Declaration of Conformity ......................................................47
2
SAFETY INSTRUCTIONS
DANGER
WARNING
CAUTION
WARNING
Hazardous fluids
can cause fire,
burns or death.
NOTICE: INSPECT UNIT FOR DAMAGE AND
REPORT ALL DAMAGE TO CARRIER
IMMEDIATELY.
DESCRIPTION and SPECIFICATIONS
The AG-Flo series are single stage, end suction, centrifugal
pumps for general liquid transfer, booster applications, irrigation and general service pumping. Pumps are available in three
different materials of construction: all iron and bronze-fitted.
Pump impellers are fully enclosed, key driven and held in
position by an impeller bolt and washer. Casings are full volute
in design with replaceable wear rings.
Dependant on the pump size, the suction and discharge
connections will be threaded or flanged. Shafts are protected
with stainless steel shaft sleeves.
Close-coupled units have NEMA standard JM or JP motors
with C-face mounting and key driven shaft extension. SAE
drive units bolt directly to the engine flywheel housing for SAE
sizes 1, 2, 3, 4 or 5. Optional elastomer element couplings are
available for 6½, 7½, 8, 10, 11½ and 14 inch flywheels. Frame
mounted units can be coupled to motors through a spacer
coupling, or belt driven. SAE bearing frames can be provided
with splined or keyed shaft assemblies.
TO AVOID SERIOUS OR FATAL PERSONAL INJURY
OR MAJOR PROPERTY DAMAGE, READ AND FOLLOW
ALL SAFETY INSTRUCTIONS IN ThE MANUAL AND ON
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.
THIS MANUAL IS INTENDED TO ASSIST IN THE
INSTALLATION AND OPERATION OF THIS UNIT.
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.
Engineering Data
Maximum Liquid Temperature:
212º F (100º C) – standard seal or packing
250º F (120º C) – Optional high temp. seal
Maximum Working Pressure (Fluid temperature dependant):
– NPT connections, 175 PSI (1207 kPa)
– 125# ANSI flanged connections, 175 PSI (1207 kPa)
Maximum Suction Pressure: 100 PSI (689.5 kPa)
Starts per Hour: 20, evenly distributed
Impeller Shaft Ø (in.)
Size Suction Discharge
1½ x 2-6 (H) 2" NPT 1½" NPT •
1 x 2-7 2" NPT 1" NPT •
2½ x 3-7 3" NPT 2½" NPT •
3 x 4-7 4" Flange 3" Flange •
1 x 2-8 2" NPT 1" NPT •
1½ x 2-8 2" NPT 1½" NPT •
2 x 2-5 2" NPT 2" NPT •
2½ x 2½-5 2½" NPT 2½" NPT •
3 x 3-5 3" NPT 3" NPT •
4 x 4-5 4" Flange 4" Flange •
5 x 5-6 5" Flange 5" Flange •
2½ x 3-8 3" NPT 2½" NPT • •
3 x 4-8 4" Flange 3" Flange • •
4 x 5-8 5" Flange 4" Flange • •
1½ x 2-10 2" NPT 1½" NPT • •
2½ x 3-10 3" Flange 2½" Flange • •
3 x 4-10 4" Flange 3" Flange • •
4 x 6-10 6" Flange 4" Flange •
2½ x 3-13 3" Flange 2½ " Flange •
3 x 4-13 4" Flange 3" Flange •
4 x 6-13 6" Flange 4" Flange •
6 x 8-13 8" Flange 6" Flange • •
8 x 10-13 10" Flange 8" Flange •
4 x 6-16 6" Flange 4" Flange •
7
⁄8 11⁄4 15⁄
8
Installation
LOCATION
• Locate the pump as near liquid source as practical; below
level of liquid for automatic repriming capability.
• Allow adequate space for servicing and ventilation. Protect
the unit from weather and water damage due to rain,
flooding or freezing temperatures.
• Protect the pump and piping from freezing temperatures.
• Allow adequate space around the unit for service and
ventilation.
CLOSE-COUPLED UNITS
• Units may be installed horizontally, inclined or vertically with
the motor above the pump.
• The motor feet MUST be bolted to a substantial surface
(horizontal or vertical) that is capable of complete and rigid
support for the pump and motor. For AG-Flo pumps with
15⁄8" Ø shaft, the motor adapter feet must also be bolted to
the supportive surface.
• For vertical operation, the motor should be fitted with a drip
cover or otherwise protected against liquid entering the motor (rain, spray, condensation, etc.)
NOTICE: DO NOT INSTALL WITH MOTOR
BELOW PUMP. ANY LEAKAGE OR CONDENSATION WILL AFFECT THE MOTOR.
3
Sleeve
Washer
Lug
Top of foundation –
clean and wet down
Grout
Leveling wedges or shims – left in place
BaseGrout hole
(1/4”)
Finished grouting
(1/2 to 3/4”)
Allowance
for leveling
Wood
frame
FRAME-MOUNTED UNITS
600
500
400
300
200
100
0
150016001700180019002000210022002300
RPM
TORQUE (LBS/FT)
180
178
176
174
172
170
168
166
164
162
160
HP
• A flat 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.
Figure 1
• It is recommended that the baseplate 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 wedges to level unit.
Level or plumb suction and discharge connections.
• 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.
• Tighten foundation bolts finger tight and build dam around
foundation. Pour grout under bedplate making sure the areas
under the pump and motor feet are filled 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.
• Allow grout to harden for 48 hours before tightening 4
foundation bolts.
SAE – Engine Driven Pumps
The SAE engine drive bearing frame is designed to bolt directly
to the flywheel housing for engines with an SAE no. 1, 2,
3, 4 or 5 mount. The pump shaft extension is sized for use
with couplings bolted directly to the flywheel. Goulds Pumps
optional couplings are sized for 6½", 7½", 8", 10", and 14"
flywheels. Although other flywheel mount couplings may be
used, it is recommended that the Goulds Pumps coupling be
used to ensure long and trouble-free operation from your
Goulds Pump.
REQUIREMENTS FOR PROPER OPERATION
Pump End:
When delivering the required capacity (GPM) to the system
piping, the pump must add the amount of Head required
by the system at the capacity. The operating head-capacity
point should be as close as possible to the highest efficiency
line shown on the performance curve, and must be below the
head-capacity line labeled “maximum” RPM. The maximum
operaton RPM for the pump is determined by bearing life, or
in some cases, by the pressure limits of the pump. Suction and
discharge openings are NPT tapped for standard pipe, or faced
and drilled per ANSI B16.1, class 125 for standard flanges as
4
indicated. Maximum working pressure for class 30 cast iron,
per ANSI B16.1, is 175 PSI.
Internal combustion engines are variable speed and variable
power machines. The power output depends on the engine
speed (RPM) and will be reduced when operating altitude,
and/or the air temperature increases. When driving the pump
at the RPM required to deliver water into the system piping,
the engine must operate within the Engine Manufacturers
minimum and maximum RPM limits. The power output to
supply the pump power demand must not exceed the continuous power rating of the engine, after derating for all power
consuming engine accessories, and adjustmaner for installation
site altitude and air temperature.
DRIVE-TRAIN SIZING (BHP)
The BHP Equation is: (Flow x TDH) / 3960 x Eff.) Note: For internal combustion units the BHP calculation must
be de-rated for the following conditions:
• 20% for continuous duty
• 5% for right-angle drive
• 3% for each 1,000 feet above sea level
• 1% for each 10º F above 60º F.
DRIVE-TRAIN SIZING (TORQUE)
Other than sizing an engine for BHP, torque calculations also
are required for proper sizing. Typically the horsepower and
torque rating do not follow the same relationship throughout
the usable range of a diesel engine (Figure 2). The equation for
torque (lbs/ft) is (5250 x BHP) / RPM.
Figure 2: HP (◆) vs. Torque (■)
VERIFY MATCH OF PUMP END TO ENGINE
SAE Bracket Size:
Engine drive pumps are available to fit engines having a standard SAE 5 through SAE 1 flywheel housing.
For a new engine, the engine supplier can provide the SAE
housing number.
For an existing engine, the flywheel housing bore and bolt
circle can be measured and compared against the standard SAE
housing dimensions listed in Table 1, to identify the housing
SAE number.
• Measure the flywheel housing bore (A), and the bolt circle
(B), as accurately as possible with a tape measure (to the
nearest 1/32 inch).
• Count the number of threaded holes in the flywheel housing
(C). Test the threaded holes with a bolt, to determine the
thread series.
• Compare the measured dimensions (A), (B), and (C) against
Table 1, to determine the SAE number of the flywheel housing, to be sure it matches the SAE number of your pump.
Flywheel
SAE Flywheel Housing Size
Housing
1 2 3 4 5
Dimensions
A 201⁄8175⁄8161⁄8141⁄4123⁄8B 207⁄8183⁄8167⁄815 131⁄8
C No. 12 12 12 12 8
Size
7
⁄16-14 3⁄8-16
3
⁄8-16 3⁄8-16
3
⁄8-16
Table 1
Figure 3
INSTALLATION
• The pump may be installed horizontally, with the discharge
rotated to any position allowed by the casing bolt pattern
(13). It is recommended that the discharge be located
horizontally, above the suction.
• The casing must be supported on all pumps by a rigid
support which is anchored to the unit base or foundation.
• It is recommended that this support is bolted to the motor
adapter ring using 2 or more of the casing bolts (13). It is
likely that longer bolts will be required for the additional
support thickness. Use SAE grade 5 bolts, torqued as
indicated in this manual.
• For pumps with 15⁄8" Ø shafts, it is recommended that the
pump is supported beneath the two feet cast into the motor
adapter (3). These feet must be bolted to the support.
PUMP TO ENGINE ASSEMBLY (SPLINE COUPLING)
Preparation for Assembly of Pump on Engine
• Clean face and register fit of flywheel housing and flywheel
as necessary to remove all grease, dirt, or rust (and all traces
of rust preventative) which would interfere with installation
of pump and/or prevent correct alignment. If flywheel is fitted with a pilot bearing for a transmission shaft, remove and
discard. The pilot bearing is not required for installation of
the pump end, and could interfere with the pump shaft.
• Examine shaft spline closely. Use a file, if necessary, to
remove any burrs that would prevent coupling from sliding
freely onto the shaft.
• Slide the coupling onto shaft until it is stopped against the
shaft (refer to page 5 for straight shaft installation).
• Measure the distance from the engine side of the flywheel
coupling adapter ring to the mounting face of the pump
bracket. Refer to Figure 4 below, Dimension “A”.
• Next, measure depth from face of flywheel housing on
engine, to face on flywheel against which coupling will be
bolted. Refer to Figure 4 below, Dimension “B”.
• Pump measurement must be less than engine measurement
or axial interference will result in thrust force on engine
crank shaft bearings. Simply stated, Dimension “A” must be less than Dimension “B”.
FLYWHEEL COUPLING
• The flywheel coupling transmits power from the engine
flywheel to the pump shaft. The maximum power that a
coupling can safely handle is shown by a rating number, “R”,
which is listed in the coupling dimensions tables.
• When selecting a flywheel coupling for a pump and engine,
first determine the power rating that the pump will demand.
On the pump performance curve, find the RPM and BHP
values required to produce the spplication head-capacity
point.
• Divide the BHP by the RPM, then multiply the result times
100. The result will be the demand number for the pump.
For example, a 20BFSAE1AO can deliver 800 GPM at 270
feet Total Head when running at 1800 RPM. The power
required by the pump will be 75 BHP. The demand number
will be: (75 / 1800) x 100 = 4.16
• Next, select a coupling that can safely transmit the power,
and which will fit the flywheel dimensions. For a coupling to
be suitable, it must have an “R” rating number GREATER
THAN the pump demand number. In the above example,
the minimum coupling “R” number whould be 5.
• Torsional compatibility of the engine, pump, and coupling is
the responsibility of the assembler. Goulds Pumps will supply
data for the pump and coupling for use by the assembler for
a torsional analysis.
NOTE: If the flywheel is fitted with a pilot bearing pressed
into a bore at the center, remove it to avoid interference with
the pump shaft.
Figure 4Figure 5
5
FLYWHEEL FOR INDUSTRIAL TYPE OVERCENTER CLUTCHES
• Figure 6 shows the hollowed-out appearance of the flywheels made for use with overcenter type clutch power
take-off assemblies.
• These flywheels will have a recessed bore machined into the
face, and a set of tapped holes, which will be used to attach
the coupling to the flywheel. Dimensions are governed by
an SAE standard and are listed in Tables 1A and 1B, Figure
3. The “clutch size” shown in the table is the nominal clutch
facing diameter for Drive Ring Type Overcenter Clutches.
OTHER FLYWHEELS
• Some engines are fitted with flywheels especially machined
for coupling to other kinds of machinery (electrical generators, torque converters, etc.), and require nonstandard
flywheel couplings. These may be purchased from third party
vendors or suppliers.
* R = Coupling Rating Max.
Coupling Rating = (Rated horsepower x 100) / Rated RPM
Size E BC F G H R* Catalog Spline
Qty.
2.28 CD616
2.28 CD716
2.28 CD816
1.625-
1.624Ø
3
⁄8 x 3⁄
Keyway
16
• For Goulds Pumps straight shaft keyed couplings – Ensure
that the coupling hub set screw is backed out enough to
ensure clearance for the shaft key during assembly.
• Mount the coupling assembly to the engine flywheel using
the bolts provided torqued as follows in a crossing sequence:
• Place the pump shaft key into the pump shaft (122) and align
the shaft to the coupling. Slide the pump into the coupling
until the engine adapter ring (340) contacts the engine
flywheel housing.
INSTALLATION OF COUPLING ON FLYWHEEL
Flywheel Coupling Overcenter Type:
• These couplings are aligned concentrically with the flywheel
by register fit on the flywheel.
• Be sure to remove all preservatives from the engine’s flywheel.
• Fit the coupling into the flywheel. Align the bolt holes and
engage coupling with register fit on flywheel. Tap coupling
with a soft heavy hammer, if necessary, to be sure that it is
seated flat against flywheel. Secure coupling tightly to flywheel with capscrews and lockwasher.
INSTALLATION OF PUMP ON ENGINE
• Lift pump with suitable lifting apparatus and align pump shaft
with coupling. End of pump shaft has a pilot diameter which
epermits wasy engagement of pump shaft into coupling.
• Reach into pump suction opening and rotate impeller slightly
Hazardous machinery
can cause personal
injury or death.
WARNING
Parallel
Angular
H min.
D
D
H min.
DD
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
1 2 3 4 5 6 7 8 9 1011 121314 1516
V
V = Velocity in feet per second
= GPM x 0.321
Area
GPM x 0.4085
D
2
until the shaft will engage the coupling. Verify that there is
no gap between bracket and flywheel housing faces. Rotate
pump as necessary to align bracket holes with engine. Install
capscrews and bolt pump end securely to engine.
NOTE: If any interference, or incompatibility of parts is
detected during installation, DO NOT proceed with
assembly. Direct the problem to your nearest Goulds
Pumps distributor.
• Mount the pump to the engine using the bolts and lockwashers provided, torqued as follows in a crossing sequence:
• Bolt motor adapter (3) to the rigid support described above.
Coupling Alignment
FAILURE TO DISCONNECT AND
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
SEVERE PERSONAL INJURY.
FRAME-MOUNTED UNITS ONLY
• Alignment MUST be checked prior to running. See Figure 7.
• 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 10 ft. (3 m) and liquid temperatures
over 120° F (49° C), consult pump performance 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 necessary for
priming or to hold prime during intermittent duty.
• The suction strainer or suction bell MUST be at least
3 times the suction pipe diameter area.
• Insure that the size and minimum submergence over suc-
tion inlet is sufficient to prevent air from entering pump
through a suction vortex. See Figures 8 through 11.
• Tighten all hold-down bolts before checking alignment.
• If realignment is necessary, always move the motor. Shim
• Parallel misalignment, shafts with axis parallel but not
• Angular misalignment, shaft with axis concentric but not par-
• Final alignment is achieved when parallel and angular re-
NOTICE: ALWAYS RECHECK BOTH ALIGNMENTS
AFTER MAKING ANY MECHANICAL
ADJUSTMENTS.
• Piping should be no smaller than pump’s discharge and
Figure 7
as required.
concentric. Place dial indicator on one hub and rotate this
hub 360° while taking readings on the outside diameter of
the other hub. Parallel alignment is achieved when reading is
0.010" (0.254 mm) TIR, or less.
allel. Place dial indicator on one hub and rotate this hub 360°
while taking readings on the face of the other hub. Angular
alignment is achieved when reading is 0.020" (0.508
mm) TIR, or less.
quirements are satisfied with motor hold-down bolts tight.
Piping
suction connections and kept as short as possible, avoiding
unnecessary fittings to minimize friction losses. See Table 1.
Figure 8 Figure 9
Figure 10 Figure 11
PIPING – DISCHARGE
• Install a check valve suitable to handle the flow, liquids and
to prevent backflow. 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.
7
Wiring and Grounding
WARNI NG
Hazardous voltage
can shock, burn or
cause death.
WARNING
Hazardous
voltage
Hazardous machinery
can cause personal
injury or death.
WARNING
WARNI NG
Hazardous voltage
can shock, burn or
cause death.
Extreme heat can
cause personal injury
or property damage.
WARNING
Hazardous fluids can
cause personal injury
or property damage.
WARNING
WARNI NG
Hazardous voltage
can shock, burn or
cause death.
Hazardous pressure
can cause personal
injury or property
damage.
CAUTION
Install, ground and wire according
to local and National Electrical Code
Requirements.
Install an all leg electrical power
disconnect switch near the pump.
Disconnect and lockout electrical
power before installing or servicing
the pump.
Electrical supply MUST match
pump’s nameplate specifications. Incorrect voltage can cause fire, damage
motor and void the warranty.
Motors without built-in protection 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.
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 conditions,
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 following 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.
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. For frame mounted units, switch power
on and off quickly to observe rotation. On close coupled
units, 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 OR SAE 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.
8
FAILURE TO RELIEVE SYSTEM
PRESSURE AND DRAIN SYSTEM
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
IF PIPING HAZARDOUS OR TOXIC
FLUIDS, SYSTEM MUST BE FLUSHED
PRIOR TO PERFORMING SERVICE.
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
• Bearing frame with 7⁄8" Ø shaft has greased for life bearings.
No regreasing is possible or necessary.
• Bearing frames with 11⁄4" Ø and 15⁄8" Ø shafts and SAE drive
bearing frames should be regreased every 2,000 hours or
at a three 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.
• Follow motor or engine and coupling manufacturer’s
lubrication instructions.
• Recheck alignment.
SEASONAL SERVICE
• To REMOVE pump from service, remove drain plug and
drain all unprotected piping.
• To RETURN pump to service, replace drain plug using
Teflon™ tape or equivalent on male threads.
• Reconnect suction line if removed, examine union and repair
if necessary.
• Refer to OPERATION section of manual.
Disassembly
• Follow ALL warnings and instructions in the “MAINTE-
NANCE” section of this manual.
• Close-coupled units: Remove motor hold-down bolts.
3. Remove casing wear ring (4) if excessively worn.
NOTICE: DO NOT INSERT SCREWDRIVER BETWEEN
IMPELLER VANES TO PREVENT ROTATION.
4. On close-coupled units, remove motor end plug or cover
to expose screwdriver slot or flats on end of motor shaft.
5. While restraining shaft with an appropriate tool (close-
coupled units) or with a strap wrench (frame-mounted
units) remove impeller bolt (6). Impeller bolt may need
to be heated with torch to remove. Discard.
NOTICE: EXERCISE CAUTION WHEN HANDLING
HOT IMPELLER BOLT.
NOTICE: FOR SAE DRIVE UNITS, REMOVE IMPELLER
NUT SET SCREW (22A) PRIOR TO REMOVING IMPELLER NUT (22). IMPELLER
SET SCREW AND IMPELLER NUT MAY NEED
TO BE HEATED TO BE REMOVED.
6. Remove impeller washer (7).
7. Insert two pry bars, 180° apart, between impeller (2) and
seal housing (3). CAREFULLY pry off impeller.
8. Remove impeller key (8).
9. Remove seal housing bolts (14) and seal housing (3)
pulling with it the mechanical seal assembly. Discard seal
assembly and seal housing o-ring (9). For packed box
pumps see “PACKED BOX INSTRUCTIONS”.
10. Remove adapter (108).
11. Inspect shaft sleeve (11). If badly scored, remove by
heating with torch. Discard.
12. Push out the mechanical seal stationary seat from the
seal housing. Discard.
13. On units equipped, remove seal housing wear ring (5)
if excessively worn.
DISASSEMBLY OF BEARING FRAME OR
SAE BEARING FRAME
1. Remove deflector (123) from shaft.
2. Remove bearing cover (134).
3. Remove shaft assembly from frame.
4. Remove lip seals (138, 139) from bearing frame (228) and
bearing cover (134) if worn. Discard.
5. Remove retaining ring (361).
6. Use bearing puller or arbor press to remove ball
bearings (112, 168).
Reassembly
• All parts should be cleaned before assembly.
NOTICE: O-RING SHOULD BE REPLACED AFTER ANY
DISASSEMBLY OF UNIT.
BEARING FRAME
1. Replace lip seals if removed.
2. Replace ball bearings if loose, rough or noisy when rotated.
3. Check shaft (122) for runout. Maximum permissible is
0.002" (0.05 mm) TIR.
4. Refer to the “MAINTENANCE” section of this manual for M-group bearing frame regreasing instructions.
LIQUID END
1. Inspect shaft removing any debris or burrs.
2. Treat shaft with LOCQUIC® Primer “T”, or equivalent,
following manufacturer’s instructions carefully.
3. When replacing shaft sleeve, spray new shaft sleeve’s bore
with LOCQUIC® Primer “T”, or equivalent. Let parts dry
and then apply LOCTITE® #262 on the same surfaces.
Slide new sleeve over shaft with a twisting motion, wipe
off excess. Let cure according to instructions.
NOTICE: MECHANICAL SEAL MUST BE REPLACED
WHENEVER SEAL HAS BEEN REMOVED.
FOLLOW SEAL MANUFACTURER’S INSTRUCTIONS CAREFULLY. FOR PACKED
BOX PUMPS SEE “PACKED BOX INSTRUCTIONS”.
4. Replace seal housing wear ring, if removed.
5. For mechanical seal pumps, stationary seal seat may be
dipped in water to ease installation. Place stationary seal
seat squarely into seal housing bore. Cover the polished
face of the seat with a thin piece of cardboard or paper
towel. Press seat firmly into bore using a round piece of
plastic or wood that disperses the force over the entire
seal face. NOTE: If mechanical seal is supplied with a spring retainer, remove and discard the retainer.
6. Place adapter, concave face pointing up, over motor
shaft and lower it onto the motor.
7. Replace seal housing o-ring. This o-ring may be lubricated
with water or glycerin to ease in installation. Install seal
housing on adapter. Exercise care in that the motor shaft
does not dislodge or damage seal seat.
8. Fully and squarely install the rotary assembly of seal
against the stationary seat.
NOTICE: REPLACE IMPELLER BOLT AND WASHER
WHENEVER IMPELLER IS REMOVED.
9. Install impeller key in shaft keyway. Mount impeller on
shaft and push until it bottoms. Hold in place. For SAE
units, apply LOCTITE 271 to the impeller bore, keyway
and shaft. Mount impeller on shaft and push until it
bottoms. Hold in place.
10. Install new impeller washer. Impeller washer not used for
SAE units..
9
11. Apply LOCTITE® #271 or equivalent, to new impeller bolt
CORRECTWRONG
threads and tighten to:
3⁄8"-16 bolts 20 lbs.-ft. (27 N.m)
½"-13 bolts 38 lbs.-ft. (51 N.m)
Impeller bolt not used for SAE units.
12. For SAE units apply LOCTITE® #271 to the external
threads of the shaft and internal threads of the impeller
nut (22). Tighten impeller nut to the following:
16. Check reassembled unit for binding by rotating shaft with
appropriate tool from motor end.
17. If rubbing exists, loosen casing bolts and proceed with
tightening sequence again.
18. Replace motor hold-down bolts and motor end plug or
cover on close-coupled units.
19. Replace coupling, spacer, coupling guard and frame
hold-down bolts on frame-mounted units.
NOTICE: ALWAYS RECHECK BOTH ALIGNMENTS
AFTER MAKING ANY ADJUSTMENTS.
20. Refer to the “COUPLING ALIGNMENT” section of this manual to realign shaft.
21. Assembly is complete.
Packed Box
1. Make sure stuffing box is free of foreign materials and
clean before beginning packing of packed box. Refer to
Sectional Assembly in the repair parts section.
2. Take special care during installation of packing rings
because they are die-formed. To install, twist the ring
sideways just enough to fit it around the shaft sleeve.
DO NOT ATTEMPT TO PULL RINGS STRAIGHT
OUT. See Figure 12.
Figure 12
3. Install the two piece Teflon lantern ring supplied as shown
in figure 13. Note: two pieces make one ring. Notches on
ring must face each other, but alignment is not necessary.
Teflon Lantern Ring
Figure 13
4. Install the packing rings and lantern ring in the following
sequence to pack the packed box. Install two rings of
packing, then the lantern ring, followed by the final three
rings of packing. Install each ring separately and firmly
seat. The use of a wooden split bushing is recommended
to accomplish this. See Figure 14. Use gland to jack the
bushing and ring into the box. Stagger joints in each ring
90°. Make sure the flush tap in the packed box lines up
with the center of the lantern ring. Any extra rings are
spares.
WOODEN “SPLIT BUSHING”
GLAND
STUFFING
BOX
SHAFT
Figure 14
5. Tighten gland nuts evenly, but not tight. When the pump
is started, slowly tighten the gland nuts until the leak rate
is between 40 and 60 drops per minute. A grease lubricant
can be used when the pumpage contains abrasive particles
or for a suction lift condition.
REMOVAL OF PACKED BOX
• Follow these steps to remove the packing from the
packed box.
1. Remove gland assembly.
2. With a “packing hook” remove packing.
3. Insert a wire hook into the ring on the outer edge to
remove the lantern ring.
4. Clean the packed box.
PRIME SAFE ARRANGEMENT (Optional – Shaft of 11⁄4" Ø and
15⁄8" Ø Only)
• The Prime Safe arrangement can be provided with grease or
an oiler feed lubrication.
1. The grease gland (24) will have the letters "G" and "O"
stamped on the outside diameter and have two 1⁄8" NPT
connections for mounting a grease feeder or oiler.
10
2. For grease feed applications, the grease gland is assembled
23
26
24
WARNI NG
Hazardous voltage
can shock, burn or
cause death.
with the “G” stamp in the 12 o' clock position. The grease
feeder (23) will mount in the grease gland at a 30 degree
angle from the horizontal. This is done to gain access to the
grease fitting located on the grease feeder. The lip seal (26)
mounted in the grease gland will be assembled as shown in
Figure 15.
3. For oiler feed applications, the grease gland is assembled
with the “O” stamp in the 12 o' clock position. The two
1
⁄8" NPT connections on the grease gland will be located on
the horizontal, which is to ensure proper function of the
oiler. The lip seal (26) is to be mounted in the reverse or
opposite direction as shown in Figure 10.
4. The mounting of a grease feeder or oiler may require
additional pipe extensions and/or fittings that will be
provided from the factory as needed.
5. The grease feeder (23) will come with three springs (blue,
red and silver). The use of the different springs will be
varied depending on the operating temperature and the
lubricant (grease) to be used.
Grease Feeder Spring Size
Operating Temperature No. 1 Grease No. 2 Grease No. 3 Grease
-10ºF (-23ºC) to 40ºF (4ºC) SILVER RED —
-40ºF (-40ºC) to 110ºF (43ºC) SILVER SILVER RED
-110ºF (-79ºC) to 200ºF (93ºC) BLUE SILVER SILVER
Use SAE 30W oil for oiler application.
Troubleshooting Guide
DISCONNECT AND LOCKOUT
ELECTRICAL POWER BEFORE
ATTEMPTING ANY MAINTENANCE.
FAILURE TO DO SO CAN CAUSE A
SHOCK, BURN OR DEATH.
SYMPTOM
MOTOR NOT RUNNING
See Probable Cause – 1 through 5
LITTLE OR NO LIQUID DELIVERED
See Probable Cause – 6 through 13
EXCESSIVE POWER CONSUMPTION
See Probable Cause – 3, 13, 14, 15
EXCESSIVE NOISE and VIBRATION
See Probable Cause – 3, 6, 7, 10, 12, 14, 16, 17
PROBABLE CAUSE
1. Motor thermal protector tripped
2. Open circuit breaker or blown fuse
3. Impeller binding
4. Motor improperly wired
5. Defective motor
6. Pump is not primed, air or gases in pumpage
7. Discharge, suction plugged or valve closed
8. Incorrect rotation (3 phase only)
9. Low voltage or phase loss
10. Impeller worn or plugged
11. System head too high
12. NPSHA too low – Excessive Suction lift or losses
13. Incorrect impeller diameter
14. Discharge head too low – excessive flow rate
15. Fluid viscosity, specific gravity too high
16. Worn bearing
17. Pump, motor or piping loose
Figure 15
11
Repair Parts Series 3656/3756
SAE M & L
Replaces 6 & 7
4 6 7 8 2 5 9 10 3 11
13
3
2222A
1617 18
12 1
19
20
21
Packed Box Arrangement
LIQUID END COMPONENTS
Item No. Description Material
1 Casing Cast Iron
2 Impeller Cast iron or Sil-brass*
3 Adapter Cast Iron
4 Wear ring (casing) Cast iron or bronze*
5** Wear ring (seal housing)
6 Impeller bolt
7 Impeller washer
AISI Type 300
stainless steel
8 Impeller key Steel
9 Seal housing o-ring (optional materials) BUNA-N/EPR/Viton
10 Mechanical seal Consult factory
11 Shaft sleeve AISI Type 300
stainless steel
12 Drain plug – ¼ or 3⁄8 NPT
13 Hex head cap screw (casing to adapter) Zinc plated steel
14 Hex head cap screw (adapter to motor/frame)
15 Hex head cap screw (Adapter to seal housing)
16 Lantern ring Teflon™
17 Packing, 5 rings Teflon™ impregnated
18 Gland AISI 300SS
19 Shaft sleeve
20 Gland stud
Power Frame (7⁄8" Ø Shaft)Power Frame (11⁄4" Ø Shaft)
370C
361
168
399
138
123
139
371L
112122193123
399
138
193134
193
139
112122193123
193134
399
138
122A
Power Frame (15⁄8" Ø Shaft)SAE Power Frame – Keyed
– Spline (Optional)
361
399
327C
138
501N
370C
340
134
112193168
13
ITT
Ag./Irrigation
This warranty applies to all water systems pumps manufactured by Goulds Pumps.
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 Pumps 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 Pumps 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 Pumps and
the dealer in purchases, 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 company, association or other legal entity which may engage in any type of business.
GOULDS PUMPS LIMITED WARRANTY
THIS WARRANTY EXTENDS TO THE DEALER ONLY.
Goulds Pumps and the ITT Engineered Blocks Symbol are
registered trademarks and tradenames of ITT Industries Inc.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.