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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 EQUIPMENT MUST BE DE-ENERGIZED DURING ALL INSTALLATION AND WHICH MAY RESULT IN ELECTRICAL SHOCK AND/OR BURN. GENERAL Introduction WARNING: There is a hazard of electric shock or burn   whenever   working   on   or   around   electrical equipment. Turn off power supplying this equipment   before   working   inside   motor   control centers. G-1 The operation of motor control centers is dependent   upon   handling,   installation,   operation and maintenance by qualified personnel, as well as upon  proper  design  and  manufacture.    Failure  to follow certain fundamental installation and maintenance  requirements  could  lead  to  personal injury and the failure and loss of the motor control center as well as damage to other property For the purpose of this guide, a qualified person is one who is familiar with the installation, construction  and  operation  of  the  equipment  and the hazards involved.  He should be: a.   Trained and authorized to energize, de- energize,   clear,   ground,   and   tag   circuits   and equipment     in     accordance     with     established safety practices b.   He  should  also  be  trained  in  the  proper  care and use of protective equipment such as rubber gloves, hard hat, safety glasses or face shields, flash clothing, etc., in accordance with established safety practices. Description G-2 Motor  Control  Centers  provide  the  most  suitable method  for  grouping  electrical  motor  control  and other  related  devices  in  a  compact,  economical, free-standing installation.  A motor control center is made  of  standardized  vertical  sections  consisting of     totally     enclosed,     dead     front,     free-standing structures bolted together.  These sections support and  house  control  units,  a  common  bus  bar  for distributing    power    to    the    control    units    and    a network   of   wire   trough   and   conductor   entrance areas    for    accommodating    out-going    load    and control wires. The  control  units  consist  of  components  such  as combination motor starters, branch feeder devices or  lighting  panelboards.    Each  is  mounted  in  an individual,   isolated   compartment   having   its   own cover.    When  front-of-board  unit  arrangement  is selected, all units are mounted on the front side of the control center.  A 15" (381 mm) deep, 20" (508 mm)  wide  section  is  provided  for  front-of-board, although a 20" (508 mm) deep, 20" (508 mm) wide front-of-board  structure  is  also  available.    Larger sections are available for mounting larger equipment. When  back-to  back  arrangement  is  selected,  the units are mounted on both the front and rear of the control center A 20" (508 mm) deep, 20" (508 mm) wide section is provided for back-to-back arrangement.      The   standard   height   of   all   motor control center structures is 91 ½" (2324 mm). Packaging G-3 Motor  control  centers  are  constructed  in  shipping blocks  of  three  vertical  sections  maximum.    This allows  for  ease  in  handling  during  transportation and  installation.    The  main  horizontal  bus  of  all shipping  blocks  is  spliced  together  at  the  jobsite with the use of splice bars. Before being packed for shipment from the factory, the   motor   control   center   is   inspected   visually, electrically   and   mechanically   by   a   professional Quality  Control  Analyst.    Certification  of  Quality Control testing is available upon request. After  leaving  Quality  Control,  each  shipping  block is carefully packaged and attached to a skid. Inspection G-4 Inspect  the  motor  control  center  for  any  damage as   soon   as   it   is   received.      Delivery   of   the equipment  to  a  carrier  at  any  of  the  Square  D Plants  or  other  shipping  point  constitutes  delivery to  the  purchaser.    Title  and  all  risk  of  loss  or damage  in  transit  shall  pass  to  the  purchaser  at that time, regardless of freight payment. All claims for loss and damage must be made by the purchaser to the carrier. The  packaging  material   should   be   replaced   for protection until installation is begun. (page 3-120) DANGER







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