Lincoln Electric 200 service manual Duty Cycle, Control of Welding Current, BB-4

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

BB-4		OPERATION							BB-4
ENGINE BREAK-IN				WELDER OPERATION
Lincoln Electric selects high quality, heavy-duty indus-								WARNING
trial engines	for the portable welding machines		we				ELECTRIC SHOCK can kill.
offer. While	it is normal to see a small	amount	of
							•	Do not touch electrically live parts or
crankcase oil consumption during initial operation,							•	electrode with skin or wet clothing.
excessive oil use, wetstacking (oil or tar like substance								Insulate yourself from work and ground.
at the exhaust port), or excessive smoke is not normal.							FUMES & GASES can be dangerous.
Larger machines with a capacity of 350 amperes and							• Keep your head out of the fumes.
							• Use ventilation or exhaust to remove
higher, which are operated at low or no-load conditions								fumes from breathing zone.
for extended periods of time are especially susceptible
to the conditions described above. To accomplish suc-							WELDING SPARKS can cause fire or
cessful engine break-in, most diesel-powered equip-
ment needs only to be run at a reasonably heavy load							explosion.
within the rating of the welder for some period of time							• Keep flammable material away.
during the engineʼs early life. However, if the welder is							ARC RAYS can burn.
subjected to extensive light loading, occasional moder-
ate to heavy loading of the engine may sometimes be							• Wear eye, ear, and body protection.
necessary. Caution must be observed in correctly
loading a diesel/generator unit.					DUTY CYCLE
1. Connect the welder output studs to a suitable				The NEMA output rating of the Pipeliner® 200D is 200
resistive load bank. Note that any attempt to short				amperes at 28(1) arc volts on a 60% duty cycle. Duty
the output studs by connecting the welding leads				cycle is based on a ten minute period; thus, the welder
together, direct shorting of the output studs, or				can be loaded at rated output for six minutes out of
connecting the output leads to a length of steel will				every ten minute period.
result in catastrophic damage to the generator and				(1) The “Lincoln Plus” output rating at 60% duty cycle
voids the warranty.						is 200 amperes at 40 Volts.
2. Set the welder controls for an output current and				CONTROL OF WELDING CURRENT
voltage within the welder rating and duty cycle.
or duty cycle for any period of time will result in								CAUTION
Note that any attempt to exceed the welder rating
catastrophic damage to the generator and voids				DO NOT TURN THE “CURRENT RANGE SELEC-
the warranty.
		check the		TOR” WHILE WELDING because the current may
3. Periodically shut off the engine and				arc between the contacts and damage the switch.
crankcase oil level.				-----------------------------------------------------------------------
				The “Current Range Selector” provides five overlap-
				ping current ranges. The “Fine Current Adjustment”
				adjusts the current from minimum to maximum within
				each range. Open circuit voltage is also controlled by
				the “Fine Current Adjustment” permitting control of the
				arc characteristics.

A high open circuit voltage setting provides the soft “buttering” arc with the best resistance to pop-outs pre- ferred for most welding. To get this characteristic, set the “Current Range Selector” to the lowest setting that still provides the current you need and set the “Fine Current Adjustment” near maximum. For example: to obtain 175 amps and a soft arc, set the “Current Range Selector” to the 190-120 position and then adjust the “Fine Current Adjustment” for 175 amps.

PIPELINER® 200D PERKINS