Fuses F1 And F2; Changing Drive Rolls And Wire Inlet Guide; Aligning Drive Rolls And Wire Guide - MAC TOOLS MW50 Owner's Manual

5-3. Fuses F1 And F2

5-4. Changing Drive Rolls And Wire Inlet Guide

Tools Needed:
5/64 in
7/16 in

5-5. Aligning Drive Rolls And Wire Guide

Tools Needed:
OM-154 501 Page 16
3
2
1
4
Correct
5
4
3
2
2
1
5
Incorrect
6
Turn Off unit and disconnect input
power.
1 Fuse F1 (See Parts List For
Rating)
F1 protects the 115 volts ac winding
of transformer T1. If F1 opens, all
weld output stops and pilot light PL1
goes out.
2 Fuse F2 (See Parts List For
Rating)
F2 protects the 24 volts ac winding
of transformer T1. If F2 opens, all
weld output stops.
Ref. ST-800 928-B
1 Securing Screw
2 Inlet Wire Guide
Loosen screw. Slide tip as close to
drive rolls as possible without
touching. Tighten screw.
3 Anti-Wear Guide
Install guide as shown.
4 Drive Roll
Install correct drive roll for wire size
and type.
5 Drive Roll Securing Nut
Turn nut one click to secure drive
roll.
ST-150 227-C
View is from top of drive rolls look-
ing down with pressure assembly
open.
1 Drive Roll Securing Nut
2 Drive Roll
3 Wire Guide
4 Welding Wire
5 Drive Gear
Insert screwdriver, and turn screw
in or out until drive roll groove lines
up with wire guide.
Ref. ST-801 412-A