Xylem Flygt 5530 User manual

Flygt 5530
Installation,
Operation, and
Maintenance Manual

Table of Contents
Introduction and Safety.........................................................................................................................3
Introduction..........................................................................................................................................3
Safety.....................................................................................................................................................3
Safety terminology and symbols....................................................................................................3
Environmental safety........................................................................................................................4
User safety.........................................................................................................................................5
Product warranty...............................................................................................................................6
Transportation and Storage..................................................................................................................7
Inspect the delivery.............................................................................................................................7
Inspect the package.........................................................................................................................7
Inspect the unit..................................................................................................................................7
Transportation guidelines..................................................................................................................7
Precautions........................................................................................................................................7
Position and fastening......................................................................................................................7
Lifting..................................................................................................................................................7
Temperature ranges for transportation, handling and storage....................................................8
Handling at freezing temperature..................................................................................................8
Unit in as-delivered condition.........................................................................................................8
Lifting the unit out of liquid.............................................................................................................8
Storage guidelines..............................................................................................................................9
Storage location................................................................................................................................9
Long-term storage............................................................................................................................9
Product Description.............................................................................................................................10
Pump design......................................................................................................................................10
Parts....................................................................................................................................................11
Monitoring equipment.....................................................................................................................13
Optional sensors.............................................................................................................................13
The data plate....................................................................................................................................13
Product denomination......................................................................................................................14
Installation.............................................................................................................................................15
Install the pump.................................................................................................................................15
Authority regulation.......................................................................................................................15
Fasteners.........................................................................................................................................15
Install with P-installation.................................................................................................................16
Install with S-installation.................................................................................................................17
Make the electrical connections......................................................................................................18
General precautions.......................................................................................................................18
Requirements..................................................................................................................................18
Cables..............................................................................................................................................18
Earthing (Grounding).....................................................................................................................19
Connect the motor cable to the pump........................................................................................19
Connect the motor cable to the starter and monitoring equipment.......................................20
Cable charts....................................................................................................................................21
Check the impeller rotation.............................................................................................................29
Operation..............................................................................................................................................31
Precautions.........................................................................................................................................31
Distance to wet areas........................................................................................................................31
Noise level..........................................................................................................................................31
Table of Contents
Flygt 5530 Installation, Operation, and Maintenance Manual 1

Start the pump...................................................................................................................................31
Maintenance.........................................................................................................................................33
Precautions.........................................................................................................................................33
Maintenance guidelines...................................................................................................................33
Torque values....................................................................................................................................33
Change the oil...................................................................................................................................34
Service the pump..............................................................................................................................35
Inspection........................................................................................................................................35
Major overhaul................................................................................................................................36
Service in case of alarm.................................................................................................................37
Replace the hydraulic parts.............................................................................................................37
Replace the impeller......................................................................................................................37
Replace the wear parts..................................................................................................................40
Replace the agitator.......................................................................................................................43
Troubleshooting...................................................................................................................................45
Introduction.......................................................................................................................................45
The pump does not start..................................................................................................................45
The pump does not stop when a level sensor is used.................................................................46
The pump starts-stops-starts in rapid sequence...........................................................................46
The pump runs but the motor protection trips.............................................................................47
The pump delivers too little or no water........................................................................................47
Technical Reference............................................................................................................................49
Motor data..........................................................................................................................................49
Application limits...............................................................................................................................49
Table of Contents
2 Flygt 5530 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.
Safety
WARNING:
• The operator must be aware of safety precautions to prevent physical injury.
• Any pressure-containing device can explode, rupture, or discharge its contents if it is
over-pressurized. Take all necessary measures to avoid over-pressurization.
•Operating, installing, or maintaining the unit in any way that is not covered in this manual
could cause death, serious personal injury, or damage to the equipment. This includes
any modification to the equipment or use of parts not provided by Xylem. If there is a
question regarding the intended use of the equipment, please contact an Xylem
representative before proceeding.
•This manual clearly identifies 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 Xylem
representative.
CAUTION:
You must observe the instructions contained in this manual. Failure to do so could result in
physical injury, damage, or delays.
Safety terminology and symbols
About safety messages
It is extremely important that you read, understand, and follow the safety messages and
regulations carefully before handling the product. They are published to help prevent
these hazards:
• Personal accidents and health problems
• Damage to the product
• Product malfunction
Introduction and Safety
Flygt 5530 Installation, Operation, and Maintenance Manual 3

Hazard levels
Hazard level Indication
DANGER: A hazardous situation which, if not avoided, will result in
death or serious injury
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
NOTICE:
• A potential situation which, if not avoided, could
result in undesirable conditions
• A practice not related to personal injury
Hazard categories
Hazard categories can either fall under hazard levels or let specific symbols replace the
ordinary hazard level symbols.
Electrical hazards are indicated by the following specific symbol:
Electrical Hazard:
These are examples of other categories that can occur. They fall under the ordinary hazard
levels and may use complementing symbols:
• Crush hazard
• Cutting hazard
•Arc flash hazard
Environmental safety
The work area
Always keep the station clean to avoid and/or discover emissions.
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.
Introduction and Safety
4 Flygt 5530 Installation, Operation, and Maintenance Manual

WARNING:
Do NOT send the product to the Xylem manufacturer if it has been contaminated by any
nuclear radiation. Inform Xylem so that accurate actions can take place.
Electrical installation
For electrical installation recycling requirements, consult your local electric utility.
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 Xylem
representative.
User safety
General safety rules
These safety rules apply:
• Always keep the work area clean.
• Pay attention to the risks presented by gas and vapors in the work area.
•Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash
hazards.
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
Safety equipment
Use safety equipment according to the company regulations. Use this safety equipment
within the work area:
• Hard hat
• Safety goggles, preferably with side shields
• Protective shoes
• 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.
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.
Introduction and Safety
Flygt 5530 Installation, Operation, and Maintenance Manual 5

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 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.
Chemicals or hazardous
fluids on skin 1. Remove contaminated clothing.
2. Wash the skin with soap and water for at least 1 minute.
3. Seek medical attention, if necessary.
Product warranty
Coverage
Xylem undertakes to remedy defects in products from Xylem under these conditions:
• The faults are due to defects in design, materials, or workmanship.
• The faults are reported to an Xylem 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 Xylem-authorized personnel.
• Genuine Xylem parts are used.
• Only Ex-approved spare parts and accessories authorized by Xylem are used in Ex-
approved products.
Limitations
The warranty does not cover defects caused by these situations:
•Deficient maintenance
• Improper installation
•Modifications or changes to the product and installation made without consulting
Xylem
• Incorrectly executed repair work
• Normal wear and tear
Xylem assumes no liability for these situations:
• Bodily injuries
• Material damages
• Economic losses
Warranty claim
Xylem products are high-quality products with expected reliable operation and long life.
However, should the need arise for a warranty claim, then contact your Xylem
representative.
Spare parts
Xylem guarantees that spare parts will be available for 15 years after the manufacture of
this product has been discontinued.
Introduction and Safety
6 Flygt 5530 Installation, Operation, and Maintenance Manual

Transportation and Storage
Inspect the delivery
Inspect the package
1. Inspect the package for damaged or missing items upon delivery.
2. Note any damaged or missing items on the receipt and freight bill.
3. File a claim with the shipping company if anything is out of order.
If the product has been picked up at a distributor, make a claim directly to the
distributor.
Inspect the unit
1. Remove packing materials from the product.
Dispose of all packing materials in accordance with local regulations.
2. Inspect the product to determine if any parts have been damaged or are missing.
3. If applicable, unfasten the product by removing any screws, bolts, or straps.
For your personal safety, be careful when you handle nails and straps.
4. Contact your sales representative if anything is out of order.
Transportation guidelines
Precautions
WARNING:
• Stay clear of suspended loads.
• Observe accident prevention regulations in force.
Position and fastening
The unit can be transported either horizontally or vertically. Make sure that the unit 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.
Transportation and Storage
Flygt 5530 Installation, Operation, and Maintenance Manual 7

Lifting equipment
Lifting equipment is always required when handling the unit. It must fulfill the following
requirements:
•The minimum height (contact Xylem for information) between the lifting hook and the
floor must be sufficient to lift the unit.
• 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 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 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.
NOTICE:
Oversized lifting equipment could cause damage if the unit should stick when being
lifted.
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.
Units equipped with an internal 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). 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.
Follow these guidelines to avoid freezing damage:
Transportation and Storage
8 Flygt 5530 Installation, Operation, and Maintenance Manual

1. Empty all pumped liquid, if applicable.
2. Check all liquids used for lubrication or cooling, both oil and water-glycol mixtures, for
the presence of water. Change if needed.
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.
• Do not place heavy weights on the packed product.
Long-term storage
If the unit is stored more than 6 months, 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.
Transportation and Storage
Flygt 5530 Installation, Operation, and Maintenance Manual 9

Product Description
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 limits that are given in Application limits (page 49). If there is a question
regarding the intended use of the equipment, please contact an Xylem representative
before proceeding.
WARNING:
In explosive or flammable environments, only use Ex- or MSHA-approved pumps.
NOTICE:
Do NOT use the pump 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.
Pressure class
MT Medium head
Product Description
10 Flygt 5530 Installation, Operation, and Maintenance Manual

Parts
12
11
10
6
9
7
8
1
2
4
3
5
WS006182A
13
WS006184A
Position Part Description
1 Motor For information about the motor,
see Motor data (page 49).
2 Monitoring equipment For more information about the
monitoring equipment, see
Monitoring equipment (page 13).
3 Impeller The impeller is a shrouded three-
channel H-impeller.
Product Description
Flygt 5530 Installation, Operation, and Maintenance Manual 11

Position Part Description
4 Flushing plug External flushing of the outer
mechanical seal can be connected
to one of the holes. The other holes
must then be plugged during
flushing.
•Flushing flow: 1.5-4 l/min
(1.6-4.2 quarts/min)
• Pressure of 5m + shut-off
head
For more information, contact your
local Xylem representative.
5 Wear parts • Wear lining
• Wear ring
• Wearing cover
• Suction cover
• Impeller
• Wear protection/plug
6 Gasket Functions as a sealing both between
the pump housing and the
discharge line and between the
pump housing and the wear lining.
7 Mechanical 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 Oil casing A housing with oil that lubricates
and cools the seals, and acts as a
buffer between the pumped fluid
and the drive unit. Pressure buildup
within the oil casing is reduced by
means of a built in air volume.
9 Main bearing The bearing consists of a two row
angular contact ball bearing.
10 Shaft The shaft is stainless steel, with an
integrated rotor.
11 Cooling without cooling jacket The pump is cooled by the ambient
liquid.
12 Support bearing The bearing consists of a single-row
ball bearing.
13 Agitator The agitator stirs the slurry in order
to prevent deposition of material on
the sump bottom. Use of the
agitator is optional.
Product Description
12 Flygt 5530 Installation, Operation, and Maintenance Manual

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 125°C (257°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.
• Information in the junction box shows if the pump is equipped with optional sensors.
Optional sensors
FLS FLS 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 FLS sensor is installed in
the bottom of the stator housing.
CLS CLS is a sensor for detection of water in the oil housing. The sensor initiates an alarm
when the oil contains approximately 35% water. The sensor is installed in the bearing
housing/bearing holder with its sensing part in the oil housing. The CLS sensor is not
applicable to Ex-approved pumps.
NOTICE:
The CLS sensor body is made of glass. Handle the sensor with care.
One CLS and one FLS sensor can be used in the same pump, if they are connected in
parallel.
The data plate
The data plate is a metal label located on the main body of the products. The data plate
lists key product specifications. Specially approved products also have an approval plate.
2
1312 14
22
21
20
17 18 1916159 10 11
8
7
6
5
4
31
23
24
WS006257A
1. Curve code/Propeller code
2. Serial number, see Product denomination (page 14)
3. Product number
4. Country of origin
5. Additional information
6. Phase; type of current; frequency
7. Rated voltage
Product Description
Flygt 5530 Installation, Operation, and Maintenance Manual 13

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
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
WS006265A
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
WS006262A
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
WS006269A
1. Product code
2. Production year
3. Production cycle
4. Running number
Product Description
14 Flygt 5530 Installation, Operation, and Maintenance Manual

Installation
Install the pump
WARNING:
• Electrical shock hazard. Check that the cable and cable entry have not been damaged
during transport before installing the pump.
• Note that special rules apply to installation in explosive atmospheres.
• Make sure that the unit 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.
• Do not install the starter equipment in an explosive zone unless it is explosion-proof
rated.
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.
• 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.
Installation
Flygt 5530 Installation, Operation, and Maintenance Manual 15

Install with P-installation
In the P-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.
WS006259A
Figure 2: P-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
• Cable holder for holding the cable
• 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 casing flange and a bracket
for attaching the guide equipment.
• Fasteners for the discharge connection
• Anchor bolts
1. Install the access frame:
a) Place the access frame in position and align it horizontally.
b) Grout the frame in place.
2. Grout the anchor bolts in place.
Be careful when you align and position the discharge connection in relation to the
access frame.
3. Place the discharge connection in position, and tighten the nuts.
4. 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.
5. Connect the discharge pipe to the discharge connection.
Make sure the rubber gasket in the discharge connection is correctly positioned.
6. Lower the pump along the guide bars.
Installation
16 Flygt 5530 Installation, Operation, and Maintenance Manual

When it reaches the bottom position, the pump automatically connects to the
discharge connection.
7. Secure the motor cable:
a) Fasten the permanent lifting device to the pump and to the access 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 equipment according to
the separate instructions.
Make sure that the impeller rotation is correct. For more information, see Check the
impeller rotation (page 29).
Clean all debris from the sump before starting the pump.
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.
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.
WS006270A
Figure 3: S-installation
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 (page 29).
Installation
Flygt 5530 Installation, Operation, and Maintenance Manual 17

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 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.
• 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.
WARNING:
Do not install the starter equipment in an explosive zone unless it is explosion-proof rated.
CAUTION:
If the pump is equipped with automatic level control and/or internal contactor, there is a
risk of sudden restart.
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 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 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.
Installation
18 Flygt 5530 Installation, Operation, and Maintenance Manual