Miller Electric 812 - Manual (Page 32)

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A complete Parts List is available at www.MillerWelds.com
OM-278 Page 24
SECTION 6 − MAINTENANCE & TROUBLESHOOTING
6-1. Routine Maintenance
! Disconnect power before maintaining.
3 Months
Replace
unreadable
labels.
Clean and
tighten weld
terminals.
Repair or
replace
cracked weld
cable.
6 Months
Blow out or vacuum inside.
During heavy service, clean monthly.
OR
6-2. Fuse F1
Ref. 800 101-C
! 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.
1
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.