Lincoln Electric SVM145-B service manual Welder Controls Items 9 through

B-6 B-6

OPERATION

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5.OIL PRESSURE GAUGE AND LIGHT (K1585-2 Std., K1585-1 Opt.): The gauge displays the engine oil pressure when the engine is running. The yellow oil pressure light remains off with proper oil pressure. If the light turns on, the engine pro- tection system will stop the engine. Check for prop- er oil level and add oil if necessary. Check for loose or disconnected leads at the oil pressure sender located on the engine. The light will go on and stay on when the RUN/STOP switch is switched to the “RUN” position with engine not running.

6.ENGINE ALTERNATOR AMMETER AND LIGHT (K1585-2 Std., K1585-1 Opt.): The yellow engine alternator light is off when battery charging system is functioning normally. If the light turns on, the engine protection system will shut down the engine. Check the engine cooling blower belt. Also, the alternator or the voltage regulator may not be oper- ating correctly. The light may also come on due to a faulty flashing circuit. The light will remain on when the engine has been shut down due to a fault in the alternator, regulator, or the cooling blower belt.

7.IDLER SWITCH: The switch has two positions as follows:

A)In the “HIGH” position, the engine runs at the high idle speed controlled by the governor.

B)In the “AUTO” position, the idler operates as fol- lows:

a.When switched from “HIGH” to “AUTO” or after starting the engine, the engine will operate at full speed for approximately 12 seconds and then go to low idle speed.

b.When the electrode touches the work or power is drawn for lights or tools (approxi- mately 100 watts minimum) the engine accelerates and operates at full speed.

c.When welding ceases or the AC power load is turned off, a fixed time delay of approxi- mately 12 seconds starts.

d.If the welding or AC power load is not restarted before the end of the time delay, the idler reduces the engine speed to low idle speed.

e.The engine will automatically return to high idle speed when the welding load or AC power load is reapplied.

IDLER OPERATIONAL EXCEPTIONS

When the WELDING TERMINALS switch is in the

“WELDING TERMINALS REMOTELY CONTROLLED” position the idler will operate as follows:

a. When the triggering device (Amptrol, Arc Start Switch, etc.) is pressed, the engine will acceler- ate and operate at full speed provided a welding load is applied within approximately 12 seconds.

b. If the triggering device remains pressed but no welding load is applied within approximately 12 seconds, the engine will return to low idle speed.

c. If the triggering device is released or welding ceases, the engine will return to low idle speed after approximately 12 seconds.

8.HOUR METER: The hour meter displays the total time that the engine has been running. This meter is a useful indicator for scheduling preventative maintenance.

WELDER CONTROLS (Items 9 through 14)

9.OUTPUT RANGE SELECTOR SWITCH & OUT- PUT CONTROL: These two controls allow you to select between various welding output slopes and adjust the desired welding output. Refer to Table B.1 for a description of how these two controls work.

TABLE B.1 OUTPUT RANGE SWITCH

AND OUTPUT CONTROL FUNCTIONS

	OUTPUT	OUTPUT
	RANGE	CONTROL 2
	SELECTOR
	SWITCH 1
Sloped Output for	5 Range Settings	Provides a fine
Pipe Welding	60, 90, 150, 230,	adjustment of
	300 (Max. current	welding current
	on each adjustment	from Min (1) to
	of setting	Max (10) within
		each range
Constant Current	1 Range setting
Fabrication and General	30-375 Amps
Purpose Welding (This
setting also used for TIG.)
Constant Voltage Output	1 Range setting	Provides Fine
for MIG Wire or CORED	12 to 40 Volts	Voltage
WIRE Welding		Adjustment

1If the SELECTOR switch is positioned between settings the previ- ous setting is maintained until the switch is properly positioned on a setting.

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2CONTROL also controls O.C.V. while in the 5 sloped output ranges.

COMMANDER 300