Lincoln Electric SAE-300 manual MIG Welding, Idler Operation

b-3 OPERATION b-3

GAS-ShIELDED FLux-CORED WELDING

(WITh A K623-1 WIRE FEED MODuLE INSTALLED) Start by setting the Wire (CV) / Stick (CC) toggle switch to the Wire (CV) position. Then set the left-side Coarse Current control dial to 150. Now move the Voltage Adjustment dial to the desired voltage. Move the Coarse Current control to the left for a softer arc and to the right for a crisper arc.

MIG WELDING

(WITh A K623-1 WIRE FEED MODuLE INSTALLED) Start by setting the Wire (CV) / Stick (CC) toggle switch to the Wire (CV) position. Then set the left-side Coarse Current control dial to 150. Now move the Voltage Adjustment dial to the desired voltage. Move the Coarse Current control to the left for a softer arc and to the right for a crisper arc.

CARbON ARC GOuGING

Set both the Coarse Current and Fine Current O.C.V con- trols to maximum for carbon arc gouging in the CC (constant current) mode. If a K623-1 Wire Feed Module is installed and the CV (constant voltage) mode is desired, set the Wire (CV) / Stick (CC) toggle switch to the Wire (CV) position. Then set the left-side Coarse Current control to maximum output and the Voltage Adjustment dial to maximum output.

IDLER OPERATION

Start the engine with the “Idler” switch in the “High” position. Allow it to run at high idle speed for several minutes to warm the engine. See Specifications for operating speeds.

The idler is controlled by the “Idler” toggle switch on the welder control panel. The switch has two posi- tions as follows:

1.In the “High” position, the idler solenoid deactivates, and the engine goes to high idle speed. The speed is controlled by the governor.

2. In the “Auto”	/	position, the idler oper-
ates as follows:

a.When welding or drawing power for lights or tools (approximately 100 watts minimum) from the receptacles, the idler solenoid deactivates and the engine operates at high idle speed.

b.When welding ceases or the power load is turned off, a preset time delay of about 15 seconds starts. This time delay cannot be adjusted.

c.If the welding or power load is not re-started before the end of the time delay, the idler sole- noid activates and reduces the engine to low idle speed.

AuxILIARY POWER

If GFCI is tripped, See the MAINTENANCE section for detailed information on testing and resetting the GFCI.

The AC auxiliary power, supplied as a standard, has a rating of 3.0 KVA of 115/230 VAC (60 hertz).

With the 3.0 KVA, 115/230 VAC auxiliary power, one 120V duplex protected by GFCI and one 230V duplex, grounding type receptacle with 2 pole, 15 amp circuit breaker.

The rating of 3.0 KVA permits a maximum continuous current of 13 amps to be drawn from the 230 volt duplex receptacle. 20 amps can be drawn from the 120 volt duplex receptacle. The total combined load of all receptacles is not to exceed 3.0 KVA.

An optional power plug kit is available. When this kit is specified, the customer is supplied with a plug for each receptacle.

SAE-300® WITh PERKINS 104D-22 DIESEL ENGINE

TYPICAL FuEL CONSuMPTION DATA

Low Idle (1375 RPM)-No Load @ 45 Volts	0.28 gal/hr	( 1.06	ltrs/hr)
High Idle (1800 RPM)-No Load @ 96.6 Volts	0.42 gal/hr	( 1.59	ltrs/hr)
3000 Watts	0.59 gal/hr	( 2.23	ltrs/hr)
250 Amps @ 30 Volts	1.03 gal/hr	( 3.90 ltrs/hr)
300 Amps @ 32 Volts	1.37 gal/hr	( 5.19 ltrs/hr)

SAE-300®