Nanni Q2400 Series User Manual
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Nanni Q2400 Series User Manual

Nanni Q2400 Series User Manual

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NANNI GENERATOR SET
USER MANUAL
DGBXXT090041
Q2400 Series

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Summary of Contents for Nanni Q2400 Series

  • Page 1 NANNI GENERATOR SET USER MANUAL DGBXXT090041 Q2400 Series...

  • Page 3: Q00 Tracked Changes

    TRACKED CHANGES TRACKED CHANGES CODE INDEX DATE INITIALS NATURE OF TRANSLATIONS PAGES DGBXXT09041 02/2023 Creation Please note all changes and pages associated. For further clarity, please add a line in front of each change...
  • Page 4 TRACKED CHANGES...

  • Page 5: Table Of Contents

    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...
  • Page 6 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...
  • Page 7 SUMMARY Electrical connection Terminal board configurations Maintenance GENERALITIES Ordinary Maintenance Extraordinary maintenance General tightening torques ALTERNATOR (18CM50 & 20CM60) Marking data Safety requirements Starting and stopping operations Cleaning and lubrication Maintenance Routine maintenance Extraordinary maintenance Tightening torque table TROUBLE SHOOTING STORAGE STORAGE PROCEDURE Long-term storage...
  • Page 8 SUMMARY...

  • Page 9: S01 Introduction

    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.

  • Page 10: About This Manual

    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.

  • Page 11: S02 Safety

    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...

  • Page 12: Safety Signals

    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.

  • Page 13: Engine - Genset Safety Icons

    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...

  • Page 14: Safe Maintenance Practice

    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.

  • Page 15: Noise Protection

    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.

  • Page 16: Safe Cooling System Service

    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.

  • Page 17: Handle Starting Fluid Safely (Ether)

    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 •...

  • Page 18: Live With Safety

    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.

  • Page 19: S03 Fluids

    FLUIDS FUELS STORING FUEL DIESEL FUEL Required Fuel Properties E-Diesel fuel LUBRICITY OF DIESEL FUEL HANDLING AND STORING DIESEL FUEL RECOMMENDED FUEL Approved fuel European standard EN15940 EN15940 (Effect on engine) BIODIESEL FUEL TESTING DIESEL FUEL MINIMIZING THE EFFECT OF COLD WEATHER ON DIESEL ENGINES Use Winter Grade Fuel Air Intake Heater Ether...

  • Page 20: Fuels

    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.

  • Page 21: Lubricity Of 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.

  • Page 22: Handling And Storing Diesel Fuel

    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.

  • Page 23: Biodiesel Fuel

    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.

  • Page 24: Minimizing The Effect Of Cold Weather On Diesel Engines

    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.

  • Page 25: Diesel Engine Coolants

    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.

  • Page 26: Water Quality For Mixing With Coolant Concentrate

    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.

  • Page 27: Lubricants

    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.

  • Page 28: Diesel Engine Oil - Tier 3 And Stage Iiia

    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.

  • Page 29: Fuel Filters

    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-...

  • Page 30: Lubricant Storage

    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.

  • Page 31: Disposing Of Waste Fluids

    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.
  • Page 32 FLUIDS...

  • Page 33: S04 Warranty

    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.

  • Page 34: Engine Homologation

    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.

  • Page 35: Proposition 65 State Of California

    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-...

  • Page 36: Epa Warranty

    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-...

  • Page 37: S05 Components

    COMPONENTS COMPONENTS GENERATOR SET 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...

  • Page 38: S05 Components

    COMPONENTS...

  • Page 39: Generator Set Main Components

    COMPONENTS GENERATOR SET 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 plug...

  • Page 40: View N°1 Of The Generator Set

    COMPONENTS VIEW N°1 OF THE GENERATOR SET...

  • Page 41: View N°2 Of The Generator Set

    COMPONENTS VIEW N°2 OF THE GENERATOR SET...

  • Page 42: View N°3 Of The Generator Set

    COMPONENTS 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. •...

  • Page 43: S06 Starting & Running

    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...

  • Page 44: Command Panel

    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.

  • Page 45: Display Screens & Pages Structures

    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.

  • Page 46: Before Starting

    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.

  • Page 47: Electric System

    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.

  • Page 48: 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.

  • Page 49: Running

    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.

  • Page 50: Cold Climate Precautions

    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.

  • Page 51: S 07 Maintenance

    S 07 MAINTENANCE S 07 MAINTENANCE GENSET MAINTENANCE About this manual Generalities Maintenance intervals Engine oil level check Oil Level Engine. Engine coolant level check Engine oil replacement Oil filling Oil filter replacement Check fuel hoses and clamp bands Air filter box control & clean Alternator belt Belt tension Belt damage and wear...

  • Page 52: S 07 Maintenance

    S 07 MAINTENANCE Sea water pump replacement Sea Water Pump Removal Sea Water Pump overview Sea Water Pump Installation Batteries Battery Voltage Battery Specific Gravity ELECTRIC DIAGRAM (50Hz - SINGLE PHASE) ELECTRIC DIAGRAM (60Hz - SINGLE PHASE)
  • Page 53 S 07 MAINTENANCE...

  • Page 54: Genset Maintenance

    During the warranty period, it is essential to have all work performed by an authorized Nanni workshop. In addition, Clean the engine before servicing. Watch for any oil or all service should be recorded in the Nanni after-sales fluid spillage, which is a sign of leakage. system.

  • Page 55: Maintenance Intervals

    S 07 MAINTENANCE MAINTENANCE INTERVALS PERIODICITY Every Every COMPONENTS Every Every Daily 25 hours 1000 2000 250 hours 500 hours hours hours Fuel system Water in fuel - Prefilter / Draining - Cartridge Fuel filter Injectors Lube system Oil level Oil engine Oil filter Cooling system...

  • Page 56: Engine Oil Level Check

    S 07 MAINTENANCE ENGINE OIL LEVEL CHECK ENGINE COOLANT LEVEL CHECK Remove the expansion bowl cap (1) and check to see that WARNING! the coolant level between the low and maxi level marks. Stop the engine before oil level checking. Oil Level Engine.

  • Page 57: Engine Oil Replacement

    S 07 MAINTENANCE ENGINE OIL REPLACEMENT WARNING! When changing or inspecting, be sure to level and stop the engine. ENVIRONMENT! Use a suitable container. Used oil must be disposed of as specified in national and international laws and regula- tions. IMPORTANT ! •...

  • Page 58: Oil Filter Replacement

    Then, replenish the engine oil up to the specified level. Option 2 IMPORTANT! To prevent serious damage to the engine, replacement el- ement must be highly efficient. Use only a NANNI genuine filter or its equivalent.

  • Page 59: Air Filter Box Control & Clean

    S 07 MAINTENANCE AIR FILTER BOX CONTROL & CLEAN ALTERNATOR BELT Remove the air filter box from the engine Belt tension Wash it with soap and water WARNING! Dry it with compressed air and reinstall on the engine; The pressure of compressed air must be less than 210 kPa Stop the engine before work on alternator belt (2.1 kgf/cm2, 30 psi).

  • Page 60: Belt Replacement

    S 07 MAINTENANCE FUEL FILTER CARTRIDGE REPLACEMENT WARNING! Stop the engine before replacing the fuel filter cartridge. Isolate the fuel circuit before replacing the filter. IMPORTANT! Water and dust contained in the tank and circuit are col- lected in this cartridge. Therefore it must be replaced during the first maintenance visit and every 250 hours of operation or year whichever come first.

  • Page 61: Engine Flexible Mounts

    S 07 MAINTENANCE ENGINE FLEXIBLE MOUNTS fuel filter by a few turns. Open fuel bleeding cock (2). On new gensets or on gensets that are out of adjustment, make sure that the front and rear flexible mountings are set properly. Check that the four flexible mountings are correctly posi- tioned, then fix the mountings to the engine bed.

  • Page 62: Exhaust Elbows Inspections

    S 07 MAINTENANCE Exhaust elbows inspections Stainless steel dry exhaust elbow: Removal Aluminum wet exhaust elbow: Unscrew and remove the 4 nuts (1). Removal Unscrew and remove the 4 bolts (1) . Remove the exhaust elbow (2) with its gasket (3). Remove the exhaust elbow (2) with its gasket (3).

  • Page 63: Raw Water And Coolant Screws, Clamps, And Hoses Tightening

    S 07 MAINTENANCE RAW WATER AND COOLANT SCREWS, RAW WATER IMPELLER PUMP REPLACEMENT CLAMPS, AND HOSES TIGHTENING CAUTION! IMPORTANT! Before replacing the seawater pump impeller, make sure that the sea water valves are all closed and the engine is Check that the hoses are correctly attached during the stopped.

  • Page 64: Coolant Fluid Replacement

    S 07 MAINTENANCE COOLANT FLUID REPLACEMENT WARNING! Do not remove the heat-exchanger pressurized cap when the engine is hot. Then loosen the cap slightly to release the excess pressure before removing it completely. ENVIRONMENT! Lubricate the gasket with glycerine. Install the O-ring/ gasket and cover..

  • Page 65: Coolant Filling

    S 07 MAINTENANCE ANTI-FREEZE 5. When all the liquid has been drained, refit the drain plugs and hoses. Fill the circuit with clean water with- There are two types of anti-freeze available: use the per- out calcareous and a cleaning agent for the cooling manent type (PT) for this engine.

  • Page 66: Hoses & Clamps Replacement

    S 07 MAINTENANCE HOSES & CLAMPS REPLACEMENT NOTE! The pictures shown may differ from your model. Coolant & Sea water circuit WARNING! Do not remove the heat-exchanger cap when the engine is hot. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely.

  • Page 67: Fuel Circuit

    2. Reinstall the cover (3) with a new gasket (4), then refit and tighten the two screws (3). 3. Fill the coolant with liquid as recommended by NANNI (see related chapter). 4. Bleed the circuit and start the engine to check for...

  • Page 68: Thermostat Valve Opening Temperature

    S 07 MAINTENANCE PRESSURIZED FILLING CAP REPLACEMENT Thermostat Valve Opening Temperature 1. Push down the thermostat valve and insert a string 1. Remove the cap from the heat exchanger tapped plug. between the valve and the valve seat. 2. Place the thermostat and a thermostat in a container with water and gradually heat the water.

  • Page 69: Heat Exchanger Maintenance

    S 07 MAINTENANCE HEAT EXCHANGER MAINTENANCE WARNING! WARNING! Do not start the engine without coolant or the isolated seawater circuit. Do not remove the heat exchanger cap (1) when the en- gine is hot. Then loosen the cap slightly to release the Heat Exchanger Dismantling excess pressure before removing it completely.

  • Page 70: Heat Exchanger Reassembly

    S 07 MAINTENANCE CAUTION! Do not use caustic soda as this could damage the core. Heat exchanger reassembly 1. Place new O-rings (1) at both ends of the tube stack. Insert it in the exchanger body. 2. Put the 2 covers in place (2 and 3) using the 8 screws (1).

  • Page 71: Raw Water Pump Impeller Replacement

    S 07 MAINTENANCE RAW WATER PUMP IMPELLER REPLACE- MENT WARNING! Before replacing the seawater pump rotor, make sure that the seawater valves are all closed and that the engine cannot be started. 1. Remove the 6 screws (1) from the cover, and then the cover (2) from the pump.

  • Page 72: Sea Water Pump Replacement

    S 07 MAINTENANCE SEA WATER PUMP REPLACEMENT Sea Water Pump overview WARNING! Never work on the seawater circuit without taking care to isolate the suction and discharge valves. Sea Water Pump Removal 1. Unscrew clamps (1) and remove the hose (2). Bolts Pump flange Sea water pump...

  • Page 73: Sea Water Pump Installation

    S 07 MAINTENANCE Sea Water Pump Installation 3. Install the pump and spacer assembly (4) with a new gasket (5) using bolts (3) and their corrugated wash- ers. 1. Install the splined hub (1) after inspection of the driv- ing pin. If the pin is damage replace the splined hub. 4.

  • Page 74: Batteries

    S 07 MAINTENANCE BATTERIES Battery Specific Gravity Check the specific gravity of the electrolyte in each cell CAUTION! with a hydrometer. To avoid accidental short circuit, be sure to attach the When the electrolyte temperature differs from that at positive cable to the positive terminal before the negative which the hydrometer was calibrated, correct the specific cable is attached to the negative terminal.
  • Page 75 S 07 MAINTENANCE The hydrometer reading must be taken at the highest electrolyte level. Specific gravity slightly varies with temperature. To be exact, the specific gravity decreases by 0.0007 with an increase of 1 °C (0.0004 with an increase of 1 °F) in tem- perature, and increases by 0.0007 with a decreases of 1 °C (0.0004 with a decrease of 1 °F.

  • Page 76: Electric Diagram (50Hz - Single Phase)

    S 07 MAINTENANCE ELECTRIC DIAGRAM (50Hz - SINGLE PHASE)

  • Page 77: Electric Diagram (60Hz - Single Phase)

    S 07 MAINTENANCE ELECTRIC DIAGRAM (60Hz - SINGLE PHASE)
  • Page 78 S 07 MAINTENANCE...

  • Page 79: S08 Al Ternator

    AL TERNATOR AL TERNATOR ALTERNATOR (20CM50 - 24CT50 - 23CM60 & 27CT60) Marking data Alternator Nameplate Alternator Overview Main components DSR Digital Regulator General description and working principle Technical Data IP Protection Rating Radial Loads Noise level [dB(A)] Weight Materials Operating temperature ALTERNATOR SAFETY Alternator Safety devices...

  • Page 80: S08 Al Ternator

    AL TERNATOR...

  • Page 81: Alternator (20Cm50 - 24Ct50 - 23Cm60 & 27Ct60)

    AL TERNATOR ALTERNATOR (20CM50 - 24CT50 - 23CM60 & 27CT60) MARKING DATA Alternator Nameplate N° Identification The ECP series alternators are self-regulating brushless Nominal characteristics class alternators with 2 or 4 poles. Connection type They are equipped with a rotating field (1) with a damping Excitation Voltage cage and a fixed armature with inclined grooves.

  • Page 82: Alternator Overview

    AL TERNATOR ALTERNATOR OVERVIEW ECP Series alternators are self-regulated, 2 or 4-pole brushless alternators. They are equipped with a rotating inductor (1) fitted with a damper cage and stationary armature with inclined grooves. The winding is short pitched so as to reduce the harmonics.

  • Page 83: General Description And Working Principle

    AL TERNATOR GENERAL DESCRIPTION AND WORKING TECHNICAL DATA PRINCIPLE IP Protection Rating The drive motor is connected to the flange and disks (1) The alternator is built with an IP23 protection rating. of the alternator. Radial Loads Maximum allowable radial loads applied to shaft projection, for double-bearing alternators.

  • Page 84: Alternator Safety

    AL TERNATOR ALTERNATOR SAFETY IMPORTANT! See “Safety” chapter for more information about genset safety. Alternator Safety devices The safety devices of the alternator are: Install the alternator in a well-aired room. Insufficient ventilation may cause overheating and malfunctioning of the alternator. For required air volumes, see installation manual DGBXXT13006A 1.

  • Page 85: Personal Protective Equipment

    AL TERNATOR disclaims all responsibility for any potential damages caused to people by failure to use the PPE. Position Label Description Residual risks Read manual before removing covers. The alternator presents the following residual risks: DANGER! Danger ! Burning risk. The working alternator may release heat even to a high level.

  • Page 86: Electrical Connection

    The electrical service man must be able to work even in case electrical cabinets and panels are live. In case of exceptional operations and upon written request of servicing operations please apply to NANNI authorized dealer. Before installing the generator, arrangements must be made to earth the machine.

  • Page 87: Terminal Board Configurations

    AL TERNATOR TERMINAL BOARD CONFIGURATIONS Once the connection was made check the terminal tightening torques that must comply with the instructions given in chapter “General Tightening Torques” When the connection is finished reassemble the cover of the terminal box. NOTE! The user power cables must be wired and supported adequately so as not to cause mechanical stress on the terminal block of the alternator...

  • Page 88: Maintenance Generalities

    AL TERNATOR MAINTENANCE GENERALITIES Maintenance summary table General Instructions Type Description Periodicity Alternator exterior and Every 15 days CAUTION! interior cleaning General cleaning Every 400 hours Before executing any maintenance operation, read Air filter cleaning (if pres- Every 400 hours carefully the instructions in chapter 3 “Safety”...

  • Page 89: Ordinary Maintenance

    AL TERNATOR ORDINARY MAINTENANCE Visual Inspection Air filter cleaning (if present) Type of intervention Operator Type of intervention Operator PPE to wear Periodicity PPE to wear Periodicity Every 2500 hours of use Every 400 hours of use Materials and equipments Workshop tools.

  • Page 90: Verification Of Correct Alternator Operation

    The balancing of the rotor. NOTE! • The state of the alternator bearings. If necessary replace them (Call NANNI Dealer). It is strictly forbidden to use any kind of high-pressure • The alignment of the couplings. water jet cleaners and detergent liquids. The standard •...

  • Page 91: Extraordinary Maintenance

    NOTE! DANGER! The intervention periodicity indicated refers to critical environmental conditions. Adapt the periodicity based on This type of maintenance must be done by a NANNI dealer. the actual conditions of use. CAUTION! Carry out extraordinary maintenance with accuracy and as often as specified by the manufacturer.

  • Page 92: General Tightening Torques

    AL TERNATOR GENERAL TIGHTENING TORQUES [Nm] ± 7% Application Screw type Tightening Torque Cover tie rod M8 X 438 Fastening of 35 mm exciter stator M6 X 95 CL. 8.8 IP2X protection of front cover M5 X 10 CL. 4.8 Rear Grid M6 X 16 CL.

  • Page 93: Alternator (18Cm50 & 20Cm60)

    AL TERNATOR ALTERNATOR (18CM50 & 20CM60) MARKING DATA Alternator Nameplate NPE 2 and 4 pole alternators are brushless, self-regulating and incorporate a rotating inductor with damper cage winding and a fixed stator with skewed slots. The stator windings have a shortened pitch to reduce the harmonic content of the output waveform. They are equipped with a rotating field (1) with a damping cage and a fixed armature with inclined grooves.

  • Page 94: Safety Requirements

    AL TERNATOR SAFETY REQUIREMENTS STARTING AND STOPPING OPERATIONS Before any cleaning, lubrication or maintenance operation, All the instrumentation for starting, running and stopping ensure that the generator is stationary and disconnected the system shall be provided by the installer. from the power supply. CAUTION! When stopping the generator, ensure the compliance with the procedures for stopping the prime mover.

  • Page 95: Cleaning And Lubrication

    AL TERNATOR CLEANING AND LUBRICATION MAINTENANCE Prior to approaching or touching the alternator, ensure The alternators series NPE are designed to give a long that it is not live and it is at room temperature; at this stage maintenance free working life. it is possible to clean it on the outside using compressed air.

  • Page 96: Routine Maintenance

    AL TERNATOR ROUTINE MAINTENANCE Assessment of windings conditions after long periods of storage or inactivity. Type of intervention Operator PPE to wear Periodicity fig a Every 2500 hours of use Materials and equipments “Megger” Tester or similar to 500V in continuous voltage. DANGER! fig a Disconnect the alternator from the power supplies.

  • Page 97: Assessment Of Current Functioning (Absence Of Anomalous Noises Or Vibrations)

    AL TERNATOR Assessment of current functioning (absence of Mechanical checks of fastening bolts and, in anomalous noises or vibrations). particular, of electric connections. Type of intervention Operator Type of intervention Operator PPE to wear Periodicity PPE to wear Periodicity Every 2500 hours of use Every 2500 hours of use Materials and equipments Materials and equipments...

  • Page 98: Extraordinary Maintenance

    TIGHTENING TORQUE TABLE EXTRAORDINARY MAINTENANCE DANGER! Specifications Terminal board nut - 6 Nm ± 7% This type of maintenance must be done by a NANNI dealer. Torque M8 screws - Torque 21 Nm CAUTION! M10 screws - Torque 35 Nm Carry out extraordinary maintenance with accuracy and as often as specified by the manufacturer.

  • Page 99: Trouble Shooting

    At load conditions, • Reset voltage potentiometer. voltage higher • Substitute regulator than rated value • Check uniformity of rotation. • Regulate stability of regulator Unstable voltage by acting on “STAB.” potenti- ometer For any other defect, please contact a NANNI dealer.
  • Page 100 AL TERNATOR...

  • Page 101: S10 Storage

    STORAGE S10 STORAGE STORAGE PROCEDURE Long-term storage Long-term storage procedure Batteries...

  • Page 102: Storage Procedure

    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.
  • Page 103 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.

  • Page 104: Batteries

    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).

  • Page 105: S11 Trouble Shooting

    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. •...

  • Page 106: Sudden Engine Stop

    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...

  • Page 107: Emergency Engine Stop

    TROUBLE SHOOTING EMERGENCY ENGINE STOP ENGINE OVERHEATING Defect Solutions Defect Solutions Engine speed • Check timing and injection. Oil level too low. • Check the oil circuit, add oil. variations. Unusual noise. • Check all rotating parts. Extended • Replace the belt or adjust the or broken tension.
  • Page 108 TROUBLE SHOOTING...

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