Northern Lights M773LW3G Operator's Manual
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Northern Lights M773LW3G Operator's Manual

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OPERATOR'S MANUAL
OPERATOR'S MANUAL
OM843NW3
For Models: M843NW3, M843NW3G
www.northern-lights.com

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  • Page 1 OPERATOR’S MANUAL OPERATOR’S MANUAL OM843NW3 For Models: M843NW3, M843NW3G www.northern-lights.com...
  • Page 2 4420 14th Avenue NW Seattle, WA 98107 Tel: (206) 789-3880 Fax: (206) 782-5455 Copyright ©2018 Northern Lights, Inc. All rights reserved. Northern Lights™, and the Northern Lights logo are trademarks of Northern Lights, Inc. Printed in U.S.A. PART NO.: OM843NW3 5/19...

  • Page 3: Table Of Contents

    This publication is the property of Northern Lights, Inc. It may not be reproduced in whole or in part without the written permission of Northern Lights, Inc. © Northern Lights, Inc. All rights reserved. Litho U.S.A. Publication number OM843NW3 5/19...

  • Page 4: Introduction

    84 mm G - GEM series base frame 3 - US EPA Tier III compliant Northern Lights marine diesel generator set with an 843 engine and a PX-312K2 generator end, US EPA Tier III. M843NW M773LW3G Northern Lights marine diesel generator set with an 843 engine, PX-312K2 generator end, Gem series, US EPA Tier III.

  • Page 5: Warranty

    Safety Rules DANGER: Northern Lights generator sets and /or any other diesel powered equipment provided by NLI is not provided with spark arresting or explosion proof components, and therefore is not to be installed in the presence of combustible gases having a flash point of 43.3 Degrees C (110 Degrees F) or lower, such as Gasoline, Propane, Natural Gas or other similar fuel sources.
  • Page 6 Updated 4-12-17 Safety Rules (Continued) Handle Fuel Safely - Avoid Flames Wear Protective Clothing WARNING WARNING Diesel is highly flammable and should be treated with care at all times. Do do not refuel while smoking or To prevent catching anything in moving machinery, when near sparks or open flame. always wear close fitting clothes and safety equipment appropriate ALWAYS STOP ENGINE BEFORE FUELING to the job.
  • Page 7 Updated 4-12-17 Safety Rules (Continued) Never check battery charge Stay Clear of Rotating Drivelines by contacting the posts with DANGER a metal object. Use a volt- meter or hydrometer. Entanglement in rotating Frozen batteries may explode drivelines can cause serious if charged.
  • Page 8 Follow the procedures and use appropriate equipment exactly as recommended. WARNING Contact your Northern Lights dealer or Northern Lights Relieve pressure prior to factory for MSDS’s used on Northern Lights products. disconnecting pressurized lines. Escaping fluid under...
  • Page 9 Inhaling asbestos fibers may Disposing of waste improperly can threaten the cause lung cancer. Avoid environment and lead to unsafe working conditions. breathing any dust that may Potentially harmful waste used in Northern Lights equipment can include oil, fuel, coolant, filters and be generated when handling components containing asbestos batteries.

  • Page 10: Lock Out / Tag Out Procedures

    Scope During maintenance, repairs or retooling of a Northern Lights generator set, simply turning the machine off or unplugging it while it is being worked on does not give enough protection to others who are not performing the maintenance or repair.

  • Page 11: Component Locations M843Nw3 Marine Generator

    Marine Generator Component Locations Figure 1A and 2A: M843NW3 Belt Guard AC Circuit Breaker for AVR Injection Pump DC Circuit Breaker Oil Filter Oil Fill (2 Places) Coolant Recovery Tank Oil Drain Expansion Tank Seawater Pump Fuel Filter Generator Set Plate Wet Exhaust Elbow Fresh water Block Drain Air Filter (inside manifold)
  • Page 12 Marine Generator Component Locations Figure 1B and 2B: M843NW3 with 2011 Base frame Belt Guard AC Circuit Breaker for AVR Injection Pump DC Circuit Breaker Oil Filter Wet Exhaust Elbow Oil Fill (2 Places) Coolant Recovery Tank Generator Set Plate Junction Box Seawater Pump Fuel Filter...
  • Page 13 Updated 7-6-18 Marine Generator Component Locations Image not available at time of publication. Please consult factory for more information. Figure 1C and 2C: M843NW3G Gem Series (s/n: 8432-54693 and above) Belt Guard AC Circuit Breaker for AVR Injection Pump DC Circuit Breaker Oil Filter Expansion Tank Oil Fill (2 Places)

  • Page 14: Control Panels

    Control Panels 1. SHUTDOWN BYPASS-PREHEAT SWITCH Two functions are built into this switch: the preheating of the engine, and bypassing of the engine safety shut- down circuit. Hold switch in the ON position 10 - 20 seconds before starting the engine, and continue holding on during engine cranking.

  • Page 15: Operating Procedures

    Updated 5-7-19 Operating Procedures STARTING BREAK-IN PERIOD 1. The first 100 hours on a new or reconditioned 1. Hold the Shutdown Bypass-Preheat switch in the ON position for 10 to 20 seconds before starting a cold engine are critical to its life and performance. engine. Holding the switch too long can burn out the 2.

  • Page 16: Shutdowns And Alarms

    Operating Procedures SHUTDOWNS AND ALARMS SPARE PARTS 1. Your unit is fitted with a system to protect it from high 1. Northern Lights recommends that you keep the following spare parts on hand for field service. The water temperature or low oil pressure. a. Generator sets have shutdown systems to stop the parts are available from your local Northern Lights engine.

  • Page 17: Servicing Schedule Chart

    Updated 2-25-13 Servicing Schedule Chart The Servicing Schedule Chart below shows the service schedule required for proper maintenance of your generator set. More detailed coverage of each Service Point (SP) is listed on the page noted in the ‘page’ column. DAILY: EVERY 250 HOURS: Check oil level in engine...

  • Page 18: Servicing

    Updated 11-20-18 Servicing SP-1. CHECKING OIL LEVEL LUBRICATION - GENERAL 1. Check the oil level in the crankcase with the dipstick 1. Use only clean, high quality lubricants stored in . The oil level must be in the waffled area (Fig. 5) clean containers in a protected area. on the stick. Never allow the level to go below this 2.

  • Page 19: Air Cleaner

    Servicing SP-4. AIR CLEANER 1. Inspect air cleaner every 250 hours. In dusty conditions, check more often. 2. Marine sets: if dirty, wash element in soapy water. Rinse and dry thoroughly before re-installing. Replace if necessary. Part number for the element is: M843N –...

  • Page 20: Fuels - General

    Servicing FUELS - GENERAL FUEL FILTERS 1. Use only clean, high quality fuels of the following specifications, as defined by ASTM designation Primary Fuel Filter D975 for diesel fuels: a. Use grade no. 2 diesel at ambient temperatures above freezing 32°F (0°C). b. Use grade no. 1 at ambient temperatures below Part Numbers freezing and for all temperatures at an altitude of above 5,500 ft.

  • Page 21: Bleeding The Fuel System

    Servicing SP10. BLEEDING THE FUEL SYSTEM CAUTION: Escaping diesel fuel under pressure can penetrate skin causing serious personal injury. Before disconnecting lines be sure to relieve all pressure. Before applying pressure, be sure all connections are tight and lines, pipes and hoses are not damaged. Fuel escaping from a very small hole can be almost invisible.

  • Page 22: Injector Service

    Check should be made by DO NOT use hand to check for leaks. a Northern Lights dealer or local injection repair station. Have your dealer check the fuel injection SP-12. INJECTION PUMP nozzle spray pattern with injection nozzle tester.

  • Page 23: Injection Pump

    Updated 11-8-13 Servicing For illustrative purposes only, may not be your exact model. Figure 10: Remove delivery line flare nuts. Figure 14: Remove return line. Figure 11: Remove delivery lines. Figure 15: Unscrew injector. Figure 12: Cover lines, inlets and injection pump outlets. Figure 16: Remove and replace copper sealing washer.

  • Page 24: Cooling System - General

    Updated 11-8-13 Servicing COOLING SYSTEM - GENERAL SP-13. CHECK THE COOLANT LEVEL NOTE: Be sure to close the sea-cock 1. Check the coolant level each day before starting the before working on the engine cooling system. engine. Check the water level by removing the pressure cap from the expansion tank.

  • Page 25: Raw Water Pump

    The maintenance and operation recommendations for the generator end are in a separate Owner’s Manual. If you do not have one of these manuals, contact your local Northern Lights dealer. ELECTRICAL SYSTEM - GENERAL 1. Never switch battery switch off or break the circuit between the alternator and batteries while the engine is running.

  • Page 26: Booster Batteries

    Updated 10-18-18 Servicing SP-20. WINTERIZING / OUT-OF-SERVICE If the generator set will not be used for more than 3 months the following preparations should be taken for long term storage. • Change engine oil and filter, using API CJ or CK-4, 15W-40 oil. • Run the engine up to at least 140 F from a small, clean source of fuel dosed with either “Stab-il”...

  • Page 27: Troubleshooting

    • If breaker is tripped, reset it. Does Not Function Faulty connection • Clean and tighten battery and harness plug connections. Sulfated or worn out batteries • Check specific gravity and electrolyte level of each battery. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM843NW3 5/19...

  • Page 28: Engine

    Troubleshooting ENGINE PROBLEM POSSIBLE CAUSE RECOMMENDATION(S) Engine Hard to Start Improper starting procedure • See starting section of this manual. Take or Will Not Start special note of Bypass Switch operation. No fuel • Check level of fuel in fuel tank. Low battery output •...
  • Page 29 Injection pump out of time • See your dealer. Engine not at proper temperature • Check your thermostats. • Check water temperature with thermometer and replace gauge if necessary. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM843NW3 5/19...
  • Page 30 • Use correct fuel for temperature. White Smoke Cold engine • Warm up engine to normal operating temperature. Defective thermostat • Remove and check thermostat. Engine timing off • See your dealer. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM843NW3 5/19...

  • Page 31: Wiring Diagrams Ac Electrical

    Updated 3-13-12 AC Wiring Diagrams OM843NW3 5/19...
  • Page 32 Updated 3-13-12 AC Wiring Diagrams OM843NW3 5/19...

  • Page 33: Dc Electrical

    Updated 3-13-12 DC Wiring Diagrams OM843NW3 5/19...
  • Page 34 Updated 3-13-12 DC Wiring Diagrams OM843NW3 5/19...
  • Page 35 DC Wiring Diagrams OM843NW3 5/19...
  • Page 36 Updated 9-12-13 DC Wiring Diagrams OM843NW3 5/19...

  • Page 37: Control Panels

    Updated 6-5-17 Panel Wiring Diagrams OM843NW3 5/19...
  • Page 38 Updated 6-5-17 Panel Wiring Diagrams OM843NW3 5/19...
  • Page 39 Updated 6-5-17 Panel Wiring Diagrams OM843NW3 5/19...
  • Page 40 Updated 6-5-17 Panel Wiring Diagrams OM843NW3 5/19...
  • Page 41 Updated 3-13-12 Panel Wiring Diagrams OM843NW3 5/19...
  • Page 42 Updated 3-13-12 Panel Wiring Diagrams OM843NW3 5/19...
  • Page 43 Updated 3-13-12 Panel Wiring Diagrams OM843NW3 5/19...
  • Page 44 Updated 3-13-12 Panel Wiring Diagrams OM843NW3 5/19...
  • Page 46 4420 14th Ave. NW., Seattle WA 98107 Tel: (206) 789-3880 • 1-800-762-0165 • www.northern-lights.com Northern Lights and Lugger are registered trademarks of Northern Lights, Inc. © 2019 All rights reserved. Litho USA.

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