Section 6 − Maintenance & Troubleshooting; Routine Maintenance; Fuse F1; Short Circuit Shutdown - Miller Electric Subarc DC 650 Owner's Manual

SECTION 6 − MAINTENANCE & TROUBLESHOOTING

6-1. Routine Maintenance

n = Check
* To be done by Factory Authorized Service Agent
Every
3
Months
l Unreadable Labels
Every
6
OR
Months
~ Inside Unit (monthly dur-
ing heavy service)

6-2. Fuse F1

Tools Needed:
3/8 in.

6-3. Short Circuit Shutdown

When contact tip is shorted and sticks to workpiece, the unit output falls to a safe operating level. To resume operation,
release gun trigger, turn Off unit, and remove contact tip from workpiece. Check contact tip and replace if damaged.
Turn On unit to continue operation.
!
Disconnect and lockout/tagout input power before per-
forming maintenance or troubleshooting procedures.
Z = Change ~ = Clean
n l Weld Cables
l = Replace
~ Weld Terminals
1
!
Disconnect and lockout/tag-
out input power before
checking or changing fuse.
1 Fuse F1 (See Parts List For
Rating)
Fuse F1 protects control transform-
er from overload. If F1 opens, weld
output and fan motor stops. Re-
place F1.
Close and secure access door.
Ref. ST-800 101-C
OM-236 684 Page 33