Tach generator and DC Motor

With the power to the DC motor control board

 

Control Board

turned off, remove the leads from terminals T1 and

 

 

T2. Place the test leads of a digital meter on the

 

 

tach leads, turn power on, and the meter reading

 

 

should be approximately 30 to 35 VDC. This

 

 

reading should be steady within ± 0.2 to 0.3 VDC. If

 

 

this reading is not within ± 0.5 VDC, place the test

 

 

meter probes on terminals A+ and A-. The meter

 

 

reading should be approximately 150 to 160 VDC

 

 

and steady within approximately 2 VDC. If the tach.

 

 

voltage is unsteady, and the board output is steady,

 

 

check the coupling for loose set screws or any type

 

 

of damage. If the coupling checks good, the tach. is

 

 

usually bad. If the board voltage output is unsteady

 

 

beyond limits, then the board is probably bad.

 

 

Always check the speed pot. be sure it is okay

 

 

before changing a board or tach. This test is not

 

 

always 100% accurate as this test is not performed

 

 

at operating speeds. However, this test is the best

 

 

method currently available. Readjustment should

 

 

always be attempted at least once before

 

 

replacement. See procedure for board adjustment

 

 

on page 65.

 

DC Gear motor

If the DC control board is steady then the problem

 

 

may be the motor or gearbox. Check the brushes in

 

 

the motor for excessive arching and/or unusual

 

 

wear. Check the motor and gearbox from

 

 

instruction located on page 34 under "possible

Conveyor will not run

 

cause" listing "Conveyor gear motor".

Voltage Supply

Check incoming voltage supply at Line 1 to neutral.

S/N Q14974 & up1000

 

There should be a voltage reading of 120 VAC.

Series S/N Q14791 &

 

 

up 1200 Series

 

 

 

Fan Switch

See procedure for checking on page 26.

 

Conveyor Switch

Check for 120 VAC to conveyor Switch. If no

 

 

voltage is present, trace wiring back to the fan

 

 

switch. WITH POWER OFF: Check continuity

 

 

between switch terminals.

 

Conveyor Fuse (3A)

Check, replace if necessary.

 

Fuseholder

Check, replace if necessary.

 

Conveyor Control (Stepper)

Check for 120 VAC supply to primary of

 

Transformer

transformer, if voltage is not present, trace wiring

 

 

back to the fuse holder. If voltage is present, check

 

 

for out-put voltage from the transformer secondary.

 

 

NOTE: this control transformer outputs (2)

 

 

secondary voltages Red Leads 29 VAC Brown

 

 

Leads 10 VAC. If BOTH secondary voltages are

 

 

not present, replace the transformer.

Impinger I -–1000 Series Service Manual - International

35

Page 34 Page 36
Page 35
Image 35
Lincoln Series 1200, Series 1000 service manual
Page 34 Page 36

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.
Top Page Image Contents