Lincoln Electric SVM194-A service manual A3.3, Control Panel High Idle RPM OCV Adjustment

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	A3.3				INSTALLATION		A3.3
	GENERAL DESCRIPTION					Engine Idler - The Classic® 300D is equipped with an
						electronic automatic engine idler. It automatically
®		300D KUBOTA is a heavy duty, engine				increases and decreases engine speed when starting
	The CLASSIC					and stopping welding or using auxiliary power. A
	driven, DC arc welding power source, capable of pro-
	viding constant current output for stick welding or DC					built-in time delay permits changing electrodes before
	TIG welding. This welder is wound with all copper coils,					the engine slows to its low idle speed. The “Idler” con-
	rated at 300 amps/32 Volts, and provides other					trol switch on the panel locks the idler in high idle posi-
	Classic® features such as improved door latches and					tion when desired.
	stainless hinges. With the		addition of the optional			Auxiliary Power - 3.0 kVA of nominal 115/230V, 60Hz,
	K623-1 Wire Feed Module		™	, the CLASSIC® 300D
						AC. Output voltage is maintained within ± 10% at all
	KUBOTA will provide constant voltage output for run-					loads up to rated capacity. (See Optional Features
	ning the LN-7, LN-23P, or LN-25 wire feeders. (The					in Section C for Power Plug Kit.)
	Wire Feed Module is factory installed on the K1643-6).					Welder Enclosure - The complete welder is rubber
	The optional K924-5 Remote Control Kit, provides a
	remote control rheostat for remote fine current and					mounted on a rugged steel “C” channel base.
	open circuit voltage adjustment. See Section C for					The output terminals are placed at the side of the
	description.					machines so that they are protected by the door. The
	The CLASSIC® 300D KUBOTA has an Electronic					output terminals are labeled (+) and (-).
	Engine Protection System. In the event of sudden low					Cranking System - A 12 volt electric starter is stan-
	oil pressure or high coolant temperature, the engine					dard.
	immediately shuts down. The CLASSIC® 300D KUB-
	OTA has a current range of 40-350 DC amps with out-					Air Cleaner - Heavy duty two stage dry type.
	put ratings as follows:					Muffler - A muffler and stainless steel exhaust outlet
	RATED OUTPUT			DUTY CYCLE		elbow are standard.
	250A @	30V			100%	Engine Hour Meter - A meter to record hours of oper-
	300A @ 32V				60%	ation.
						Engine Protection - The system shuts the engine
	These units are also capable of providing 3 kVA of
						down in the event of sudden low oil pressure or high
	115/230 volts of 60 cycle AC auxiliary power.					coolant temperature. A warning light on the control
	The CLASSIC® 300D KUBOTA uses the Kubota					panel will indicate such a fault. To reset the engine for
						restarting, turn the ignition switch off then on.
	V2203M industrial water-cooled diesel engine.					Refer to Troubleshooting section for all warning light
	DESIGN FEATURES					fault codes.	A Potentiometer
	Control Panel					High Idle RPM (OCV) Adjustment -
						is mounted on the Control Panel that allows the opera-
	Both the engine and the welder controls are located on					tor to adjust the high idle engine speed between 1650
	one recessed panel at the exciter end of the machine.					and 1800 RPMʼS. This is to allow further adjustment of
	The welder controls consist of a five step “Current					the OCV. Total OCV adjustment range is about 15
	Range Selector” switch and a “Fine Current					volts.
	Adjustment” rheostat. The welder is equipped with a					Oil Drain Valve - A ball valve, hose and clamp are
	“Start” button, an “Ignition” switch, an “Idler” control
	switch, and a “Glow Plug” button for easier cold weath-					standard.
	er starting.					Remote Control - The Remote/Local switch and
	The control panel also contains an engine temperature					Receptacle are standard.
	gauge, a battery charging ammeter, an oil pressure					GFCI Receptacle - One UL approved 115V ground
	gauge, two three prong grounding type receptacles
	and circuit breakers for auxiliary power.					fault circuit interupter duplex type receptacle is stan-
	All Copper Windings - For long life and dependable					dard on codes 11243 and above. See MAINTENANCE
						section for detailed information on testing and resetting
	operation.					the GFCI receptacle.

CLASSIC® 300D & 300G