Controls and Settings

B-3	OPERATION	B-3

The Front Control Panel contains the knobs and switches necessary for adjusting the operation of the Precision TIG 375, with function indicator lights and an electronic display for volts and amps. The components are described below:

FIGURE B.1 - CONTROL PANEL

1.POWER SWITCH - Input line switch turns input power ON or OFF, as indicated by the on or off sta- tus of the front panel displays.

2.POLARITY SWITCH – The 3-position rotary power switch has detente positions for DC-, AC and DC+ selections for the Electrode output welding polarity.

3.MODE SWITCH – The mode switch allows vertical- ly positioned selection of the two machine welding modes. The selected mode is indicated by a lit col- ored panel light which permits viewing the machine setting from a distance:

3.a STICK mode (Top position) –Red panel light

WARNING

ELECTRIC SHOCK can kill.

•When the Power Source is ON in STICK mode the Electrode circuits of both the Stick and TIG torch cables are electrically HOT to Work.

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1. POWER SWITCH

2. POLARITY SWITCH

3. MODE SWITCH

4. AC BALANCE CONTROL

5. LOCAL/REMOTE CURRENT CONTROL SWITCH

6. MAXIMUM OUTPUT CONTROL

7. MINIMUM OUTPUT CONTROL AND DISPLAY SWITCH

8. DIGITAL METER AND DISPLAY SWITCH

9. POSTFLOW TIME

10. THERMAL SHUTDOWN LIGHT

11. REMOTE RECEPTACLE

12. TRIGGER SWITCH

13. PULSE MODE SWITCH

14. PULSE FREQUENCY CONTROL

15. PULSE % ON TIME CONTROL

16. PULSE BACKGROUND CURRENT CONTROL

17. DOWNSLOPE TIME

18. HIGH FREQUENCY INTENSITY CONTROL (NOT SHOWN LOCATION ONLY)

•The CC Stick mode may be used for general pur- pose stick welding (SMAW ) within the capacity of the machine. The capacity is too limited for arc air carbon (AAC) gouging.

•In this mode; the output terminals are activated electrically HOT, gas flow is not activated and HOT START and ARC FORCE levels are fixed, or Advanced Panel selectable (See Section B-7 ), with no front panel adjustment.

3.b TIG mode (Bottom position) – No panel light.

•When the Polarity Switch is set to AC, the TIG mode provides continuous high frequency to stabi- lize the arc for AC TIG welding.

Hi-Freq. turns on after preflow time with the arc start switch closure, and turns off when the arc goes out* after the arc start switch opens.

*Arc voltage and current are sensed to determine if the arc is established or out.

PRECISION TIG 375

IM909 specifications

Lincoln Electric IM909 is an innovative industrial multi-process inverter welder designed to provide exceptional flexibility, performance, and user-friendly operation for a wide range of welding applications. This versatile machine is suitable for both novice and experienced welders, making it an ideal choice for workshops, fabrication shops, and maintenance operations.

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One of the standout features of the IM909 is its advanced inverter technology. The inverter design not only makes the welder compact and lightweight but also enhances energy efficiency and improves arc stability. This results in better control over the welding process, leading to higher quality welds with reduced spatter. Additionally, the IM909 boasts a wide output range, allowing it to handle various welding thicknesses effectively.

Another significant characteristic of the IM909 is its user-friendly interface. The machine comes equipped with a digital display that provides clear readouts of current settings, making it easy for users to monitor and adjust parameters on the fly. Moreover, the intuitive controls simplify the setup process, streamlining operations for users of all experience levels.

Safety is always a top priority in welding operations, and the IM909 integrates several protective features, including over-temperature protection and circuit breaker safeguards. These elements ensure the durability of the machine and protect both the welder and the equipment from potential hazards.

In conclusion, the Lincoln Electric IM909 multi-process inverter welder stands out as a reliable, efficient, and adaptable welding solution. Its combination of advanced inverter technology, multi-process capabilities, user-friendly operation, and safety features makes it an excellent investment for any welding professional looking for quality and versatility in their equipment. Whether performing intricate fabrication work or tackling heavy-duty welding tasks, the IM909 delivers exceptional performance across a wide range of applications.

Lincoln Electric IM909 manual Controls and Settings, Figure B.1 Control Panel

Models: IM909

OPERATION