Miller Electric M-10 Gun manual Unit Overload, Replacing Gun Contact Tip, Turn Off power

6-3. Unit Overload

Thermostats TP1 in rectifier SR1 and TP2 in stabilizer Z1 protect the unit from damage due to overheating. If TP1 and/or TP2 opens welding output will shut off. Wait several minutes before trying to weld.

Supplementary protector CB2 (Power switch) protects transformer T1 from overload. If CB2 opens, unit power will shut off. Check input power supply, and press Power switch to turn unit back on.

6-4. Replacing Gun Contact Tip

2

1

YTurn Off power.

1 Nozzle

2 Contact Tip

Cut off welding wire at contact tip. Remove nozzle.

Remove contact tip and install new contact tip. Reinstall nozzle.

Tools Needed:

Ref. 800 797-C

6-5. Changing Drive Roll and Wire Inlet Guide

4

2

1

3

Tools Needed:

5/64 in 7/16 in

1Securing Screw

2Inlet Wire Guide

Loosen screw. Slide tip as close to drive rolls as possible without touching. Tighten screw.

3 Drive Roll

The drive roll consists of two different sized grooves. The stamped markings on the end surface of the drive roll refers to the groove on the opposite side of the drive roll. The groove closest to the motor shaft is the proper groove to thread (see Section 4-15).

Install correct drive roll for wire size and type.

4 Drive Roll Securing Nut

Turn nut one click to secure drive roll.

Ref. 802 990-A

OM-1330 Page 27