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Lyman Mag 20 Furnace Instructions Manual

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    Page 1 Mag 20 Furnace Assembly, Operation and Parts Assembly The main body of your furnace is fully assembled and factory-tested. To facilitate packag- ing, the valve rod and operating lever have not been factory-installed and you must do so, prior to using the furnace as follows: Attach the operating lever spring to the operating lever. Slide the valve rod on the operating lever as shown in Figure 19. Next, place the valve rod and operating lever, into position as shown in Figure 20. Fasten the operating lever...
    Page 2 Safety Precautions: 1) No casting should be done without basic safety garb. This would include long pants and long sleeves, sturdy gloves, eye protection and closed top shoes. 2) Keep all flammable items away from casting area. Do not operate unit on flammable materials such as paper, wood or carpeting. 3) Casting should be done in a well ventilated area. Avoid breathing fumes and dust from furnace. 4) Never allow moisture near molten lead. When moisture is introduced to molten lead, a terrific steam...
    Page 3 When replenishing a near-empty pot, there is no need to adjust the control knob since the furnace automatically increases its heating efforts until the designated pot temperature is reached. The blinking pilot light indicates the furnace is at temperature. The bottom pour spout valve system of the furnace has been designed to provide efficient trouble-free casting. Valve leakage is usually caused by dirt and grit, suspended in the molten metal, jamming the valve partially open. Opening that valve to...
    Page 4 there is about 1/4 between the pouring spout of the furnace and the top of the mould block. Tighten the elevation adjustment screws against the support posts so the mould guide will remain in this position. To align the sprue hole in the mould with the pouring spout on the furnace, you must loosen the carriage bolt in the adjustable mould guide slide. Loosening this bolt will allow the adjustable slide to be moved backward and forward. This also allows the horizontal alignment of the track. On multiple...
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