Hobart Welding Products AIRFORCE 250A - Manual (Page 20)

OM-928 Page 16
6-2. Trouble Light And Checking Shield Cup Shutdown System
If certain problems occur, the
trouble light comes on, and output
stops.
1
Trouble Light
a
Lights if shield cup is loose.
Turn power Off, and check
shield cup connection
(see Item 2 below). Power
must be reset whenever
the cup shutdown is
activated.
Check shield cup
shutdown system once a
week.
b Lights if power source
overheats (see Sections
4-3 and 4-5).
c Lights if input power is not
within specification (93 to
137 vac). Power must be
reset whenever the input
voltage shutdown is
activated.
2 Torch Shield Cup
Turn Power On and loosen shield
cup. If shutdown system works
properly, trouble light comes on. If
not, turn power Off and check for
loose shield cup.
Check consumables (see Sections
6-4 and Parts List).
If system works properly, retighten
cup and reset power.
Ref. 196 630 / Ref. 801 300-A
Checking Torch Shield Cup Shutdown System
CUP
TEMP
INPUT VOLTAGE
1
Power source Power switch must be reset whenever cup shutdown
system is activated. Always turn Off power source when changing or
checking consumables.
2