Graco Husky 2150e Use and care manual

Repair/Parts
Husky™ 2150e
Electric-Operated Diaphragm Pump 3A5131E
EN
2–Inch pumps with electric drive for fluid transfer applications.
Not approved for use in explosive atmospheres or hazardous locations unless otherwise stated. See
Approvals page for more information. For professional use only.
Important Safety Instructions
Read all warnings and instructions in this manual and in your Husky
2150e Operation manual. Save these instructions.
Maximum working pressure: 100 psi
(0.69 MPa, 6.9 bar)
See page 7 for approvals.
PROVEN QUALITY. LEADING TECHNOLOGY.

Contents
Related Manuals ................................................ 2
Warnings ........................................................... 3
Con guration Number Matrix............................... 6
Ordering Information........................................... 8
Troubleshooting.................................................. 9
Repair................................................................ 11
Pressure Relief Procedure............................ 11
Check Valve Repair ..................................... 11
Diaphragm Repair........................................ 13
Center Section Repair.................................. 15
Leak Sensor Repair ..................................... 20
Replace the Compressor.............................. 21
Torque Instructions............................................. 22
Torque sequence......................................... 22
Parts.................................................................. 24
Kits and Accessories.................................... 34
Technical Data ................................................... 35
elated Manuals
Manual Number Title
3A4068 Husky™ 2150e Electric-Operated Diaphragm Pump, Operation
3A5131E

Warnings
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-speci c
risks. When these symbols appear in the body of this manual or on warning labels, refer back to these
Warnings. Product-speci c hazard symbols and warnings not covered in this section may appear throughout
the body of this manual where applicable.
WARNING
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of the system can
cause electric shock.
• Turn off and remove power before disconnecting any cables and before servicing or installing
equipment. For cart-mounted models, unplug the power cord. For all other units, disconnect
power at the main switch.
• Connect only to grounded power source.
• All electrical wiring must be done by a quali ed electrician and comply with all local codes
and regulations.
• Wait ve minutes for capacitor discharge before opening equipment.
FIRE A D EXPLOSIO HAZARD
Flammable fumes, such as solvent and paint fumes, in work area canigniteorexplode.Paint
or solvent flowing through the equipment can cause static sparking. To help prevent re and
explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and
plastic drop cloths (potential static arc).
• Ground all equipment in the work area. See Grounding instructions.
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable
fumes are present.
• Use only grounded hoses.
• Stop operation immediately if static sparking occurs or you feel a shock . Do not use
equipment until you identify and correct the problem.
• Keep a working re extinguisher in the work area.
Static charge may build up on plastic parts during cleaning and could discharge and ignite
flammable vapors. To help prevent re and explosion:
• Clean plastic parts only in well ventilated area.
• Donotcleanwithadrycloth.
• Do not operate electrostatic guns in equipment work area.
3A5131E 3

Warnings
WARNING
PRESSURIZED EQUIPME T HAZARD
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin
and cause serious injury.
• Follow the Pressure Relief Procedure when you stop spraying/dispensing and before
cleaning, checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
EQUIPME T MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated
system component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data
in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete
information about your material, request Safety Data Sheet (SDS) from distributor or retailer.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modi cations may void agency approvals
and create safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traf c areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
PRESSURIZED ALUMI UM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious
chemical reaction and equipment rupture. Failure to follow this warning can result in death,
serious injury, or property damage.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon
solvents or fluids containing such solvents.
• Do not use chlorine bleach.
• Many other fluids may contain chemicals that can react with aluminum. Contact your material
supplier for compatibility.
43A5131E

Warnings
WARNING
THERMAL EXPA SIO HAZARD
Fluids subjected to heat in con ned spaces, including hoses, can create a rapid rise in pressure
due to the thermal expansion. Over-pressurization can result in equipment rupture and serious
injury.
• Openavalvetorelievethefluidexpansionduringheating.
• Replace hoses proactively at regular intervals based on your operating conditions.
PLASTIC PARTS CLEA I G SOLVE T HAZARD
Many solvents can degrade plastic parts and cause them to fail, which could cause serious
injury or property damage.
• Use only compatible water-based solvents to clean plastic structural or pressure-containing
parts.
•See Technical Data in this and all other equipment instruction manuals. Read fluid and
solvent manufacturer’s Safety Data Sheet (SDS) and recommendations.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin,
inhaled, or swallowed.
• Read Safety Data Sheet (SDS) to know the speci c hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable
guidelines.
BUR HAZARD
Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid
severe burns:
• Do not touch hot fluid or equipment.
PERSO AL PROTECTIVE EQUIPME T
Wear appropriate protective equipment when in the work area to help prevent serious injury,
including eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective
equipment includes but is not limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent
manufacturer.
3A5131E 5

Configuration Number Matrix
Configuration Number Matrix
Check the identi cation plate (ID) for the
Con guration Number of your pump. Use the
following matrix to de ne the components of your
pump.
Sample Configuration umber: 2150A-E,A04AA1TPTPTP- -
2150 AEA04 AA1 TP TP TP --
Pump
Model Wetted Section
Material
Drive Center
Section
Material
Gear Box
and Com-
pressor
Motor Fluid Covers and
Manifolds Seats Balls Diaphragms Manifold O-Rings
OTE: Some combinations are not possible. Please refer to Ordering Information, page 8 .
Pump Wetted Section
Material Drive TypeCenter Section Material Gearbox and Compressor Motor
2150 A
Aluminum
E
Electric
A
Aluminum
94
No Gearbox or
Compressor
A
Standard
Induction Motor
C
Conductive
Polypropylene
S
Stainless Steel
04
High Speed Gear
Ratio
C
ATEX Induction
Motor
F
PVDF
05
High Speed
Gear Ratio/120V
Compressor
D
Flameproof
Induction Motor
I
Cast Iron
06
High Speed
Gear Ratio/240V
Compressor
G
No Motor
P
Polypropylene
14
Mid Speed Gear
Ratio
S
Stainless Steel
15
Mid Speed
Gear Ratio/120V
Compressor
16
Mid Speed
Gear Ratio/240V
Compressor
24
Low Speed Gear
Ratio
25
Low Speed
Gear Ratio/120V
Compressor
26
Low Speed
Gear Ratio/240V
Compressor
63A5131E

Configuration Number Matrix
Fluid Covers and
Manifolds Seat Material Ball Material Diaphragm Material Manifold O-Rings
A1
Aluminum, npt
GE
Geolast
AC
Acetal
GE
Geolast
––
Model does
not use o-rings
A2
Aluminum, bsp
PP
Polypropy-
lene
CW
Polychloroprene
Weighted
PT
PTFE/EPDM
2–Piece
PT
PTFE
C2
Conductive
polypropylene,
end flange
PV
PVDF
GE
Geolast
SP
Santoprene
F2
PVDF, end
flange
SP
Santoprene
PT
PTFE
TP
TPE
P2
Polypropylene,
end flange
SS
316 Stainless
Steel
SD
440C Stainless
Steel
S1
Stainless steel,
npt
TP
TPE
SP
Santoprene
S2
Stainless steel,
bsp
TP
TPE
S5-1
Stainless steel,
center flange,
horizontal outlet
S5-2
Stainless steel,
center flange,
vertical outlet
I1
Cast Iron,
standard ports,
npt
I2
Cast Iron,
standard ports,
bsp
Approvals
✦ Aluminum, cast iron, conductive
polypropylene, and stainless steel pumps with
motor code Care certi ed to: II 2 G Ex h d IIB T3 Gb
✚ Aluminum, cast iron, conductive
polypropylene, and stainless steel pumps with
motor code Gare certi ed to: II2GExhIIBT3Gb
★ Motors coded Dare certi ed to: Class I, Div 1, Group D, T3B
Class II, Div 1, Group F & G, T3B
All Models (except gearbox and compressor
codes 05, 15, and 25, or motor code D)are
certi ed to:
3A5131E 7

Ordering Information
Ordering Information
To Find Your Nearest Distributor
1. Visit www.graco.com.
2. Click on Where to Buy and use the Distributor Locator.
To Specify the Configuration of a New Pump
Please call your distributor.
OR
Use the Online Diaphragm Pump Selector Tool at www.graco.com. Go to the Process Equipment Page.
To Order Rep acement Parts
Please call your distributor.
83A5131E

Troubleshooting
Troubleshooting
•FollowthePressure Relief Procedure, page 11,
before checking or servicing the equipment.
• Check all possible problems and causes before
disassembly.
Problem Cause Solution
Pump is running too fast, causing
cavitation before prime. Slow down the controller (VFD)
Center section has no air pressure,
or air pressure is too low. Apply air pressure to center section
per your application requirements.
Check valve ball is severely worn or
wedged in seat or manifold. Replace the ball and seat.
The pump has insuf cient suction
pressure. Increase the suction pressure. See the Operation manual.
Seat is severely worn. Replace the ball and seat.
Outlet or inlet is restricted. Remove the restriction.
Inlet ttings or manifolds are loose. Tighten.
Pump cycles but will not prime
and/or pump.
Manifold o-rings are damaged. Replace o-rings.
The center section is excessively
hot. The drive shaft is broken. Replace.
Check valve balls, seats, or o-rings
are worn. Replace.
Manifold screws or fluid cover
screws are loose. Tighten.
Pumpfailstoholdfluidpressureat
stall.
Diaphragm shaft bolt is loose Tighten.
Motor or controller is wired
improperly. Wire per manual.Pump will not cycle.
The leak detector (if installed) has
tripped. Check diaphragm for rupture or incorrect installation. Repair or
replace.
The motor is operating, but the
pump will not cycle. The jaw coupling between the motor and gearbox is not connected
properly.
Check the connection.
Suction line is clogged. Inspect; clear.
Check balls are sticky or leaking . Clean or replace.
Pump flow rate is erratic.
Diaphragm (or backup) ruptured. Replace.
Pump makes unusual noises. Pump is operating near or at stall
pressure. Adjust air pressure or slow the pump speed.
3A5131E 9

Troubleshooting
Problem Cause Solution
A ttingisloose. Tighten. Inspect thread sealant.
Loose or damaged o-rings or shaft
seal. Replace.
Air consumption is higher than
expected.
Diaphragm (or backup) ruptured. Replace.
Suction line is loose. Tighten.
Diaphragm (or backup) ruptured. Replace.
Loose manifolds, damaged seats or
o-rings. Tighten manifold bolts or replace seats or o-rings.
Air bubbles in fluid.
Loose diaphragm shaft bolt. Tighten.
Loose manifold screws or fluid cover
screws. Tighten.
Pump leaks fluid externally from
joints.
Manifold o-rings worn out. Replace o-rings.
A GFCI has tripped. Remove the controller from the
GFCI circuit.
Supply power is poor. Determine and x the source of the
power problem.
The controller faults or shuts down.
Operational parameters are
exceeded. See performance chart; ensure pump is operating within the
continuous duty range.
Inlet check clogged/improperly
installed Remove debris/install properly
Excessive motor regeneration fault
from VFD
Broken diaphragm bolt Replace bolt
OTE: For problems with a Variable Frequency Device (VFD), see your VFD manual.
10 3A5131E

Repair
epair
Pressure Re ief Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure
is relieved manually. To help prevent serious
injury from pressurized fluid, such as splashing
in the eyes or on skin, follow the Pressure Relief
Procedure when you stop pumping and before you
clean, check, or service the equipment.
1. Remove power from the system.
2. Open the dispensing valve, if used.
3. Open the fluid drain valve to relieve fluid
pressure. Have a container ready to catch the
drainage.
4. Back out regulator knob to bleed any internal
air pressure.
Check Va ve Repair
ools Required
• Torque wrench
• 10 mm socket wrench (plastic pumps)
• 13 mm socket wrench (metal pumps)
• O-ring pick
OTE: Kits are available for new check valve balls
and seats in a range of materials. O-ring and fastener
kits also are available.
OTE: To ensure proper seating of the check balls,
always replace the seats when replacing the balls.
Also, replace the o-rings every time the manifold is
removed.
Disassemble the Che k Valve
1. Follow the Pressure Relief Procedure, page 11.
Remove power from the motor. Disconnect all
hoses.
2. OTE for plastic pumps: Use hand tools until
thread-locking adhesive patch releases.
3. Use a 10 mm (plastic pump) or 13 mm (metal
pump)socketwrenchtoremovethemanifold
fasteners (5) and nuts (42; used only on stainless
steel models), then remove the outlet manifold
(3).
4. Remove the seats (6), balls (7), and o-rings (8) if
present.
OTE: Some models do not use o-rings (8).
5. Repeat for the inlet manifold (4), o-rings (8) if
present, seats (6), and balls (7).
To continue disassembly, see
Disassemble the Diaphragms, page 13.
Reassemble the Che k Valve
1. Clean all parts and inspect for wear or damage.
Replace parts as needed.
2. Reassemble in the reverse order, following all
notes in the illustration. Put the inlet manifold on
rst. Be sure the ball checks and manifolds are
assembled exactly as shown. The arrows (A) on
the fluid covers (2) must point toward the outlet
manifold (3).
3A5131E 11

Repair
Check valve assembly, aluminum model shown
1
Apply medium-strength (blue) thread locker. Torque to the value speci ed for your pump. See
Torque Instructions, page 22.
2
Arrow (A) must point toward outlet manifold
3
Notusedonsomemodels.
4
Stainless steel models include nuts (42).
1 3A5131E

Repair
Diaphragm Repair
Disassemble the Diaphragms
OTE: Diaphragm kits are available in a range of
materials and styles. See Parts section.
1. Follow the Pressure Relief Procedure, page 11.
Remove power from the motor. Disconnect all
hoses.
2. Remove the manifolds and disassemble
the ball check valves as explained in
Check Valve Repair, page 11.
3. Usea13mmsocketwrenchtoremovethebolts
(5) from the fluid covers, then pull the fluid covers
off of the pump.
4. To remove the diaphragms, the piston must
be moved fully to one side. If the pump is not
attached to the gearbox, turn the shaft by hand
to move the piston. If the pump is still attached
to the gearbox, loosen the screws and remove
the fan cover. Turn the fan by hand to rotate the
shaft to shift the piston to one side.
TIP: The air cover has 2 holes (H), one at the
9 o’clock position and another at the 3 o’clock
position (shown below). Use pin (131), placed in
either hole (H) as a brace for the wrench while
removing or installing diaphragm bolts.
a. Metal Pumps: Holda28mmwrenchonthe
wrench flats of the exposed piston shaft. Use
another wrench (10 mm hex key) on the shaft
bolt (13) to remove it. Then remove all parts
of the diaphragm assembly.
Plastic Pumps: Holda28mmwrenchon
the wrench flats of the exposed piston shaft.
Use a 24 mm socket or box end wrench on
the hex of the fluid side diaphragm plate to
removethecover. Thenusea10mmhex
keytoremovethebolt.
b. Rotate the drive shaft to move the piston
fully to one side. See instructions in step 4.
Repeat step a.
5. To continue with disassembly, see
Disassemble the Center Section, page 15.
Reassemble the Diaphragms
Follow all notes in the illustrations on page 15. These
notes contain
important information.
NOTICE
After reassembly, allow the thread locker to cure
for 12 hours, or per manufacturer’s instructions,
prior to operating the pump. Damage to the pump
will occur if the diaphragm shaft bolt loosens.
TIP: If you are also repairing or servicing the
center section (drive shaft, piston, etc.), see
Center Section Repair, page 15, before you put the
diaphragms back on.
1. Clean all parts and inspect for wear or damage.
Replace parts as needed. Be sure the center
section is clean and dry.
3A5131E 13

Repair
2. All Other Diaphragms-Metal Pumps
a. Thoroughly clean or replace the diaphragm
bolt (13). Install the o-ring (34).
b. Assemblethefluidsideplate(9),the
diaphragm (11), the backup diaphragm (12,
if present), and the air side diaphragm plate
(10) on the bolt exactly as shown.
c. Clean the female threads of the piston
shaft with a wire brush dipped in solvent to
remove any residual thread locker. Apply
thread-locking primer and allow it to dry.
d. Apply medium-strength (blue) thread locker
to the threads of the bolt.
e. Hold a 28 mm wrench on the wrench flats
of the piston shaft. Screw the bolt onto the
shaft and torque to 100 ft-lb (135 N•m).
f. Rotate the drive shaft to move the piston fully
to one side. See instructions in step 4 of
Disassemble the Diaphragms, page 13.
g. Repeat to install the other diaphragm
assembly.
3. All Other Diaphragms-Plastic Pumps
a. Thoroughly clean or replace the diaphragm
bolt (13). Install the o-ring (34).
b. Assemblethefluidsideplate(9),the
diaphragm (11), the backup diaphragm (12,
if present), and the air side diaphragm plate
(10) on the bolt exactly as shown.
c. Clean the female threads of the piston
shaft with a wire brush dipped in solvent to
remove any residual thread locker. Apply
thread-locking primer and allow it to dry.
d. Apply medium-strength (blue) thread locker
to the threads of the bolt.
e. Holda28mmwrenchonthewrenchflats
of the piston shaft. Screw the bolt onto the
shaft and torque to 100 ft-lb (135 N•m).
f. Install an o-ring (13b) and plug (13a) on the
fluid plate.
g. Rotate the drive shaft to move the piston fully
to one side. See instructions in step 4 of
Disassemble the Diaphragms, page 13.
h. Repeat to install the other diaphragm
assembly.
4. Attachthefluidcovers.Thearrowoneachfluid
cover must point toward the outlet manifold.
Apply medium-strength (blue) thread locker to the
bolt threads. See Torque Instructions, page 22,
to tighten.
5. Reassemble the check valves and manifolds.
See Reassemble the Check Valve, page 11.
6. Restore motor cooling fan cover and pin (131) to
their original locations.
1
Rounded side faces diaphragm.
2–Piece (PT, TP, SP, and GE) Models
2
Apply medium-strength (blue) thread
locker to the threads.
3
AIR SIDE markings on diaphragm must
face the center housing.
5
Torque to 100 ft-lb (135 N•m) at 100
rpm maximum.
6
Apply primer to the female threads.
Allow to dry.
NOTICE
After reassembly, allow the thread locker
to cure for 12 hours, or per manufacturer’s
instructions, prior to operating the pump.
Damage to the pump will occur if the diaphragm
shaft bolt loosens.
14 3A5131E

Repair
Center Section Repair
Disassemble the Center Se tion
See the illustrations on page 18.
1. Follow the Pressure Relief Procedure, page 11.
Remove power from the motor. Disconnect all
hoses.
2. Remove the manifolds and
check valve parts as directed in
Disassemble the Check Valve, page 11.
3. Remove the fluid covers and
diaphragms as directed in
Disassemble the Diaphragms, page 13.
TIP: Clamp the gear box bracket (15) to the
bench. Leave the pump connected to the motor.
4. Use a 10 mm hex wrench to remove 4 bolts (117).
Pull the pump off the alignment housing (116).
TIP: It may be necessary to tap the pump with a
rubber mallet to disengage the coupler.
5. Use a 5/16 hex wrench to remove the plug (124).
Usea30mmsocketwrenchtoremovethe
bearing bolt (106) and the o-ring (108) from the
top.
6. Turn the shaft so the groove on the shaft is at the
top, in line with the alignment markings.
7. Usea3/4–16bolttopushoutthedriveshaft
assembly (112). You can also use the bearing
bolt (106), but remove the bearing (107) rst. Be
surethatthegrooveonthedriveshaftremains
aligned with the markings in the center section.
OTE: Remove the bolt after the drive shaft is
freed.
NOTICE
Proper alignment is essential. Do not apply
more than about 10 in-lb (1.1 N•m) of torque.
Excessive torque could strip the housing
thread. If you encounter resistance, check
alignment or contact your distributor.
8. The shaft coupler (113) might come out with
the drive shaft assembly. If not, remove from
gearbox (118).
9. Remove the seal cartridge (110), the o-ring (109)
and the radial seal (111) from the drive shaft
assembly.
10. Slide the piston assembly (102) out of the center.
11. Only remove the alignment housing (116) if
needed.Usea10mmhexwrenchtoremove4
bolts (120). Pull the alignment housing off the
gearbox (118).
12. Leave the gearbox coupler (114) attached to the
gearbox shaft (118) unless it is damaged. If you
need to remove it, a bearing puller must be used.
3A5131E 15

Repair
Reassemble the Center Se tion
1. Clean and dry the center housing (101), the
center of the piston (102) and the drive shaft
(112).
2. Inspect the piston and center section bearings for
excessive wear and replace if needed. Grease
the piston as shown and install it in the center
sectionwiththeslotonthetop,inlinewiththe
alignment markings in the center section.
3. Install the o-ring (108) and apply medium-strength
(blue) thread locker to the bearing bolt (106)
and screw into the center section. Be sure that
the bearing (107) is in the slot on the piston, as
shown. Be sure that the piston moves freely.
Torque the bolt (106) to 15–25 ft-lb (20–34 N•m).
4. Be sure the sealing surface of the drive shaft
(112) is clean. Install the seal cartridge (110) and
the radial seal (111) on the drive shaft. The lips
on the radial seal (111) must face I toward the
center. Inspect seal lip for damage. Replace
if necessary.
5. Install o-ring (109) to the center housing (101).
6. Apply anti-seize lubricant on the mating edges of
thedriveshaft,asshownintheillustration,page
17.
7. Center the piston in the housing and install
the drive shaft assembly (112) into the center
housing (101) with the groove facing up.
8. Inspect the shaft coupler (113) for wear and
replace if needed. Install on the drive shaft.
9. If removed, install the alignment housing to the
center section. Apply medium-strength (blue)
thread locker and install the housing screws
(117). Torque to 130–160 in-lb (15–18 N•m).
10. If removed, install the gearbox coupler (114)
on the gearbox (118) shaft. Use an M12 x 30
bolt and a large washer inserted into the hole in
the shaft to press the coupler into position. The
coupler is in proper position when it is flush with
the end of the shaft.
11. Be sure the gearbox coupler (114) is aligned
properly. Turn by hand if needed. Connect the
pump to the gearbox assembly, engaging the
couplers.
12. Apply medium-strength (blue) thread locker and
install the gearbox screws (120). Torque to
130–160 in-lb (15–18 N•m).
13. Be sure o-ring (127) is on the plug (124). Install
the plug and torque to 15–25 ft-lb (20–34 N•m).
14. See Reassemble the Diaphragms, page 13,and
Reassemble the Check Valve, page 11.
16 3A5131E

Repair
1
Apply medium-strength (blue) thread
locker to threads.
2
Torque to 15–25 ft-lb (20–34 N•m).
3
Lips must face I toward the center.
4
Apply anti-seize lubricant liberally on
the radial surfaces of the drive shaft
assembly.
5
Install the drive shaft assembly with
the groove facing up.
6
Tighten screws in a crisscross
pattern, 5 turns at a time, to engage
the coupler evenly. Torque to
130–160 in-lb (15–18 N•m).
7
Apply lubricant to inner mating
surface.
3A5131E 17

Repair
Repla e Center Bearing
OTE: Follow this procedure only if you suspect
that the center bearing is damaged. You will need
Center Section Repair Kit 25B433. You also will
need Bearing Tool Kit 25B434 and bearing puller kit
17J718.
1. Follow all steps in
Disassemble the Center Section, page 15.
2. Use arbor press and tool to push out center
sleeve.
3. Place the center housing (101) in a vise with the
bearing (D) side on the bottom.
4. Place the repair tool on the housing.
5. Use tool (A) and bearing puller (B) to remove the
bearing (D).
6. Useanarborpresstoinstallthenewbearing(D)
into the center housing (101). Press the bearing
to the shoulder in the center housing.
7. Use an arbor press and the press- t tool and
alignmentringtoinstallthesleeve.Ensurethat
thegrooveonthesleevealignswiththepinin
the center housing, as shown below. Install the
sleeve flush with the center housing.
8. Follow all steps in
Reassemble the Center Section, page 16.
18 3A5131E

Repair
Dis onne t the Motor and Gearbox
OTE: Normally, the motor remains connected to the
gearbox. Disconnect the motor only if you suspect
that the motor or gearbox must be replaced.
TIP: Clamp the gearbox bracket (15) to the bench.
Start at step 1 for ATEX or Flameproof motors.
Standard AC motors (04A,05A,or06A) are of one
piece with the gearbox, so begin with step 3.
OTE: Use a hoist and sling to remove motor weight
from the gearbox during removal.
1. Usea3/4in.socketwrenchtoremove4screws
(122).
2. Pull the motor (121) straight off of the gearbox
(118).
3. Usea3/4in.socketwrenchtoremove4bolts
(17) and nuts (18, if present). Lift the gear box off
of the bracket. OTE: IfyouhaveanACmotor
with gearbox, lift the whole unit off of the bracket.
3A5131E 19

Repair
Leak Sensor Repair
OTE: Aprevi
ous design of the leak sensor exists. If
your leak sensor contains a jam nut, refer to manual
3A5131A for repair instructions.
The leak sensor can be replaced or re-positioned.
When properly positioned, the two arrows imprinted
on two of the flat surfaces of the leak sensor hex
head are vertical and pointing down.
Leak Sensor Testing
Testing the continuity of the leak sensor is possible
to ensure proper operation. If continuity testing
indicates that the leak sensor is not functional, a
replacement kit, 25B435, can be ordered separately.
1. Follow the Pressure Relief Procedure, page 11.
Remove power from the motor.
2. To test the leak sensor without removing from
the pump:
a. Note the connection locations of the leak
sensor wires within the VFD or other
monitoring device, then disconnect the leak
sensorwires.
b. Use an ohmmeter attached to the leak
sensor leads to test the conductivity of the
leak sensor. Continuity is af rmed by a
reading of 0-5 ohms.
c. Loosen the leak sensor bushing 1/2 turn
(leak sensor arrows point up).
d. Use an ohmmeter attached to the leak sensor
leads to test the conductivity of the leak
sensor. An open circuit should be indicated.
Normal operation position shown by dark
float. Lighter float line indicates the open
circuit position.
e. If the continuity tests result indicate that
the leak sensor is not functioning properly,
proceed to step 3. Otherwise, tighten the
bushing to its original position so that the
arrows on the leak sensor point down. Attach
the removed leak sensor wires to the point
where they were disconnected from the VFD
or other monitoring device.
f. Apply air pressure to the pump and use a
soapy solution around the bushing to ensure
an air tight seal. If air bubbles appear, it will
be necessary to return to the steps above for
air pressure relief and removing the bushing
from the pump. Apply new thread sealer
on the bushing and install in the pump so
that the leak sensor is properly positioned.
Repeat this step to test for air leakage around
the bushing.
3. Remove andreplacetheleaksensoratthe
pump:
a. Note the connection locations of the leak
sensor wires within the VFD or other
monitoring device, then disconnect the leak
sensor wires.
b. Remove the leak sensor and bushing from
the pump center section.
c. Apply thread tape or paste to the bushing
threads and screw nger tight into the pump.
d. To ensure a watertight seal, apply Loctite
®
425 Assure™ threadlocker supplied with the
leak sensor kit to the leak sensor threads
and screw the leak sensor into the bushing.
e. Verify that the leak sensor was properly
oriented in the pump so that the arrows
imprinted on the leak sensor hex head are
vertical positioned with the arrows pointing
down. It may be necessary to further tighten
both the bushing and leak sensor to achieve
proper positioning.
f. Use an ohmmeter attached to the leak
sensor leads to test the conductivity of the
leak sensor. Continuity is af rmed by a
reading of 0-5 ohms. Attach the leak sensor
wires to the VFD or other monitoring device.
g. Apply air pressure to the pump and use a
soapy solution around the bushing to ensure
an air tight seal. If air bubbles appear, it will
be necessary to return to the steps above for
air pressure relief and removing the bushing
from the pump. Apply new thread sealer
on the bushing and install in the pump so
that the leak sensor is properly positioned.
Repeat this step to test for air leakage around
the bushing.
0 3A5131E