Assessments - 2, GPA: 3.5 ( )

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Extension cord lengths longer than 25 feet will require heavier wire gauges to compensate for voltage losses. INSTALLING THE ELECTRODE HOLDER 2.6 Attach the electrode holder to the electrode cable according to the following steps. Remove the handle (3) from the electrode holder (1) by removing the 1. screw holding the handle (not shown) and sliding the handle off. Remove the screw (6) from the electrode holder (1). 2. Push the cable (4) through the handle (3). 3. Insert the screw (6) through the hole in the electrode holder, then 4. through the cable lug (5) and thread into the Rectangular Mounting Nut (2). Slide the handle back onto the electrode holder body (when it is 5. aligned properly it will slide on easily). Press the two parts together and reinsert the screw to hold the handle in place. INSTALLING THE GROUND CLAMP 2.7 Attach the ground clamp to the ground cable according to the following steps. Remove the rubber grip from 1. ground clamp. Push the cable through the 2. grip as illustrated. Attach cable lug to the ground 3. clamp with lockwasher and screw. Slide grip back up over ground 4. clamp. OPERATION 3. GETTING TO KNOW YOUR NEW WELDER 3.1 Whether or not you have welded before, it is important that you become familiar with your welder, its controls, and the results achieved at different settings. We strongly recommend that you practice with your new welder on scrap metal, trying a variety of heat settings, base metal thicknesses, and welding positions for each type and size of wire that you will be using. By doing this you will gain a feel for how changes in these welding variables affect the weld. If you have not welded before, you will need to develop welding skills and techniques as well. The self-taught welder learns through a process of trial and error. The best way to teach yourself how to weld is with short periods of practice at regular intervals. Do not attempt to weld on any valuable equipment until you have made practice welds on scrap metal that can be discarded. The scrap metal should be of the same type and thickness as that of the item to be welded. Only after you are satisfied that your practice welds are of good strength and appearance, should you attempt your actual welding job. CONTROLS & THEIR FUNCTIONS 3.2 AMPERAGE CONTROL Two settings can be selected. The lower setting for thinner material and smaller welding electrodes, the higher setting for thicker materials and larger welding electrodes. ON-OFF – THERMAL INDICATOR To turn the power on to the welder, push the main switch to ON. Your welder has a lighted main switch. This light will come on if the welder has overheated. The light indicates that a thermostat has shut off the power within the welder. Once the welder has cooled, the thermostat will turn the welder back on and the light will go out. Over heating is usually caused by exceeding the welder duty cycle. DUTY CYCLE The duty cycle rating of a welder is a measure of how long the welder can weld and how long it must be rested and cool. It is expressed as a percentage of ten minutes (the industry recognized cycle time) and represents the maximum welding time allowed, with the balance of the ten minute cycle required for cooling. INTERNAL THERMAL PROTECTION If you exceed the duty cycle of your welder, an internal thermal protector will open and shut off all welder functions. If this ever happens to you, do not shut off the welder! Leave it turned on. After cooling a while, the thermal protector will automatically reset and the welder will function again. However, you should wait at least 10 minutes after the thermal protector opens before resuming welding, even if the protector resets itself sooner, or you may experience less than specified duty cycle performance. CAUTION! DO NOT CONSTANTLY EXCEED THE DUTY CYCLE OR DAMAGE TO THIS WELDER WILL RESULT! CONNECT WELDER GROUND Attach the ground clamp to the work piece making sure that the work piece is cleaned of dirt, oil, rust, scale, oxidation, and paint at the point of connection. It is best to connect the ground clamp directly to the work piece and as close to the weld as possible. If it is impractical to connect the ground clamp directly to the work piece, connect it to metal that is securely attached to the work piece, but not electrically insulated from it. Also, make sure this other metal is of similar or greater thickness than that of the work piece. CAUTION! RISK OF ELECTRONIC COMPONENT DAMAGE! If the ground clamp is being connected to an automobile or other equipment with on-board computer systems, solid state electronic controls, solid state sound systems, etc., do not weld until disconnecting the cable from the battery that is attached to chassis ground. Failure to do so may result in electronic component damage! GENERAL WELDING INFORMATION 4. PREPARATIONS FOR WELDING 4.1 An important factor in making a satisfactory weld is preparation. This includes studying the process and equipment and then practice welding b...

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