Lincoln Electric IM581 manual AIR Compressor Controls

B-4 OPERATION B-4

How to Set the Controls

Assume you want a normal soft arc and about 135 amps, using a 5/32” (4.0 mm) electrode:

1.Set the “Job Selector” at the center of the black range.

2.Set the “Current Control” to read 135 amps on the black dial.

3.Start to weld.

4.If you want a little more current, turn the “Job Selector” up (counterclockwise) to increase cur- rent. If you want a little less current, turn the “Job Selector” down (clockwise) to decrease current.

5.If dialing the desired current with the “Job Selector” moves the setting outside the black range causing undesirable arc characteristics, turn the “Job Selector” back to the center of the black range. Then turn the “Current Control” up or down a little as needed. Readjust the “Job Selector” for the exact characteristics and current desired.

REMOTE CONTROL

A receptacle and “Local/Remote” control switch on the lower front control panel and a remote control box with 25 ft. (7.6 m) of 3-conductor cord for adjusting the OCV at the welding site. Putting the switch in the “REMOTE” position allows fine current control at the remote con- trol box while placing the switch in the “LOCAL” position allows fine current control at the “Job Selector” on the machine. When using the optional field installed CV adapter (K385-1) the “Local/Remote” switch is only active in the “VV” mode.

AUXILIARY POWER CONTROLS

115 VAC Receptacle

One 15 amp, 115 VAC duplex receptacle provides 115 VAC for auxiliary power. A total of 26 amps can be drawn from this receptacle.

230 VAC Receptacle

One 15 amp, 230 VAC duplex receptacle provides 230 VAC for auxiliary power. A total of 13 amps can be drawn from this receptacle.

15 AMP Circuit Breakers

These circuit breakers provide separate overload cur- rent protection for each half of the 115 V duplex recep- tacle. The circuit breakers provide overload current pro- tection in both current carrying wires of the 230 V duplex receptacle.

Ground Stud

Provides a connection point for connecting the machine to earth ground. For the safest grounding pro- cedure refer to “Machine Grounding” in the INSTALLA- TION section of this manual.

AIR COMPRESSOR CONTROLS

COMPRESSOR ON/OFF SWITCH

Placing the “ON/OFF” switch in the “ON” position allows the “pressure switch” (factory preset) to control the air compressor through an electric clutch. When the system pressure falls below 90 psi, the “pressure switch” engages the clutch and compressor. When the system pressure goes above 130 psi, the “pressure switch” disengages the clutch and compressor.

The “ON/OFF” switch needs to be in the “ON” position when using compressed air. When placed in the “OFF” position this switch does not allow the compressor clutch to engage regardless of the tank pressure.

The “ON/OFF” switch should be in the “OFF” position while starting the engine. This will minimize the load on the starter motor.

COMPRESSOR OPERATING LIGHT

This light is on when the compressor “ON/OFF” switch is in the “ON” position.

COMPRESSOR AIR PRESSURE GAUGE

This gauge displays the air pressure in the air receiver tanks.

COMPRESSOR OIL PRESSURE GAUGE

This gauge displays the compressor oil pressure. Oil is under pressure only when the compressor clutch is engaged.

SAE400 WELD’N AIR