Goulds 2GFK1212D, 2GFK1214D, 2GFK1713B, 2GFK1213D, 2GFK1714B Installation, Operation And Maintenance Manual

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Page 1

Installation, Operation, and

Maintenance Manual

887071_3.0

GFK-GFV Series

Submersible Sewage Pumps

Page 2

Page 3

Pump models included in the IOM

2GFK1712B 2GFK1212D

2GFK1713B 2GFK1213D

2GFK1714B 2GFK1214D

2GFK1715B 2GFK1215D

2GFK1712C 2GFV1712E

2GFK1713C 2GFV1713E

2GFK1714C 2GFV1714E

2GFK1715C 2GFV1715E

2GFV1212F

2GFV1213F

2GFV1214F

2GFV1215F

Pump models included in the IOM

GFK-GFV Series Installation, Operation, and Maintenance Manual

Page 4

Table of Contents

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

1.1 Introduction.................................................................................................................................................................................. 2

1.2 Safety terminology and symbols................................................................................................................................................2

1.3 User safety.....................................................................................................................................................................................2

1.4 Ex-approved products................................................................................................................................................................ 2

1.5 Special hazards............................................................................................................................................................................ 3

1.6 Protecting the environment........................................................................................................................................................3

1.7 Spare parts....................................................................................................................................................................................3

1.8 Warranty........................................................................................................................................................................................3

2 Transportation and Storage.......................................................................................................................................................3

2.1 Examine the delivery................................................................................................................................................................... 3

2.1.1 Examine the package.......................................................................................................................................................... 3

2.1.2 Examine the unit.................................................................................................................................................................. 3

2.2 Transportation guidelines...........................................................................................................................................................3

2.2.1 Lifting.....................................................................................................................................................................................4

2.3 Temperature ranges for transportation, handling and storage.............................................................................................4

2.4 Storage guidelines.......................................................................................................................................................................4

3 Product Description...................................................................................................................................................................4

3.1 Products included........................................................................................................................................................................4

3.2 Pump design................................................................................................................................................................................ 4

3.3 Monitoring Equipment................................................................................................................................................................5

3.4 The data plate.............................................................................................................................................................................. 5

3.5 Product denomination................................................................................................................................................................ 5

4 Installation................................................................................................................................................................................. 6

4.1 Install the pump........................................................................................................................................................................... 6

4.1.1 Install with Wet well installation......................................................................................................................................... 6

4.1.2 Install with Free-standing installation................................................................................................................................7

4.2 Make the electrical connections................................................................................................................................................ 7

4.2.1 Connect the motor cable to the pump............................................................................................................................. 8

4.2.2 Connect the motor cable to the starter and monitoring equipment............................................................................ 8

4.2.3 Cable charts..........................................................................................................................................................................8

4.3 Check the impeller rotation......................................................................................................................................................11

5 Operation.................................................................................................................................................................................11

5.1 Precautions.................................................................................................................................................................................11

5.2 Start the pump........................................................................................................................................................................... 11

6 Maintenance............................................................................................................................................................................11

6.1 Change the coolant...................................................................................................................................................................12

6.1.1 Empty the coolant..............................................................................................................................................................12

6.1.2 Fill with coolant.................................................................................................................................................................. 12

6.2 Service the pump.......................................................................................................................................................................12

6.2.1 Inspection........................................................................................................................................................................... 13

6.2.2 Overhaul............................................................................................................................................................................. 13

6.2.3 Service in case of alarm.................................................................................................................................................... 13

6.3 Replace the impeller................................................................................................................................................................. 13

6.3.1 Remove the impeller ........................................................................................................................................................ 13

6.3.2 Install the impeller............................................................................................................................................................. 13

7 Troubleshooting.......................................................................................................................................................................14

7.1 The pump does not start.......................................................................................................................................................... 15

7.2 The pump does not stop when a level sensor is used..........................................................................................................15

7.3 The pump starts-stops-starts in rapid sequence................................................................................................................... 15

7.4 The pump runs but the motor protection trips......................................................................................................................16

7.5 The pump delivers too little or no water................................................................................................................................ 16

8 Technical Reference................................................................................................................................................................16

8.1 Motor data.................................................................................................................................................................................. 16

Table of Contents

GFK-GFV Series Installation, Operation, and Maintenance Manual 1

Page 5

1 Introduction and Safety

1.1 Introduction

Electrical hazard Magnetic ﬁelds hazard

Electrical Hazard:

CAUTION:

Purpose of the manual

The purpose of this manual is to provide necessary information for working with the unit. Read this manual carefully before starting work.

Read and keep the manual

Save this manual for future reference, and keep it readily available at the location of the unit.

Intended use

WARNING:

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 and the surroundings. 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.

Other manuals

See also the safety requirements and information in the original manufacturer's manuals for any other equipment furnished separately for use in this system.

Description of user and installer symbols

Speciﬁc information for personnel in charge of installing the product in the system (plumbing and/or electrical aspects) or in charge of maintenance.

Speciﬁc information for users of the product.

1.2 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:

• Personal accidents and health problems

• Damage to the product and its surroundings

• Product malfunction

Hazard levels

Hazard level Indication

DANGER:

WARNING:

CAUTION:

NOTICE:

Special symbols

Some hazard categories have speciﬁc symbols, as shown in the following table.

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

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

Notices are used when there is a risk of equipment damage or decreased performance, but not personal injury.

1.3 User safety

All regulations, codes, and health and safety directives must be observed.

The site

• Observe lockout/tagout procedures before starting work on the product, such as transportation, installation, maintenance, or service.

• Pay attention to the risks presented by gas and vapors in the work area.

• Always be aware of the area surrounding the equipment, and any hazards posed by the site or nearby equipment.

Qualified personnel

This product must be installed, operated, and maintained by qualiﬁed personnel only.

Protective equipment and safety devices

• Use personal protective equipment as needed. Examples of personal protective equipment include, but are not limited to, hard hats, safety goggles, protective gloves and shoes, and breathing equipment.

• Make sure that all safety features on the product are functioning and in use at all times when the unit is being operated.

1.4 Ex-approved products

Follow these special handling instructions if you have an Ex-approved unit.

Personnel requirements

These are the personnel requirements for Ex-approved products in potentially explosive atmospheres:

• All work on the product must be carried out by certiﬁed electricians and Xylem authorized mechanics. Special rules apply to installations in explosive atmospheres.

• All users must know about the risks of electric current and the chemical and physical characteristics of the gas, the vapor, or both present in hazardous areas.

• Any maintenance for Ex-approved products must conform to international and national standards (for example, IEC/EN 60079-17).

Xylem disclaims all responsibility for work done by untrained and unauthorized personnel.

Product and product handling requirements

These are the product and product handling requirements for Ex-approved products in potentially explosive atmospheres:

• Only use the product in accordance with the approved motor data.

• You must fully submerge the Ex-approved product during normal operation. Dry running during service and inspection is only permitted outside the classiﬁed area.

• Before you start work on the product, make sure that the product and the control panel are isolated from the power supply and the control circuit, so they cannot be energized.

• Do not open the product while it is energized or in an explosive gas atmosphere.

• Intrinsically safe circuits are normally required for the automatic level-control system by the level regulator if mounted in zone 0.

• The yield stress of fasteners must be in accordance with the approval drawing and the product speciﬁcation.

• Do not modify the equipment without approval from an Ex-approved Xylem representative.

• Only use original Xylem spare parts that are provided by an Ex-approved Xylem representative.

• The thermal detectors that are ﬁtted to the stator windings must be connected correctly to a separate motor control circuit and in use. The detectors disconnect the power supply to the motor timely. This action prevents the rise of temperatures above the temperature value for the approval classiﬁcation.

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Equipment

locked out by

Name .......................

DANGER

2 Transportation and Storage

• The width of ﬂameproof joints is more than the values speciﬁed in the tables of the IEC 60079–1 standard.

• The gap of ﬂameproof joints is less than the values speciﬁed in Table 1 of the IEC 60079–1 standard.

• The ﬂameproof joints are NOT intended to be repaired.

• The equipment must be submerged during normal operation.

Guidelines for compliance

Compliance is fulﬁlled only when you operate the unit within its intended use. Do not change the conditions of the service without the approval of an Ex-approved Xylem representative. When you install or maintain explosion proof products, always comply with the directive and applicable standards (for example, IEC/EN 60079–14).

Minimum permitted liquid level

See the dimensional drawings of the product for the minimum permitted liquid level according to the approval for explosion proof products. If the information is missing on the dimensional drawing, the product must be fully submerged. Level-sensing equipment must be installed if the product can be operated at less than the minimum submersion depth.

Monitoring equipment

For additional safety, use condition-monitoring devices. Examples of condition-monitoring devices include, but are not limited to, the following:

• Level indicators

• Temperature detectors in addition to the stator thermal detectors

Any thermal detectors or thermal protection devices delivered with the pump must be installed and in use at all times.

1.5 Special hazards

Biological hazards

The product is designed for use in liquids that can be hazardous to your health. Observe these rules when you work with the product:

• Make sure that all personnel who may come into contact with biological hazards are vaccinated against diseases to which they may be exposed.

• Observe strict personal cleanliness.

WARNING: Biological Hazard

Infection risk. Rinse the unit thoroughly with clean water before working on it.

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

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.

Exceptional sites

CAUTION: Radiation Hazard

Do NOT send the product to Xylem if it has been exposed to nuclear radiation, unless Xylem has been informed and appropriate actions have been agreed upon.

1.7 Spare parts

CAUTION:

Only use the manufacturer’s original spare parts to replace any worn or faulty components. The use of unsuitable spare parts may cause malfunctions, damage, and injuries as well as void the warranty.

1.8 Warranty

For information about warranty, see the sales contract.

2 Transportation and Storage

2.1 Examine the delivery

2.1.1 Examine the package

1. Examine the package for damaged or missing items upon delivery.

2. Record any damaged or missing items on the receipt and freight bill.

3. If anything is out of order, then ﬁle a claim with the shipping company.

If the product has been picked up at a distributor, make a claim directly to the distributor.

2.1.2 Examine the unit

1. Remove packing materials from the product. Dispose of all packing materials in accordance with local regula-

tions.

2. To determine whether any parts have been damaged or are missing, examine the product.

3. If applicable, unfasten the product by removing any screws, bolts, or straps.

Use care around nails and straps.

4. If there is any issue, then contact a sales representative.

2.2 Transportation guidelines

Precautions

DANGER: Crush Hazard

Moving parts can entangle or crush. Always disconnect and lock out power before servicing to prevent unexpected startup. Failure to do so could result in death or serious injury.

1.6 Protecting the environment

Emissions and waste disposal

Observe the local regulations and codes regarding:

• Reporting of emissions to the appropriate authorities

• Sorting, recycling and disposal of solid or liquid waste

• Clean-up of spills

GFK-GFV Series Installation, Operation, and Maintenance Manual 3

Position and fastening

The unit can be transported either horizontally or vertically. Make sure that the unit is correctly fastened during transportation, and cannot roll or fall over.

Page 7

3 Product Description

2.2.1 Lifting

Always inspect the lifting equipment and tackle before starting any work.

WARNING: Crush Hazard

1) Always lift the unit by its designated lifting points. 2) Use suitable lifting equipment and ensure that the product is properly harnessed. 3) Wear personal protective equipment.

4) Stay clear of cables and suspended loads.

NOTICE:

Never lift the unit by its cables or hose.

Lifting equipment

Lifting equipment is always required to handle the unit. The lifting equipment must fulﬁll the following requirements:

• The minimum height between the lifting hook and the ﬂoor must be sufﬁcient to lift the unit. Contact a Xylem representative for more information.

• The lifting equipment must be able to hoist the unit straight up and down, preferably without the need for resetting the lifting hook.

• The lifting equipment must be correctly anchored and in good condition.

• The lifting equipment must support the weight of the entire assembly. Only authorized personnel may use the lifting equipment.

• Two sets of lifting equipment must be used to lift the unit for repair work.

• The lifting equipment must be dimensioned to lift the unit with any remaining pumped media in it.

• The lifting equipment must not be oversized.

CAUTION: Crush Hazard

Over-dimensioned lifting equipment can lead to injury. A site-speciﬁc risk analysis must be done.

Below –13°C (9°F), the viscosity increases such that the glycol mixture will lose its ﬂow properties. However, the glycol-water mixture will not solidify completely and thus cannot harm the product.

2.4 Storage guidelines

Storage location

The product must be stored in a covered and dry location free from heat, dirt, and vibrations.

NOTICE:

Protect the product against humidity, heat sources, and mechanical damage.

NOTICE:

Do not place heavy weights on the packed product.

Long-term storage

If the unit is stored more than six months, then the following apply:

• Before operating the unit after storage, it must be inspected with special attention to the seals and the cable entry.

• The impeller/propeller must be rotated every other month to prevent the seals from sticking together.

3 Product Description

3.1 Products included

Pump model Standard EX

1305.180 X

2.3 Temperature ranges for transportation, handling and storage

Handling at freezing temperature

At temperatures below freezing, the product and all installation equipment, including the lifting gear, must be handled with extreme care.

Make sure that the product is warmed up to a temperature above the freezing point before starting up. Avoid rotating the impeller/propeller by hand at temperatures below the freezing point. The recommended method to warm the unit up is to submerge it in the liquid which will be pumped or mixed.

NOTICE:

Never use a naked ﬂame to thaw the unit.

Unit in as-delivered condition

If the unit is still in the condition in which it left the factory - all packing materials are undisturbed - then the acceptable temperature range during transportation, handling and storage is: –50°C (–58ºF) to +60°C (+140ºF).

If the unit has been exposed to freezing temperatures, then allow it to reach the ambient temperature of the sump before operating.

Lifting the unit out of liquid

The unit is normally protected from freezing while operating or immersed in liquid, but the impeller/propeller and the shaft seal may freeze if the unit is lifted out of the liquid into a surrounding temperature below freezing.

Follow these guidelines to avoid freezing damage:

1. Empty all pumped liquid, if applicable.

2. Check all liquids used for lubrication or cooling, both oil and waterglycol mixtures, for the presence of unacceptable amounts of water. Change if needed.

Water-glycol mixtures: Units equipped with an internal closed-loop cooling system are ﬁlled with a mixture of water and 30% glycol. This mixture remains a ﬂowing liquid at temperatures down to –13°C (9°F).

3.2 Pump design

The pump is submersible, and driven by an electric motor.

Intended use

The product is intended for moving wastewater, sludge, raw and clean water. Always follow the application limits that are given in Technical

Reference on page 16. If there is a question regarding the intended

use of the equipment, please contact a local sales and service representative before proceeding.

DANGER: Explosion/Fire Hazard

Special rules apply to installations in explosive or ﬂammable atmospheres. Do not install the product or any auxiliary equipment in an explosive zone unless it is rated explosionproof or intrinsically-safe. If the product is EN/ATEX-, MSHAor FM-approved, then see the speciﬁc EX information in the Safety chapter before taking any further actions.

NOTICE:

Do NOT use the unit in highly corrosive liquids.

Spare parts

• Modiﬁcations to the unit or installation should only be carried out after consulting with Xylem.

• Original spare parts and accessories that are authorized by Xylem are essential for compliance. The use of other parts can invalidate any claims for warranty or compensation. For more information contact your Xylem representative.

Model variants

H S Super high head

High head

4 GFK-GFV Series Installation, Operation, and Maintenance Manual

Page 8

WS007964A

1312 14

17 18 1916159 10 11

WS006257A

XXYYYY YYY YYY YYYY

WS006265B

3 Product Description

Parts

Po-

Denomi-

si-

nation

tion

1 Shaft Stainless steel with an integrated rotor

2 Stator

housing

3 Motor For information about the motor, see Technical Reference

4 Mechani-

cal seal

5 Oil hous-

ing

6 Impeller Vortex

7 Main

bearing

8 Thermal

contact

9 Support

bearing

3.3 Monitoring Equipment

The following applies to the monitoring equipment of the pump:

• The stator incorporates thermal contacts that are connected in series that activate the alarm at overtemperature.

• The thermal contacts open at 125°C (257°F).

• Ex-approved pumps must have thermal contacts that are connected

to the control panel.

• The sensors must be connected to either the SMR 311 monitoring equipment or equivalent equipment.

• The monitoring equipment must be of a design that makes automatic restart impossible.

• Information in the junction box shows if the pump is equipped with optional sensors

GFK-GFV Series Installation, Operation, and Maintenance Manual 5

Description

Cooled by ambient liquid

on page 16.

Inner seal: carbon/aluminium oxide CSB/Al2O Outer seal: silicon carbide/silicon carbide SiC/SiC

Includes coolant that lubricates and cools the seals; acts as a buffer between the pumped ﬂuid and the electric motor

Non-clog

Single-row ball bearing

The pump is equipped with thermal contacts, see

Monitoring Equipment on page 5 .

Single-row ball bearing

Optional sensors

LD LD is a miniature ﬂoat switch for detection of liquid in the stator

housing. Due to its design, it is best suited for pumps in a vertical position. The LD sensor is installed in the bottom of the stator housing.

3.4 The data plate

The data plate is a metal label that is located on the main body of the products. The data plate lists key product speciﬁcations. Specially approved products also have an approval plate.

1. Curve code or Propeller code

2. Serial number

3. Product number

4. Country of origin

5. Additional information

6. Phase; type of current; frequency

7. Rated voltage

8. Thermal protection

9. Thermal class

10.Rated shaft power

11.International standard

12.Degree of protection

13.Rated current

14.Rated speed

15.Maximum submergence

16.Direction of rotation: L=left, R=right

17.Duty class

18.Duty factor

19.Product weight

20.Locked rotor code letter

21.Power factor

22.Maximum ambient temperature

23.Read installation manual

24.Notiﬁed body, only for EN-approved Ex products

Figure 1: The data plate

3.5 Product denomination

Reading instruction

In this section, code characters are illustrated accordingly: X = letter Y = digit The different types of codes are marked up with a, b and c. Code pa-

rameters are marked up with numbers.

Codes and parameters

Page 9

Equipment

locked out by

Name .......................

DANGER

WS007761A

4 Installation

Type of Callout Number Indication

Type of code a Sales denomination

b Product code

c Serial number

Parameter 1 Hydraulic end

2 Type of installation

3 Sales code

4 Version

5 Production year

6 Production cycle

7 Running number

4 Installation

4.1 Install the pump

Before starting work, make sure that the safety instructions in the chapter Introduction and Safety on page 2 have been read and understood.

DANGER: Electrical Hazard

Before starting work on the unit, make sure that the unit and the control panel are isolated from the power supply and cannot be energized. This applies to the control circuit as well.

• Check that the cable and cable entry have not been damaged during transport.

• Always check the impeller rotation before lowering the pump into the pumped liquid.

NOTICE:

Do not run the pump dry.

NOTICE:

Never force piping to make a connection with a pump.

Authority regulation

Vent the tank of a sewage station in accordance with local plumbing codes.

Fasteners

• Only use fasteners of the correct size and material.

• Replace all corroded or damaged fasteners.

• Make sure that all the fasteners are correctly tightened and that there are no missing fasteners.

4.1.1 Install with Wet well installation

In the wet-well installation, the pump is installed on a stationary discharge connection, and operates either completely or partially submerged in the pumped liquid. These requirements and instructions only apply when the installation is made according to the dimensional drawing.

DANGER: Inhalation Hazard

Before entering the work area, make sure that the atmosphere contains sufﬁcient oxygen and no toxic gases.

Hazardous atmospheres

DANGER: Explosion/Fire Hazard

WARNING: Explosion/Fire Hazard

Do not install CSA-approved products in locations that are classiﬁed as hazardous in the National Electric Code(TM), ANSI/NFPA 70-2005.

General requirements

These requirements apply:

• Use the pump dimensional drawing in order to ensure proper installation.

Before installing the pump, do the following:

• Provide a suitable barrier around the work area, for example, a guard rail.

• Make sure that equipment is in place so that the unit cannot roll or fall over during the installation process.

• Check the explosion risk before you weld or use electric hand tools.

Figure 2: Wet well installation

These items are required:

• Guide bars

• Guide bar bracket for attaching the guide equipment to the access frame or to the upper part of the sump

• Level regulators or other control equipment for start, stop, and alarm

• Cable holder for holding the cable and regulating the height of the level regulators

• Access frame (with covers) to which the upper guide bar bracket and cable holder can be attached

• Discharge connection for connecting the pump to the discharge line

The discharge connection has a ﬂange which ﬁts the pump housing ﬂange and a bracket for attaching the guide equipment.

• Fasteners for the discharge connection

• Anchor bolts

6 GFK-GFV Series Installation, Operation, and Maintenance Manual

Page 10

WS007762A

Equipment

locked out by

Name .......................

DANGER

4 Installation

1. Run a cable between the sump and the stator and monitoring equipment.

Make sure that the cable is not sharply bent or pinched.

2. Install the access frame: a) Place the access frame in position and align it horizontally.

b) Grout the frame in place.

3. Grout the anchor bolts in place. Be careful when you align and position the discharge connection in

relation to the access frame.

4. Place the discharge connection in position, and tighten the nuts.

5. Install the guide bars: a) Secure the guide bars in the bracket.

b) Check that the guide bars are placed vertically. Use a level or a

plumb line.

6. Connect the discharge pipe to the discharge connection.

7. Prepare for the level regulator: a) Bolt the cable holder to the access frame.

b) Attach the level regulator cable to the cable holder and adjust

the height of the level regulator.

c) Protect bolts and nuts with a corrosion-preventive compound.

8. Lower the pump along the guide bars.

9. Secure the motor cable: a) Fasten the permanent lifting device to the pump and to the ac-

cess frame. For example, you can use a stainless-steel lifting chain with shackles.

b) Fasten the cable to the cable holder.

Make sure that the cable cannot be sucked into the pump inlet or that it is neither sharply bent, or pinched. Support straps are required for deep installations.

c) Connect the motor cable and the starter and monitoring equip-

ment according to the separate instructions. Make sure that the impeller rotation is correct. For more infor-

mation, see Check the impeller rotation on page 11.

Clean all debris from the sump before starting the pump.

4.1.2 Install with Free-standing installation

In the Free-standing installation, the pump is transportable and intended to operate either completely or partially submerged in the pumped liquid. The pump is equipped with a connection for hose or pipe and stands on a base stand.

The stand is integrated with the pump housing and the hose is connected to pump using thread coupling.

These requirements and instructions only apply when the installation is made according to the dimensional drawing.

1. Run the cable so that it has no sharp bends. Make sure that it is not pinched, and cannot be sucked into the pump inlet.

2. Connect the discharge line.

3. Lower the pump into the sump.

4. Place the pump on the base and make sure it cannot fall over or sink.

Alternatively, the pump can be suspended with a lifting chain just above the sump bottom. Make sure that the pump cannot rotate at startup or during operation.

5. Connect the motor cable and the starter and monitoring equipment according to the separate instructions.

Make sure that the impeller rotation is correct. For more information, see Check the impeller rotation on page 11.

4.2 Make the electrical connections

General precautions

DANGER: Electrical Hazard

Before starting work on the unit, make sure that the unit and the control panel are isolated from the power supply and cannot be energized. This applies to the control circuit as well.

WARNING: Electrical Hazard

Risk of electrical shock or burn. A certiﬁed electrician must supervise all electrical work. Comply with all local codes and regulations.

WARNING: Electrical Hazard

There is a risk of electrical shock or explosion if the electrical connections are not correctly carried out, or if there is fault or damage on the product. Visually inspect equipment for damaged cables, cracked casings or other signs of damage. Make sure that electrical connections have been correctly made.

Figure 3: Free-standing installation

GFK-GFV Series Installation, Operation, and Maintenance Manual 7

WARNING: Crush Hazard

Risk of automatic restart.

CAUTION: Electrical Hazard

Prevent cables from becoming sharply bent or damaged.

NOTICE:

Leakage into the electrical parts can cause damaged equipment or a blown fuse. Keep the cable ends dry at all times.

Requirements

These general requirements apply for electrical installation:

• The supply authority must be notiﬁed before installing the pump if it will be connected to the public mains. When the pump is connected to the public power supply, it may cause ﬂickering of incandescent lamps when started.

• The mains voltage and frequency must agree with the speciﬁcations on the data plate. If the pump can be connected to different voltages, then the connected voltage is speciﬁed by a yellow sticker close to the cable entry.

• The fuses and circuit breakers must have the proper rating, and the pump overload protection (motor protection breaker) must be connected and set to the rated current according to the data plate and

Page 11

WS000509E

L3L1

L3L2

4 Installation

if applicable the cable chart. The starting current in direct-on-line start can be up to six times higher than the rated current.

• The fuse rating and the cables must be in accordance with the local rules and regulations.

• If intermittent operation is prescribed, then the pump must be provided with monitoring equipment supporting such operation.

• If stated on the data plate, then the motor is convertible between different voltages.

• The thermal contacts/thermistors must be in use.

Cables

These are the requirements to follow when you install cables:

• The cables must be in good condition, not have any sharp bends, and not be pinched.

• The cables must not be damaged and must not have indentations or be embossed (with markings, etc.) at the cable entry.

• The cable entry seal sleeve and washers must conform to the outside diameter of the cable.

• The minimum bending radius must not be below the accepted value.

• If using a cable which has been used before, a short piece must be peeled off when reﬁtting it so that the cable entry seal sleeve does not close around the cable at the same point again. If the outer sheath of the cable is damaged, then replace the cable.

Contact a sales or authorized service representative.

• The voltage drop in long cables must be taken into account. The drive unit’s rated voltage is the voltage measured at the cable connection point in the pump.

• For SUBCAB® cables, the twisted pair copper foil must be trimmed.

• All unused conductors must be insulated.

Grounding (earthing)

Grounding (earthing) must be done in compliance with all local codes and regulations.

DANGER: Electrical Hazard

All electrical equipment must be grounded (earthed). Test the ground (earth) lead to verify that it is connected correctly and that the path to ground is continuous.

WARNING: Electrical Hazard

If the power cable is jerked loose, then the ground (earth) conductor must be the last conductor to come loose from its terminal. Make sure that the ground (earth) conductor is longer than the phase conductors at both ends of the cable.

8. Install the stator housing.

9. Install the entry gland screw on the stator housing.

4.2.2 Connect the motor cable to the starter and monitoring equipment

DANGER: Explosion/Fire Hazard

NOTICE:

Thermal contacts are incorporated in the pump.

NOTICE:

Thermal contacts must never be exposed to voltages higher than 250 V, breaking current maximum 5 A. It is recommended that they are connected to 24 V over separate fuses to protect other automatic equipment.

1. If thermal contacts are included in the pump installation, then connect the T1 and T2 control conductors to the monitoring equipment.

2. Connect the mains leads (L1, L2, L3, and ground (earth)) to the starter equipment.

For information about the phase sequence and the color codes of the leads, see Cable charts.

3. Check the functionality of the monitoring equipment: a) Check that the signals and the tripping function work properly.

b) Check that the relays, lamps, fuses, and connections are intact. Replace any defective equipment.

4.2.3 Cable charts

Description

This topic contains general connection information. It also provides cable charts that show connection alternatives for use with different cables and power supply.

WARNING: Electrical Hazard

Risk of electrical shock or burn. You must connect an additional ground- (earth-) fault protection device to the grounded (earthed) connectors if persons are likely to come into contact with liquids that are also in contact with the pump or pumped liquid.

4.2.1 Connect the motor cable to the pump

NOTICE:

Leakage into the electrical parts can cause damaged equipment or a blown fuse. Keep the end of the motor cable dry at all times.

1. Remove the entry gland screw from the stator housing.

2. Remove the stator housing. This provides access to the terminal block/closed end splices.

3. Check the data plate to see which connections are required for the power supply.

4. Arrange the connections on the terminal block/closed end splices in accordance with the required power supply.

5. Connect the mains leads (L1, L2, L3, and ground (earth) ) according to applicable cable chart.

The ground (earth) lead must be 50 mm (2.0 in.) longer than the phase conductors in the junction box of the unit.

6. Make sure that the pump is correctly connected to ground (earth).

7. Make sure that any thermal contacts incorporated in the pump are properly connected to the terminal block/closed end splices.

Figure 4: Phase sequence

Connection locations

The ﬁgures in this section illustrate how to interpret the connection strip symbols.

8 GFK-GFV Series Installation, Operation, and Maintenance Manual

Page 12

L1 L2 L3

T3 T4T1 T2

*YE

GN/YE

U1 V1 W1 W2

WS007735A

1. Stator leads

L1 L2 L3

T3 T4T1 T2

4321

WS004846B

772 17 05/rev4

Motor connection

Colors and marking of main leads

COLOR STANDARD

STATOR LEADS

BN = Brown

U1,U5 = RD

BK = Black

U2,U6 = GN

WH = White

V1,V5 = BN

OG = Orange

V2,V6 = BU

GN = Green

W1,W5 = YE

GN/YE = Green-Yellow

W2,W6 = BK

RD = Red

T1,T2 = WH/YE

GY = Grey BU = Blue YE = Yellow

*SUBCAB AWG * * Ground Conductor is stranded around cores GC=Ground Check

Mains

SUBCAB 7GX

H07RN-F

SUBCAB 4GX

SUBCAB AWG

BK 1

BK 2

BK 3

BK 4

BK 5

BK 6

GN/YE

WS004600E

3 PHASE 6 Leads

*YE

GN/YE

*YE

GN/YE

Y/D

L1:1

L2:1

L3:1

L1:2

L2:2

L3:2

GN/YE

*YE

WS004601B

2. Terminal board

3. Motor cable leads

4. Stator (internal connection illustrated)

4 Installation

Code Description

GNYE Green-Yellow

RD Red

GY Grey

BU Blue

YE Yellow

Colors and marking of leads

Figure 5: Motor connection

3-phase connection

1. Starter equipment and mains leads (L1, L2, L3)

2. Ground (earth)

3. Functional ground

4. Control leads (T1, T2, T3, T4)

5. Thermal contact

6. Leakage detector (LD)

7. Thermistor

8. Level sensor

9. Capacitor

Color code standard

Code Description

BN Brown

BK Black

WH White

OG Orange

GN Green

GFK-GFV Series Installation, Operation, and Maintenance Manual 9

Figure 6: 6 leads

Page 13

Y-

3 PHASE 9 Leads

*YE

GN/YE

Y-SER

*YE

GN/YE

WS004602B

Y-

3 PHASE 12 Leads

*YE

GN/YE

Y-SER

*YE

GN/YE

D-SER

D-

W2 BK

U1 RD

W6 BK

W5 YEL2U2 GN

V1 BN

U6 GN

U5 RDL3V2 BU

W1 YE

V6 BU

V5 BN

GN/YE

*YE

460V

W2 BK

U1 RD

U5 RD

W6 BK

U2 GN

V1 BN

V5 BN

U6 GN

V2 BU

W1 YE

W5 YE

V6 BU

GN/YE

*YE

230V

WS004603C

1 PHASE 4 Leads

1 ~

1/BN

*RD

2/BK

*BK

3/GY

*WH

4/T1

*OG

5/T2

*BU

GN/YE

*YE

Starter

1 PHASE 12 Leads

1 ~

*RD

*BK

*WH

*YE

GN/YE

Starter

1 ~

WS004604B

SENSORS

*IF Y/D-start, sensors not connected

Control

SUBCAB 4GX/7G

SUBCAB AWG

H07RN-F*

WH T1

BK 4

WH T2

BK 5

(Thermal Contacts)

Max. 250V Max.5A Max. 1.6A,cos =0.6 Max. 2.5A,cos =1

WH/YE

Control leads

WH/YE

T1/*OG/4

*SUBCAB AWG

T2/*OG/5

+ LD

Max 12 V

WH YE

WH/YE

Control leads

T1/*OG/4

SMR 311

-5

*SUBCAB AWG

T2/*BU/5

WS004605D

4 Installation

Figure 7: 9 leads

1-phase connection

Figure 9: 4 leads, 12 leads

Sensors connection

The pump is always equipped with thermal contacts incorporated in the stator. The pump can also have an optional water leakage sensor (LD). The leakage sensor is mandatory if the pump has FM approval.

Figure 8: 12 leads

10 GFK-GFV Series Installation, Operation, and Maintenance Manual

Sensor connection characteristics

The values have a 10 % tolerance.

Sensors Value (mA) Deﬁnition

LD and thermal contact

0 Overtemperature

7.8 OK

36 Leakage

Page 14

WS006253B

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5 Operation

4.3 Check the impeller rotation

CAUTION: Crush Hazard

The starting jerk can be powerful. Make sure nobody is close to the unit when it is started.

1. Start the motor.

2. Stop the motor after a few seconds.

3. Check that the impeller rotates according to this illustration.

The correct direction of impeller rotation is clockwise when you look at the pump from above.

4. If the impeller rotates in the wrong direction, then do one of these steps:

– If the motor has a 1-phase connection, then contact a sales or

authorized service representative.

– If the motor has a 3-phase connection, then transpose two phase

leads and do this procedure again.

5 Operation

5.1 Precautions

Before taking the unit into operation, check the following:

• All recommended safety devices are installed.

• The cable and cable entry have not been damaged.

• All debris and waste material has been removed.

NOTICE:

Never operate the pump with the discharge line blocked, or the discharge valve closed.

WARNING: Crush Hazard

Risk of automatic restart.

Distance to wet areas

WARNING: Electrical Hazard

CAUTION: Electrical Hazard

Risk of electrical shock or burn. The equipment manufacturer has not evaluated this unit for use in swimming pools. If used in connection with swimming pools then special safety regulations apply.

Noise level

NOTICE:

The sound power level of the product is lower than 70 dB(A). However, in some installations the resulting sound pressure level may exceed 70 dB(A) at certain operating points on the performance curve. Make sure that you understand the noise level requirements in the environment where the product is installed. Failure to do so may result in hearing loss or violation of local laws.

5.2 Start the pump

CAUTION: Crush Hazard

The starting jerk can be powerful. Make sure nobody is close to the unit when it is started.

NOTICE:

Make sure that the rotation of the impeller is correct. For more information, see Check the impeller rotation.

1. Check the coolant level in the oil housing.

2. Remove the fuses or open the circuit breaker, and check that the impeller can rotate freely.

WARNING: Crush Hazard

Never put your hand into the pump housing.

3. Conduct insulation test phase to ground. To pass, the value must exceed 5 megaohms.

4. Start the pump.

6 Maintenance

Precautions

Before starting work, make sure that the safety instructions in the chapter Introduction and Safety on page 2 have been read and understood.

DANGER: Crush Hazard

Moving parts can entangle or crush. Always disconnect and lock out power before servicing to prevent unexpected startup. Failure to do so could result in death or serious injury.

WARNING: Biological Hazard

Infection risk. Rinse the unit thoroughly with clean water before working on it.

CAUTION: Crush Hazard

Make sure that the unit cannot roll or fall over and injure people or damage property.

Make sure that you follow these requirements:

• Check the explosion risk before you weld or use electrical hand tools.

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

• Make sure that the product and its components have been thoroughly cleaned.

• Make sure that the work area is well-ventilated before you open any vent or drain valves, remove any plugs, or disassemble the unit.

• Do not open any vent or drain valves or remove any plugs while the system is pressurized. Make sure that the pump is isolated from the

GFK-GFV Series Installation, Operation, and Maintenance Manual 11

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WS001763A

WS001764A

6 Maintenance

system and that pressure is relieved before you disassemble the pump, remove plugs, or disconnect piping.

Ground continuity verification

A ground (earth) continuity test must always be performed after service.

Maintenance guidelines

During the maintenance and before reassembly, always remember to perform these tasks:

• Clean all parts thoroughly, particularly O-ring grooves.

• Change all O-rings, gaskets, and seal washers.

• Lubricate all springs, screws, O-rings with grease.

During the reassembly, always make sure that existing index markings are in line.

The reassembled drive unit must always be insulation-tested and the reassembled pump must always be test-run before normal operation.

6.1 Change the coolant

This image shows the plug that is used to change the coolant.

NOTICE:

Do not allow the weight of the pump to rest on any portion of the impeller. The impeller must not be allowed to make contact with the concrete ﬂoor or other hard or rough surfaces.

3. To empty the coolant with the pump in a horizontal position, do the following:

a) Place the pump horizontally, so that the coolant plug is at the

lowest point of the pump, to ensure that the coolant will drain completely.

It is important to empty all of the coolant. b) Place a container under the pump. c) Remove the coolant plug and empty the coolant.

6.1.2 Fill with coolant

Use oil as coolant. The oil should be a parafﬁn oil with viscosity close to ISO VG32. Examples of suitable oil types are the following:

• Statoil MedicWay 32

• BP Enerpar M 004

• Shell Ondina 927

• Shell Ondina X430

1. Fill with coolant. Quantity: approximately 0.4 liters (0.4 quarts)

™

6.1.1 Empty the coolant

CAUTION: Compressed Gas Hazard

Air inside the chamber may cause parts or liquid to be propelled with force. Be careful when opening. Allow the chamber to de-pressurize before removal of the plug.

1. To empty the coolant with the pump upright, do the following: This method is applicable only for pumps without cooling jackets. a) Remove the coolant plug.

b) Use a pump to remove the coolant.

2. If it is necessary to separate the drive unit from the hydraulic unit, then do the following:

a) Carefully open the coolant plugs to relieve any built-up pressure

inside the cooling jacket.

CAUTION: Compressed Gas Hazard

Air inside the chamber may cause parts or liquid to be propelled with force. Be careful when opening. Allow the chamber to de-pressurize before removal of the plug.

b) After venting any built-up pressure in the cooling jacket, re-in-

stall the coolant plugs. c) Remove the pump housing screws. d) Remove the drive unit from the pump housing.

12 GFK-GFV Series Installation, Operation, and Maintenance Manual

2. Replace the O-ring of the coolant plug.

3. Reﬁt the coolant plug and tighten. Tightening torque: 10–40 Nm (7.5–29.5 ft-lbs)

6.2 Service the pump

Type of maintenance

Initial inspection

Purpose Inspection interval

A Xylem-authorized personnel checks the pump condition. From the results, the personnel recommends the intervals for the periodical inspection and overhaul for the installation.

Within the ﬁrst year of operation.

Page 16

6 Maintenance

Type of maintenance

Periodical inspection

Overhaul

NOTICE:

Shorter intervals may be required when the operating conditions are extreme, for example with very abrasive or corrosive applications or when the liquid temperatures exceed 40°C (104°F).

Purpose Inspection interval

The inspection prevents operational interruptions and machine breakdowns. The measures to increase performance and pump efﬁciency are decided for each application. They can include such things as impeller trimming, wear part control and replacement, control of zinc-anodes and control of the stator.

The overhaul lengthens the operating lifetime of the product. It includes the replacement of key components and the measures that are taken during an inspection.

Up to every year Applies to normal ap-

plications and operating conditions at media (liquid) temperatures <40°C (104°F).

Up to every two years Applies to normal ap-

plications and operating conditions at media (liquid) temperatures <40°C (104°F).

6.2.1 Inspection

Service item Action

Cable 1. If the outer jacket is damaged, replace

Connection to power Check that the connections are properly se-

Electrical cabinets Check that they are clean and dry.

Impeller 1. Check the impeller clearance.

Stator housing 1. Drain all liquid, if any.

Insulation Use a megger maximum 1000 V.

Junction box Check that it is clean and dry.

Level regulators Check the condition and functionality.

Lifting device Check that the local safety regulations are

O-rings 1. Replace the coolant plug O-rings.

Personnel safety devices

Rotation direction Check the impeller rotation.

Oil housing Fill with new coolant, if necessary.

Terminal block/ closed end splice

Thermal contacts Normally closed circuit; interval 0–1 ohm.

Voltage and amperage

the cable.

2. Check that the cables do not have any sharp bends and are not pinched.

cured.

2. Adjust the impeller, if necessary.

2. Check the resistance of the leakage sensor.

Normal value approximately 1530 ohms, alarm approximately 330 ohms.

1. Check that the resistance between the ground (earth) and phase lead is more than 5 megohms.

2. Conduct a phase-to-phase resistance check.

followed.

2. Grease the O-rings.

Check the guard rails, covers, and other protections.

Check that the connections are properly tightened/connected.

Check the running values.

6.2.2 Overhaul

The basic repair kit includes O-rings, seals, and bearings.

For an overhaul, do the following in addition to the tasks listed under Inspection.

Service item Action

Support and main bearing

Mechanical seal Replace with new seal units.

Replace the bearings with new bearings.

6.2.3 Service in case of alarm

For information about indication values for sensors, see Sensor connec-

tion characteristics on page 10.

Alarm source Action

LD 1. Check for liquid in the stator housing.

Thermal contact Check the start and stop levels.

Overload protection Check that the impeller can rotate freely.

2. Drain all liquid, if any.

3. Check the mechanical seal unit, the Orings, and the cable entry, if liquid was found.

6.3 Replace the impeller

Required tools:

• 6 hexagon bit adapter with an extension of at least 125 mm (4.92 in.)

• Impeller puller If applicable, contact your local sales and service representative for

correct type and size.

• Rod (wood or copper) for locking the impeller in place, if applicable.

• Two crowbars, if applicable

NOTICE:

• When laying the pump on its side, do not allow the weight of the pump to rest on any portion of the impeller. The impeller must not be allowed to make contact with the concrete ﬂoor or other hard and rough surfaces.

CAUTION: Cutting Hazard

Worn parts can have sharp edges. Wear protective clothing.

6.3.1 Remove the impeller

1. Remove the suction cover: a) Place the pump horizontally.

b) Remove the suction cover screws. c) Remove the suction cover from the pump housing.

2. Remove the impeller: a) Remove the impeller screw.

b) Remove the impeller and the conical sleeve.

6.3.2 Install the impeller

1. Prepare the shaft: a) Polish off any ﬂaws with a ﬁne emery cloth.

The end of the shaft must be clean and free from burrs.

b) Coat the inner conic, the outer cylindrical surfaces, and the

thread of the conical sleeve with a thin layer of grease. The proper lubrication is grease for bearings, for example Exxon

Mobil Unirex N3, Mobil Mobilith SHC 220 or equivalent.

NOTICE:

Surplus grease can cause the impeller to become loose. Remove surplus grease from conical and/or cylindrical surfaces of shafts and/or sleeves.

2. Lubricate the threads of the impeller screw and the washer, if any.

3. Fit the impeller.

GFK-GFV Series Installation, Operation, and Maintenance Manual 13

Page 17

WS007759A

WS007760A

WS001288A

7 Troubleshooting

Impeller type Action

Non-clog Fit the conical sleeve, the washer, and the impeller

screw to the shaft.

Vortex 1. Fit the conical sleeve to the shaft.

2. Fit the impeller and impeller screw to the shaft.

Figure 10: Non-clog impeller

6. Adjust the clearance.

Impeller type

Non-clog Adjust the clearance between the lower edge of the

Vortex No adjustment or clearance check is needed. Go to

Action

impeller and the pump housing by sliding the impeller on the shaft until it touches the pump housing.

step 8 on page 14

Figure 11: Vortex

4. Fasten the impeller.

Impeller type

Non-clog Hand-tighten the impeller screw enough to prevent it

Vortex Fasten the impeller by tightening the impeller screw.

5. Fit the suction cover: a) Lubricate the suction cover screws.

b) Place the suction cover on the pump housing and ﬁt the screws. c) Tighten the screws in a diagonal sequence.

Tightening torque: 9 Nm (6.6 ft-lbs)

d) Check that the impeller rotates freely.

Action

from falling off. Do not fasten the impeller until the clearance has been

adjusted in step 6 on page 14.

Tightening torque: 22 Nm (16 ft-Ibs) Tighten it a further 1/8 turn (45°).

The clearance (A): 0.2–0.8 mm (0.008–0.032 in.)

7. If Non-clog impeller: Fasten the impeller. a) Fasten the impeller by tightening the impeller screw.

Tightening torque: 22 Nm (16 ft-Ibs) Tighten it a further 1/8 turn (45°).

b) Check the clearance (A) between the impeller and the pump

housing. A: 0.2–0.8 mm (0.008–0.032 in.)

8. Check that the impeller can rotate freely.

WARNING: Crush Hazard

Beware of the pinch point hazard between the rotating impeller and the guide pin.

7 Troubleshooting

Introduction

DANGER: Electrical Hazard

Troubleshooting a live control panel exposes personnel to hazardous voltages. Electrical troubleshooting must be done by a qualiﬁed electrician.

Follow these guidelines when troubleshooting:

• Disconnect and lock out the power supply except when conducting checks that require voltage.

• Make sure that no one is near the unit when the power supply is reconnected.

• When troubleshooting electrical equipment, use the following:

– Universal instrument multimeter – Test lamp (continuity tester) – Wiring diagram

14 GFK-GFV Series Installation, Operation, and Maintenance Manual

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7 Troubleshooting

7.1 The pump does not start

DANGER: Crush Hazard

Moving parts can entangle or crush. Always disconnect and lock out power before servicing to prevent unexpected startup. Failure to do so could result in death or serious injury.

NOTICE:

Do NOT override the motor protection repeatedly if it has tripped. Doing so may result in equipment damage.

Cause Remedy

An alarm signal has been triggered on the control panel.

The pump does not start automatically, but can be started manually.

The installation is not receiving voltage.

The impeller is stuck. Clean:

If the problem persists, then contact a sales or authorized service representative.

Always state the serial number of the product, see Product Description on page 4.

Check that:

• The impeller rotates freely.

• The sensor indicators do not indicate an alarm.

• The overload protection is not tripped.

Check that:

• The start level regulator is functioning. Clean or replace if necessary.

• All connections are intact.

• The relay and contactor coils are intact.

• The control switch (Man/Auto) makes contact in both positions.

Check the control circuit and functions.

Check that:

• The main power switch is on.

• There is control voltage to the start equipment.

• The fuses are intact.

• There is voltage in all phases of the supply line.

• All fuses have power and that they are securely fastened to the fuse holders.

• The overload protection is not tripped.

• The motor cable is not damaged.

• The impeller

• The sump in order to prevent the impeller from clogging again.

7.2 The pump does not stop when a level sensor is used

DANGER: Crush Hazard

Moving parts can entangle or crush. Always disconnect and lock out power before servicing to prevent unexpected startup. Failure to do so could result in death or serious injury.

Cause Remedy

The pump is unable to empty the sump to the stop level.

Check that:

• There are no leaks from the piping and/or discharge connection.

• The impeller is not clogged.

• The non-return valve(s) are functioning properly.

• The pump has adequate capacity. For information:

Contact a sales or authorized service representative.

There is a malfunction in the level-sensing equipment.

• Clean the level regulators.

• Check the functioning of the level regulators.

• Check the contactor and the control circuit.

• Replace all defective items.

The stop level is set

Raise the stop level.

too low.

If the problem persists, then contact a sales or authorized service representative.

Always state the serial number of the product, see Product Description on page 4.

7.3 The pump starts-stops-starts in rapid sequence

Cause Remedy

The pump starts due to back-ﬂow which ﬁlls the sump to the start level again.

The self-holding function of the contactor malfunctions.

Check that:

• The distance between the start and stop levels is sufﬁcient.

• The non-return valve(s) work(s) properly.

• The length of the discharge pipe between the pump and the ﬁrst non-return valve is sufﬁciently short.

Check:

• The contactor connections.

• The voltage in the control circuit in relation to the rated voltages on the coil.

• The functioning of the stop-level regulator.

• Whether the voltage drop in the line at the starting surge causes the contactor's selfholding malfunction.

GFK-GFV Series Installation, Operation, and Maintenance Manual 15

If the problem persists, then contact a sales or authorized service representative.

Always state the serial number of the product, see Product Description on page 4.

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8 Technical Reference

7.4 The pump runs but the motor protection trips

DANGER: Crush Hazard

Moving parts can entangle or crush. Always disconnect and lock out power before servicing to prevent unexpected startup. Failure to do so could result in death or serious injury.

NOTICE:

Do NOT override the motor protection repeatedly if it has tripped. Doing so may result in equipment damage.

Cause Remedy

The motor protection is set too low.

The impeller is difﬁcult to rotate by hand.

The drive unit is not receiving full voltage on all three phases.

The phase currents vary, or they are too high.

The insulation between the phases and ground in the stator is defective.

The density of the pumped ﬂuid is too high.

There is a malfunction in the overload protection.

If the problem persists, then contact a sales or authorized service representative.

Always state the serial number of the product, see Product Description on page 4.

Set the motor protection according to the data plate and if applicable the cable chart.

• Clean the impeller.

• Clean out the sump.

• Check that the impeller is properly trimmed.

• Check the fuses. Replace fuses that have tripped.

• If the fuses are intact, then notify a certiﬁed electrician.

Contact a sales or authorized service representative.

1. Use an insulation tester. With a 1000 V DC megger, check that the insulation between the phases and between any phase and ground is > 5 megaohms.

2. If the insulation is less, then do the following:

Contact a sales or authorized service representative.

Make sure that the maximum density is 1100 kg/m3 (9.2 lb/US gal)

• Change the impeller, or

• Change to a more suitable pump

• Contact a sales or authorized service representative.

Replace the overload protection.

7.5 The pump delivers too little or no water

DANGER: Crush Hazard

Moving parts can entangle or crush. Always disconnect and lock out power before servicing to prevent unexpected startup. Failure to do so could result in death or serious injury.

NOTICE:

Do NOT override the motor protection repeatedly if it has tripped. Doing so may result in equipment damage.

Cause Remedy

The impeller rotates in the wrong direction.

• If it is a 3-phase pump, then transpose two phase leads.

• If it is a 1-phase pump, then do the following:

Contact a sales or authorized service representative.

One or more of the valves are set in the wrong positions.

• Reset the valves that are set in the wrong position.

• Replace the valves, if necessary.

• Check that all valves are correctly installed according to media ﬂow.

• Check that all valves open correctly.

The impeller is difﬁcult to rotate by hand.

• Clean the impeller.

• Clean out the sump.

• Check that the impeller is properly trimmed.

The pipes are ob-

To ensure a free ﬂow, clean out the pipes.

structed.

The pipes and joints

Find the leaks and seal them.

leak.

There are signs of

Replace the worn parts. wear on the impeller, pump, and casing.

The liquid level is too low.

• Check that the level sensor is set correctly.

• Depending on the installation type, add a means for priming the pump, such as a foot valve.

If the problem persists, then contact a sales or authorized service representative.

Always state the serial number of the product, see Product Description on page 4.

8 Technical Reference

8.1 Motor data

16 GFK-GFV Series Installation, Operation, and Maintenance Manual

Feature Description

Motor type Squirrel-cage induction motor

Frequency 50 Hz or 60 Hz

Supply 1-phase or 3-phase

Starting method Direct on-line

Page 20

Feature Description

Maximum starts per hour 15 evenly-spaced starts per hour

Code compliance IEC 60034-1

Voltage variation without overheating

Voltage imbalance tolerance 2%

Stator insulation class F (155°C [311°F])

Motor encapsulation

Motor encapsulation is in accordance with IP68.

Application limits

Data Description

Liquid temperature

Liquid density 1100 kg/m³ (9.2 lb per US gal) maximum

pH of the pumped media (liquid)

Depth of immersion

Other For the speciﬁc weight, current, voltage, power rat-

40°C (104°F) maximum

5.5–14 for cast iron pumps

20 m (65 ft) maximum

ings, and speed of the pump, see the data plate of the pump.

±10%, if it does not run continuously at full load

8 Technical Reference

GFK-GFV Series Installation, Operation, and Maintenance Manual 17

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Xylem |’zīləm|

1) The tissue in plants that brings water upward from the roots;

2) a leading global water technology company.

We’re a global team uniﬁed in a common purpose: creating advanced technology solutions to the world’s water challenges. Developing new technologies that will improve the way water is used, conserved, and re-used in the future is central to our work. Our products and services move, treat, analyze, monitor and return water to the environment, in public utility, industrial, residential and commercial building services settings. Xylem also provides a leading portfolio of smart metering, network technologies and advanced analytics solutions for water, electric and gas utilities. In more than 150 countries, we have strong, long-standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise with a strong focus on developing comprehensive, sustainable solutions.

For more information on how Xylem can help you, go to www.xylem.com

Xylem Water Solutions (Shenyang) Co. Ltd. No.4, 11 Jia, Kaifa Road 110141 Shenyang E.T.D.Z Liaoning Province P.R. China Tel: +86-24-25263000 Fax:

887071_3.0_en-US_2018-05_IOM.1305_1.0_en-US_A_GFK-GFV Series

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

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