Tham khảo tài liệu 'refrigeration and air conditioning equipment cooling episode 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Courtesy Keppers Company. Incorporaied Figure 55. Checking offset alignment wide hub separation . illustrates the method of positioning gaskets between each set of flanges for spacer and floating shaft type coupling. Assemble the coupling as shown in figure 59. Keep the bolt holes in both flanges and gasket in line. Insert the body fitting bolts and nuts and tighten the bolts and nuts with wrenches no larger than the one furnished with the coupling until the flanges are drawn together. Using an oversize wrench on the heads of nuts and bolts may round their heads or strip the threads. 7. Lubricate the coupling as illustrated in figure 60. Remove both lubricating plugs and apply the quantity and type of lubricant as specified by the manufacturer s instruction data sheet. If grease is used positioning of the lubrication holes is not necessary. When a fluid lubricant is used it is recommended that the lubricating holes be positioned approximately 45 from the vertical to prevent loss of lubricant. A good oil lubricant no lighter than 150 seconds Saybolt Universal SSU Courtesy Keppers Company tncoiporated Figure 56. Checking angular and offset alignment. Courtesy Koppen Company. Incorporated Figure 57. Gasket insert. or heavier than 1000 SSU at 210 F. can be used. Before replacing the lubrication plugs check the copper ring gaskets to make sure they are in position and are undamaged. Tighten plugs with the wrench furnished with coupling as shown in figure 61. 8. The coupling must be well lubricated at all times. The couplings that use oil collector rings in the end of the cover can be lubricated while stopped or running. The compressor should not be started until the coupling has been checked for proper amount of oil. Oil will overflow the oiling ring with the coupling at rest when enough oil has been added. Other types of couplings may have sleeves attached by a gasket to the hubs with no oiling ring. The manufacturer will give specifications as to the amount of oil .
