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JNSTALLATION AND OP(';l{A'rING INSTRUCTIONS
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pressors in service are equipped with the Type "B-3"
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The construction and operation of the automatic oil
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cup are very simple, as will be evident from the sectional
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Fig. 15. There is an oil chamber a which is
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filled from the top when the cap nut 5 is removed. The
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when the seal between the cap and body is broken the
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air pressure is vented to the atmosphere, thereby per
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mitting the filling operation to be performed while the
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compressor is running. The stem portion 3 of the
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with the pipe connection leading to the air cylinder, and
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as to permit chamber a to be filled without possibility of
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pouring oil directly into the passage, which would defeat
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the very purpose of the lubricator.
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Fig. 15. Exterior and Sectional Views of the Type B·3
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