Operation............................29 Estimate zinc anode replacement intervals................29 Start the pump........................... 30 Maintenance..........................31 Torque values..........................31 Change the oil........................... 32 Service the pump........................33 Inspection..........................33 Major overhaul........................34 Service in case of alarm......................34 Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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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 Flygt 3126.290 Installation, Operation, and Maintenance Manual...
• Personal accidents and health problems • Damage to the product • Product malfunction Hazard levels Hazard level Indication A hazardous situation which, if not avoided, will result in DANGER: death or serious injury Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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. Electrical installation For electrical installation recycling requirements, consult your local electric utility. Recycling guidelines Always recycle according to these guidelines: Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Condition Action Chemicals or hazardous fluids in Hold your eyelids apart forcibly with your fingers. eyes Rinse the eyes with eyewash or running water for at least 15 minutes. Seek medical attention. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
(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 Flygt 3126.290 Installation, Operation, and Maintenance Manual...
However, should the need for a warranty claim arise, contact your local sales and service representative. Spare parts Xylem guarantees that spare parts will be available for 15 years after the manufacture of this product has been discontinued. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
• 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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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• 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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
• 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 Medium head High head Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Fore more information, see External cooling (page 12). Support bearing The bearing consisting of a single-row ball bearing. External cooling Requested items The following items are requested in order to use external cooling: Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
• Explosionproof for use in Class I, Div. 1, Group C and D • Dust ignition proof for use in Class II, Div. 1, Group E, F and • Suitable for use in Class III, Div. 1, Hazardous Locations Flygt 3126.290 Installation, Operation, and Maintenance Manual...
This illustration describes the FM approval plate and the information that is contained in its fields. Temperature class Maximum ambient temperature WS003973A Product denomination Reading instruction In this section, code characters are illustrated accordingly: Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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XXYYYY YYY YYY YYYY Type of Callout Number Indication Type of code Sales denomination Product code Serial number Parameter Hydraulic end Type of installation Sales code Version Production year Production cycle Running number Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Vent the tank of a sewage station in accordance with local plumbing codes. Fasteners • 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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
5. Connect the discharge pipe to the discharge connection. 6. Lower the pump along the guide bars. When it reaches the bottom position, the pump automatically connects to the discharge connection. 7. Secure the motor cable: Flygt 3126.290 Installation, Operation, and Maintenance Manual...
In the T-installation, the pump is installed in a vertical position in a dry well next to the wet sump. These requirements and instructions only apply when the installation is made according to the dimensional drawing. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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Contact a local sales and 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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
2. Prepare the control element: a) Peel the sheath (if applicable) and the copper foil. The copper foil is a screen and is conductive. Do not peel more than necessary, and remove the peeled foil. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Peel the insulation from each power core. 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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
4 A. It is recommended that they are connected to 24 V over separate fuses to protect other automatic equipment. The single phase pumps must be equipped with a starter which has start and run capacitors. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Installation A specially Flygt designed starter is required for the operation of single phase pumps. The connection of the motor cable to the starter is shown in the wiring diagram. 1. If thermal contacts are included in the pump installation, then connect the T1 and T2 control conductors to the monitoring equipment.
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Brown Yellow Yellow Green Yellow Blue Yellow Black Yellow Denomination, motor leads Color BROWN Brown WHITE White GREY Grey BLACK Black YELLOW Yellow GREEN Green Sensor connection Code Color Blue Grey White Yellow Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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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 transpose two phase leads (3- phase) and do this procedure again. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
The recommended interval for the selection fraction is 0.25–0.50 (25–50%). 1. Remove, weigh, and reinstall one or more of the exterior zinc anodes before starting up the pump. 2. After two months, remove and weigh the same zinc anode or anodes again. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Never put your hand into the pump housing. 3. Conduct insulation test phase to ground. To pass, the value must exceed 5 megaohms. 4. Check that the monitoring equipment works. 5. Start the pump. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
If there is a question regarding the tightening torques, please contact the local sales and service representative. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
CAUTION: Compressed Gas Hazard Air inside the chamber may cause parts or liquid to be propelled with force. Be careful when opening. Hold a rag over the plug to prevent liquid from spraying out. WS001519A Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Check that the cables do not have any sharp bends and are not pinched. Connection to power Check that the connections are properly tightened. Electrical cabinets Check that they are clean and dry. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Check the start and stop levels. Check that the cooling jacket is not clogged. Clean if necessary. Check the coolant level (pump with cooling jacket). Check the start and stop levels. Replace the impeller Required tools: Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Remove the impeller: C, D CAUTION: Cutting Hazard Worn parts can have sharp edges. Wear protective clothing. 1. Remove the pump housing or the suction cover. 2. Remove the impeller screw. If applicable, use the rod. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
If applicable, use the rod. Tightening torque: 90 Nm (66 ft-lbs) Check that the impeller can rotate freely. 3. Mount the suction cover (if applicable): a) Fit a new lubricated O-ring to the suction cover. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
Measure the distance between the edge of the impeller and the pump housing cover. The correct distance should be 0.5-1.5 mm (0.02-0.06 in). Add or remove the appropriate number of adjusting washers in order to achieve correct distance. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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Fit the suction cover to the studs. c) Fit the lock nuts onto the studs. d) Tighten the nuts. WS001937A 5. Adjust the suction cover: a) Measure the distance between the impeller and the suction cover. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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Maintenance WS002105A b) Tighten the nuts. WS001937A 6. Raise the pump to a vertical position. Check that the impeller can rotate freely. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
• 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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
To ensure a free flow, clean out the pipes. The pipes and joints leak. Find the leaks and seal them. There are signs of wear on the Replace the worn parts. impeller, pump, and casing. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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• 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. Always state the serial number of your product, see Product Description (page 11). Flygt 3126.290 Installation, Operation, and Maintenance Manual...
3–14 for stainless steel pumps (liquid) Depth of immersion 20 m (65 ft) maximum Other For the specific weight, current, voltage, power ratings, and speed of the pump, see the data plate of the pump. Flygt 3126.290 Installation, Operation, and Maintenance Manual...
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