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If, when standing at the suction end of a centrifugal pump, looking over pump shell toward pulley, the top of shaft revolves from right to left, or against the sun, the pump is right hand, and if from left to right, or with the sun, it is left hand.
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A pump should be located in a convenient as well as a clean place. It should be well set upon a suitable foundation, so that it may be free from vibration or jar; this “note” applies to direct-acting, self-contained pumps, as well as to others.
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The economical operation of a pump depends, to a great extent, upon the kind and condition of the packing in the stuffing-boxes and pistons, its quality, adaptability to particular requirements, and the method of placing it in the stuffing-boxes and plungers.
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Almost all the stuffing-boxes on pumps are too shallow and the glands too short. To keep a rod tight under these conditions the packing must be of the proper size and quality, and it must be put in with a view to securing the greatest possible degree of elasticity, so that the rod may be kept tight with the least pressure on the packing.
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