Filter
Top Products
. A complete Parts List is available at www.MillerWelds.com
OM-225 216 Page 22
6-6. Overload Protection: Trouble Lights & Checking Shield Cup Shutdown System
1 Power Light
Light is steady if input power is
okay. Light flashes for the following
conditions:
a If input power is 120 volts
ac, but power supply is
less than 92 volts ac.
b If input power is 240 volts
ac, but power supply is
greater than 276 volts ac.
If certain problems occur a trouble
light comes on, and output stops.
2 Pressure Light
Lights if gas/air pressure into the
system is below 90 PSI (620 kPa).
Turn power Off, and check for
proper gas/air pressure.
A flashing Pressure light indicates
that gas/air system may be set too
low, faulty, leaking or has a flow re-
striction.
3 Cup Light
Lights if shield cup is loose/off.
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 and reset power.
Turn power Off, and check shield
cup connection (see torch Owner’s
Manual). Power must be reset
whenever the cup shutdown is
activated.
A flashing Cup light indicates that
the torch consumables are stuck or
worn and should be inspected and/
or replaced (see Section 6-7).
Check shield cup shutdown system
once a week.
4 Temperature Light
Lights if power source overheats or
when ambient temperature is below
−35° C (−31° F) (see Section 4-3).
Ref. 225 175-B / Ref. 802 877
Checking Torch Shield Cup Shutdown System
Power must be reset whenever the cup shutdown system is activated.
Always turn Off power when changing or checking consumables.
Do NOT overtighten torch shield cup. Gently finger tighten cup onto
torch.
2
3
4
1
Shield
Cup