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GENERAL INFORMATION - TM-5-3895-374-24-1_567
BELT DEFLECTION FORCES (IN POUNDS)

TM-5-3895-374-24-1 Paving Machine Bituminous Material: Crawler Mounted Diesel Engine Driven Manual
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TM 5-3895-374-24-1 GP255FH 1. Mount the blower on any level concrete floor or pad. The location chosen must provide an unobstructed flow of air to the blower inlet If the blower Is Installed on a floor on which other machinery is mounted, install vibration Isolation pads between the blower base and the floor. In addition, the mounting bolts must be Isolated from the blower base. This configuration Is shown in figure 2 Cork isolation pads are available from Hauck. Fig.  2 Illustration depicting the proper placement of the vibration isolation pad.   If the blower is installed on a structure above the floor, the mass and rigidity of the structure must be such that its natural frequency is well above the motor or impeller operating frequency to prevent resonance. 2. Ensure  that  the  piping  between  the  blower  and  the  load  has  been  selected  to  minimize  pressure  losses.  The pressure drop for the control valve should be selected for the designed control quality, ranging from 5-30% of the system drop It is suggested that, where practical, the piping, valves, fittings, etc. be sized for a total pressure drop of no more than 3.4" water column (2 oz ) 3.   Rotate the blower air outlet, as required, to align it with the air piping. Each   blower   Is   constructed   to   allow   the   Impeller   to   rotate   In   only   one   direction   Two   types   of   blowers   are manufactured; one provides for clockwise rotation, the other counterclockwise rotation The discharge outlet on each of these types can be rotated to any one of the seven positions shown below. Fig 3 - Standard Discharge Positions viewed from motor drive ends. To rotate the casing, accomplish the following. Do not disassemble the two casing halves. A Loosen and remove the eight bolts holding the casing to the base assembly B. Rotate the casing as required and reseat the casing against the base assembly. C. Ensure that all bolt holes are aligned. D. Reinsert and securely tighten all eight bolts. 4. Connect the air piping to the blower outlet using the rubber sleeve and clamps supplied with each blower Ensure that the air piping Is completely supported by external hangers to prevent unnecessary strain on the blower casing. In addition to  preventing  vibration  transfer  to  the  blower,  the  rubber  sleeve  prevents  the  induction  of  loads  In  the  casing  due  to misalignments between the piping system and the blower discharge connection. (page 3-540)







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