Xylem Goulds 3642 User manual

Models 3642/3742
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
INSTRUCTION MANUAL
IM007R07

2
TABLE OF CONTENTS
SUBJECT PAGE
Safety Instructions...................................................................................................................................................................3
Description and Specications .............................................................................................................................................3
Engineering Data....................................................................................................................................................................3
Installation
Location................................................................................................................................................................................3
Foundation...........................................................................................................................................................................3
Frame-Mounted ..................................................................................................................................................................3
Piping
Suction..................................................................................................................................................................................4
Discharge.............................................................................................................................................................................4
Wiring and Grounding...........................................................................................................................................................4
Coupling Alignment...............................................................................................................................................................4
Rotation....................................................................................................................................................................................5
Operation.................................................................................................................................................................................5
Maintenance............................................................................................................................................................................5
Disassembly
Liquid End............................................................................................................................................................................6
Bearing Frame.....................................................................................................................................................................6
Reassembly
Bearing Frame.....................................................................................................................................................................6
Liquid End............................................................................................................................................................................6
Repair Parts..............................................................................................................................................................................7
Troubleshooting......................................................................................................................................................................8
Limited Warranty.....................................................................................................................................................................8
Declaration of Conformity .................................................................................................................................................. 29
MODELS
3642 3742
1 x 1¼ - 5 1 x 1¼ - 5
1¼ x 1½ - 5 1¼ x 1½ - 5
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:
OWNER’S INFORMATION

3
Starts per Hour: 20 - Evenly distributed
INSTALLATION
Location:
Locate pump as near liquid source as practical; below
level of liquid for repriming capability.
Allow adequate space for servicing and ventilation.
Protect the unit from weather and water damage due
to rain, ooding or freezing temperatures.
Close - Coupled Units
Units may be installed horizontally, inclined or
vertically with the motor above the pump.
NOTICE: DO NOT INSTALL WITH MOTOR BELOW
PUMP. ANY LEAKAGE OR CONDENSATION
WILL AFFECT THE MOTOR.
Foundation:
A at and substantial foundation surface MUST be
provided to avoid distortion and/or strain when
tightening the foundation bolts. A rubber mounting is
acceptable to reduce noise or excessive vibration.
Tighten motor hold-down bolts BEFORE connecting
piping to pump.
Frame-Mounted Units:
Figure 1
Bedplate must be grouted to a foundation with solid
footing. Refer to Figure 1.
Place unit in position on wedges located at four
points, two below approximate center of driver and
two below approximate center of pump. Adjust wedg-
es to level unit. Level or plumb suction and discharge
anges.
Make sure bedplate is not distorted and nal coupling
alignment can be made within the limits of movement
of motor and by shimming, if necessary.
Tighten foundation bolts nger tight and build dam
around foundation. Pour grout under bedplate mak-
ing sure the areas under the pump and motor feet
SAFETY INSTRUCTIONS
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.
This product can expose you to
chemicals including Lead which is
known to the state of California to cause cancer or
birth defects or other reproductive harm. For more
information go to: www.P65Warnings.ca.gov.
DESCRIPTION and SPECIFICATIONS:
The 3642 (closed-coupled) and 3742 (frame-mounted)
are single stage, end suction, centrifugal pumps for
water circulation, booster service, liquid transfer,
spraying systems, jockey pump and general service
pumping. Pumps are available in three different ma-
terials of construction: all iron, bronze-tted and all
bronze.
Pump impellers are enclosed design for high efcien-
cy, threaded directly on the motor shaft.
Close-coupled units have NEMA standard frame mo-
tors with C-face mounting and threaded shaft exten-
sions. Frame mounted units can be coupled to motors
through a spacer coupling, or belt driven.
ENGINEERING DATA
Maximum Liquid Temperature:
212º F (100º C) – standard seal
250º F (120º C) – Optional high temp. seal
Maximum Working Pressure: 125 psi
3642/3742
Model Suction Discharge
1 x 1¼ - 5 1¼” NPT 1” NPT
1¼ x 1½ - 5 1½” NPT 1¼” NPT
DANGER
WARNING
CAUTION
WARNING
Hazardous fluids can
cause fire, burns
or death.
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
Grout
WARNING

4
WIRING AND GROUNDING
Install, ground and wire ac-
cording to local and National
Electrical Code Requirements.
Install an all leg disconnect
switch near the pump.
Disconnect and lockout electri-
cal power before installing or
servicing the pump.
Electrical supply MUST match pump’s name-
plate specications. Incorrect voltage can cause
re, damage to the motor and voids the war-
ranty.
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 copper wire to motor and ground. The
ground wire MUST be at 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 ELECTRICAL POWER CAN CAUSE
SHOCK, BURNS OR DEATH.
COUPLING ALIGNMENT
FAILURE TO DISCONNECT AND
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE SEVERE
PERSONAL INJURY.
are lled solid. Allow grout to harden 48 hours before
fully tightening foundation bolts.
Tighten pump and motor hold-down bolts before
aligning shaft or connecting the piping to pump.
PIPING
Piping should be no smaller than pump’s discharge
and suction connections and kept as short as possible,
avoiding unnecessary ttings to minimize friction
losses.
All piping MUST be independently supported and
MUST NOT place any piping loads on the pump
NOTICE: DO NOT FORCE PIPING INTO PLACE
AT PUMP SUCTION AND DISCHARGE
CONNECTIONS.
All pipe joints MUST be airtight.
Piping – Suction
For suction lifts over 15 ft. (4.6 m), consult pump per-
formance curve for net positive suction head required
(NPSHR).
If a pipe size larger than pump suction is required,
an eccentric pipe reducer, with the straight side up,
MUST be installed at the pump suction.
If pump is installed below the liquid source, install
a gate valve in the suction for pump inspection and
maintenance.
NOTICE: DO NOT USE THE GATE VALVE TO
THROTTLE PUMP. THIS MAY CAUSE LOSS
OF PRIME, EXCESSIVE TEMPERATURES
AND DAMAGE TO PUMP, VOIDING
WARRANTY.
If the pump is installed above the liquid source, the
following MUST be provided:
To avoid air pockets, no part of the piping should
be above the pump suction connection.
Slope the piping upward from liquid source.
Use a foot valve or check valve ONLY if neces-
sary for priming or to hold prime during intermit-
tent duty.
The suction strainer or suction bell MUST be at
least three times the suction pipe diameter area.
Insure that the size and minimum submergence
over suction inlet is sufcient to prevent air from
entering pump through a suction vortex. See Fig-
ures 2 through 5.
Piping – Discharge
Install a check valve suitable to handle the ow, liq-
uids and to prevent backow. After the check valve,
install an appropriately sized gate valve to be used to
regulate the pump capacity, pump inspection and for
maintenance.
When required, pipe increaser should be installed
between the check valve and the pump discharge.
Figure 4 Figure 5
H min.
DD
H min.
D D
1.5D
min.
3.0D
min.
H min.
D min.
2
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
H = Min. Submergence in feet
H
12345678910111213141516V
V = V elocity in feet per second
= GPM x 0.321
Area
PM x 0.4085
D2
Figure 2 Figure 3
WARNING
Hazardous voltage
can shock, burn or
cause death.
WARNING
Hazardous
voltage
Hazardous machinery
can cause personal
injury or death.
WARNING

5
Alignment MUST be checked prior to running. See
Figure 6.
Tighten all hold-down bolts before checking the align-
ment.
If realignment is necessary, always move the motor.
Shim as required.
Figure 6
Parallel misalignment (shafts with axis parallel but not
concentric). Place dial indicator on one hub and rotate
this hub 360º while taking readings on the outside di-
ameter of the other hub. Parallel alignment is achieved
when reading is 0.005” (0.127 mm) TIR, or less.
Angular misalignment (shaft with axis concentric but
not parallel). Place dial indicator on one hub and
rotate this hub 360º while taking readings on the face
of the other hub. Angular alignment is achieved when
reading is 0.005” (0.127 mm) TIR, or less.
Final alignment is achieved when parallel and angular
requirements are satised with motor hold-down bolts
tight.
NOTICE: ALWAYS RECHECK BOTH ALIGNMENTS
AFTER MAKING ANY MECHANICAL
ADJUSTMENTS.
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. Remove motor end plug
or cover to observe rotation.
To reverse three phase motor rotation, interchange
any two power supply leads.
OPERATION
DO NOT OPERATE FRAME
MOUNTED UNITS WITHOUT SAFETY
GUARDS IN PLACE OR SEVERE
PERSONAL INJURY MAY RESULT.
SPLASHING OR IMMERSING OPEN
DRIP PROOF MOTORS IN FLUID
CAN CAUSE FIRE, SHOCK, BURNS
OR DEATH.
OPERATION AT OR NEAR ZERO
FLOW CAN CAUSE EXTREME HEAT,
PERSONAL INJURY OR PROPERTY
DAMAGE.
NOTICE: NO NOT RUN PUMP DRY OR SEAL
DAMAGE WILL RESULT.
After stabilizing the system at normal operating condi-
tions, check the piping. If necessary, adjust the pipe
supports.
On frame-mounted units, coupling alignment may
have changed due to the temperature differential
between pump and motor. Recheck alignment follow-
ing procedures and hazard warnings in “COUPLING
ALIGNMENT” section of this manual.
MAINTENANCE
FAILURE TO DISCONNECT AND
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
SHOCK, BURNS OR DEATH.
FAILURE TO RELIEVE SYSTEM
PRESSURE AND DRAIN SYSTEM
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
Close-Coupled Units:
Bearings are located in and are part of the motor. For
lubrication information, refer to motor manufacturer’s
instructions.
Frame-Mounted Units:
Pump bearing frames have greased for life bearings.
No lubrication is possible or necessary.
Follow motor and coupling manufacturer’s lubrication
instructions.
WARNING
Hazardous voltage
can shock, burn or
cause death.
Extreme heat can
cause personal injury
or property damage.
WARNING
WARNING
Hazardous voltage
can shock, burn or
cause death.
Hazardous pressure can
cause personal injury
or property damage.
CAUTION
Parallel
Angular
Hazardous machinery
can cause personal
injury or death.
WARNING