Miller Electric ICE-27C, 375 manual Checking Torch Shield Cup Shutdown System

6-2. Overload Protection: Trouble Lights & Checking Shield Cup Shutdown System

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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.

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1 Power Light

Light is steady if input power is okay. Light flashes for the following conditions:

aIf input power is 115 volts ac, but power supply is less than 92 volts ac or greater than 138 volts ac.

bIf input power is 230 volts ac, but power supply is less than 194 volts ac or 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 is below 40 PSI (276 kPa).

Turn power Off, and check for proper gas/air pressure (see Section 5-1).

A flashing Pressure light indicates that gas/air system may be set too low, faulty, leaking or has a flow re- striction (see Section 6-5).

3 Cup Light

Lights if shield cup is loose.

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 6-4).

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).

5 Torch Shield Cup

Turn Power On and loosen shield cup. If shutdown system works properly, Ready light goes off and 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 reset power.

Ref. 200 808 / Ref. 802 877

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