Controls

1.Power Switch (1). Use this selec- tor to turn the welder Off, or On to the correct Voltage. WARNING: It is imperative that you select ONLY the Voltage setting for which you have wired the Power Cable.

. Power Cable (2). You will have

wired this for either 115 or 230 Volts.

3.Amperage Control Knob (3). Use this control to regulate the Am- perage. Turn in the direction indicated by the arrow to increase or decrease

Amperage.

4.Ground Cable (4). Use the clamp on this cable to ground your work- piece.

5.Electrode Cable (5). Use the Electrode on this cable to hold the welding rod, and to weld.

6.Green Pilot Lamp (6). This lamp indicates that the Welder is turned On.

7.Yellow Lamp (7). This lamp lights when the Welder has overheated, and the thermostat has tripped. Notice: If the Yellow Warning Light goes on. Stop welding, turn off and unplug the welder, and wait at least 15 minutes for the unit to cool down. Recheck your electrode selection and Amperage setting to determine if they are cor- rect for the welds being made. When restarting, either use a lower Amperage set- ting, or allow more time between welds to avoid overheating the Welder. Continued overheating can cause damage.

Setting the Correct Amperage

Control the Amperage of your Arc Welder by turning the Amperage Control Knob (3) on the front of the welder, and reading the setting through the CLEAR COVER

(23)on top of the welder, and comparing the position of the Indicator (24) with the infor- mation on the label.

WARNING! If welding at 115 Volts, do not exceed 70 A, or the 30 A breaker switch in your power source will trip.

WARNING! Never use an extension cord for this unit that is not UL rated for the Voltage and Amperage that the welder requires.

Arc Welding Basics

1.In Arc Welding, the electrical arc struck between the electrode and the welding joint generates such a high temperature that it melts both the electrode and the base metal. As this molten metal pool cools, it welds the joint.

.To consistently achieve good weld joints, it is important to have the right equipment, use the proper electrodes, prepare the workpiece properly, and utilize skill which can only be gained through training and practice. While this booklet provides useful and

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Harbor Freight Tools 98870 operating instructions Controls, Setting the Correct Amperage, Arc Welding Basics
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98870 specifications

Harbor Freight Tools consistently brings high-quality, budget-friendly tools to the market, and the model 98870 is no exception. This versatile piece of equipment has become a favorite among DIY enthusiasts and professional tradespeople alike. With its robust construction and intelligent design, the Harbor Freight Tools 98870 stands out as a valuable addition to any toolbox.

One of the main features of the 98870 is its impressive power. Equipped with a reliable electric motor, it provides ample torque and speed, making it suitable for a wide range of tasks, from simple household repairs to more demanding construction work. This capability ensures that users can handle various materials effortlessly, enhancing productivity.

A standout technology incorporated into the 98870 is its variable speed control. This feature allows users to adjust the tool's speed according to the specific requirements of a job. Whether working on delicate components or tackling more robust materials, the ability to control speed ensures precision and greater control over the work being performed.

Another characteristic that makes the Harbor Freight Tools 98870 a top choice is its ergonomic design. The handle is contoured for comfort, reducing user fatigue during extended periods of use. This emphasis on user comfort means that professionals can work more efficiently without the strain commonly associated with prolonged tool usage.

Durability is a critical factor in any tool's performance, and the 98870 does not disappoint. Constructed with high-quality materials, it is designed to withstand heavy use and harsh working conditions, ensuring it remains a reliable option for years to come. Its sturdy build reduces the likelihood of wear and tear, making it a sound investment for any user.

Portability is another important feature of the 98870. It is lightweight and equipped with a compact design, allowing for easy transportation and storage. Users can conveniently carry it to job sites or store it in tight spaces without hassle.

In summary, the Harbor Freight Tools 98870 is a powerful, versatile tool featuring variable speed control, an ergonomic design, and durable construction. These characteristics, combined with its affordability, make it an excellent choice for both DIYers and professionals looking to enhance their tool collection. Whether tackling small projects at home or engaging in larger-scale jobs, the 98870 proves to be a dependable ally in any undertaking.
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