Xylem IM101 R04 MODELS SHV and NPV - Manual (Page 4)

4
WARNING
Hazardous voltage
can shock, burn or
cause death.
WIRING and GROUNDING
Install, ground and wire according
to local and National Electrical Code
requirements.
Install an all leg disconnect switch near
the pump.
Disconnect and lockout electrical power before
installing or servicing pump.
Electrical supply MUST match pumps name plate
specifications. Incorrect voltage can cause fire,
damage to the motor and voids warranty.
Motors not protected MUST be provided with
contactors and thermal overloads for single phase
motors, or starters with heaters for three phase
motors. See motor nameplate.
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.
Follow motor manufacturer's wiring diagram on the
motor nameplate or terminal cover carefully.
FAILURE TO PERMANENTLY GROUND
THE PUMP, MOTOR AND CONTROLS
BEFORE CONNECTING TO ELECTRI-
CAL POWER CAN CAUSE SHOCK,
BURNS OR DEATH.
ROTATION
NOTICE: INCORRECT ROTATION MAY CAUSE
DAMAGE TO THE PUMP AND VOIDS THE
WARRANTY.
Correct rotation is right-hand, CLOCKWISE when
viewed from the motor end. On tank mounted units,
remove motor end plug or cover, turn power on and off
quickly to observe rotation.
To reverse three phase motor rotation, interchange any
two power supply leads.
OPERATION
SPLASHING OR IMMERSING OPEN
DRIP PROOF MOTORS IN FLUIDS
CAN CAUSE FIRE,SHOCK, BURNS OR
DEATH.
NOTICE: PUMP MUST BE FULLY PRIMED BEFORE
OPERATION. DO NOT RUN PUMP DRY OR PUMP
BEARING DAMAGE WILL RESULT.
After stabilizing the system at normal operating
conditions, check the piping. If necessary, adjust the pipe
supports.
MAINTENANCE
FAILURE TO DISCONNECT AND
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE SHOCK,
BURNS OR DEATH.
WARNING
Hazardous
voltage
Motors have permanently lubricated bearings. No lubri-
cation is possible or necessary. Follow the motor manu-
facturer's recommendations for maintenance.
If pump performance degrades due to excessive leakage,
inspect pump bearing, bushing and shaft for excessive
wear. Replace as necessary.
SEASONAL SERVICE:
To REMOVE pump from service, drain all pumpage
from pump and piping.
To RETURN pump to service, replace all plugs and
piping using Teflon™ tape or equivalent on male threads
for the NPV Series.
Refer to "OPERATION" section of manual.
NPV SERIES DISASSEMBLY
Follow ALL warnings and instructions in the
"MAINTENANCE" section of this manual.
While complete disassembly of the unit will be described,
it is recommended that you proceed only as far as re-
quired to perform the maintenance needed.
Remove the mounting plate, or clamp, from pump.
LIQUID END:
1. Remove casing bolts (5).
2. Remove casing (1, 2) and casing O-ring (4) from
pump mounting plate (7).
3. Remove guidevane (3) and O-ring (21) on model SL
only.
4. Restrain shaft (12) from rotation by applying a 9 ⁄
16
"
wrench to shaft flats through holes in the support
tube (11).
5. Remove impeller nut (20) by turning COUNTER-
CLOCKWISE. Nut may need to be heated with a
torch to remove.
NOTICE: EXERCISE CAUTION IN HANDLING
HOT IMPELLER NUT.
6. Remove impeller (16, 17) by turning COUNTER-
CLOCKWISE when looking at the front of the
pump. Protect hand with a rag or glove.
NOTICE: SUPPORT TUBE HAS LEFT HAND
THREADS.
7. Remove pump plate from support tube by turning
plate CLOCKWISE when viewing from the front of
the pump.
8. Remove snap ring (13) from pump plate and pull out
restricting bushing (14).
9. Press out pump bearing (15A, 15B) with a bearing or
arbor press.
10. Remove support tube from motor plate (9) by
turning tube CLOCKWISE when viewing from the
front of the pump.
11. Remove motor end plug, or cover, to expose
screwdriver slot, or flats, on end of the motor shaft.
12. Restrain motor shaft with appropriate tool and
remove shaft extension (12) from motor shaft, by
turning it COUNTERCLOCKWISE. Shaft extension
may need to be heated with a torch to remove. Apply
heat to the shaft extension, not to motor shaft.
WARNING
Hazardous
voltage
WARNING
Hazardous
voltage