ITT Flygt 5150.350 User manual

Water & Wastewater
Installation, Operation, and
Maintenance Manual
Flygt 5150.350, 5150.360

Table of Contents
Introduction and Safety...................................................................................................................................................3
Introduction.......................................................................................................................................................................3
Inspect the delivery........................................................................................................................................................3
Product warranty............................................................................................................................................................3
Safety...................................................................................................................................................................................4
Safety message levels.....................................................................................................................................................4
User safety.......................................................................................................................................................................5
Ex-approved products...................................................................................................................................................6
Environmental safety.....................................................................................................................................................7
Transportation and Storage............................................................................................................................................8
Transportation guidelines.................................................................................................................................................8
Precautions......................................................................................................................................................................8
Position and fastening...................................................................................................................................................8
Lifting...............................................................................................................................................................................8
Storage guidelines..............................................................................................................................................................8
Storage location..............................................................................................................................................................8
Freezing precautions......................................................................................................................................................9
Long-term storage..........................................................................................................................................................9
Product Description........................................................................................................................................................10
Pump design.....................................................................................................................................................................10
Parts...................................................................................................................................................................................11
External cooling..............................................................................................................................................................12
Monitoring equipment....................................................................................................................................................12
Optional sensors..........................................................................................................................................................12
The data plate...................................................................................................................................................................13
Approvals..........................................................................................................................................................................13
Product denomination....................................................................................................................................................15
Installation.........................................................................................................................................................................16
Install the pump...............................................................................................................................................................16
Authority regulation.....................................................................................................................................................16
Fasteners........................................................................................................................................................................16
Install with S-installation.............................................................................................................................................16
Make the electrical connections....................................................................................................................................17
General precautions.....................................................................................................................................................17
Requirements................................................................................................................................................................18
Cables.............................................................................................................................................................................18
Earthing (Grounding).................................................................................................................................................18
Connect the motor cable to the pump.....................................................................................................................19
Connect the motor cable to the starter and monitoring equipment....................................................................19
Cable charts...................................................................................................................................................................20
Check the impeller rotation...........................................................................................................................................25
Operation...........................................................................................................................................................................26
Precautions.......................................................................................................................................................................26
Distance to wet areas......................................................................................................................................................26
Noise level........................................................................................................................................................................26
Start the pump.................................................................................................................................................................26
Table of Contents
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 1

Maintenance......................................................................................................................................................................27
Precautions.......................................................................................................................................................................27
Maintenance guidelines..................................................................................................................................................27
Torque values...................................................................................................................................................................27
Change the coolant.........................................................................................................................................................28
Empty the coolant.......................................................................................................................................................29
Fill with coolant............................................................................................................................................................30
Replace the hydraulic parts............................................................................................................................................31
Replace the impeller.....................................................................................................................................................31
Replace the agitator......................................................................................................................................................36
Service the pump.............................................................................................................................................................37
Inspection......................................................................................................................................................................37
Major overhaul..............................................................................................................................................................38
Service in case of alarm...............................................................................................................................................38
Troubleshooting...............................................................................................................................................................40
Introduction.....................................................................................................................................................................40
The pump does not start................................................................................................................................................40
The pump does not stop when a level sensor is used...............................................................................................41
The pump starts-stops-starts in rapid sequence.........................................................................................................41
The pump runs but the motor protection trips..........................................................................................................41
The pump delivers too little or no water.....................................................................................................................42
Technical Reference........................................................................................................................................................44
Motor data........................................................................................................................................................................44
Application limits............................................................................................................................................................44
Table of Contents
2 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual

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 delivery
Inspect the package
1. Inspect the package for damaged or missing items upon delivery.
2. Note any damaged or missing items on the receipt and freight bill.
3. File a claim with the shipping company if anything is out of order.
If the product has been picked up at a distributor, make a claim directly to the distributor.
Inspect the unit
1. Remove packing materials from the product.
Dispose of all packing materials in accordance with local regulations.
2. Inspect the product to determine if any parts have been damaged or are missing.
3. If applicable, unfasten the product by removing any screws, bolts, or straps.
For your personal safety, be careful when you handle nails and straps.
4. Contact your sales representative if anything is out of order.
Product warranty
Coverage
ITT undertakes to remedy faults in products from ITT under these conditions:
• The faults are due to defects in design, materials, or workmanship.
• The faults are reported to an ITT 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 ITT-authorized personnel.
• Genuine ITT parts are used.
• Only Ex-approved spare parts and accessories authorized by ITT 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 ITT
Introduction and Safety
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 3

• Incorrectly executed repair work
• Normal wear and tear
ITT assumes no liability for these situations:
• Bodily injuries
• Material damages
• Economic losses
Warranty claim
ITT products are high-quality products with expected reliable operation and long life. However, should the
need arise for a warranty claim, then contact your ITT representative.
Spare parts
ITT guarantees that spare parts will be available for 15 years after the manufacture of this product has
been discontinued.
Safety
WARNING:
• The operator must be aware of safety precautions to prevent physical injury.
• Any pressure-containing device can explode, rupture, or discharge its contents if it is over-pressurized.
Take all necessary measures to avoid over-pressurization.
• Operating, installing, or maintaining the unit in any way that is not covered in this manual could cause
death, serious personal injury, or damage to the equipment. This includes any modification to the
equipment or use of parts not provided by ITT. If there is a question regarding the intended use of
the equipment, please contact an ITT 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 ITT 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 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
• Product malfunction
Definitions
Safety message level Indication
DANGER:
A hazardous situation which, if not avoided, will
result in death or serious injury
Introduction and Safety (Continued)
4 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual

Safety message level Indication
WARNING:
A hazardous situation which, if not avoided, could
result in death or serious injury
CAUTION:
A hazardous situation which, if not avoided, could
result in minor or moderate injury
Electrical Hazard:
The possibility of electrical risks if instructions are
not followed in a proper manner
NOTICE: • A potential situation which, if not avoided,
could result in undesirable conditions
• A practice not related to personal injury
User safety
General safety rules
These safety rules apply:
• Always keep the work area clean.
• Pay attention to the risks presented by gas and vapors in the work area.
• Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash hazards.
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
Safety equipment
Use safety equipment according to the company regulations. Use this safety equipment within the work area:
• Helmet
• Safety goggles, preferably with side shields
• Protective shoes
• Protective gloves
• Gas mask
• 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.
Introduction and Safety (Continued)
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 5

Hazardous liquids
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 work with biologically hazardous liquids are vaccinated against
diseases to which they may be exposed.
• Observe strict personal cleanliness.
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... Then...
Eyes 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.
Skin 1. Remove contaminated clothing.
2. Wash the skin with soap and water for at least one minute.
3. Seek medical attention, if required.
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 ITT-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
(including IEC/EN 60079-17).
ITT 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.
• The Ex-approved product must never run dry 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.
• Make sure that thermal contacts are connected to a protection circuit according to the approval
classification of the product, and that they are in use.
• 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 authorized ITT representative.
• Only use parts that are provided by an authorized ITT representative.
ATEX guidelines
ATEX 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 ITT representative. When you install or maintain ATEX-
compliant equipment, always comply with the directive and applicable standards in IEC/EN 60079–14.
Introduction and Safety (Continued)
6 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual

Permitted liquid level for ATEX
See the dimensional drawings of the product for the minimum permitted liquid level according to the
ATEX approval. 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. Condition-monitoring devices include but are not
limited to the following:
• Level indicators
• Temperature detectors
Environmental safety
The work 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 ITT 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.
• Clean up all spills in accordance with safety and environmental procedures.
• Report all environmental emissions to the appropriate authorities.
Electrical installation
For electrical installation recycling requirements, consult your local electric utility.
Introduction and Safety (Continued)
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 7

Transportation and Storage
Transportation guidelines
Precautions
WARNING:
• Stay clear of suspended loads.
• Observe accident prevention regulations in force.
Position and fastening
The pump can be transported either horizontally or vertically. Make sure that the product is securely
fastened during transportation, and cannot roll or fall over.
Lifting
WARNING:
• Crush hazard. The unit and the components can be heavy. Use proper lifting methods and wear steel-
toed shoes at all times.
• Lift and handle the product carefully, using suitable lifting equipment.
• The product must be securely harnessed for lifting and handling. Use eyebolts or lifting lugs if available.
• Always lift the unit by its lifting handle. Never lift the unit by the motor cable or by the hose.
• Do not attach sling ropes to shaft ends.
Lifting equipment
Lifting equipment is always required when handling the pump. It must fulfill the following requirements:
• The minimum height (contact ITT for information) between the lifting hook and the floor must be
sufficient to lift the pump.
• The lifting equipment must be able to hoist the pump straight up and down, preferably without the
need for resetting the lifting hook.
• The lifting equipment must be securely anchored and in good condition.
• The lifting equipment must support weight of the entire assembly and must only be used by
authorized personnel.
• Two sets of lifting equipment must be used to lift the pump for repair work.
• The lifting equipment must be dimensioned to lift the pump with any remaining pumped media in it.
• The lifting equipment must not be oversized.
NOTICE:
Oversized lifting equipment could cause damage if the unit should stick when being lifted.
Storage guidelines
Storage location
The product must be stored in a covered and dry location free from heat, dirt, and vibrations.
Transportation and Storage
8 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual

NOTICE:
• Protect the product against humidity, heat sources, and mechanical damage.
• Do not place heavy weights on the packed product.
Freezing precautions
The pump is frost-proof while operating or immersed in liquid, but the impeller/propeller and the shaft
seal may freeze if the pump is lifted out of the liquid into a surrounding temperature below freezing.
Follow these guidelines to avoid freezing damage:
When Guideline
Before storage • The pump must be allowed to run for a short time after raising it
to discharge remaining pumped liquid.
• The discharge opening must be covered in a suitable way, or
placed facing down so that any still remaining pumped liquid runs
out.
• If present, the cooling jacket must be drained manually by
opening the air vent screws at the top of the cooling jacket.
After storage If the impeller/propeller is frozen, it must be thawed by immersing
the pump in liquid before operating the pump.
NOTICE:
Never use a naked flame to thaw the unit.
Long-term storage
If the pump is stored more than 6 months, the following apply:
• Before operating the pump 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.
Transportation and Storage (Continued)
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 9

Product Description
Pump design
The pump is submersible, and driven by an electric motor.
Intended use
WARNING:
In explosive or flammable environments, only use Ex- or MSHA-approved pumps.
NOTICE:
Do NOT use the pump in highly corrosive liquids.
For information about pH, see Application limits (page 44).
Spare parts
• Modifications to the unit or installation should only be carried out after consulting with ITT.
• Original spare parts and accessories authorized by ITT are essential for compliance. The use of other
parts can invalidate any claims for warranty or compensation. For more information contact your ITT
representative.
Pressure class
MT Medium head
Product Description
10 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual

Parts
12
13
11
10
9
8
7
Figure 1: Without cooling jacket
1
2
3
5
6
4
Figure 2: With cooling jacket
14
Position Part Description
1 Coolant plugs Use the coolant plugs in order to change the coolant in the cooling jacket.
You can replace coolant plugs with fittings for external cooling. For more
information, see External cooling (page 12).
2Motor For information about the motor, see Motor data (page 44).
3Cooling with
cooling jacket The motor is cooled by a closed loop system. An integrated coolant pump
circulates the coolant whenever the pump is operated. The cooling jacket
can also be used with a external cooling system. For more information, see
External cooling (page 12).
4Monitoring
equipment
For more information about the monitoring equipment, see Monitoring
equipment (page 12).
5 Flow diffuser Provides heat transfer from the coolant to the pumped media (liquid).
6Impeller The impeller is a shrouded three-channel H-impeller.
Product Description (Continued)
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 11

Position Part Description
7Mechanical seals One inner and one outer seal in a combination of materials:
• Tungsten carbide
• Silicon carbide RSiC
• Aluminium oxide Al2O3
• Corrosion-resistant cemented carbide WCCR
8 Seal housing Includes a coolant that lubricates and cools the seals; the housing acts as a
buffer between the pumped liquid and the electric motor.
9 Inspection
chamber
The inspection chamber is equipped with a FLS10 leakage sensor in order
to prevent damages on the motor.
10 Main bearing The bearing consists of a two row angular contact ball bearing.
11 Shaft The shaft is stainless steel, with an integrated rotor.
12 Cooling without
cooling jacket
The pump is cooled by the ambient liquid.
13 Support bearing The bearing consists of a two-row ball bearing.
14 Agitator The agitator stirs the slurry in order to prevent deposition of material on the
sump bottom. Use of the agitator is optional.
External cooling
The following items are required in order to use external cooling:
• Cooling jacket
• Inlet/outlet pipes with M16 threads (replacing the coolant plugs)
• External cooling system (hose, water source, etc.)
Contact your local ITT representative for more information.
Monitoring equipment
The following applies to the monitoring equipment of the pump:
• The stator incorporates three thermal contacts connected in series that activate the alarm and stops
the pump at overtemperature
• The thermal contacts open at 140°C (285°F).
• Ex-approved pumps must have thermal contacts connected to the control panel.
• The sensors must be connected to either the MiniCAS II monitoring equipment or an equivalent
equipment.
• The monitoring equipment must be of a design that makes automatic restart impossible.
• The pump is supplied with an inspection sensor FLS10 for sensing the presence of any liquid in the
inspection chamber.
• The label in the junction box shows if the pump is equipped with optional sensors.
Optional sensors
Thermistor Thermistors are optional sensors for measuring the temperature. They are connected in
series in the stator and activate the alarm at overtemperature. The sensors are only optional
for standard pumps.
NOTICE:
Thermistor must never be exposed to voltages higher than 2.5 V. If the voltage exceeds this
value, for example when the control circuit is tested, the thermistors will be destroyed.
Product Description (Continued)
12 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual

The data plate
The data plate is a metal label located on the main body of the pump. The data plate lists key product
specifications. Explosion-proof products also have an approval plate. Both are described below.
2
1312 14
22
21
20
17 18 1916159 10 11
8
7
6
5
4
3 1
23
24
1. Curve code/Propeller code
2. Serial number, see Product denomination (page 15)
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 3: The data plate
Approvals
This section describes the EN and FM approvals that explosion-proof products have. For more
information, please contact your ITT representative. In addition to the data plate, explosion-proof
products also have either an EN or a FM approval plate.
EN
• European Norm
• ATEX Directive
• EN 50014, EN 50018, EN 1127-1
• II 2 G EEx d IIB T3
• I M2 EEx d I
Product Description (Continued)
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 13

1 2 3
4
5
6 7 89 10
12
11
13
14
15
1. Approval
2. Approval authority + approval number
3. Approval for Class I
4. Approved drive unit
5. Stall time
6. Starting current/Rated current
7. Duty class
8. Duty factor
9. Input power
10. Rated speed
11. Controller
12. Additional information
13. Maximum ambient temperature
14. Serial number
15. ATEX marking
Figure 4: EN approval plate
EN approval for cable entry:
• Certificate number: INERIS 02ATEX9008 U
• II 2 G or IM2 EEx d IIC or EEx dI
FM
This illustration describes the approval plate for Factory Mutual (FM) and the information contained in its
fields.
1
2
1. Temperature class
2. Maximum ambient temperature
Figure 5: FM approval plate
Product Description (Continued)
14 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual

Product denomination
Sales denomination
The sales denomination consists of the four-digit sales code and two letters that indicate the hydraulic end
and type of installation.
This is an example of a sales denomination, and an explanation of its parts.
1
NP 3085
2 3
1. Hydraulic part
2. Installation type
3. Sales code
Product code
The product code consists of nine characters divided into two parts.
This is an example of a product code, and an explanation of its parts.
3085.183
1 2
NP
1. Sales denomination
2. Version
Serial number
The serial number is used for identification of an individual product, and is divided into four parts.
This is an example of a serial number, and an explanation of its parts.
1
NP 3085.183 - 951 0163
2 3 4
1. Product code
2. Production year
3. Production cycle
4. Running number
Product Description (Continued)
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 15

Installation
Install the pump
WARNING:
• Before installing the pump, check that the cable and cable entry have not been damaged during
transportation.
• Note that special rules apply to installation in explosive atmospheres.
• Make sure that the pump cannot roll or fall over and injure people or damage property.
• Do not install CSA-approved products in locations that are classified as hazardous in the national
electric code, ANSI/NFPA 70-2005.
NOTICE:
• Do not run the pump dry.
• Never force piping to make a connection with a pump.
• Always remove all debris and waste material from the sump, inlet piping, and discharge connection,
before you install the pump.
These requirements apply:
• Use the pump dimensional drawing in order to ensure proper installation.
• In S-, T-, and Z-installations the pump must be equipped with cooling jacket
• Provide a suitable barrier around the work area, for example, a guard rail.
• Check the explosion risk before you weld or use electric hand tools.
• Always check the impeller rotation before lowering the pump into the pumped liquid.
Authority regulation
Vent the tank of a sewage machine station in accordance with local plumbing codes.
Fasteners
WARNING:
• Only use fasteners of the proper size and material.
• Replace all corroded fasteners.
• Make sure that all fasteners are properly tightened and that there are no missing fasteners.
Install with S-installation
In the S-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.
Installation
16 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual

These requirements and instructions only apply when the installation is made according to the dimensional
drawing. For information about the different installation types, see Parts List.
Figure 6: S-installation
1. Run the cable so that it has no sharp bends, 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
(page 25).
Make the electrical connections
General precautions
Electrical Hazard:
• A certified electrician must supervise all electrical work. Comply with all local codes and regulations.
• Before starting work on the pump, make sure that the pump and the control panel are isolated from
the power supply and cannot be energized. This applies to the control circuit as well.
• Leakage into the electrical parts can cause damaged equipment or a blown fuse. Keep the end of the
motor cable above the liquid level.
• Make sure that all unused conductors are insulated.
• 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.
CAUTION:
If the pump is equipped with automatic level control and/or internal contactor, there is a risk of sudden
restart.
Installation (Continued)
Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual 17

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, the connected voltage is specified by a yellow sticker close to the
cable entry.
• The fuses, short-circuit, 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 if applicable the cable chart. The starting current in direct-on-line starting 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, the pump must be provided with monitoring equipment
supporting such operation.
• The motor is convertible between different voltages, as stated on the data plate. This conversion is
done on the terminal board.
• The thermal contacts must be in use.
• FM-approved pumps must be provided with FLS due to the approval requirements.
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 sheathing 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 an ITT service shop.
• The voltage drop in long cables must be taken into account. The drive unit’s rated voltage is the
voltage measured at the terminal board in the upper part of the pump.
• The screened cable must be used according to the European CE requirements if a Variable Frequency
Drive (VFD) is used. For more information, contact your ITT representative (VFD-supplier).
Earthing (Grounding)
Electrical Hazard:
• 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.
• If the motor cable is jerked loose by mistake, the earth (ground) conductor should be the last
conductor to come loose from its terminal. Make sure that the earth (ground) conductor is longer
than the phase conductors. This applies to both ends of the motor cable.
• Risk of electrical shock or burn. You must connect an additional earth- (ground-) fault protection
device to the earthed (grounded) connectors if persons are likely to come into physical contact with
the pump or pumped liquids.
Installation (Continued)
18 Flygt 5150.350, 5150.360 Installation, Operation, and Maintenance Manual