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Northern Lights M673L3G Operator's Manual

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OPERATOR'S MANUAL
OPERATOR'S MANUAL
OM673L3
For Models: M673LD3, M673LD3G, M673L3
and M673L3G
www.northern-lights.com

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  • Page 1 OPERATOR’S MANUAL OPERATOR’S MANUAL OM673L3 For Models: M673LD3, M673LD3G, M673L3 and M673L3G www.northern-lights.com...
  • Page 2 4420 14th Avenue NW Seattle, WA 98107 Tel: (206) 789-3880 Fax: (206) 782-5455 Copyright ©2021 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.: OM673L3 03/21...

  • Page 3: Table Of Contents

    OPERATOR'S MANUAL for Models M673LD3, M673LD3G, M673L3 and M673L3G Read this operator's manual thoroughly before starting to operate your equipment. This manual contains information you will need to run and service your new unit. Table of Contents INTRODUCTION ..........2 SERVICING (continued) Unit Identification ..........2...

  • Page 4: Introduction

    M673LD3 Northern Lights marine diesel generator set with a 673 engine long stroke, TF-276D generator end US EPA Tier III, 5 kW. Northern Lights marine diesel generator set with a 673 engine long stroke, TF-276D generator end, GEM series base M673LD3G frame, US EPA Tier III, 5 kW.

  • Page 5: Warranty

    Safety Rules DANGER: Northern Lights generator sets and /or any other diesel powered equipment provided by NLI is not provided with ingintion protected 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. MACHINE. Always fill Prolonged exposure portable fuel tank outdoors. to loud noise can Never fuel a hot engine. cause hearing loss or Prevent accidental impairment. Wear discharge of starting fluids suitable authorized by storing all cans in a hearing protection, cool, safe place, away such as earmuffs or plugs to protect against loud from sparks or open flame. Store with cap securely noises. on container. Never incinerate or puncture a fuel container.
  • 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. Never charge injury or death. Keep a battery that has not been shields in place at all times. Make sure that rotating allowed to warm to at least shields turn freely in pace with the drivelines. 16 o C (60 o F). Always remove grounded (-) battery clamp first and Do not wear loose fitting equipment around rotating replace ground clamp last. drivelines. Stop the engine and make sure that all moving parts have stopped before making any Sulfuric acid in battery electrolyte is poisonous and adjustments, connections, or performing any other type strong enough to burn skin, eat holes into clothing and of service to the engine or other driven equipment. other materials, and cause blindness if splashed into eyes. Install all Safety Guards To Avoid Hazards: WARNING...
  • Page 8 Updated 4-12-17 Safety Rules (Continued) Handle Chemical Products Safely Do not use a chlorinated solvent in an area where welding will occur. Work only in areas that are well WARNING ventilated. Dispose of paint and solvent properly. Service Cooling System Safely Direct exposure to hazardous chemicals can cause serious WARNING injury. Among the potentially hazardous chemicals that may be Opening a pressurized cooling used with Northern Lights system can release explosive fluids products are lubricants, coolants, and causing serious burns. paints and adhesives. Before opening any pressurized cooling system, make sure the All potentially hazardous chemicals come with a Material engine has been shut off. Do Data Safety Sheet (MSDS). The MSDS provides specific not remove a filler cap unless it is cool enough to details on chemical products, including physical hazards, comfortably grip with bare hands. Slowly loosen cap to safety procedures and emergency response techniques relieve pressure before opening fully. Read and understand the MSDS for each chemical before Avoid High Pressure Fluids you start any job that includes it. Follow the procedures and use appropriate equipment exactly as recommended.
  • Page 9 Updated 4-12-17 Safety Rules (Continued) Do Not Open High-Pressure Fuel System Avoid creating dust. Never use compressed air for cleaning. Avoid brushing or grinding materials DANGER containing asbestos. When servicing, wear an approved respirator. A special vacuum cleaner is Many Northern Lights engines use high- recommended to clean asbestos. If this vacuum is not pressure fuel injection. High-pressure fluid available, apply a mist of oil or water on the material remaining in fuel lines can cause serious containing asbestos. Keep all bystanders away from injury. Do not disconnect or attempt any area where asbestos dust may be generated. any repair of fuel lines, sensors, or other components between the high-pressure fuel pump Use Proper Lifting Equipment and Techniques and nozzles on engines with high pressure fuel WARNING systems. ONLY AUTHORIZED TECHNICIANS CAN Lifting heavy components incorrectly PERFORM REPAIRS ON AN HIGH PRESSURE can cause severe injury or damage FUEL INJECTION SYSTEMS. to machinery. Avoid unbalanced loads. Do not use lifting eyes. Lift Avoid Hot Exhaust...

  • Page 10: Lock Out / Tag Out Procedure

    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 Notes OM673L3 5/21...

  • Page 12: Component Locations M673Ld3G / M673L3G

    Updated 3-16-21 Marine Generator Component Locations Figure 1 (left): Service side M673L3G/LD3G w/GEM Series base frame (S/N: 6732-54637 and above) Figure 2 (right): Non-service side M673L3G/LD3G w/GEM Series frame (S/N: 6732-54367 and above) 1. Generator junction box 9. Fuel injector 17.

  • Page 13: M673Ld3 / M673L3

    Updated 8-6-19 Marine Generator Component Locations Figure 3 (left): Service side M673L/LD3 (up to S/N: 6732-54636) Figure 4 (right): Service side M673L/LD3 (up to S/N: 6732-54636) 1. Heat Exchanger End Cap 8. Generator End Cover 16. DC Circuit Breaker 23. Lube Oil Drain 2.

  • Page 14: Control Panels

    Updated 8-6-19 Control Panels 1. SHUTDOWN BYPASS-PREHEAT SWITCH This switch serves two functions: 1. Preheats glowplugs before beginning the starting process. Press switch for 10 seconds before attempting start-up. 2. Bypasses the safety shutdown feature during the starting process. Keep switch engaged while starting engine, and for 2 to 3 seconds afterwards, allowing oil pressure to build beyond shutdown setpoint. 2. ENGINE CONTROL SWITCH To start the engine, hold this switch in the START position until the engine is running. Figure 4: Series 1-B Generator Control Panel NOTE: Excessive cranking of marine sets equipped with water lift muffler systems can cause engine damage. See page 7.

  • Page 15: Operating Procedures

    Updated 8-6-19 Operating Procedures BREAK-IN PERIOD STARTING 1. The first 100 hours on a new or reconditioned engine 1. Hold the Shutdown Bypass-Preheat switch in the ON are critical to its life and performance. position for 10 seconds before starting a cold engine. 2. Operate the engine under various conditions, Holding the switch too long can burn out the glow particularly heavy loads to help seat engine plugs. components properly. 50% load is required; 75% is 2. While holding the Shutdown Bypass-Preheat switch preferred. in the ON position, push the Engine Control switch to 3. Constantly check the engine temperature and oil the START position. pressure gauges (sets with Series 3 or 4 panels). 3. As soon as the engine starts, release the start switch 4. Oil consumption is greater during break-in as piston and continue to hold the bypass/preheat switch for rings take time to seat. up to 5 additional seconds. Do not crank the starter 5. Break-In Oil Changes: Change engine oil and filter for more than 10 seconds consecutively. If the engine at 50 hours. Change oil and filter again at 100 hours, fails to start with the first attempt, be sure that it has then at every 200 hours (consult Lubricants section for stopped completely before re-engaging.

  • Page 16: Shutdowns And Alarms

    SPARE PARTS 1. Generator sets have shutdown systems to stop the 1. Northern Lights recommends that you keep the engine in the event of high water temperature, low oil following spare parts on hand for field service. Spare pressure or high exhaust temperature. parts and world class spare parts kits are available a. Other alarms and shutdowns are available as from your local Northern Lights dealer. optional equipment. Contact your Northern Lights dealer for trouble- 2. Northern Lights standard spare parts kit (P/N shooting assistance if not equipped with optional 38-08015)* gauge panels. contains: 2. If optional gauge panels are installed, do the following a. Primary and secondary fuel filter elements when your warning or shutdown system is activated: b. Oil filters a. Engage the preheat switch to check the temperature...

  • Page 17: Servicing Schedule Chart

    Updated 3-16-21 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 200 HOURS: Check oil level in engine SP18 Check condition of batteries Check primary fuel filter SP10 Check cooling water level EVERY 500 HOURS: Change primary fuel filter element AFTER FIRST 50 HOURS: Change secondary fuel filter SP2/3 Change engine oil and filter SP15 Change impeller in raw water pump SP16 Check exhaust elbow AFTER FIRST 100 HOURS: EVERY 1000 HOURS: SP2/3 Change engine oil and filter Change air cleaner element SP6 Check valve clearance EVERY 100 HOURS:...

  • Page 18: Servicing

    Updated 8-7-19 Servicing LUBRICATION - GENERAL SP-2. OIL CHANGES 1. Use only clean, high quality lubricants stored in clean 1. The set is delivered with special break-in oil. containers in a protected area. Change the engine oil and oil filter after 50 hours 2. Use the most current API service category diesel rated of operation. Use diesel-rated break in oil (John Deere oil. Northern Lights recommends the use of multi- pre-packaged or equivalent) during the first 100 hours. viscosity oil. Consult your dealer for more information. 3. Use the proper weight oil for your average operation 2. Change the oil and filter again at 100 hours using the temperature. oil recommended in . After this, change oil and Figure 9 filter every 200 hours. 3. During intermittent cold weather operation, change oil Single Multi- every 100 hours or six weeks, whichever comes first. Temperature Viscosity Viscosity 4. Change oil at any seasonal change in temperature Above 32°F when a new viscosity of oil is required.

  • Page 19: Air Cleaner

    Updated 8-7-19 Servicing SP-4. AIR CLEANER SP-6. VALVE CLEARANCES 1. Inspect air cleaner every 200 hours. In dusty 1. Adjust valve clearance every 1000 hours. conditions check more often. 2. To bring the No. 1 cylinder to top dead center in the 2. Inspect the element. If it is dirty, wash the element compression stroke, align the timing mark; the top in soapy water. Rinse and dry thoroughly before mark of the crank pulley with that of the timing gear re-installing. Replace if necessary. Part number is: case. Remove the rocker arm cover and turn the M673L3 & LD3 - #24-28003 crankshaft foward and backward. If the inlet and exhaust valves of the No. 1 cylinder do not move it is NOTE: Failure to change air cleaner at recommended in top dead center position. When the valves move, times can cause severe engine damage. Change or rock, turn the crankshaft one full turn and align the every 1000 hours or two years, whichever comes top mark of the crank pulley with the top mark of the...

  • Page 20: Fuels - General

    Updated 8-7-19 Servicing FUELS - GENERAL FUEL FILTERS 1. Use only clean, high quality fuels of the following 1. Your generator set should have a primary fuel filter specifications, as defined by ASTM designation D975 installed. We recommend the Racor brand of fuel for diesel fuels: filter-water separators. a. Use Grade No. 2 diesel at ambient temperatures above freezing 32°F (0°C). SP-7. PRIMARY FUEL FILTER b. Use Grade No. 1 at ambient temperatures below a. Check the primary fuel filter daily as freezing and for all temperatures at an altitude of recommended by the filter manufacturer. above 5,500 ft. (1500 meters). Empty the collection bowl as necessary. 2. Use low sulphur or ultra low sulphur fuel. 3. The cetane number should be a minimum of 45. SP-8. PRIMARY FUEL FILTER ELEMENT 4. DO NOT use these unsuitable grades of fuel: b. Change the element as often as necessary or a. Domestic heating oils, all types.

  • Page 21: Cooling System - General

    Updated 8-7-19 Servicing COOLING SYSTEM - GENERAL SP-10. CHECKING COOLANT LEVEL NOTE: Be sure to close the sea-cock before 1. Check the coolant level each day before starting the working on the engine cooling system. engine. Check the water level by removing the pressure cap from the expansion tank. CAUTION: The cooling water in the engine reaches In order to give the cooling water an opportunity to extremely high temperatures. You must use extreme expand, the level should be about 1 in. (2.5 cm) below caution when working on hot engines to avoid the filler cap sealing surface when the engine is cold.

  • Page 22: Injector Service

    Updated 11-8-13 Servicing SP-12. INJECTOR SERVICE SP-13. INJECTION PUMP 1. Injectors should be checked every 1000 hours, or 1. Since operating conditions may vary considerably, it more often as necessary. Check should be made by a is difficult to give a definite interval for checking the Northern Lights dealer or local injection repair injection pump. But as a rule, pump settings, station. maximum speed, idle speed and exhaust smoke should be checked after every 2500 hours of CAUTION: Escaping diesel fuel under pressure operation. Service of the fuel injection pump should can have sufficient force to penetrate the skin only be done if checks indicate pump malfunction. causing serious personal injury. If injured by 2. Black smoke can be an indication of pump escaping diesel fuel, see a doctor at once.
  • Page 23 Servicing Figure 13: Remove delivery line flare nuts. Figure 17: Remove return line. Figure 14: Remove delivery lines. Figure 18: Unscrew injector. Figure 15: Cover lines, inlets and injection pump outlets. Figure 19: Remove and replace copper sealing washer. Figure 16: Remove return line nuts. Figure 20: Reinstall injector.

  • Page 24: Heat Exchanger

    Updated 5-7-21 Servicing SP-14. HEAT EXCHANGER GENERATOR ENDS 1. Clean the heat exchanger core every 24 months, or The maintenance and operation recommendations for after 2500 hours of operation, or as needed. the generator end are located on pages 24-27 under the 2. Drain expansion tank and heat exchanger. heading “AC Generator”. 3. Remove heat exchanger end covers and remove core. 4. Clean the inside of exchanger core tubes using ELECTRICAL SYSTEM - GENERAL a metal rod. Flush, inspect and clean again if necessary. CAUTION: Excessive non-linear loads can lead to regulator and/or generator end failures 5. Reassemble. Fill the cooling system, start the engine and should be no greater than 20% of overall and check for leaks.

  • Page 25: Booster Batteries

    Updated 8-7-19 Servicing BOOSTER BATTERIES SP-19. WINTERIZING, OUT-OF-SERVICE CAUTION: Battery gas can explode. If the generator set will not be used for more than 3 Keep all flames and sparks away from batteries. months the following preparations should be taken for long term storage. 1. Before changing or using booster batteries, check • Change engine oil and filter, as per recommendations battery electrolyte level. Add distilled water if necessary. on page 16. 2. Booster and main batteries must have the same • Run the engine up to at least 140 F from a small, voltage rating. clean source of fuel dosed with either “Stab-il” brand 3. First, connect positive (+) terminal of booster battery fuel system stabilizer (diesel engine formula), or to positive (+) terminal of main battery. Then, connect Stanadyne Performance fuel system conditioner. If negative (-) terminal of booster battery to ground on...

  • Page 26: Ac Generator - Tf-276D

    Updated 1-14-15 AC Generator - TF-276D GENERAL 1. A Generator Set includes the engine, the generator, and the control or “J” box ( Figure 23 2. The generator and the control or “J” box produce the electrical power. 3. Generator excitation is provided by residual magnetism and electrical output voltage is con- trolled by the automatic voltage regulator (AVR) located in the control box ( Figure 25, Item 2 GENERATOR (Figure 24) 1. Stator Core 2. Stator Coil 3. End Cover Figure 23: Composition. 4. Brush 5. Ball Bearing 6. Slip Ring 7. Frame 8. Coupling Plate...

  • Page 27: Connections

    Updated 1-14-15 AC Generator - TF-276D CONNECTIONS 1. 120 Volt Output: a. 120 volt output can be selected by connecting the terminals of the control terminal board to 120 Figure 26 Figure 29: Output Terminal Board, 240 Volt Output 3. 120/240 Volt Output a. Connect the control terminal board for 240 volts Figure 30 Figure 26: Control Terminal Board, 120 Volt Output b. Connect U1 to U2 and V1 to V2 on the output terminal board ( ). Connect 120 volt Figure 27 output leads to terminals U1 and V2.

  • Page 28: Operation

    Updated 1-14-15 AC Generator - TF-276D 4. Voltage Adjustment OPERATION a. If there is some voltage, but it does not build up In order to ensure a long, trouble-free life, the to rated voltage, voltage adjustment can be made generator must be operated properly and the using the “hand trimmer” in the AVR ( specified maintenance must be performed. Figure 32 b. The normal voltage setting at no load is 121 volts at 62 Hertz or 242 volts at 62 Hertz. OPERATING ENVIRONMENT Always keep electrical equipment clean. Moisture, salt, dust, and oil will damage the generator. The operating environment must be kept as clean and moisture free as possible. VENTILATION Good ventilation is important for proper genera- tor operation. When installing the generator set, be sure the ambient temperature does not exceed 40°C (104°F) during operation. Figure 32: Hand Trimmer Location on AVR. MAINTENANCE Proper and effective maintenance is required to 5. Check the ball bearing in the generator end.
  • Page 29 Updated 1-14-15 AC Generator - TF-276D 7. Replacing Brushes 9. Parts: See Parts Book for complete list a. Shut down the generator. Remove four screws a. Bearing and end cover of the generator. Part #22-68305 b. Brush assembly is black plastic with two wires b. Brush assembly leading to it. It is located at ten o’clock and is Part #22-68304 held in position by two screws ( 10. Test Specifications: See Wiring Diagram(s) Figure 34 Remove the screws and unplug leads. a. Resistance of J-K 16.6 ohm at 20°C (68°F) b. Resistance of A-B 0.25 ohm at 20°C (68°F) c. Resistance of U1-V2 0.56 ohm at 20°C (68°F) d. No load voltage setting 242V or 121V at 62 Hz with cold generator Figure 34: Brush Location. c. Attach leads to new brush assembly and install it with the plastic ears towards the front of the generator.

  • Page 30: Troubleshooting

    • Repair or replace. ground wire Starter Cranks Slowly Low battery output • Battery is too small. • Battery cables are too small. Check specific gravity • Replace battery if necessary. of each battery cell (lead acid batteries only) Check electrolyte level • If low, fill cells with distilled water. of each battery Loose or corroded connections • Clean and tighten loose connections. Crankcase oil too heavy • Fill with oil of appropriate viscosity. Entire Electrical System Check DC circuit breaker • 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. Dead Battery • Charge battery. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673L3 5/21...

  • Page 31: Engine

    Updated 2-10-20 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 • Check electrolyte level and condition. Excessive resistance • Clean and tighten all battery connections. in starting circuit Crankcase oil too heavy • Use oil of proper viscosity. Improper type of fuel • Consult fuel supplier and use proper type of fuel for operating condition. Water, dirt or air in fuel system • Drain, flush, fill and bleed system. Clogged primary or secondary • Clean or replace primary filter element, fuel filter element replace secondary filter element. Dirty or faulty injection nozzles • Have your dealer check injection nozzles. Fuel injected but no ignition • Glow plug malfunction.
  • Page 32 • Contact your authorized NL dealer. Below normal engine temperature • Check your thermostats. • Check water temperature to see if temperature gauge is working properly. Engine overheating • See “Engine Overheating” section. High Fuel Consumption Improper type of fuel • Use correct fuel for temperature. Clogged or dirty air cleaner • Service air cleaner. Improper valve clearance • Contact your authorized NL dealer. Injection nozzles dirty • Contact your authorized NL dealer. Injection pump out of time • Contact your authorized NL dealer. Engine overloaded • Check load usage. Engine not at proper temperature • Check your thermostats. • Check water temperature with thermometer and replace gauge if necessary. Below Normal Thermostats not working properly • Check thermostats. Engine Temperature Temperature gauge • Check water temperature with thermometer. not working properly If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673L3 5/21...
  • Page 33 Engine Emits Black Clogged or dirty air cleaner • Service air cleaner. or Gray Exhaust Smoke Defective muffler • Contact your authorized NL dealer to (back pressure too high) check back pressure. Improper fuel • Use correct fuel for temperature. Injection nozzles dirty • Contact your authorized NL dealer. Engine out of time • Contact your authorized NL dealer. Engine Emits Improper fuel • Use correct fuel for temperature. White Smoke Cold engine • Warm up engine to normal operating temperature. Defective thermostat • Remove and check thermostat. Clogged intake hose • Remove and check intake hose. Engine out of time • Contact your authorized NL dealer. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673L3 5/21...

  • Page 34: Bleeding The Fuel System

    Updated 6-23-10 Troubleshooting 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 aren't damaged. Fuel escaping from a very small hole can be almost invisible.

  • Page 35: Data Sheet M673Ld3(G) / M673L3 (G)

    Updated 8-8-19 Northern Lights Marine Data M673L3 (G) M673LD3 (G) Model: 1800 1500 1800 1500 kW Rating Frequency (Hz) GENERAL INFORMATION Cylinders Displacement 46.4 in 46.4 in 46.4 in 46.4 in (0.761 ltr) (0.761 ltr) (0.761 ltr) (0.761 ltr) Cycle Bore 2.64 in 2.64 in...

  • Page 36: Ac Electrical

    Updated 6-24-20 AC Wiring Diagrams OM673L3 5/21...
  • Page 37 Updated 6-24-20 AC Wiring Diagrams OM673L3 5/21...
  • Page 38 Updated 6-24-20 AC Wiring Diagrams OM673L3 5/21...
  • Page 39 Updated 6-24-20 DC Wiring Diagrams OM673L3 5/21...
  • Page 40 Updated 6-24-20 DC Wiring Diagrams OM673L3 5/21...

  • Page 41: Wiring Diagrams

    Updated 8-12-19 Wiring Diagrams OM673L3 5/21...

  • Page 42: Dc Electrical

    Updated 6-2-17 Wiring Diagrams OM673L3 5/21...
  • Page 43 Updated 6-24-20 Wiring Diagrams OM673L3 5/21...
  • Page 44 Updated 6-22-11 AC Wiring Diagrams OM673L3 5/21...
  • Page 45 Updated 6-22-11 AC Wiring Diagrams OM673L3 5/21...

  • Page 46: Panel Wiring Diagrams

    Updated 4-9-12 AC Wiring Diagrams OM673L3 5/21...
  • Page 47 Updated 6-22-11 DC Wiring Diagrams OM673L3 5/21...
  • Page 48 Updated 6-22-11 DC Wiring Diagrams OM673L3 5/21...
  • Page 49 Updated 6-25-20 DC Wiring Diagrams OM673L3 5/21...
  • Page 50 Updated 6-25-20 DC Wiring Diagrams OM673L3 5/21...
  • Page 52 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. © 2021 All rights reserved. Litho USA.

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