. When installing the nozzle cover, pay attention to the fact that the heating wire
can’t be caught in the lower right corner.
First remove the wire, then
remove the nozzle with a wrench
Note: Be careful of burns
Use alcohol lamp to
carbonize the residual
wire in the nozzle at
high temperature,
and then remove the
residual carbide in the
nozzle.
Note: Be careful of
burns, pay attention
to fire prevention.
