Owner`s manual

. A complete Parts List is available at www.MillerWelds.com
OM-2248 Page 15
6-2. Overload Protection: Trouble Light And Checking Shield Cup Shutdown System
1 Power Light
Light is steady if input power is
okay. Light flashes if input power is
less than 92 volts AC or greater
than 136 volts AC. Light stops
flashing 15 seconds after condition
is corrected or when torch trigger is
pressed.
If certain problems occur, the
trouble light comes on, and output
stops.
2 Cup Light
Lights if shield cup is loose/off.
Check shield cup shutdown system
as follows:
Turn power On and loosen shield
cup. If shutdown system works
properly, Cup light comes on. If
not, turn power Off and have a
factory authorized service agent
check unit.
If system works properly,
retighten cup. Power must be
reset whenever the cup
shutdown is activated.
Check shield cup shutdown
system once a week.
A flashing Cup light indicates that
the torch consumables are stuck
or worn and should be inspected
and/or replaced (see
Section 6-4).
3 Temp Light
Lights if power source overheats or
when ambient temperature is below
−40° C (−40° F). If unit overheats,
allow fan to cool unit for 15 minutes
(see Sections 4-3).
4 Power/Temp Lights
When both lights flash, the com-
pressor current limit was exceeded
either above or below its operating
range. The lights flash for 15 sec-
onds before the torch can be retrig-
gered. If this condition continues
during unit operation, have a facto-
ry authorized service agent check
unit.
5 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 Section
6-4 and Parts List).
If system works properly, retighten
cup and reset power.
Ref. 245 701-A / Ref. 801 300-A
Checking Torch Shield Cup Shutdown System
. Power source Power switch must be reset whenever cup shutdown
system is activated. Always turn Off power source when changing or
checking consumables.
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