Bell & Gossett P2000452 User Manual

Installation, Operation, and
Maintenance Manual

Series 580

Table of Contents

Introduction and Safety ...................................................................................................................................................2

Introduction.......................................................................................................................................................................2

Inspect the package........................................................................................................................................................2

Inspect the unit...............................................................................................................................................................2

Product warranty............................................................................................................................................................2

Safety...................................................................................................................................................................................3

Safety message levels.....................................................................................................................................................3

Safety instruction decals................................................................................................................................................4

User safety.......................................................................................................................................................................5

Environmental safety.....................................................................................................................................................6

Transportation and Storage ............................................................................................................................................8

Pump lifting........................................................................................................................................................................8

Long-term storage.............................................................................................................................................................8

Product Description ..........................................................................................................................................................9

General description...........................................................................................................................................................9

Operational specifications................................................................................................................................................9

Table of Contents

Installation.........................................................................................................................................................................11

Preinstallation...................................................................................................................................................................11

Pump location guidelines............................................................................................................................................11

Piping checklist.............................................................................................................................................................12

Commissioning, Startup, Operation, and Shutdown ............................................................................................14

Preparation for startup...................................................................................................................................................14

Check the rotation.......................................................................................................................................................14

Prime the pump...............................................................................................................................................................15

Start the pump.................................................................................................................................................................15

Pump operation precautions.........................................................................................................................................16

Shut down the pump......................................................................................................................................................16

Maintenance ......................................................................................................................................................................17

Lubrication.......................................................................................................................................................................17

Disassembly......................................................................................................................................................................17

Disassembly precautions.............................................................................................................................................17

Drain the pump............................................................................................................................................................17

Remove the pump assembly.......................................................................................................................................17

Remove the impeller....................................................................................................................................................18

Remove the mechanical seal (580 and 580-F) ........................................................................................................18

Pre-assembly inspections...............................................................................................................................................18

Replacement guidelines...............................................................................................................................................18

Shaft and sleeve inspection.........................................................................................................................................19

Reassembly.......................................................................................................................................................................19

Assemble the standard mechanical seal (580 and 580-F) .....................................................................................19

Install the impeller.......................................................................................................................................................20

Reinstall the pump assembly......................................................................................................................................20

Screw torque values.....................................................................................................................................................20

Dealer servicing ...........................................................................................................................................................20

Series 580 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.

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.

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.

4. Contact your sales representative if anything is out of order.

Product warranty

Coverage

undertakes to remedy faults in products from under these conditions:

• The faults are due to defects in design, materials, or workmanship.

• The faults are reported to an representative within the warranty period.

• The product is used only under the conditions described in this manual.

• The monitoring equipment incorporated in the product is correctly connected and in use.

• All service and repair work is done by -authorized personnel.

• Genuine parts are used.

• Only Ex-approved spare parts and accessories authorized are used in Ex-approved products.

Limitations

The warranty does not cover faults caused by these situations:

• Deficient maintenance

• Improper installation

• Modifications or changes to the product and installation made without consulting

Dispose of all packing materials in accordance with local regulations.

For your personal safety, be careful when you handle nails and straps.

2 Series 580 Installation, Operation, and Maintenance Manual

Warranty claim

Safety

Introduction and Safety

• Incorrectly executed repair work

• Normal wear and tear

assumes no liability for these situations:

• Bodily injuries

• Material damages

• Economic losses

products are high-quality products with expected reliable operation and long life . However, should the

need arise for a warranty claim, then contact your representative.

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 . If there is a question regarding the intended use of
the equipment, please contact an representative before proceeding.

• Installation, Operation, and Maintenance manuals clearly identify accepted methods for disassembling
units. These methods must be adhered to. 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.

• Do not change the service application without the approval of an authorized representative.

CAUTION:

You must observe the instructions for installation, operation, and maintenance contained in this manual.
Failure to do so could result in physical injury, damage, or delays.

Safety message levels

About safety messa ges

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:

• Personal accidents and health problems

• Damage to the product

• Product malfunction

Denitions

Safety message level Indication

DANGER:

A hazardous situation which, if not avoided, will
result in death or serious injury

Series 580 Installation, Operation, and Maintenance Manual 3

Introduction and Safety

Safety message level Indication

A hazardous situation which, if not avoided, could

WARNING:

CAUTION:

Electrical Hazard:

result in death or serious injury

A hazardous situation which, if not avoided, could
result in minor or moderate injury

The possibility of electrical risks if instructions are
not followed in a proper manner

NOTICE:

Safety instruction decals

WARNING:

The maximum working pressure of the pump is listed on the nameplate. Do not exceed this pressure.
Failure to follow these instructions can result in serious personal injury, death, and/or property damage.

Alert symbol

• A potential situation which, if not avoided,
could result in undesirable conditions

• A practice not related to personal injury

This safety alert symbol is used in manuals and on the safety instruction decals on
the pump to draw attention to safety-related instructions.

When used, the safety alert symbol means that failure to follow the instructions may
result in a safety hazard.

4 Series 580 Installation, Operation, and Maintenance Manual

Decals

Introduction and Safety

Make sure your pump has these safety instruction decals and that they are located as this figure shows. If
the decals are missing or illegible, contact your local representative for a replacement.

User safety

General safety r ules

Safety equipment

P70643

P70644

P70642

Make sure that all safety instruction decals are always clearly visible and readable.

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.

Use safety equipment according to the company regulations. Use this safety equipment within the work
area:

• Helmet

• Safety goggles, preferably with side shields

• Protective shoes

• Protective gloves

• Gas mask

Series 580 Installation, Operation, and Maintenance Manual 5

Introduction and Safety

• Hearing protection

• First-aid kit

• Safety devices

NOTICE:

Never operate a unit unless safety devices are installed. Also see specific information about safety
devices in other chapters of this manual.

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 property.

• 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.

Wash the skin and eyes

Do the following if chemicals or hazardous fluids have come into contact with your eyes or your skin:

If you need to wash
your...

Eyes

Skin

Environmental safety

The w ork area

Always keep the station clean to avoid and/or discover emissions.

Recycling guidelines

Always recycle according to these guidelines:

1. Follow local laws and regulations regarding recycling if the unit or parts are accepted by an authorized
recycling company.

2. If the first guideline is not applicable, then return the unit or parts to your representative.

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.

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 one minute.

3. Seek medical attention, if required.

6 Series 580 Installation, Operation, and Maintenance Manual

Electrical installation

Introduction and Safety

• Clean up all spills in accordance with safety and environmental procedures.

• Report all environmental emissions to the appropriate authorities.

For electrical installation recycling requirements, consult your local electric utility.

Series 580 Installation, Operation, and Maintenance Manual 7

Transportation and Storage

Transportation and Storage

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 steel­toed 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 pump 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.

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
representative.

8 Series 580 Installation, Operation, and Maintenance Manual

Product Description

General description

The pump is a centrifugal, close-coupled pump. These features make the pump easy to install, operate, and
service:

• High efficiency

• Rugged bronze-fitted construction

• Horizontal or vertical in-line mounting

Intended applications

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.

NOTICE:

This product is not intended for potable water applications.

The pump is intended for use with these pumped fluids:

• Unheated domestic and fresh water

• Boiler feed water

• Condensate

• Hydronic cooling or heating

• Benign liquids

• Pressure boosting

• General liquid transfer

• Pool water with a chlorine level equal or less than 2 ppm

Product Description

Rotation

Pump rotation is clockwise when viewed from the back of the motor. An arrow is also located on the
pump to show the direction of rotation.

Operational specifications

Mechanical seal specications

This table describes the specifications of each mechanical seal type.

Seal type Parameter Value

Standard seals, BUNA

Standard seals, EPT

Flushed single seals

Table notes

5

5

1,3,4,

pH range limits for BUNA pH 7–9

Liquid temperature range that
complies with the pH range limits
for BUNA

pH range limits for EPT pH 7–11

Liquid temperature range that
complies with the pH range limits
for EPT

pH range limits pH 7–9

Liquid temperature range

-20˚F to 225˚F (-29˚C to 107˚C)

-20˚F to 250˚F (-29˚C to 121˚C)

0˚F to 250˚F (-18˚C to 121˚C)

Series 580 Installation, Operation, and Maintenance Manual 9

Product Description

1. An external flush is required on low pressure systems that contain a high concentration of abrasives.

2. F

or operating temperatures above 250°F, a cooled flush is required and is recommended for
temperatures above 225°F for optimum seal life. On closed systems, cooling is accomplished by
inserting a small heat exchanger in the flush line to cool the seal flushing fluid.

3. Flush-line filters and sediment separators are available on request.

4. Use a standard seal on closed or open systems that are relatively free of dirt and/or other abrasive
particles.

10 Series 580 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.

• 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.)

NOTICE: Supervision by an authorized representative is recommended to ensure proper installation.
Failure to do so may result in equipment damage or decreased performance.

Evaluate the installation in order to determine that the Net Positive Suction Head Available (NPSHA)
meets or exceeds the Net Positive Suction Head Required (NPSHR), as stated by the pump performance
curve.

Installation

Pump location guidelines

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.

If the pump is not on a closed system, locate the
pump so that the fewest number of bends or elbows
in the suction pipe are needed.

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.

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

• Compression 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.

Series 580 Installation, Operation, and Maintenance Manual 11

Installation

Guideline Explanation/comment

Take into consideration the occurrence of unwanted
noise and vibration.

If the pump location is overhead, undertake special
precautions to reduce possible noise transmission.

Piping checklist

WARNING:

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 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.

For pumps mounted in vertical piping with the
motor in the horizontal position, check that
adequate support is provided.

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 an open system with a suction lift.

Check that flexible piping is used on both the
suction and discharge sides of the pump when
you use an isolation base.

Check that a properly sized suction strainer
conforming to NSF/ANSI Standard 50 is
installed in the suction line.

The best pump location for noise and vibration
absorption is on a concrete floor with subsoil
underneath.

Consider a consultation with a noise specialist.

• The heating of water and other fluids causes volumetric expansion. The associated forces can cause
the failure of system components and the release of high-temperature 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.

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.

—

This prevents strain on the pump parts and
piping. Do not mount the pump with the
motor vertically downward. Do not use
motor lift rings to suspend the pump.

Coupling and bearing wear will result if
suction or discharge lines are forced into
position.

The code for Pressure Piping (A.S.A.B.

31.1) lists many types of supports available
for various applications.

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).

—

Prevents clogging. Make sure 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).

12 Series 580 Installation, Operation, and Maintenance Manual

Installation

Check Explanation/comment Checked

Check that the pipeline has isolation valves

—
around the pump and has a drain valve in the
suction pipe.

Use Teflon tape sealer or a high quality thread

—
sealant when you install the suction and discharge
connections to a threaded pump housing.

Series 580 Installation, Operation, and Maintenance Manual 13

Commissioning, Startup, Operation, and Shutdown

Commissioning, Startup, Operation, and
Shutdown

Preparation for startup

WARNING:

• Failure to follow these precautions before you start the pump 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.

Precautions

NOTICE :

• Verify the driver settings before you start the pump.

• Make sure that the warm-up rate does not exceed 2.5°F (1.4°C) per minute.

You must follow these precautions before you start the pump:

• Flush and clean 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.

• Run a new or rebuilt pump at a speed that provides enough flow to flush and cool the close-running

surfaces of the stuffing-box bushing.

• 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.

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:

• 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.

14 Series 580 Installation, Operation, and Maintenance Manual

3. Lock out power to the driver.

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.

Start the pump

CAUTION:

• Observe the pump for vibration levels, bearing temperature, and excessive noise. If normal levels are
exceeded, shut down the pump and resolve the issue.

Commissioning, Startup, Operation, and Shutdown

Before you start the pump, you must perform these tasks:

• Open the suction valve.

• Open any recirculation or cooling lines.

1. Fully close or partially open the discharge valve, depending on system conditions.

2. Start the driver.

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 correct discharge
pressure.

5. If the pump fails to reach the correct pressure, perform these steps:

a) Stop the driver.
b) Prime the pump again.
c) Restart the driver.

6. Monitor the pump while it is operating:

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.

7. Repeat steps 5 and 6 until the pump runs properly.

Series 580 Installation, Operation, and Maintenance Manual 15

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.

• 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 flush
lines. 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.

16 Series 580 Installation, Operation, and Maintenance Manual

Maintenance

Lubrication

The pump motor has been lubricated at the factory. Keep the motor properly lubricated in accordance
with the motor manufacturer's instructions.

Disassembly

Disassembly precautions

WARNING:

• Installation, Operation, and Maintenance manuals clearly identify accepted methods for disassembling
units. These methods must be adhered to. 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.

• 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 steel­toed shoes at all times.

Maintenance

NOTICE:

Make sure that all replacement parts are available before you disassemble the pump for overhaul.

Drain the pump

CAUTION:

• Allow all system and pump components to cool before you handle them to prevent physical injury.

1. Close the isolation valves on the suction and discharge sides of the pump.

You must drain the system if no valves are installed.

2. 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.

3. Leave the drain valve open and remove the drain plug located on the bottom of the pump housing.

Do not reinstall the plug or close the drain valve until the reassembly is complete.

4. Drain the liquid from the piping and flush the pump if it is necessary.

5. Disconnect all auxiliary piping and tubing.

Remove the pump assembly

1. Loosen the volute capscrews but do not remove them.

2. Use the capscrews in the jackscrew holes in order to loosen the pump assembly from the volute.

WARNING:

Pressurized device. Make sure that the internal pressure is relieved before you continue.

Series 580 Installation, Operation, and Maintenance Manual 17

Maintenance

3. Remove the seal flushing tube if it is used.

4. Remove the volute capscrews.

5. Remove the pump assembly from the volute.

Remove the impeller

WARNING:

Never apply heat to remove an impeller. The use of heat may cause an explosion due to trapped liquid,
resulting in severe physical injury and property damage.

CAUTION:

Wear heavy work gloves when you handle impellers. The sharp edges can cause physical injury.

1. Remove the impeller capscrew.

2. Remove the lockwasher and the washer.

3. Remove the impeller.

Remove the mechanical seal (580 and 580-F)

1. Remove the rotating portion of the seal.

If necessary, use a screwdriver to loosen the rubber ring.

2. Remove the seal insert, the insert gasket, and the retainer if it is used.

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.

Replacement guidelines

Impeller replacement

This table shows the criteria for replacing the impeller:

Impeller parts When to replace

Impeller vanes

Vane edges When you see cracks, pitting, or corrosion damage

Gaskets, O-rings, and seats 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 seats are defective.

• When grooved deeper than 1/16 in. (1.6 mm),

or

• When worn evenly more than 1/32 in. (0.8 mm)

18 Series 580 Installation, Operation, and Maintenance Manual

Shaft and sleeve inspection

Inspection criteria

Inspect the shaft and sleeve according to this criteria:

• Thoroughly clean the shaft and sleeve.

• Thoroughly clean the coverplate seal cavity.

• Inspect the surface for damage such as pitting, corrosion, nicks, and scratches.

Replace these parts if they are damaged.

Reassembly

Assemble the standard mechanical seal (580 and 580-F)

1. Lubricate the shaft sleeve and coverplate seal cavity with soapy water.

Do not use a petroleum lubricant.

2. Install a new insert gasket.

3. Install a new seal insert and make sure that the indentation is against the insert gasket.

4. Slide a new rotating seal assembly onto the shaft sleeve.

5. Push the top of the compression ring with a screwdriver until the seal is tight against the seal insert.

6. Install the seal spring and point the narrow end toward the seal.

Maintenance

13

12

11

10

9

1. Slinger

2. Bracket coverplate

3. Seal assembly

4. Impeller key

5. Volute capscrew

6. Impeller

7. Impeller lockwasher

8. Volute

9. Impeller capscrew

10. Volute gasket

11. Impeller washer

12. Shaft sleeve

13. Shaft

Figure 2: Standard mechanical seal

1

2

3

4

5

6

7

8

Series 580 Installation, Operation, and Maintenance Manual 19

Maintenance

Install the impeller

1. Install the impeller, impeller washer, lockwasher, and capscrew.

2. Tighten the capscrew according to the Capscrew torque values table.

Reinstall the pump assembly

1. Install a new volute gasket.

2. Install the pump assembly into the volute.

3. Tighten the volute capscrews according to the Capscrew torque table.

4. Install a seal flushing tube if it is used.

5. Install the drain plug and close the drain valve.

6. Open the isolation valves and inspect the pump for leaks.

7. Return the pump to service if it is not leaking.

Screw torque values

Capscrew torque in ft-lb (Nm)

Capscrew

type

SAE grade
2

Head

marking

1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1

6 (8) 13 (18) 25 (34) 38 (52) 60 (81) 120 (163) 190 (258) 210 (285) 300 (407)

Capscrew diameter (in inches)

Brass and
stainless
steel

SAE grade
5

or

4 (5) 10 (14) 17 (23) 27 (37) 42 (57) 83 (113) 130 (176) 200 (271) 300 (407)

10 (14) 20 (27) 35 (47) 60 (81) 90 (122) 180 (244) 325 (440) 525 (712) 800 (1085)

Dealer servicing

If trouble occurs that cannot be rectified, contact your local 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

20 Series 580 Installation, Operation, and Maintenance Manual

Visit our Web site for the latest version of this document and more information

Marlow
8200 N. Austin Avenue
Morton Grove, IL 60053
USA

www.marlowpumpsonline.net

© 2010 The original instruction is in English. All non-English instructions are translations of the original

instruction. P2000452_A_1.0_en.US_2010-4_IOM.Series580