Lincoln Electric IM467-B manual Operation

B-11 B-11

OPERATION

1.POWER ON/OFF — A momentary start/stop pushbutton, which controls the input contactor. If the input power supply goes off or if the thermo- stat in the welder trips, the start pushbutton must be pressed to restart the welder.

2.PILOT LIGHT — Indicates when the input contac- tor is energized (power is on).

CAUTION

Do not switch polarity under load.

3.POLARITY SWITCH — Selects DC-/AC/DC+

4.FUSE F1 — 0.5 amp control circuit fuse protects the control transformer from overloads. Input overvoltage protection circuitry will blow this fuse to protect electronic components if the input volt- age to the welder is too high (more than 40% over rated voltage). If this fuse blows, the digital meters will not light and the input contactor will not latch when the Power On/Off Start pushbutton is pressed and released.

5.FUSE F2 — 1.5 amp gas, water, and high fre- quency fuse protects the circuitry that drives the gas and water valves and the high frequency sup- ply transformer. If this fuse blows, the valves and high frequency will not work. However, the LEDs for Gas and Water and High Frequency will still light.

6.REMOTE RECEPTACLE — A six-pin circular con- nector for an Arc Start switch or an Amptrol remote current control.

7.115 VOLT RECEPTACLE AND CIRCUIT BREAK- ER — A duplex 15 amp grounded NEMA 5-15R receptacle and 15 amp circuit breaker. Fifteen amps of 115 volt AC power is available continu- ously whenever the power is on. The circuit breaker button will pop out if it trips. Reset by pushing it in after the circuit breaker cools and the overload has been removed.

8.HIGH FREQUENCY INTENSITY CONTROL AND SPARK GAP — This control changes the high fre- quency intensity. Use the lowest intensity which still gives good arc starting to minimize Radio Frequency Interference (RFI). The spark gap is set at the factory to the normal setting marked on the cover plate. Instructions for larger or smaller gap settings are also on the cover plate.

9.GAS AND OPTIONAL WATER VALVES — Solenoid valves that open at the beginning of the Preflow time and close at the end of the Afterflow time.

The gas valve inlet and outlet are standard 5/18-18 right-hand female fittings. The water valve inlet and outlet are standard 5/8-18 left-hand female fit- tings. The fittings conform to CGA (Compressed Gas Association) standards. Use a water line strainer to prevent particles from jamming the water valve.

SQUARE WAVE TIG 355