TM 5-3895-374-24-2 SECTION I- GENERAL A - Introduction This    instruction    manual    is    intended    to    assist    those responsible with the installation, operation and maintenance    of    SlHI’s    ZTN    sell    cooling    centrifugal pumps.        It    is    recommended    that    this    manual    be thoroughly read before installing or performing any work on the pump or pumping unit. B - Receipt of Equipment Upon  receipt,  check  equipment  for  shipping  or  storage damage.      Care   should   be   taken   when   handling   the pumps.    Any  damage  or  shortage   at   time   of   delivery should be reported to the transportation company. C - Storage SIHl’s    standard    shipping    and    storage    preparation    is suitable for protecting the pump during shipping and also for a short period between installation and start-up.  Long term storage information is available from your local SIHI representative. D - Design SIHl’s   self   cooling   ZTN   pump   is   a   non-self   priming, horizontal, single stage centrifugal pump of the back pull- out design.  The back pull-out design allows the removal of   the   complete   internals   without   removing   the   pump casing  from  the  system.    If  a  spacer  type  coupling  is used,    the    pump    internals    may    be    moved    without disrupting  the  motor.    V-belt  drive  arrangement  is  not recommended   unless   a   ’jack   shaft’   is   used.      Shaft sealing  is  obtained  with  radial  shaft  seal  rings  arranged in  series.    External  cooling  is  not  required.    Pump  has horizontal suction and vertical discharge flanged connections. E - Limitations For  maximum  operating  speed  consult  your  local  SIHI representative. Pressure equals sucton pressure plus ddferential pressure    at    shut-off    (zero    flow)    n    suction    pressure exceeds 70 PSIG.  consult SIHI factory SECTION II INSTALLATION A- Location Locate  pump  as  close  as  practical  to  the  liquid  supply. Piping  should  be  installed  per  piping  recommendations of paragraph D., E.  & F.  Floor space must be sufficient for     inspection     and     maintenance.          Allow     sufficient headroom    to    permit    use    of    a    lifting    mechanism,    if required.      Pumps   are   an   air   cooled   design.      Provide adequate ventilation, DO NOT INSULATE PUMP. B-Foundation Standard    baseplate    mounted    units    are    suitable    for installation on concrete pads or fabricated steel structures.        Special    baseplates    with    provisions    for grouting    are    available.        The    location    and    size    of foundation    bolt    holes    are    shown    on    the    dimension assembly drawings which can be provided  by  your  local SIHI representative. C- Alignment The   service   life   of   the   pump   is   dependent   on   good coupling alignment. Flexible couplings will not compensate  for  shaft  misalignment.    If  the  motor  was mounted by SIHI, the pump and motor were aligned prior to  shipment  from  the  factory.    Since  baseplates  are  not perfectly   rigid,   handling   during   shipment,   pipe   loading and  foundation  stresses  mandate  an  alignment  check. Prior to start-up adjust alignment by adding shims under the motor feet. The   dial   indicator   method   for   checking   coupling alignment  is  preferred,  refer  to  Figures  1  and  2.    To measure  parallel  misalignment,  attach  dial  indicator  to one coupling hub with the indicator button resting on the O.D.  of the other coupling hub (Figure 1).  To measure angular  misalignment,  the  indicator  button  rests  on  the face of the other coupling hub near the O.D.  (Figure 2). Measure   misalignment   by   rotating   the   shaft   and   dial indicator   one   full   revolution,   the   other   shaft   remains stationary.    Record  the  Total  Indicator  Reading  (T.I.R.). Parallel  and  angular  misalignment  should  be  limited  to 0.002 inches T.I.R. If   a   dial   indicator   is   not   available,   an   adequate alignment is possible using a straight edge, feeler gauge, micrometer or caliper. (page 3 - 1142)