TM 10-4320-321-13&P FORM 5S2583 MODELS 2P121 THRU 2P128 & WP373 THRU 2P380 01615 Installation (Continued) WARNING: SUPPORT PUMP AND PIPING WHEN ASSEMBLING AND WHEN INSTALLED.  FAILURE TO DO SO MAY CAUSE PIPING TO BREAK,  PUMP  TO  FAIL,  MOTOR  BEARING  FAILURES,  ETC.    ALL  OF  WHICH  CAN  RESULT  IN  PROPERTY  DAMAGE  AND/OR PERSONAL INJURY. NOTE: If plastic or fabric hose is used for the suction piping, it should be of a reinforced type so as not to collapse under suction. The suction piping should be the same size or one size larger than the discharge piping. 4. It is recommended that a foot-valve be used on the suction line to assure quick priming and that a suitable suction strainer be attached to the suction line so that large pieces of foreign material are not drawn into the pump. NOTE:  A  foot-valve  is  required  when  the  suction  lift  is  over  10  feet  or  when  long  suction  line  runs  are  involved.    The  maximum opening in the suction strainer should be 1/4". 5. Inspect    impeller    for    proper    rotation.        When    viewing    the    pump    end,    the    motor    should    rotate counterclockwise. CAUTION: Clockwise rotation when facing pump inlet will destroy motor.  Incorrect wiring is not covered under limited warranty. 6. Make necessary wiring connection for the voltage outlet supply, using a wire of adequate size to minimize voltage  drop  at  the  motor.    DOUBLE  CHECK  ALL  CONNECTIONS.    (Refer  to  wiring  diagram  on  motor nameplate or the inside cover of the connection box in the motor end bell.) WARNING: NEVER CONNECT THE GREEN (OR GREEN AND YELLOW) WIRE TO A LIVE TERMINAL! 7. A ground wire (Ref.  No.  25) is included with each unit.  One end has been attached to the pump.  Attach the  loose  end  to  an  acceptable  ground,  as  determined  by  a  qualified  electrician  or  as  required  by  codes governing installation. WARNING:      EACH   APPLICATION   SHOULD   BE   REVIEWED   FOR   COMPLIANCE   WITH   LOCAL   CODES,   FIRE   DEPARTMENTS, INSURANCE COMPANIES, NATIONAL ELECTRICAL CODE (NEC), ETC.  FOR  PROPER  GROUNDING  OF STATIC ELECTRICITY. CAUTION: Always wire the motor with a three wire system, insuring that a ground wire runs to a good electrical ground such as a grounded water system or conduit.  Also, insure that a good electrical ground is provided at the supply end of the line.  Connections should be made with flexible conduit to minimize vibration transmission. 8. Install  auxiliary  components   (e.g.  - pressure switch, timer, etc.). Operation 1. It  is  necessary  to  prime  the  pump  casing  before  initially  starting  the  pump.    The  quickest  and  easiest method is to remove the pipe plug from the tee in the discharge and fill the casing with liquid (it holds about a quart).  If the tee was not installed in the discharge, the casing can be primed by removing the discharge piping. NOTE: This pump is designed so that it should make it unnecessary to continually reprime.  When the pump is shut down, enough liquid normally remains in the casing so that it will not have to be reprimed. CAUTION: Do not run pump dry as permanent damage to the mechanical seal will result. 2. Activate the unit. NOTE: It may take up to five minutes for unit to prime once casing has been filled with liquid.  In runs over 10 ft.  horizontally or vertically a foot-valve must be used and unit totally primed including the inlet (suction) piping and the casing. CAUTION: The proper impeller (motor) rotation is CCW facing the front of the pump.  Wrong rotation will give low performance, low head and could damage unit and/or injure personnel.  Maintenance WARNING:    MAKE    CERTAIN    THAT    THE    POWER    SOURCE    IS    DISCONNECTED    BEFORE    ATTEMPTING    TO    SERVICE    OR DISASSEMBLE ANY COMPONENTS! IF THE POWER DISCONNECT IS OUT OF-SIGHT, LOCK IT IN THE OPEN POSITION AND TAG TO PREVENT APPLICATION OF POWER. ROUTINE Pump should be checked daily, weekly, monthly, etc.  for proper operation.  If anything has changed since unit was new, unit should be removed and repaired or replaced.  Only qualified electricians or servicemen should attempt to repair this unit.  Improper repair and/or assembly can cause an electrical shock hazard. Should   the   pump   require   servicing,   refer   to   the   Replacement   Parts   Illustration   (Figure   9)   as   an   aid   in disassembly and reassembly procedures.  Replace all worn or damaged parts. STORAGE If  the  pump  is  located  in  an  area  subject  to  freezing  temperatures,  the  pump  should  be  drained  when  not  in operation.      ALSO,   THE   PUMP   SHOULD   BE   FLUSHED   AFTER   EACH   USE,   IF   USED   WITH   GUMMY SUBSTANCES OR SIMILAR FLUIDS. MECHANICAL SEAL REPLACEMENT Should the mechanical seal, which consists of seal cartridge (Ref.  No.  11) and seal seat (Ref.  No.  12) require replacement, proceed as follows and refer to Figures 7, 8, and 9. IMPORTANT: ALWAYS REPLACE BOTH THE SEAL SEAT    AND    THE    SEAL    CARTRIDGE    TO    INSURE    PROPER    MATING    OF    COMPONENTS!    IT    IS RECOMMENDED  THAT  THE  TEFLON  IMPELLER  O-RING  (REF.    NO.    15)  ALSO  BE  REPLACED  WHEN REPLACING THE PUMP SEAL. 1. Unthread capscrews (Ref.  No.  9) and remove casing (Ref.  No.  17) and O-ring (Ref.  No.  10). 2. Unscrew impeller locknut (Ref.  No.  16) from the shaft adapter (Ref.  No.  3) counterclockwise. NOTE: Insert the long leg of a 3/16" hex key (Allen wrench) into the head recess of one of the socket head capscrews (Ref.  No.  1) in the shaft adapter clamp, and hold it against one of the adapter (Ref.  No.  5) ribs to prevent the shaft from turning. -6-