Wiring And Grounding; Operation; Maintenance; Disassembly - Xylem NPO Manual De Instruccion

WI WI WI WI WI WI WI WI WI WI WIRI

WIRING AND GROUNDING

RI RI RI RI RI RI RI RI RI RING NG NG NG NG NG NG NG NG NG NG A A A A A A A A A A A ND ND ND ND ND ND ND ND ND ND ND G G G G G G G G G G G RO RO RO RO RO ROUN RO RO RO RO RO UN UN UN UN UN UN UN UNDI UN UN
Install, ground and wire ac-
WARNING
cording to local and National
Electrical Code requirements.
Install an all leg disconnect
switch near the pump.
Disconnect and lockout electri-
Hazardous voltage
cal power before installing or
can shock, burn or
cause death.
servicing pump.
Electrical supply MUST match pump's nameplate
specifications. Incorrect voltage can cause fire,
damage to the motor and voids warranty.
Motors equipped with automatic thermal protec-
tion open the motor's electrical circuit when a
thermal overload exists. This can cause the pump
to start unexpectedly and without warning.
Use only stranded copper wire to motor and ground.
The ground wire MUST be at a least as large as the wire
to the motor. Wires should be color coded for ease of

maintenance.

FAILURE TO PERMANENTLY
WARNING
GROUND THE PUMP, MOTOR AND
Hazardous
CONTROLS BEFORE CONNECTING
voltage
TO ELECTRICAL POWER CAN
CAUSE SHOCK, BURNS OR DEATH.
NOTICE: UNIT ROTATION IS CLOCKWISE, WHEN
VIEWED FROM THE MOTOR END.
INCORRECT ROTATION MAY CAUSE
DAMAGE TO THE PUMP AND VOIDS THE
WARRANTY.

OPERATION

OPER OP OP OP OP OP OP OP OP OP OP ER ERAT ER ER ER ER ER ER ER ER AT AT AT AT AT AT AT ATIO AT AT IO IO IO IO IO IO IO IO ION IO N N N N N N N N N N
NOTICE: PUMP MUST BE FULLY PRIMED
BEFORE OPERATION.
OPERATION AT OR NEAR ZERO
WARNING
FLOW CAN CAUSE EXTREME HEAT,
PERSONAL INJURY OR PROPERTY
DAMAGE.
After stabilizing the system at normal
operating conditions, check the piping.
If necessary adjust the pipe supports.
Extreme heat can
cause personal injury
or property damage.
MA MA MAINTENANCE MA MA MA MA MA MA MA MA MAIN IN IN IN IN IN INTE IN IN IN IN TENA TE TE TE TE TE TE TE TE TE NANC NA NA NA NA NA NA NA NA NA NC NC NC NC NC NC NCE NC NC NC E E E E E E E E E E
Motors have permanently lubricated bearings. No lubri-
cation is possible or necessary. Follow the motor manu-
facturer's recommendations for maintenance.
4
DI D I DI D DI DI DI DING DI DI NG NG NG NG NG NG NG NG NG NG
DISA DI DI DI DI DI DI DI DI DI DI

DISASSEMBLY

SA SA SA SA SA SA SASS SA SA SA SS SS SS SS SS SS SS SSEM SS SS EMBL EM EM EM EM EM EM EM EM EM BL BL BL BL BL BL BL BL BL BLY Y Y Y Y Y Y Y Y Y Y
WARNING FAILURE TO DISCONNECT AND
LOCKOUT ELECTRICAL POWER
Hazardous
BEFORE ATTEMPTING ANY
voltage
MAINTENANCE CAN CAUSE
SHOCK, BURNS OR DEATH.
CASING MAY CONTAIN
WARNING
HAZARDOUS FLUIDS THAT CAN
CAUSE PERSONAL INJURY OR
PROPERTY DAMAGE.
Containing pumpage as required,
remove pump casing vent and drain
Hazardous fluids can
cause personal injury plugs (408). Remove and discard the
or property damage.
respective plug O-rings. Drain and flush
system, as required.
Remove the four motor bolts from the motor base or
foundation.
Remove the eight casing cap screws (370), then using the
slots provided about the casing (100), pry the back pull-
out assembly from the casing.
Remove and discard the casing O-ring (513) and the
internal casing O-ring (349).
NOTICE: IMPELLER COMPRESSES THE
MECHANICAL SEAL SPRING – BE
PREPARED FOR THE IMPELLER TO
SPRING FROM SHAFT WHEN IMPELLER
IS REMOVED.
Remove the end cap from the motor, exposing a slot in
the end of the motor shaft. While holding the shaft from
rotation with a screwdriver, remove the impeller locknut
(304) (if present) by turning it COUNTERCLOCKWISE.
Remove impeller (101) by turning counterclockwise
when looking at the front of the pump. Protect hand
with rag or glove. Apply localized heat for 1-2 minutes or
to an approximate temperature of 250º C. Disassemble
while hot. Heating will decrease the break-loose torque
of the Loctite 243 and allow for easy removal.
Excessive heating may cause damage to
CAUTION
the seal. Seal replacement is recommend-
ed if pump is disassembled or repaired.
Using two pry bars, 180º apart, CAREFULLY separate
the seal housing (184) from the motor adapter (108).
The mechanical seal (383) rotary assembly will slide from
the motor shaft with the seal housing.
CAREFULLY push out the mechanical seal stationary
seat from the seal housing. Inspect and wipe clean the
stationary seat bore. Replace as necessary. DISCARD the
mechanical seal assembly.
If necessary, remove the four motor hex bolts (371) and
CAREFULLY slide the motor adapter from the shaft.
Replace the motor assembly and deflector (123), as
required.
Disassembly is complete.