Lincoln Series 1000, Series 1200 guide

Time/Temp Display	12.6 VAC Power Supply	Measure the transformer primary inoperative for a
		nominal 120 VAC input. Measure the secondary
		voltage output which will be 12.5 to 15 VAC
		normally. Recheck secondary output at rear of
		Time/Temp Display. Terminals 1 to 3 should read
		12.5 to 15 VAC. Terminals 1 to 2 and 2 to 3 should
		be exactly 1/2 of the reading across 1 to 3. If you
		do not get the above secondary readings, replace
		the transformer. If 120 VAC primary voltage is not
		available, refer to the schematic and trace circuit
		for incoming power failure. There is a 4 amp fuse in
		each red secondary lead. These may be jumpered
		(for test only) to determine if they are defective or
		intermittent.
NOTE:	(Dual Belt Ovens)	Dual belt ovens utilize a double pole double throw
		switch, which allows either of the optical encoders
		to be read from a single Time/Temp. Display.
		Check switch and replace as needed.
Temp Display out or	NOTE: Time/Temp displays	Place your pyrometer thermocouple into the center
inaccurate	use two types of temperature	between fingers T2 and T3 in the oven. Disconnect
	sensor, Thermistor Probe – 2	the yellow tipped thermistor leads from the
	yellow wires Thermocouple	time/temp. terminals 9 and 10. Measure the
	Probe 1 red wire and 1 white	resistance of the thermistor probe. See chart on
	wire	page 72 for proper resistance readings.
	Thermistor Probe	Inspect the thermistor bulb for its proper location in
		its spring holder. Check for short in leads where
		they enter the sensor bulb. Also check each
		thermistor lead for short to ground.
	Thermocouple Probe	Place your pyrometer thermocouple into the center
		between fingers T2 and T3 in the oven. Connect
		temperature meter to thermocouple at terminals 9
		& 10 on back of the time/temp display (Be sure to
		maintain proper polarity on thermocouple
		connections.) Compare actual oven temperature
		with the reading at the time/temp display. If the
		temperature readings match, recalibrate or replace
		time/temp display. If the readings do not match,
		replace thermocouple probe.
	Erratic time/temp display	If strange or unusual behavior is experienced such
		as a rolling of numbers, lock up at a given number,
		first check for a display circuit lock up. This can be
		caused by a voltage spike or surge. To eliminate
		this condition remove power from the time/temp.
		display by shutting off the main fan switch, or if
		display stays on, (older models) circuit breaker
		interruption may be required. This should eliminate
		the problem. If the problem continues, jumper the
		two fuses in the red wires leading from the 12.6
		VAC transformer to the display. If this does not
		solve the problem, it may be coming in through the
		commercial power lines. Suggest that customer
		contact his power company for evaluation.
	Temp Display inaccurate	Perform the power supply check, the thermistor
	erratic, or inoperative	probe check, and then perform the time/temp
		simulator test. Refer to page 72 for instructions.
		Remember, when using the time/temp simulator,
		remove all the leads from the back of the display
		except the 3 power leads. After completion of this
		test and if reinstalling back into the oven, the dip
		switches must be reset for oven operation.

44	Impinger I -–1000 Series Service Manual - International

Series 1000, Series 1200 specifications

The Lincoln Series 1200 and Series 1000 are two distinguished models in the range of Lincoln Electric welding machines, epitomizing quality, versatility, and advanced technology for both industrial and residential welding applications.

The Lincoln Series 1200 is renowned for its robust build and high-performance capabilities. One of its main features is the ability to perform both MIG (Metal Inert Gas) and stick welding processes, making it a versatile option for various welding requirements. It incorporates an intuitive control panel that allows for easy settings adjustments, ensuring operators can swiftly adapt to different materials and thicknesses. The Series 1200 is equipped with a powerful drive system to provide smooth wire feeding, minimizing downtime due to jams or misfeeds. Additionally, its high-duty cycle support allows continuous operation, making it an ideal choice for professional welders and fabrication shops.

In terms of technology, the Series 1200 employs advanced inverter technology that enhances energy efficiency while reducing the machine’s overall weight. This results in portability without compromising power, making it a practical choice for on-site tasks. Moreover, the machine features an automatic voltage adjustment that optimizes performance based on the input voltage, ensuring reliable operation even under fluctuating power conditions.

On the other hand, the Lincoln Series 1000 is specifically designed for entry-level users and small projects. It shines with its user-friendly interface, which simplifies the welding process for beginners. This model typically includes pre-set parameters and an easy-to-read display, enabling novice operators to achieve excellent welds with minimal experience. Despite its entry-level focus, the Series 1000 does not skimp on performance, offering dependable results across various materials.

Both the Series 1200 and Series 1000 incorporate safety features, including thermal overload protection, ensuring that users can operate the machines with peace of mind. Their durable construction allows for prolonged use in tough work environments without sacrificing reliability.

In conclusion, the Lincoln Series 1200 and Series 1000 cater to a wide range of welding needs, from professional applications to home projects. Their respective features and technologies present options that can fit various skill levels while delivering exceptional welding performance and longevity. Whether you are a seasoned professional or a hobbyist, Lincoln Electric provides reliable solutions to meet your welding requirements.