Installation, Operation,
and Maintenance Manual
Series e-90 Close-Coupled In-Line
Centrifugal Pumps
Table of Contents
Introduction and Safety..................................................................................................................2
Introduction..................................................................................................................................2
Safety.............................................................................................................................................2
Safety terminology and symbols........................................................................................... 2
User safety................................................................................................................................ 3
Environmental safety...............................................................................................................4
Product warranty......................................................................................................................5
Transportation and Storage.......................................................................................................... 6
Inspect the delivery.....................................................................................................................6
Inspect the package................................................................................................................6
Inspect the unit........................................................................................................................ 6
Pump lifting.................................................................................................................................. 6
Long-term storage.......................................................................................................................6
Product Description........................................................................................................................8
General description.................................................................................................................... 8
Operational specifications......................................................................................................... 8
Table of Contents
Installation........................................................................................................................................9
Preinstallation...............................................................................................................................9
Pump location guidelines.......................................................................................................9
Piping checklist......................................................................................................................10
Typical installation.................................................................................................................11
Connect the wiring....................................................................................................................11
Commissioning, Startup, Operation, and Shutdown...............................................................12
Preparation for startup............................................................................................................. 12
Check the rotation.................................................................................................................12
Lubrication requirements.........................................................................................................13
Prime the pump.........................................................................................................................13
Start the pump...........................................................................................................................13
Pump operation precautions...................................................................................................14
Shut down the pump................................................................................................................ 14
Maintenance..................................................................................................................................15
Disassembly............................................................................................................................... 15
Disassembly precautions......................................................................................................15
Drain the pump......................................................................................................................15
Typical cross section............................................................................................................. 16
Remove the seal assembly for all sizes...............................................................................16
Pre-assembly inspections.........................................................................................................17
Replacement guidelines.......................................................................................................17
Reassembly................................................................................................................................ 17
Reassemble the seal assembly............................................................................................ 17
Capscrew torque values.......................................................................................................18
Dealer servicing ....................................................................................................................18
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 1
Introduction and Safety
Introduction and Safety
Introduction
Purpose of this manual
The purpose of this manual is to provide necessary information for:
• Installation
• Operation
• Maintenance
CAUTION:
Read this manual carefully before installing and using the product. Improper use of the
product can cause personal injury and damage to property, and may void the warranty.
NOTICE:
Save this manual for future reference, and keep it readily available at the location of the
unit.
Requesting other information
Special versions can be supplied with supplementary instruction leaflets. See the sales
contract for any modifications or special version characteristics. For instructions,
situations, or events that are not considered in this manual or in the sales documents,
please contact the nearest Xylem representative.
Always specify the exact product type and identification code when requesting technical
information or spare parts.
Safety
WARNING:
• The operator must be aware of safety precautions to prevent physical injury.
• Any pressure-containing device can explode, rupture, or discharge its contents if it is
over-pressurized. Take all necessary measures to avoid over-pressurization.
• Operating, installing, or maintaining the unit in any way that is not covered in this
manual could cause death, serious personal injury, or damage to the equipment. This
includes any modification to the equipment or use of parts not provided by Xylem. If
there is a question regarding the intended use of the equipment, please contact a
Xylem representative before proceeding.
• Do not change the service application without the approval of an authorized Xylem
representative.
CAUTION:
You must observe the instructions contained in this manual. Failure to do so could result
in physical injury, damage, or delays.
Safety terminology and symbols
About safety messages
It is extremely important that you read, understand, and follow the safety messages and
regulations carefully before handling the product. They are published to help prevent
these hazards:
2 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
Hazard levels
• Personal accidents and health problems
• Damage to the product
• Product malfunction
Hazard level Indication
DANGER:
A hazardous situation which, if not avoided, will result in
death or serious injury
Introduction and Safety
Hazard categories
WARNING:
CAUTION:
NOTICE:
Hazard categories can either fall under hazard levels or let specific symbols replace the
ordinary hazard level symbols.
Electrical hazards are indicated by the following specific symbol:
Electrical Hazard:
These are examples of other categories that can occur. They fall under the ordinary
hazard levels and may use complementing symbols:
• Crush hazard
• Cutting hazard
• Arc flash hazard
A hazardous situation which, if not avoided, could result
in death or serious injury
A hazardous situation which, if not avoided, could result
in minor or moderate injury
• A potential situation which, if not avoided, could
result in undesirable conditions
• A practice not related to personal injury
User safety
General safety rules
These safety rules apply:
• Always keep the work area clean.
• Pay attention to the risks presented by gas and vapors in the work area.
• Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash
hazards.
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
Safety equipment
Use safety equipment according to the company regulations. Use this safety equipment
within the work area:
• Hard hat
• Safety goggles, preferably with side shields
• Protective shoes
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 3
Introduction and Safety
• Protective gloves
• Gas mask
• Hearing protection
• First-aid kit
• Safety devices
Electrical connections
Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local regulations. For more information about
requirements, see sections dealing specifically with electrical connections.
Precautions before work
Observe these safety precautions before you work with the product or are in connection
with the product:
• Provide a suitable barrier around the work area, for example, a guard rail.
• Make sure that all safety guards are in place and secure.
• Make sure that you have a clear path of retreat.
• Make sure that the product cannot roll or fall over and injure people or damage
• Make sure that the lifting equipment is in good condition.
• Use a lifting harness, a safety line, and a breathing device as required.
• Allow all system and pump components to cool before you handle them.
• Make sure that the product has been thoroughly cleaned.
• Disconnect and lock out power before you service the pump.
• Check the explosion risk before you weld or use electric hand tools.
NOTICE:
Never operate a unit unless safety devices are installed. Also see specific information
about safety devices in other chapters of this manual.
property.
Wash the skin and eyes
Follow these procedures for chemicals or hazardous fluids that have come into
contact with your eyes or your skin:
Condition Action
Chemicals or hazardous fluids in
eyes
Chemicals or hazardous fluids on
skin
Environmental safety
The work area
Always keep the station clean.
Waste and emissions regulations
Observe these safety regulations regarding waste and emissions:
• Appropriately dispose of all waste.
• Handle and dispose of the processed liquid in compliance with applicable
environmental regulations.
• Clean up all spills in accordance with safety and environmental procedures.
• Report all environmental emissions to the appropriate authorities.
1. Hold your eyelids apart forcibly with your fingers.
2. Rinse the eyes with eyewash or running water for at least 15 minutes.
3. Seek medical attention.
1. Remove contaminated clothing.
2. Wash the skin with soap and water for at least 1 minute.
3. Seek medical attention, if necessary.
4 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
Electrical installation
Recycling guidelines
Product warranty
Coverage
Introduction and Safety
WARNING:
Radiation Hazard. Do NOT send the product to Xylem if it has been exposed to any
nuclear radiation.
For electrical installation recycling requirements, consult your local electric utility.
Always follow local laws and regulations regarding recycling.
Xylem undertakes to remedy defects in products from Xylem under these conditions:
• The faults are due to defects in design, materials, or workmanship.
• The faults are reported to a local sales and service representative within the warranty
period.
• The product is used only under the conditions that are described in this manual.
• The monitoring equipment that is incorporated in the product is correctly connected
and in use.
• All service and repair work that is done by Xylem authorized personnel.
• Genuine Xylem parts are used.
• Only Ex-approved spare parts and accessories that are authorized by an Ex-approved
Xylem representative are used in Ex-approved products.
Limitations
Warranty claim
The warranty does not cover defects that are caused by these situations:
• Deficient maintenance
• Improper installation
• Modifications or changes to the product and installation that are made without
consulting a Xylem authorized representative
• Incorrectly executed repair work
• Normal wear and tear
Xylem assumes no liability for these situations:
• Bodily injuries
• Material damages
• Economic losses
Xylem products are high-quality products with expected reliable operation and long life.
However, should the need for a warranty claim arise, contact your local sales and service
representative.
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 5
Transportation and Storage
Transportation and Storage
Inspect the delivery
Inspect the package
1. Inspect the package for damaged or missing items upon delivery.
2. Note any damaged or missing items on the receipt and freight bill.
3. File a claim with the shipping company if anything is out of order.
If the product has been picked up at a distributor, make a claim directly to the
distributor.
Inspect the unit
1. Remove packing materials from the product.
Dispose of all packing materials in accordance with local regulations.
2. Inspect the product to determine if any parts have been damaged or are missing.
3. If applicable, unfasten the product by removing any screws, bolts, or straps.
For your personal safety, be careful when you handle nails and straps.
4. Contact the local sales representative if there is any issue.
Pump lifting
WARNING:
• Assembled units and their components are heavy. Failure to properly lift and support
this equipment can result in serious physical injury and/or equipment damage. Lift
equipment only at the specifically identified lifting points. Lifting devices such as
eyebolts, slings, and spreaders must be rated, selected, and used for the entire load
being lifted.
• Crush hazard. The unit and the components can be heavy. Use proper lifting methods
and wear steel-toed shoes at all times.
In order to lift the entire pump, use slings placed around the unit as shown.
Figure 1: Proper lifting method
Long-term storage
If the unit is stored for more than 6 months, these requirements apply:
• Store in a covered and dry location.
• Store the unit free from heat, dirt, and vibrations.
• Rotate the shaft by hand several times at least every three months.
6 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
Transportation and Storage
Treat bearing and machined surfaces so that they are well preserved. Refer to the drive
unit and coupling manufacturers for their long-term storage procedures.
For questions about possible long-term storage treatment services, please contact your
local sales and service representative.
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 7
Product Description
Product Description
General description
The Series e-90 in-line mounted centrifugal pump is a close-coupled pump.
This pump is available for pipe sizes that range from 1 in to 3 inches.
Pump application
WARNING:
California Proposition 65 warning! This product contains chemicals known to the state of
California to cause cancer and birth defects or other reproductive harm.
You can use this pump for these types of applications:
• Hydronic heating and cooling
• Potable hot water (all bronze construction only)
• Cooling towers
• Machinery cooling
• Pressure boosting
• Industrial fluid transfer
• Refrigeration and heat exchanger circulation
This pump is for indoor use only.
B&G recommends that you use all bronze constructed pumps for pumping potable water.
For other applications, contact your local sales and service representative.
Operational
Mechanical seal specifications
specifications
Materials of Construction EPR carbon/silicon carbide EPR SiC/SiC Viton carbon/silicon carbide
Standard/optional Standard Optional Optional
Operating temperature
range
pH range 7.0–11.0 7.0–12.0 7.0–12.0
Maximum glycol/water
concentration
Maximum suction pressure Suction Pressure + TDH must not exceed MWP
-20˚F to 250˚F (-29˚C to
121˚C)
50/50% 60/40% 50/50%
0˚F to 250˚F (-18˚C to
121˚C)
0˚F to 250˚F (-18˚C to
121˚C)
8 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
Installation
Preinstallation
Precautions
WARNING:
• When installing in a potentially explosive environment, make sure that the motor is
properly certified.
• You must earth (ground) all electrical equipment. This applies to the pump
equipment, the driver, and any monitoring equipment. Test the earth (ground) lead to
verify that it is connected correctly.
NOTICE:
Supervision by an authorized Xylem representative is recommended to ensure proper
installation. Failure to do so may result in equipment damage or decreased performance.
Pump location guidelines
Installation
WARNING:
Assembled units and their components are heavy. Failure to properly lift and support this
equipment can result in serious physical injury and/or equipment damage. Lift equipment
only at the specifically identified lifting points. Lifting devices such as eyebolts, slings, and
spreaders must be rated, selected, and used for the entire load being lifted.
Guideline Explanation/comment
Keep the pump as close to the liquid source as
practically possible.
Make sure that the space around the pump is
sufficient.
If you require lifting equipment such as a hoist or
tackle, make sure that there is enough space above
the pump.
Protect the unit from weather and water damage due
to rain, flooding, and freezing temperatures.
Do not install and operate the equipment in closed
systems unless the system is constructed with
properly-sized safety devices and control devices.
Take into consideration the occurrence of unwanted
noise and vibration.
If the pump location is overhead, undertake special
precautions to reduce possible noise transmission.
When possible, locate the pump below the fluid
level.
This minimizes the friction loss and keeps the suction piping
as short as possible.
This facilitates ventilation, inspection, maintenance, and
service.
This makes it easier to properly use the lifting equipment and
safely remove and relocate the components to a safe location.
This is applicable if nothing else is specified.
Acceptable devices:
• Pressure relief valves
• Expansion tanks
• Pressure controls
• Temperature controls
• Flow controls
If the system does not include these devices, consult the
engineer or architect in charge before you operate the pump.
Vibration can be transmitted to the piping system, which can
result in objectionable noise away from the pump.
Consider a consultation with a noise specialist.
This facilitates priming, ensures a steady flow of liquid, and
provides a positive suction head on the pump.
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 9
Installation
Mode of discharge
Piping checklist
You can install this pump to discharge either vertically or horizontally. The arrow on the
pump body must point in the direction of the flow.
You can install the pump with the motor either vertical or horizontal. Do not install the
motor below the pump body.
WARNING:
• The heating of water and other fluids causes volumetric expansion. The associated
forces can cause the failure of system components and the release of hightemperature fluids. In order to prevent this, install properly sized and located
compression tanks and pressure-relief valves. Failure to follow these instructions can
result in serious personal injury or death, or property damage.
• Avoid serious personal injury and property damage. Make sure that the flange bolts
are adequately torqued.
• Never force piping to make a connection with a pump.
Check Explanation/comment Checked
Check that a section of straight pipe, with a length that
is five times its diameter, is installed between the
suction side of the pump and the first elbow, or that a
B&G Suction Diffuser is installed.
Check that the suction and discharge pipes are
supported independently by use of pipe hangers near
the pump .
Check that there is a strong, rigid support for the
suction and discharge lines.
For pumps with flanges, check that the bolt holes in
the pump flanges match the bolt holes in the pipe
flanges.
Check that the suction or discharge lines are not
forced into position.
Check that fittings for absorbing expansion are
installed in the system when considerable
temperature changes are expected.
Check that you have a foot valve of equal or greater
area than the pump suction piping when you use in
an open system with a suction lift.
Check that a B&G Triple Duty® valve is installed in the
discharge line.
Check that the pipeline has isolation valves around
the pump and has a drain valve in the suction pipe.
Use PTFE tape sealer or a high quality thread sealant
when you install the suction and discharge
connections to a threaded pump housing.
On an open system, check that the end of the suction
pipe is at least 3 ft. below the surface of the water in
the suction well.
This reduces suction turbulence by
straightening the flow of liquid before it enters
the pump.
This eliminates pipe strain on the pump .
As a rule, ordinary wire or band hangers are not
adequate to maintain proper alignment.
—
Bearing wear will result if suction or discharge
lines are forced into position.
This helps to avoid strain on the pump.
Prevent clogging by using a strainer at the
suction inlet next to the foot valve. Make sure
that the strainer has an area three times that of
the suction pipe with a mesh hole diameter of
no less than 0.25 in. (0.64 cm).
This valve serves as a check valve that protects
the pump from water hammer, and serves as an
isolation valve for servicing and for throttling.
—
—
This prevents air from being drawn into the
pump. Avoid air pockets in the suction line and
make sure that each section of the suction pipe
is air tight.
10 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
Typical installation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Installation
Check Explanation/comment Checked
Check that new flange gaskets are installed between
the flanges of the pump body suction and discharge
pipes. Make sure that these gaskets are clean and
grease-free.
Suitable fasteners for this connection are
supplied in the Xylem fastener pack. Apply a
torque of 8 to 11 ft. lbs (11 to 15 Nm) to each of
the flange bolts.
1. Expansion tank
2. B&G Rolairtrol® air separator
3. Supply to system
4. TPV tank purge system
5. B&G Triple Duty® valve
6. B&G Series e-90 Pump
7. B&G Suction Diffuser
8. Isolation valve
9. Pipe from boiler, chiller, or converter
10. Cold water supply
11. B&G Pressure Reducing Valve
12. B&G Model 107A — high capacity vent
13. B&G #7 or #87 Air Vent
14. Drain valve
Do not install and operate B&G Series e-90 pumps in closed systems unless the system is
designed with these safety and control devices:
• Pressure relief valves
• Expansion tanks
• Pressure controlling equipment
• Temperature controlling equipment
• Flow controlling equipment
Check that the control and safety devices have these characteristics:
• Properly sized for their purpose
• Placed correctly in the system before putting the system into operation
Connect the wiring
WARNING:
• Disconnect and lock out electrical power before installing or servicing the unit.
• Motors without built-in protection must be provided with contactors and thermal
overload protection for single-phase motors, or starters with heaters for three-phase
motors. (See the nameplate on the drive unit to select properly-sized overloads.)
Electrical Hazard:
Make sure that all connections are secure and the conduit box cover is closed before you
connect the electrical power.
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 11
1. Remove the screws that secure the conduit box cover.
2. Lift off the cover.
3. Attach the appropriately sized connector to the hole in the side of the conduit box.
Commissioning, Startup, Operation, and Shutdown
Commissioning, Startup, Operation,
and Shutdown
Preparation for startup
WARNING:
• Failure to follow these precautions before you start the unit will lead to serious
personal injury and equipment failure.
• Do not operate the pump below the minimum rated flows or with the suction or
discharge valves closed. These conditions can create an explosive hazard due to
vaporization of pumped fluid and can quickly lead to pump failure and physical injury.
• If the pump, motor, or piping operate at extremely high or low temperatures, then
guarding or insulation is required. Failure to follow these instructions can result in
serious personal injury or death, and property damage.
• Always disconnect and lock out power to the driver before you perform any
installation or maintenance tasks. Failure to disconnect and lock out driver power will
result in serious physical injury.
• Operating the pump in reverse rotation can result in the contact of metal parts, heat
generation, and breach of containment.
NOTICE:
You must follow these precautions before you start the pump:
At initial startup, do not adjust the variable-speed drivers or check for speed governor or
over-speed trip settings while the variable-speed driver is coupled to the pump. If the
settings have not been verified, then uncouple the unit and refer to instructions supplied
by the driver manufacturer.
Check the rotation
WARNING:
• Verify the driver settings before you start any pump.
• Make sure that the warm-up rate does not exceed 2.5°F (1.4°C) per minute.
• Flush and clear the system thoroughly to remove dirt or debris in the pipe system in
order to prevent premature failure at initial startup.
• Bring variable-speed drivers to the rated speed as quickly as possible.
• If temperatures of the pumped fluid will exceed 200°F (93°C), then warm up the pump
prior to operation. Circulate a small amount of fluid through the pump until the casing
temperature is within 100°F (38°C) of the fluid temperature.
• Operating the pump in reverse rotation can result in the contact of metal parts, heat
generation, and breach of containment.
• Always disconnect and lock out power to the driver before you perform any
installation or maintenance tasks. Failure to disconnect and lock out driver power will
result in serious physical injury.
1. Unlock power to the driver.
2. Make sure that everyone is clear, and then jog the driver long enough to determine
that the direction of rotation corresponds to the arrow on the pump.
12 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
Pump rotation is clockwise when viewed from the back of the motor. An arrow is
provided to show rotational direction.
3. Lock out power to the driver.
Lubrication requirements
These pumps are permanently lubricated.
Prime the pump
CAUTION:
Do not run the pump dry.
Make sure that the pump body is full of liquid before startup. If the system does not
automatically fill the pump body with liquid, then you must manually prime the pump.
1. Loosen the vent plugs on the pump body.
2. While venting the air from the pump body, rotate the pump shaft a few times by hand.
3. After all air has been purged from the pump, close the vent plugs.
Commissioning, Startup, Operation, and Shutdown
Start the pump
WARNING:
Pressurize the pump body slowly while you check for leaks at all joints with gaskets.
Failure to follow these instructions can result in serious personal injury and/or property
damage.
CAUTION:
Before you start the pump, you must perform these tasks:
1. Fully close or partially open the discharge valve, depending on system conditions.
2. Start the motor.
3. Slowly open the discharge valve until the pump reaches the desired flow.
4. Immediately check the pressure gauge to ensure that the pump quickly reaches the
5. If the pump fails to reach the correct pressure, perform these steps:
6. Monitor the pump while it is operating:
7. Repeat steps 5 and 6 until the pump runs properly.
• Observe the pump for vibration levels, bearing temperature, and excessive noise. If
normal levels are exceeded, shut down the pump and resolve the issue.
• Open the suction valve.
• Open any recirculation or cooling lines.
correct discharge pressure.
a) Stop the motor.
b) Restart the motor.
a) Check the pump for bearing temperature, excessive vibration, and noise.
b) If the pump exceeds normal levels, then shut down the pump immediately and
correct the problem.
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 13
Commissioning, Startup, Operation, and Shutdown
Pump operation precautions
General considerations
CAUTION:
• Vary the capacity with the regulating valve in the discharge line. Never throttle the
flow from the suction side since this can result in decreased performance, unexpected
heat generation, and equipment damage.
• Do not overload the driver. Driver overload can result in unexpected heat generation
and equipment damage. The driver can overload in these circumstances:
• The specific gravity of the pumped fluid is greater than expected.
• The pumped fluid exceeds the rated flow rate.
• Make sure to operate the pump at or near the rated conditions. Failure to do so can
result in pump damage from cavitation or recirculation.
Operation at reduced capacity
WARNING:
Never operate any pumping system with a blocked suction and discharge. Operation,
even for a brief period under these conditions, can cause confined pumped fluid to
overheat, which results in a violent explosion. You must take all necessary measures to
avoid this condition.
CAUTION:
Avoid excessive vibration levels. Excessive vibration levels can damage the bearings,
stuffing box or seal chamber, and the mechanical seal, which can result in decreased
performance.
NOTICE:
• Avoid increased radial load. Failure to do so can cause stress on the shaft and
bearings.
• Avoid heat build-up. Failure to do so can cause rotating parts to score or seize.
• Avoid cavitation. Failure to do so can cause damage to the internal surfaces of the
pump.
Operation under freezing conditions
NOTICE:
Do not expose an idle pump to freezing conditions. Drain all liquid that is inside the pump
and the cooling coils. Failure to do so can cause liquid to freeze and damage the pump.
Shut down the pump
1. Slowly close the discharge valve.
2. Shut down and lock the driver to prevent accidental rotation.
14 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
Maintenance
Disassembly
Disassembly precautions
This manual clearly identifies accepted methods for disassembling units. These methods
must be adhered to.
WARNING:
• Make sure that the pump is isolated from the system and that pressure is relieved
before you disassemble the pump, remove plugs, open vent or drain valves, or
disconnect the piping.
• Always disconnect and lock out power to the driver before you perform any
installation or maintenance tasks. Failure to disconnect and lock out driver power will
result in serious physical injury.
• Crush hazard. The unit and the components can be heavy. Use proper lifting methods
and wear steel-toed shoes at all times.
• After you disassemble a gasket joint, always use a new gasket upon reassembly.
Never reuse old gaskets. Failure to follow these instructions can result in serious
personal injury, death, and/or property damage.
• Trapped liquid can rapidly expand and result in a violent explosion and injury. Never
apply heat to impellers, propellers, or their retaining devices to aid in their removal.
Maintenance
Drain the pump
NOTICE:
Make sure that all replacement parts are available before you disassemble the pump for
overhaul.
CAUTION:
• Allow all system and pump components to cool before you handle them to prevent
physical injury.
1. Disconnect the electrical supply and lock it out of service.
2. Loosen the conduit box cover screws and remove the cover.
3. Disconnect the conduit and wiring.
4. Close the isolation valves on the suction and discharge sides of the pump.
You must drain the system if no valves are installed.
5. Open the drain valve.
Do not proceed until liquid stops coming out of the drain valve. If liquid continues to
flow from the drain valve, the isolation valves are not sealing properly and you must
repair them before you proceed.
6. Leave the drain valve open.
Do not close the drain valve until the reassembly is complete.
7. Drain the liquid from the piping and flush the pump if it is necessary.
8. Disconnect all auxiliary piping and tubing.
9. Loosen the volute capscrews but do not remove them.
10. Shift the pump position slightly in order to allow the pressurized water to escape.
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 15
1
6
5
10
7
8
2
13
9
4
12
11
6
10
3
Maintenance
11. Remove the volute capscrews and remove the pump assembly from the volute.
Typical cross section
WARNING:
Make certain that the internal pressure is relieved before you continue.
Failure to follow these instructions can result in serious personal injury
and/or property damage.
1. Shaft 8. Volute
2. Slinger 9. Motor capscrew
3. Bracket coverplate 10. Gauge tapping
4. Volute capscrew 11. Suction
5. Discharge 12. Volute gasket
6. Companion flange 13. Seal assembly
7. Impeller
Remove the seal assembly for all sizes
16 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
Figure 2: Typical cross section
1. Remove the motor assembly from the system.
2. Remove the plug or cover from the motor rear end plate. This will allow access to the
end of the motor shaft. A slot or wrench flats are provided on the end of the shaft to
retain the shaft during assembly and disassembly.
3. Using a large screwdriver or an end wrench to hold the shaft and a strap wrench on
the impeller, turn the impeller counterclockwise to remove it from the motor shaft.
The impeller is held in place with Loctite and torque.
NOTICE:
These seal assemblies consist of a stationary seal insert assembly and a rotating seal
assembly. Each of these components must be replaced when you replace the
mechanical seal. Never replace individual components separately.
4. Grab the OD of the seal head assembly and remove. Remove the four capscrews that
hold the bracket to the motor and remove the bracket. Push the cup mounted seal
seat out of the bracket with a small screwdriver.
5. Clean the motor shaft and bracket recess with a clean lint free cloth.
Pre-assembly inspections
Guidelines
Before you assemble the pump parts, make sure you follow these guidelines:
• Inspect the pump parts according to the information in these pre-assembly topics
before you reassemble your pump. Replace any part that does not meet the required
criteria.
• Make sure that the parts are clean. Clean the pump parts in solvent in order to remove
oil, grease, and dirt.
NOTICE:
Protect machined surfaces while you clean the parts. Failure to do so may result in
equipment damage.
Maintenance
Replacement guidelines
Impeller replacement
This table shows the criteria for replacing the impeller:
Impeller parts When to replace
Impeller vanes • When grooved deeper than 1/16 in. (1.6 mm), or
Vane edges When you see cracks, pitting, or corrosion damage
Impeller eye When worn or grooved more than 1/16 in.(1.6 mm)
Gaskets, O-rings, and seal replacement
• Replace all gaskets and O-rings at each overhaul and disassembly.
• Inspect the seats. They must be smooth and free of physical defects.
• Replace parts if the seal faces or elastomer are damaged.
Reassembly
Reassemble the seal assembly
WARNING:
After you disassemble a gasket joint, always use a new gasket upon reassembly. Never
reuse old gaskets. Failure to follow these instructions can result in serious personal injury,
death, and/or property damage.
• When worn evenly more than 1/32 in. (0.8 mm)
1. Lubricate the OD of the cup mounted seal seat with soapy water or P80 Rubber
Lubricant and push into the bracket.
2. Install the bracket onto the motor.
3. Check that the seal faces are clean. Lubricate the ID of the seal head assembly with
soapy water or P80 and push onto the motor shaft.
The seal head assembly is a unitized design and should not be disassembled.
Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual 17
Maintenance
4. Clean the motor and impeller threads. Apply Loctite 7471 Primer to the threads of the
motor and impeller. Allow to dry. Apply a small amount of Loctite Retaining
Compound 609 or 680 to the threads. Care must be used when applying Loctite so
that it does not get on surrounding areas.
5. Screw the impeller onto the motor shaft. Using a large screwdriver or an end wrench
and a strap wrench on the impeller OD, tighten the impeller to the motor shaft.
Torque the impeller to 20-25 ft-lbs. 25 ft-lbs can be approximated by turning the
impeller until the impeller hub is firmly against the motor shaft shoulder and then
turning an additional 15 degrees.
NOTE: On three phase motors it is very important to follow these instructions. Failure
to comply could allow the impeller to come loose during the motor rotation check if
the motor starts in reverse rotation.
6. Clean the bracket and volute gasket surfaces. Install a new gasket on the bracket.
7. Insert the motor assembly back into the pump casing. Tighten the casing capscrews
evenly.
8. Close the drain value and open the isolation valves. Inspect pump for leaks. If not
leaking, return pump to service. Reconnect the electrical service.
Capscrew torque values
Capscrew torque in ft-lbs (Nm)
Capscrew
type
SAE grade 2 6 (8) 13 (18) 25 (34) 38 (52) 60 (81) 120 (163) 190 (258) 210 (285) 300 (407)
Brass or
stainless
steel
SAE grade 5 10 (14) 20 (27) 35 (47) 60 (81) 90 (122) 180 (244) 325 (441) 525 (712) 800 (1085)
Head
marking
or
1/4 in. 5/16 in. 3/8 in. 7/16 in. 1/2 in. 5/8 in. 3/4 in. 7/8 in. 1 in.
4 (5) 10 (14) 17 (23) 27 (37) 42 (57) 83 (113) 130 (176) 200 (271) 300 (407)
Dealer servicing
If trouble occurs that cannot be rectified, contact your local sales and service
representative and be prepared to provide this information:
1. Complete nameplate data of pump and motor
2. Suction and discharge pipe pressure gauge readings
3. Ampere draw of the motor
4. A sketch of the pump hook-up and piping
18 Series e-90 Close-Coupled In-Line Centrifugal Pumps Installation, Operation, and Maintenance Manual
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The original instruction is in English. All non-English
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P2000799_B_en.US_2013-10_IOM.Series_e-90
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