Miller Electric Spectrum 1250R - Manual (Page 27)

OM-217 Page 23
5-3. Overload Protection: Trouble Lights & Checking Shield Cup Shutdown System
If certain problems occur, the
Ready light goes off, a trouble light
comes on, and output stops.
1 Gas/Air Or Shield Cup Light
Lights if low gas/air pressure oc-
curs, if shield cup is loose, or if o-
ring is defective.
Turn power Off, and check shield
cup connection (see torch Owner’s
Manual). Check for proper gas/air
pressure (see Section 4-1).
Check shield cup shutdown system
once a week as shown.
2 Torch-To-Tip Short Light
Lights if a short exists between tip
and electrode. Check tip and elec-
trode (see torch Owner’s Manual).
3 Temperature Light
Lights if power source overheats
(see Section 3-2).
4 Torch Shield Cup
Turn Power On and loosen shield
cup. If shutdown system works
properly, Ready light goes off and
Gas/Air Or Shield Cup light comes
on. If not, turn power Off and check
for proper gas/air pressure (see
Section 4-1), blocked or leaking
hose, or loose shield cup (see torch
Owner’s Manual).
If system works properly, retighten
cup and turn Off power.
Ref. ST-800 713
1
2
3
Checking Torch Shield Cup Shutdown System
4