Xylem IM013 User Manual [en, es, fr]
INSTRUCTION MANUAL
IM013
Model NPE/NPE-F
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SUBJECT PAGE
Safety Instructions .........................................................................................................................................................3
Important ......................................................................................................................................................................3
Installation ....................................................................................................................................................................3
Suction Piping ...............................................................................................................................................................4
Discharge Piping............................................................................................................................................................4
Motor-To-Pump Shaft Alignment ...................................................................................................................................4
Rotation ........................................................................................................................................................................5
Operation ......................................................................................................................................................................5
Maintenance..................................................................................................................................................................5
Disassembly ...................................................................................................................................................................5
Reassembly ....................................................................................................................................................................6
Troubleshooting Chart ...................................................................................................................................................6
NPE Standard Repair Parts List .....................................................................................................................................7
Mechanical Seal Application Chart ................................................................................................................................7
Limited Warranty ..........................................................................................................................................................8
Declaration of Conformity ..........................................................................................................................................24
Pump Model Number:
Pump Serial Number:
Dealer:
Dealer Phone No.:
Date of Purchase:
Date of Installation:
Current Readings at Startup:
1 Ø 3 Ø L1-2 L2-3 L3-1
Amps: Amps:
Volts: Volts:
2
SAFETY INSTRUCTIONS
DANGER
WARNING
CAUTION
WARNING
Hazardous fluids
can cause fire,
burns or death.
CAUTION
CAUTION
CAUTION
TO AVOID SERIOUS OR FATAL PERSONAL INJURY
OR MAJOR PROPERTY DAMAGE, READ AND
FOLLOW ALL SAFETY INSTRUCTIONS IN MANUAL
AND ON PUMP.
THIS MANUAL IS INTENDED TO ASSIST IN THE
INSTALLATION AND OPERATION OF THIS UNIT
AND MUST BE KEPT WITH THE PUMP.
This is a SAFETY ALERT SYMBOL.
When you see this symbol on the pump
or in the manual, look for one of the following signal words and be alert to the
potential for personal injury or property
damage.
Warns of hazards that WILL cause
serious personal injury, death or major
property damage.
Warns of hazards that CAN cause
serious personal injury, death or major
property damage.
Warns of hazards that CAN cause personal injury or property damage.
NOTICE: INDICATES SPECIAL INSTRUCTIONS
WHICH ARE VERY IMPORTANT AND
MUST BE FOLLOWED.
THOROUGHLY REVIEW ALL INSTRUCTIONS
AND WARNINGS PRIOR TO PERFORMING ANY
WORK ON THIS PUMP.
MAINTAIN ALL SAFETY DECALS.
UNIT NOT DESIGNED FOR USE
WITH HAZARDOUS LIQUIDS OR
FLAMMABLE GASES. THESE
FLUIDS MAY BE PRESENT IN
CONTAINMENT AREAS.
Always disconnect electrical power when
handling pump or controls.
1.3. Motors must be wired for proper voltage. Motor wir-
ing diagram is on motor nameplate. Wire size must
limit maximum voltage drop to 10% of nameplate
voltage at motor terminals, or motor life and pump
performance will be lowered.
1.4. Always use horsepower-rated switches, contactor and
starters.
1.5. Motor Protection
1.5.1. Single-phase: Thermal protection for single-
phase units is sometimes built in (check nameplate). If no built-in protection is provided, use
a contactor with a proper overload. Fusing is
permissible.
1.5.2. Three-phase: Provide three-leg protection with
properly sized magnetic starter and thermal
overloads.
1.6. Maximum Operating Limits:
Liquid Temperature: 250º F (120º C)
Pressure: 125 PSI
Starts Per Hour: 20, evenly distributed
1.7. Regular inspection and maintenance will increase
service life. Base schedule on operating time. Refer to
Section 8.
2. INSTALLATION:
2.1. General
2.1.1. Locate pump as near liquid source as possible
(below level of liquid for automatic operation).
2.1.2. Protect from freezing or flooding.
2.1.3. Allow adequate space for servicing and ventila-
tion.
2.1.4. All piping must be supported independently of
the pump, and must “line-up” naturally.
DESCRIPTION & SPECIFICATIONS:
The Models NPE (close-coupled) and NPE-F (framemounted) are end suction, single stage centrifugal pumps
for general liquid transfer service, booster applications,
etc. Liquid-end construction is all AISI Type 316 stainless
steel, stamped and welded. Impellers are fully enclosed,
non-trimable to intermediate diameters. Casings are fitted
with a diffuser for efficiency and for negligible radial shaft
loading.
Close-coupled units have NEMA 48J or 56J motors with
C-face mounting and threaded shaft extension. Framemounted units can be coupled to motors through a spacer
coupling, or belt driven.
1. IMPORTANT:
1.1. Inspect unit for damage. Report any damage to car-
rier/dealer immediately.
1.2. Electrical supply must be a separate branch circuit
with fuses or circuit breakers, wire sizes, etc., per
national and local electrical codes. Install an all-leg
disconnect switch near pump.
Never draw piping into place by forcing the
pump suction and discharge connections.
2.1.5. Avoid unnecessary fittings. Select sizes to keep
friction losses to a minimum.
2.2. Close-Coupled Units
2.2.1. Units may be installed horizontally, inclined or
vertically.
Do not install with motor below pump.
Any leakage or condensation will affect
the motor.
2.2.2. Foundation must be flat and substantial to
eliminate strain when tightening bolts. Use
rubber mounts to minimize noise and vibration.
2.2.3. Tighten motor hold-down bolts before
connecting piping to pump.
2.3. Frame-Mounted Units
2.3.1. It is recommended that the bedplate be grouted
to a foundation with solid footing. Refer to
Figure 1.
3
2.3.2. Place unit in position on wedges located at four
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
H
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 V
H = Min. Submergence in feet
V = Velocity in feet per second
=GPM x 0.321 GPM x 0.4085
Area D
2
Figure 4
1.5D
min.
3.0D
min.
D D
H min.
D min.
2
---------
---------
D
H min.
Figure 3
D
H min.
---------
---------
Finished grouting
(1/4")
Grout hole Base
Leveling wedges or shims—left in place
Top of foundation—
clean and wet down
Sleeve
Washer
Lug
(1/2 to 3/4")
Allowance
for leveling
Wood
frame
Figure 1
Grout
CAUTION
Parallel
Figure 6
Angular
points (two below approximate center of driver
and two below approximate center of pump).
Adjust wedges to level unit. Level or plumb suction and discharge flanges.
2.3.3. Make sure bedplate is not distorted and final
coupling alignment can be made within the
limits of movement of motor and by shimming,
if necessary.
2.3.4. Tighten foundation bolts finger tight and build
dam around foundation. Pour grout under
bedplate making sure the areas under pump
and motor feet are filled solid. Allow grout to
harden 48 hours before fully tightening foundation bolts.
2.3.5. Tighten pump and motor hold-down bolts
before connecting the piping to pump.
3. SUCTION PIPING:
3.1. Low static suction lift and short, direct, suction pip-
ing is desired. For suction lift over 10 feet and liquid
temperatures over 120 F, consult pump performance
curve for Net Positive Suction Head Required.
3.2. Suction pipe must be at least as large as the suction
connection of the pump. Smaller size will degrade
performance.
3.3. If larger pipe is required, an eccentric pipe reducer
(with straight side up) must be installed at the pump.
3.4. Installation with pump below source of supply
3.4.1. Install full flow isolation valve in piping for
inspection and maintenance.
Do not use suction isolation valve to
throttle pump.
3.6. Size of inlet from liquid source, and minimum sub-
mergence over inlet, must be sufficient to prevent air
entering pump through vortexing. See Figures 2-5.
3.7. Use 3-4 wraps of Teflon tape to seal threaded
connections.
Figure 2
Figure 5
4. DISCHARGE PIPING:
4.1. Arrangement must include a check valve located
between a gate valve and the pump. The gate valve
is for regulation of capacity, or for inspection of the
pump or check valve.
4.2. If an increaser is required, place between check valve
and pump.
4.3. Use 3-4 wraps of Teflon tape to seal threaded connec-
tions.
5. MOTOR-TO-PUMP SHAFT ALIGNMENT:
5.1. Close-Coupled Units
5.1.1. No field alignment necessary.
5.2. Frame-Mounted Units
5.2.1. Even though the pump-motor unit may have
a factory alignment, this could be disturbed in
transit and must be checked prior to running.
See Figure 6.
3.5. Installation with pump above source of supply
3.5.1. Avoid air pockets. No part of piping should be
3.5.2. All joints must be airtight.
3.5.3. Foot valve to be used only if necessary for
3.5.4. Suction strainer open area must be at least
4
higher than pump suction connection. Slope
piping upward from liquid source.
priming, or to hold prime on intermittent
service.
triple the pipe area.
5.2.2. Tighten all hold-down bolts before checking
the alignment.
5.2.3. If re-alignment is necessary, always move the
motor. Shim as required.
5.2.4. Parallel misalignment - shafts with axis paral-
CAUTION
CAUTION
CAUTION
CAUTION
lel but not concentric. Place dial indicator on
one hub and rotate this hub 360 degrees while
taking readings on the outside diameter of
the other hub. Parallel alignment occurs when
Total Indicator Reading is .005", or less.
5.2.5. Angular misalignment - shafts with axis con-
centric but not parallel. Place dial indicator
on one hub and rotate this hub 360 degrees
while taking readings on the face of the other
hub. Angular alignment is achieved when Total
Indicator Reading is .005", or less.
5.2.6. Final alignment is achieved when parallel and
angular requirements are satisfied with motor
hold-down bolts tight.
Always recheck both alignments after
making any adjustment.
9. DISASSEMBLY:
Complete disassembly of the unit will be described. Proceed only as far as required to perform the maintenance
work needed.
9.1. Turn off power.
9.2. Drain system. Flush if necessary.
9.3. Close-Coupled Units: Remove motor hold-down
bolts.
Frame-Mounted Units: Remove coupling, spacer, coupling guard and frame hold-down bolts.
9.4. Disassembly of Liquid End
9.4.1. Remove casing bolts (370).
9.4.2. Remove back pull-out assembly from casing
(100).
9.4.3. Remove impeller locknut (304).
6. ROTATION:
6.1. Correct rotation is right-hand (clockwise when
viewed from the motor end). Switch power on and
off quickly. Observe shaft rotation. To change rotation:
6.1.1. Single-phase motor: Non-reversible.
6.1.2. Three-phase motor: Interchange any two
power supply leads.
7. OPERATION:
7.1. Before starting, pump must be primed (free of air
and suction pipe full of liquid) and discharge valve
partially open.
Pumped liquid provides lubrication. If
pump is run dry, rotating parts will seize
and mechanical seal will be damaged. Do not operate
at or near zero flow. Energy imparted to the liquid is
converted into heat. Liquid may flash to vapor. Rotating
parts require liquid to prevent scoring or seizing.
7.2. Make complete check after unit is run under operat-
ing conditions and temperature has stabilized. Check
for expansion of piping. On frame-mounted units
coupling alignment may have changed due to the
temperature differential between pump and motor.
Recheck alignment.
Do not insert screwdriver between impel-
ler vanes to prevent rotation of closecoupled units. Remove cap at opposite end of motor. A
screwdriver slot or a pair of flats will be exposed. Using
them will prevent impeller damage.
9.4.4. Remove impeller (101) by turning counter-
clockwise when looking at the front of the
pump. Protect hand with rag or glove.
Failure to remove the impeller in a
counter-clockwise direction may damage
threading on the impeller, shaft or both.
9.4.5. With two pry bars 180 degrees apart and
inserted between the seal housing (184) and the
motor adapter (108), carefully separate the two
parts. The mechanical seal rotary unit (383)
should come off the shaft with the seal housing.
9.4.6. Push out the mechanical seal stationary seat
from the motor side of the seal housing.
9.5. Disassembly of Bearing Frame
9.5.1. Remove bearing cover (109).
9.5.2. Remove shaft assembly from frame (228).
9.5.3. Remove lip seals (138 and 139) from bearing
frame and bearing cover if worn and are being
replaced.
9.5.5. Use bearing puller or arbor press to remove
ball bearings (112 and 168).
8. MAINTENANCE:
8.1. Close-Coupled Unit. Ball bearings are located in and
are part of the motor. They are permanently lubricated. No greasing required.
8.2. Frame-Mounted Units
8.2.1. Bearing frame should be regreased every 2,000
hours or 3 month interval, whichever occurs
first. Use a #2 sodium or lithium based grease.
Fill until grease comes out of relief fittings, or
lip seals, then wipe off excess.
8.2.2. Follow motor and coupling manufacturers’
lubrication instructions.
8.2.3. Alignment must be rechecked after any mainte-
nance work involving any disturbance of the unit.
5
10. REASSEMBLY:
CAUTION
10.1. All parts should be cleaned before assembly.
10.2. Refer to parts list to identify required replacement
items. Specify pump index or catalog number when
ordering parts.
10.3. Reassembly is the reverse of disassembly.
10.3.1. Impeller and impeller locknut assembled
onto motor shaft with 10 ft-lbs of torque.
10.4. Observe the following when reassembling thebear-
ing frame.
10.4.1. Replace lip seals if worn or damaged.
10.4.2. Replace ball bearings if loose, rough or noisy
when rotated.
10.4.3. Check shaft for runout. Maximum permis-
sible is .002" T.I.R.
10.5. Observe the following when reassembling the
liquid-end.
10.5.1. All mechanical seal components must be
in good condition or leakage may result.
Replacement of complete seal assembly,
whenever seal has been removed, is good
standard practice.
It is permissible to use a light lubricant, such
as glycerin, to facilitate assembly. Do not
contaminate the mechanical seal faces with
lubricant.
10.5.2. Inspect casing O-ring (513) and replace if
damaged. This O-ring may be lubricated
with petroleum jelly to ease assembly.
10.5.3. Inspect guidevane O-ring (349) and replace
if worn.
Do not lubricate guidevane O-ring (349).
Insure it is not pinched by the impeller on
reassembly.
10.6. Check reassembled unit for binding. Correct as
required.
10.7. Tighten casing bolts in a star pattern to prevent O-
ring binding.
11. TROUBLE SHOOTING CHART:
MOTOR NOT RUNNING:
(See causes 1 thru 6)
LITTLE OR NO LIQUID DELIVERED:
(See causes 7 thru 17)
POWER CONSUMPTION TOO HIGH:
(See causes 4, 17, 18, 19, 22)
EXCESSIVE NOISE AND VIBRATION:
(See causes 4, 6, 9, 13, 15, 16, 18, 20, 21, 22)
PROBABLE CAUSE:
1. Tripped thermal protector
2. Open circuit breaker
3. Blown fuse
4. Rotating parts binding
5. Motor wired improperly
6. Defective motor
7. Not primed
8. Discharge plugged or valve closed
9. Incorrect rotation
10. Foot valve too small, suction not submerged,
inlet screen plugged
11. Low voltage
12. Phase loss (3-phase only)
13. Air or gasses in liquid
14. System head too high
15. NPSHA too low:
Suction lift too high or suction losses excessive.
Check with vacuum gauge.
16. Impeller worn or plugged
17. Incorrect impeller diameter
18. Head too low causing excessive flow rate
19. Viscosity or specific gravity too high
20. Worn bearings
21. Pump or piping loose
22. Pump and motor misaligned
6
NPE STANDARD REPAIR PARTS LIST
Item Materials of
No.
100 Casing
101 Impeller
108A Motor adapter with foot
108B Motor adapter less foot
108C Motor adapter with foot and flush
108D Motor adapter less foot with flush
123 Deflector BUNA-N
184A Seal housing std.
184B Seal housing with seal flush
Motor support 300 S.S.
240
Rubber channel Rubber
304 Impeller locknut AISI 316 S.S.
347 Guidevane AISI 316L S.S.
Viton (standard)
349 Seal-Ring, guidevane EPR
BUNA
370 Socket head screw, casing AISI 410 S.S.
371 Bolts, motor Steel/plated
383 Mechanical seal
408 Drain and vent plug, casing AISI 316 S.S.
Viton (standard)
412B O-Ring, drain plugs EPR
BUNA
Viton (standard)
513 O-Ring, casing EPR
BUNA
Description
Construction
AISI 316L
Stainless Steel
AISI 316L S.S.
MECHANICAL SEAL APPLICATION CHART
Item 383 Mechanical Seal (5⁄8” seal)
Rotary Stationary Elastomers Metal Parts Part No.
Viton 10K62
NOTE: Close coupled units supplied with ½ HP 1750 RPM, ½ - 3 HP Explosion
Proof or 5 HP motors, utilize motor adapter less foot and a footed motor.
NOTE: Frame mounted units (NPE-F) utilize the XS Power frame and motor
adapter less foot. For repair parts for the power frame refer to the XS-Power
frame repair parts page in the parts section of your catalog. To order the power
frame complete order item 14L61.
EPR 10K18
Carbon
Sil-Carbide
Sil-Carbide
EPR 10K81
Viton
316SS
10K55
NOTE: OPTIONAL SEAL FLUSH COMPONENTS
7
GOULDS WATER TECHNOLOGY LIMITED WARRANTY
This warranty applies to all water systems pumps manufactured by Goulds Water Technology.
Any part or parts found to be defective within the warranty period shall be replaced at no charge to the dealer during the warranty period. The warranty period shall exist for a
period of twelve (12) months from date of installation or eighteen (18) months from date of manufacture, whichever period is shorter.
A dealer who believes that a warranty claim exists must contact the authorized Goulds Water Technology distributor from whom the pump was purchased and furnish complete
details regarding the claim. The distributor is authorized to adjust any warranty claims utilizing the Goulds Water Technology Customer Service Department.
The warranty excludes:
(a) Labor, transportation and related costs incurred by the dealer;
(b) Reinstallation costs of repaired equipment;
(c) Reinstallation costs of replacement equipment;
(d) Consequential damages of any kind; and,
(e) Reimbursement for loss caused by interruption of service.
For purposes of this warranty, the following terms have these definitions:
(1) “Distributor” means any individual, partnership, corporation, association, or other legal relationship that stands between Goulds Water Technology and the dealer in pur-
chases, consignments or contracts for sale of the subject pumps.
(2) “Dealer” means any individual, partnership, corporation, association, or other legal relationship which engages in the business of selling or leasing pumps to customers.
(3) “Customer” means any entity who buys or leases the subject pumps from a dealer. The “customer” may mean an individual, partnership, corporation, limited liability com-
pany, association or other legal entity which may engage in any type of business.
THIS WARRANTY EXTENDS TO THE DEALER ONLY.
Xylem, Inc.
2881 East Bayard Street Ext., Suite A
Seneca Falls, NY 13148
Phone: (800) 453-6777
Fax: (888) 322-5877
www.xyleminc.com/brands/gouldswatertechnology
Goulds is a registered trademark of Goulds Pumps, Inc. and is used under license.
© 2012 Xylem Inc. IM013 Revision Number 9 July 2012
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