CHAPTER IV - TROUBLE SHOOTING SECTION I ELECTRICAL AND REFRIGERATION 1 - General 2 - Electrical Problem: Compressor Will Not Run Problem: Compressor Runs But Will Not Refrigerate SECTION II WATER SYSTEM 1 - Problem: Restricted Or No Water Flow 2 - Problem: Continuous Water Flow 3 - Problem: Improper Drainage SECTION III ADJUSTMENT 1 - Controlling Thermostat 2 - Water Regulating Valve SECTION IV  FIELD REPLACEABLE PARTS SECTION V FACTORY AUTHORIZED REPAIR STATION SECTION I - ELECTRICAL AND REFRIGERATION 1. GENERAL Before    attempting    to    trouble    shoot    the    refrigeration system,  determine  the  demand  made  upon  the  cooler. How much water is being dispensed and how frequently. Examine     the     installation     and     determine     if     proper ventilation  has  been  allowed.    The  location  is  important since  the  cooler  should  never  be  near  a  steam  line,  hot air  ventilator  or  high  wattage  electrical  system.    Check the  electrical  supply  to  cooler.    When  these  procedures fail     to     remedy     the     trouble,     the     following     will     be necessary. 2. ELECTRICAL SCHEMATIC -ELECTRICAL To   test   the   electrical   components,   it   is   necessary   to remove    the    front    panel    or    wrap-around    cabinet    to provide access to the machinery compartment. Problem - Compressor will not run. Condition  -  The  water  cooler  is  dispensing  warm  water (over 600 F) and the compressor fails to start. Solution - Electrical Supply Test  electrical  supply  since  there  may  be  a  blown fuse. Solution -  Thermostat With  electrical  supply  off,  test  for  continuity  with  an ohmmeter across the two terminals of the thermostat.    Failure  of  continuity  test  indicates  the power    element    has    lost    its    charge.        Replace thermostat. Solution Wiring With  electrical  supply  off,  carefully  inspect  wiring  for burnt insulation since it is an in- dication of a short.  Always replace poor or defective wiring. Condition  -  Fan  motor  operates,  but  compressor  fails  to start.  With electrical power off, proceed as follows. Solution - Overload Touch the compressor with your hand.  If abnormally warm        the    compressor    may    be    "off"    due    to overheating  and  the  overload  has  tripped.    Inspect and  clean  the  condenser  as  it  may  be  the  cause  of this     condition.          After     waiting     ten     minutes     for compressor   to   cool.      restore   electrical   power   and check  for  compressor  operation.    When  compressor is    cool    to    the    touch,    a    continuity    test    with    an ohmmeter  should  be  made  across  the  terminals  of the  overload.    Failure  of  continuity  test  indicates  a faulty overload. Replace with exact factory replacement. Solution -  Relay The  relay  can  be  tested  by  the  substitution  method. Remove and replace with factory replacement. Solution -  Capacitor When   used,   the   capacitor   can   be   tested   by   the substitution    method.        Remove    and    replace    with factory replacement capacitor of the same rating. Solution -  Compressor After    testing    the    electrical    components    and    the compressor fails to run, the compressor motor or the refrigeration  system  may  have  a  defect.    The  water cooler     in     warranty     should     be     repaired     at     an authorized repair station. Condition  -  With  water  flowing  and  electrical  supply  on, the   compressor   is   cycling   on   the   overload   (   has   an intermittent  clicking  sound  )  and  the  fan  motor  will  not run,  indicates  the  fan  motor  is  inoperative,  since  it  is wired in parallel with the compressor motor. Solution - Fan Motor Disconnect  electrical  supply  and  turn  fan  by  hand. The fan must rotate freely.  Any evidence of binding or the motor will not run, replace fan motor. 10