TRACKED CHANGES TRACKED CHANGES CODE INDEX DATE INITIALS NATURE OF TRANSLATIONS PAGES DGBXXT09049 03/2023 Creation Please note all changes and pages associated. For further clarity, please add a line in front of each change...
SUMMARY TRACKED CHANGES TRACKED CHANGES SUMMARY INTRODUCTION INTRODUCTION ABOUT THIS MANUAL Contents & updates SAFETY SAFETY SIGNALS A signal word Engine - Genset Safety Icons SAFETY PRECAUTIONS Hot Exhaust Precautions Work In Ventilated Area Waste Disposal Unwanted Engine Start Safe Maintenance Practice Work In Clean Area Protective Clothing Service Engines Safely...
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SUMMARY Operating in Warm Temperature Climates Water Quality for Mixing with Coolant Concentrate Testing Coolant Freeze Point LUBRICANTS Engine Oil and Filter Service Intervals — Tier 3 and Stage IIIA — OEM Applications Diesel Engine Oil — Tier 3 and Stage IIIA Oil Filters Fuel Filters Alternative and Synthetic Lubricants...
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SUMMARY Maintenance Routine maintenance Extraordinary maintenance Tightening torque table TROUBLE SHOOTING STORAGE STORAGE PROCEDURE Long-term storage Long-term storage procedure Batteries S11 TROUBLE SHOOTING TROUBLE SHOOTING The engine is difficult to start Low power output Sudden engine stop Exhaust smoke too black Emergency engine stop Engine overheating...
Record the motor serial numbers and option codes (if applicable). Your Nanni agent also needs these numbers when ordering parts. File the identification numbers in a secure place. Some engine accessories, such as air filters and some instruments, are optional.
NANNI dealer will be happy to inform you of i.e., anyone renting, borrowing or buying the engine from the correct maintenance and operating procedures.
SAFETY SAFETY SAFETY SIGNALS A signal word Engine - Genset Safety Icons SAFETY PRECAUTIONS Hot Exhaust Precautions Work In Ventilated Area Waste Disposal Unwanted Engine Start Safe Maintenance Practice Work In Clean Area Protective Clothing Service Engines Safely Proper Use Of Tools Support Engines Properly Safe Illuminated Work Area Proper Lifting Equipment...
If you do not understand any part of this Replace missing or damaged safety signs. There can document and need assistance, contact be additional safety information contained on parts your NANNI representative. and components sourced from suppliers that is not reproduced in this Operator Manual. Read Safety Instruction Carefully read all safety messages in this manual and on your genset safety signs.
SAFETY SAFETY PRECAUTIONS ENGINE - GENSET SAFETY ICONS Some stickers are fixed directly on the engine. They are HOT EXHAUST PRECAUTIONS intended to help you to quickly identify the location of certain components and avoid possible hazards when working on the engine. Servicing machine or attachments with engine running can result in serious Ensure that these stickers are always visible and replace...
SAFETY SAFE MAINTENANCE PRACTICE PROPER USE OF TOOLS Understand service procedures before Use tools appropriate to the work. doing work. Keep work area clean and dry. Makeshift tools and unfollowed procedures Never lubricate, service, or adjust engine can create safety hazards. Do not use U.S while it is running.
SAFETY NOISE PROTECTION Paint removal : • Remove paint a minimum of 100 mm (4 in.) from area to be affected by heating. If paint cannot be Prolonged exposure to loud noise can removed, wear an approved respirator mask before cause impairment or loss of hearing.
SAFETY SAFE COOLING SYSTEM SERVICE STATIC ELECTRICITY RISK Explosive release of fluids from pressurized cooling system can cause serious burns. Shut off engine. Only remove filler cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve The removal of sulphur and other compounds in pressure before removing completely.
SAFETY HANDLE STARTING FLUID SAFELY (ETHER) If acid is spilled on skin or in eyes: Starting fluid is highly flammable. Keep all sparks and flame away if using it. Keep starting fluid away from batteries and cables. • Flush skin with water To prevent accidental discharge when storing the •...
SAFETY LIVE WITH SAFETY Before returning engine to customer, make sure engine is functioning properly, especially the safety systems. Make sure that all guards and shields are in place. PREVENT ACCIDENTS When engine is OFF, always set the trans- mission lever to neutral position.
10 000 mg/kg (10 000 ppm). E-Diesel fuel DO NOT use E-Diesel (Diesel fuel and ethanol blend). Use of E-Diesel fuel in any NANNI engines may void the machine warranty CAUTION ! Avoid severe injury or death due to the fire and explosion risk from using E-Diesel fuel.
• BEFORE using diesel fuel with sulfur content great- er than 5000 mg/kg (5000 ppm), contact your NANNI dealer. IMPORTANT! Make sure the diesel fuel used in your machine demon- Sulfur Content for Other Engines strates good lubricity characteristics.
Monitor water content of the fuel regularly. Paraffin-based fuel that complies with European stand- ard EN15940 can be used for all NANNI Kubota bases en- When using biodiesel fuel, the fuel filter may require more gines including EU Stage V.
EN590 or ASTM D975 or equivalent specification. with appropriate governmental authorities prior to using biofuels. IMPORTANT! Biodiesel is not recommended by NANNI. Raw pressed vegetable oils are NOT acceptable for use as fuel in any concentration in NANNI engines. Their use could cause engine failure.
Use of fabric, cardboard, or solid winter-fronts is not rec- a lower pour point. ommended with any NANNI engine. Their use can result Cloud point is the temperature at which wax begins to in excessive engine coolant, oil, and charge air tempera- form in the fuel.
Warranties, including the recommended engine coolants. emissions warranty, are not conditioned on the use of NANNI coolants, parts or service Always use a recommended engine coolant, even when operating in geographical areas where freeze protection RECOMMENDED COOLANTS is not required.
FLUIDS WATER QUALITY FOR MIXING WITH COOL- TESTING COOLANT FREEZE POINT ANT CONCENTRATE The use of a hand-held coolant refractometer is the quickest, easiest, and most accurate method to determine Engine coolants are a combination of three chemical coolant freeze point. This method is more accurate than components: ethylene glycol (EG) or propylene glycol (PG) a test strip or a float-type hydrometer which can produce antifreeze, inhibiting coolant additives, and quality water.
Use oil analysis to evaluate the condition of the oil and to aid in selection of the proper oil and filter service interval. Contact your NANNI dealer or other qualified service pro- vider for more information on engine oil analysis.
OIL FILTERS IIIA Filtration of oils is critically important for proper opera- tion and lubrication. NANNI brand oil filters have been de- Failure to follow applicable oil standards and drain inter- signed and produced specifically for NANNI applications. vals can result in severe engine damage that might not be covered under warranty.
The temperature limits and service intervals shown in this change engine fuel filters as specified in this manual. manual apply to NANNI branded fluids or fluids that have been tested and/or approved for use in NANNI equipment. Re-refined base stock products may be used if the fin-...
Store containers mance. on their side to avoid water and dirt accumulation. Consult your NANNI dealer to obtain specific information Make certain that all containers are properly marked to and recommendations. identify their contents.
Inquire on the proper way to recycle or dis- pose of waste from your local environmen- tal or recycling center, or from your Nanni engine representative or service dealer.
Depending of type of engine, identification plate are as follows : 1 : Type of engine 2 : Engine serial number 3 : Engine code 4 : Nanni engine serial number Or : Indicates commercial designation of the engine.
The engine type can be exhaust emission certified. It Nanni designs its engines to have minimum environmen- means that Nanni guarantees that all engines of the same tal impact. This objective, however, can only type that are manufactured are approved and certified be achieved with your full cooperation.
Nanni representative. NOTE! Late or improper maintenance or use of spare parts other than NANNI original spare parts will invalidate NANNI’s responsibility for the engine accordance with homologa- tion and will void the Warranty. Modifications to the engine’s settings, as well as any oth-...
Emissions Label. vessel. When installed in accordance with the manufacturer’s instructions, Nanni Industries Marine Diesel Propulsion NOTE! Engines without integral exhaust certified under Direc- tive 97/68/EC as amended by Directive 2004/26/EC pro-...
COMPONENTS COMPONENTS GENSET MAIN COMPONENTS List of components View N°1 of the generator set View N°2 of the generator set View N°3 of the generator set...
COMPOSANTS GENSET MAIN COMPONENTS LIST OF COMPONENTS NOTE! Minor details may differ from those shown. Some components may not be included in the order. Illustrations are not contractual. Items COMPONENTS Engine alternator Alternator belt Starter motor Control panel connector Air filter Fuel filter Coolant drain valve Fuel injection pump...
COMPOSANTS VIEW N°3 OF THE GENERATOR SET NOTE! • Always lift the generating set in using the lifting eyelets. Adjust the lifting slings to lift the unit horizontally. • For safety and operational reasons, never insert any objects or block the vents of the generator. •...
STARTING & RUNNING STARTING & RUNNING COMMAND PANEL Si-2 Description of the generator set control panel DISPLAY SCREENS & PAGES STRUCTURES STARTING & USE Starting and stop buttons BEFORE STARTING Fuel system Raw water Electric system PRELIMINARY CHECKS STARTING THE GENSET Cold climate start-up Starting with back-up batteries RUNNING...
STARTING & RUNNING COMMAND PANEL SI-2 FAULT RESET button. Use this button to ac- knowledge alarms and deactivate the horn output. Inactive alarms will disappear im- This panel integrates all the information necessary for the mediately and status of active alarms will be operation and monitoring of the generator set.
STARTING & RUNNING DISPLAY SCREENS & PAGES MAIN SCREEN STRUCTURES The displayed information is structured into “pages” and “screens”. Use PAGE button to switch over the pages. MAIN SCREEN • The page Measurement consists of screens which display measured values like voltages, current, oil pressure etc., computed values like i.e.
STARTING & RUNNING BEFORE STARTING RAW WATER The raw water system cools the engine coolant and the FUEL SYSTEM exhaust gases. Fuel is drawn from the tank by the fuel feed pump and The raw water is drawn into the heat exchanger by the injected into the combustion chamber by the injection engine’s raw water pump.
STARTING & RUNNING PRELIMINARY CHECKS ELECTRIC SYSTEM The electrical harness of the generating set must be kept DANGER! away from any splash of water and must be correctly fixed as high as possible in the hold. All covers must be put back in place beore starting the genset.
Turn on the engine coolant heater for at least 2 hours be- fore starting the engine. Additional information on cold weather operation is available from your Nanni engine distributor or authorized dealer. Synthetic oils improve flow at low temperatures, espe- Beware of polarities ! cially in Arctic conditions.
If it is not possible to stop the generator during navigation or to repair it, try to reduce the load delivered by the gen- erator and check the whole system once back in port. If necessary, consult your local Nanni representative. 3. 3. Inspect the generator set for leaks.
STARTING & RUNNING CAUTION! Do not forget to open the sea cock before restarting the group. COLD CLIMATE PRECAUTIONS See maintenance chapter fore more details. CAUTION! Keep the battery fully charged. An improperly charged battery may burst due to freezing.
S 07 MAINTENANCE S 07 MAINTENANCE GENERATOR SET MAINTENANCE AbOuT ThIS MANuAl GENERAlITIES MAINTENANCE INTERvAlS ChECkING ThE ENGINE OIl lEvEl Engine oil level ChECkING ThE ENGINE COOlANT lEvEl ENGINE OIl REplACEMENT Oil filling OIl fIlTER REplACEMENT ChECk fuEl hOSES ANd ClAMpS ChECk ANd ClEAN ThE AIR fIlTER hOuSING AlTERNATOR bElT Belt tensioning...
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S 07 MAINTENANCE Battery voltage Battery specific gravity...
CAUTION! During the warranty period, it is essential to have all work per- formed by an authorized Nanni workshop. In addition, all inter- Clean the engine before servicing. Watch for oil or fluid ventions must be recorded in the Nanni after-sales system.
S 07 MAINTENANCE CHECKING THE ENGINE OIL LEVEL CHECKING THE ENGINE COOLANT LEVEL • Remove the expansion tank cap (1) and check that DANGER! the coolant level is between the low and high marks. Stop the engine before checking the oil level. Engine oil level •...
S 07 MAINTENANCE ENGINE OIL REPLACEMENT DANGER! When changing or inspecting, be sure to level and stop the engine. ENVIRONMENT! Use a suitable container. Used oil must be disposed of in accordance with national and international laws and reg- ulations. IMPORTANT ! When using a different brand or viscosity of oil, remove •...
Then fill up the engine oil to the specified level.. IMPORTANT! To prevent serious damage to the engine, replacement el- ement must be highly efficient. Use only a NANNI genuine filter or its equivalent.
S 07 MAINTENANCE CHECK AND CLEAN THE AIR FILTER HOUS- ALTERNATOR BELT Belt tensioning • Remove the air filter housing from the engine DANGER! • Wash it with soap and water Stop the engine before working on the alternator belt •...
S 07 MAINTENANCE FUEL FILTER CARTRIDGE REPLACEMENT DANGER! Stop the engine before replacing the fuel filter cartridge. Isolate the fuel system before replacing the filter. IMPORTANT! Water and dust from the tank and circuit are collected in this cartridge. It should therefore be replaced at the first service visit and every 250 hours of operation or annually, whichever comes first.
S 07 MAINTENANCE FLEXIBLE ENGINE MOUNTS the fuel filter a few turns. Open the fuel drain valve (2). On new or outdated generators, make sure that the front and rear flexible supports are properly adjusted. Check that the four flexible brackets are correctly posi- tioned, then attach them to the frame.
S 07 MAINTENANCE EXHAUST ELBOW INSPECTIONS Stainless steel dry exhaust elbow (optional for the non-soundproof version): Aluminum wet exhaust elbow : Disassembly Disassembly • Unscrew and remove the 4 bolts (1). • Unscrew and remove the 4 bolts (1). • Remove the exhaust elbow (2) with its gasket (3).
S 07 MAINTENANCE TIGHTENING OF SCREWS, CLAMPS AND RAW WATER PUMP IMPELLER REPLACEMENT RAW WATER AND COOLANT HOSES CAUTION! IMPORTANT! Before replacing the seawater pump impeller, make sure that the seawater valves are all closed and that the motor Check that the hoses are properly attached at the first is stopped.
S 07 MAINTENANCE COOLANT REPLACEMENT • Install the new impeller with a rotary motion in the direction it will rotate. DANGER! Do not remove the pressure cap from the heat exchanger when the engine is hot. Then loosen the cap slightly to release excess pressure before removing it completely.
S 07 MAINTENANCE ANTIFREEZE There are two types of antifreeze: use the permanent type (PT) for this motor. Before adding antifreeze for the first time, clean the inside of the heat exchanger by pouring fresh, cool water and draining it several times. The procedure for mixing water and antifreeze differs de- pending on the brand of antifreeze and the ambient tem- perature.
S 07 MAINTENANCE HOSE AND CLAMP REPLACEMENT NOTE! The images shown may differ from your model. Coolant and raw water system DANGER! Do not remove the expansion bowl cap when the engine is hot. Then loosen the cap slightly to the stop to relieve any excess pressure before removing it completely.
S 07 MAINTENANCE THERMOSTAT REPLACEMENT Fuel system 1. Loosen the clamps (2) and remove the fuel hoses (1). DANGER! Stop the engine before replacing the thermostat. Do not remove the thermostat from the heat exchanger until the coolant temperature is too high. The thermostat should be replaced every 2 years or 500 hours, whichever comes first.
S 07 MAINTENANCE REPLACEMENT OF THE PRESSURIZED FILL- 4. Bleed the system and start the engine to check for leaks. ER CAP Thermostat valve opening temperature 1. Remove the pressurized cap from the expansion tank. 1. Push the thermostatic valve down and insert a string between the valve and the valve seat..
S 07 MAINTENANCE HEAT EXCHANGER MAINTENANCE 2. Remove any internal deposits on the raw water side with a round brush. DANGER! 3. Replace cooler core if damaged. Do not remove the heat exchanger cap (1) when the en- CAUTION! gine is hot. Then loosen the cap slightly to release excess pressure before removing it completely.
S 07 MAINTENANCE RAW WATER PUMP REPLACEMENT WARNING! Do not start the engine without coolant. Use a mixture DANGER! of 50% clean, fresh, non-calcareous water and 50% anti- freeze to top up the cooler. For the water-antifreeze mix- Never work on the seawater circuit without taking care to isolate the suction and discharge valves.
S 07 MAINTENANCE Overview of the raw water pump Raw water pump installation 1. Check the condition of the spacer contact surface be- fore mounting the seal and the pump. Gasket Raw water pump Spacer Fittings Screw Washers Gasket 2. Replace the gasket (2) and after greasing it on both sides, install the raw water pump (3) using 4 screws (1) with their washers.
S 07 MAINTENANCE BATTERIES Battery specific gravity • Check the specific gravity of the electrolyte in CAUTION! each cell with a hydrometer. To avoid accidental shorting, be sure to attach the pos- • When the temperature of the electrolyte differs itive cable to the positive terminal before attaching the from that to which the hydrometer has been cali- negative cable to the negative terminal.
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S 07 MAINTENANCE electrolyte level. Specific gravity varies slightly with temperature. To be exact, specific gravity decreases by 0.0007 with a 1°C in- crease (0.0004 with a 1°F increase) in temperature, and increases by 0.0007 with a 1°C decrease (0.0004 with a 1°F decrease).
AL TERNATOR AL TERNATOR ALTERNATOR (8CM50 - 10CT50 - 9CM60 & 11CT60) Marking data Alternator nameplate Machine description DSR digital controller General description and operating principle Safety requirement Alternator safety devices Safety labels Personal protective equipment Residual risks Conventional symbols and symbol descriptions Operating temperature Electrical connection Rotation and sequence of phases...
AL TERNATOR ALTERNATOR (8CM50 - 10CT50 - 9CM60 & 11CT60) MARKING DATA Alternator nameplate N° Identification N° Identification Serial number Class of nominal characteristics Model Connection type Update index Excitation voltage Number of phases Excitation current Type of service Power versus temperature (20) Date of manufacture mm/yyyy Ambient temperature Rated speed of rotation...
AL TERNATOR MACHINE DESCRIPTION GENERAL DESCRIPTION AND OPERATING PRINCIPLE The NPE series alternators are self-regulating, without rings or brushes, with 2 and 4 poles. They have rotating The drive motor is connected to the flange and the discs inductors with a damping cage and inclined notched (1) of the alternator.
AL TERNATOR SAFETY REQUIREMENT Before any cleaning, lubrication or maintenance work is carried out, the engine to which the alternator is coupled must not be running but must be disconnected from its power sources. To switch off an alternator, it is necessary to follow The alternator is not fitted with an emergency stop, but it will stop instantly according to the shutdown system provided by the installer.
In case of exceptional operations and upon written request for maintenance operations, please contact your authorized NANNI dealer. Before installing the generator, arrangements must be made to ground the machine. For this reason, you must ensure that the grounding...
AL TERNATOR regulations of the country where the generator will be WARNING! installed. After long periods of storage or in the presence of CAUTION! moisture/condensation, check the insulation condition. The test must be performed by a qualified technician. The final installer is responsible for the installation of all Before performing such a test, it is necessary to protections (disconnecting devices, protection against disconnect the voltage regulator.
AL TERNATOR ELECTRICAL CONNECTION Once the connection has been made, check the tightening torques of the terminals, which must comply with the instructions given in the chapter “General tightening The operation must be performed by an electrical torques”. service technician. Once the connection is complete, refit the terminal box cover.
All the instrumentation for starting, running and stopping Before approaching or touching the alternator, make sure the system is provided by NANNI. it is de-energized and at room temperature; at this point, it can be cleaned externally using compressed air.
AL TERNATOR MAINTENANCE ROUTINE MAINTENANCE The NPE series alternators are designed to provide a long Evaluation of the condition of the windings after long maintenance-free life. periods of storage or inactivity. Intervention type Operator CAUTION! Before performing this operation, read the safety requirements at the beginning of this section.
AL TERNATOR Assessment of current operation (absence of abnormal noise or vibration). Intervention type Operator PPE to wear Periodicity fig b Every 2500 hours of use Materials and equipment Outils d’atelier At regular intervals, we recommend checking that the alternator is running smoothly without any abnormal noise or vibration.
EXTRAORDINARY MAINTENANCE Mechanical check of the fastening bolts and, in particular, of the electrical connections. DANGER! Intervention type Operator This type of maintenance must be performed by a NANNI dealer. PPE to wear Periodicity CAUTION! Perform extraordinary maintenance accurately and as Every 2500 hours of use often as specified by the manufacturer.
• Replace the regulator • Check the uniformity of the rotation. Unstable voltage • Adjust the stability of the reg- ulator by acting on the “STAB. For any other defects, please contact a NANNI dealer.
5. Stop the engine and remove the boat from the water. It may be necessary to adapt these operations depending 6. Drain and clean raw water system components. on the weather conditions. Contact an authorized Nanni workshop for more information. 7. Protect the components from corrosion.
STORAGE 11. Check the condition of the belts. Adjust belt tension. CAUTION! 12. Drain the fuel tank. Packaged or not, the alternator must be stored in a cool, dry place, protected from vibrations and never exposed 13. Open the fuel system valves. Bleed the system to the elements.
STORAGE BATTERIES When storing the unit, adjust the electrolyte level of the battery and store it in a dry place at room temperature. Recharge the battery as often as possible to extend its life. WARNING! Do not leave the battery unattended for a long time: it will be deeply discharged (about 7 to 8 volts).
If the engine does not work properly, use the following ta- too low. • Attempt to break in the valves. ble to identify the cause. If the cause cannot be found, contact an authorised Nanni workshop. • Fill up with fuel. Lack of fuel. •...
Replace the oil filter every second due to a lack of • Injection pump stalling. oil change. oil. • Injection failure • Check bearing clearance. Combustion • Valve clearance incomplete. • Compression ratio, etc. Checks to be carried out by NANNI Dealer...