Speed Adjustment

This is a 0 to 5 K ohm, 10 turn potentiometer. With

 

Potentiometer

power off, remove the red, black and white pot

 

 

leads from the motor control board at terminals

 

 

P1,P2, and P3. With a digital multimeter, check the

 

 

ohm reading across the red lead (P3) to the black

 

 

lead (P1). This reading should be 5 K ohms ± 5%

 

 

as the pot is rotated from low to high. Place the

 

 

meter leads on the red lead (P3) and on the white

 

 

lead (P2). Rotating the pot. slowly, from low to high,

 

 

the meter reading should show an even transition

 

 

from 0 to 5 K ohms ± 5%. There should be no dead

 

 

or open spots through out the 10 turns of the pot.

 

 

Check all three leads to ground. There should be

 

 

no continuity to ground. If any of the above checks

 

 

fail, replace the pot.

 

DC Motor Control Board

Check for 120 VAC input to the control board at

 

 

terminals L1 and L2. If not present, check the

 

 

conveyor switch and wiring back to 3 amp fuse and

 

 

then back to power source if necessary. If 120 VAC

 

 

is present at L1 and L2, check the VDC output at

 

 

terminals A+ and A-. If a DC voltage is not present,

 

 

check the 4 amp and the 1 amp fuses on the

 

 

control board. If 120 VAC is present at terminals L1

 

 

and L2, but DC voltage is not present at A+ and A-,

 

 

providing the 1 amp and 4 amp fuses are good,

 

 

replace the board. If DC voltage is present at A+

 

 

and A-, but motor does not run, check gear motor

 

 

as follows.

 

Conveyor Gear Motor

If DC voltage is present at A+ and A- and the motor

 

 

does not run, first check the mini breaker and then

 

 

the conveyor. Refer to the next possible cause.

 

 

Check the leads to the motor for evidence of any

 

 

shorts or opens, and each lead to ground. If the

 

 

motor fails the above tests, replace motor. Remove

 

 

dust cover from the top of the motor and rotate

 

 

motor shaft to determine if there is a locked rotor or

 

 

a locked gear box (use care so encoder disc is not

 

 

damaged).

 

Conveyor

Check for any mechanical miss-alignment or

 

 

improper adjustment. Also check for worn bearings.

 

 

The Installation and Operations Manual shows

 

 

proper conveyor belt adjustment. A conveyor belt

 

 

that is over tightened will cause excessive bearing

 

 

wear and sometimes, irregular speed.

Conveyor speed

Power Supply

Check power supply at the DC control board for the

varying or intermittent

 

120 VAC at board terminals L1 and L2. If voltage is

 

 

not present, check main circuit breakers.

34

Impinger I -–1000 Series Service Manual - International

Page 33 Page 35
Page 34
Image 34
Lincoln Series 1000, Series 1200 service manual
Page 33 Page 35

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.
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