M - Northern Lights marine generator set Bore Cylinders 67 mm Northern Lights marine diesel generator set with a 673 engine, TF-276M generator end, M673M and an automatic voltage regulator. Northern Lights marine diesel generator set with a 673 engine, TF-276D generator end, M673L and an automatic voltage regulator.
• Do not oil or grease engine while it is running. • Provide fi rst aid kits. CAUTION: This symbol is used throughout this book to alert you to possible danger areas. Please take special notice of these sections. OM673 09/09...
13. Generator Control Box 20. Sea Water Pump 27. Fuel Inlet and Return 5. Wet Exhaust Elbow 14. AC Circuit Breaker 21. Lube Oil Fill- Side 28. AVR Circuit Breaker 6. Generator End Cover 7. Base and Drip Pan OM673 09/09...
NOTE: Always leave this switch in the ON position while the unit is running. 10. A.C. AMMETER Shows the generator load on each phase. The phase is Figure 6-C: Series 4 Generator Control Panel selected with the Ammeter Selector switch (Item 9). OM673 09/09...
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Shows the generator output voltage. 12. A.C. AMMETER Shows the generator load on each phase. The phase is Figure 7-B: Status Indicators for Series 7.3 through selected with the Ammeter Selector switch ( Item 9 Series 7.6 Generator Control Panels. OM673 09/09...
1. Remove electrical load from the generator set. 2. Run the engine for a 3 to 5 minute cool down period. 2. Move the Engine Control switch to the STOP posi- tion momentarily. 3. Marine Sets: shut off the seacock, fuel valve, and battery switch. OM673 09/09...
fi eld service. The parts are pressure. available from your local Northern Lights dealer. a. Generator sets have shutdown systems to stop the Some marine models already have “On-Board-Kits,”...
5) After fi rst 50 hours, and again after fi rst 100 hours, then every 2) Consult manufacturer's maintenance schedule, note on chart. 250 hours. 3) Whenever necessary. 6) Change air cleaner element at 1000 hours. 4) More often if necessary. OM673 09/09...
Keep dirt, scale, water, and other foreign matter #24-52020 out of fuel. b. Avoid storing fuel for long periods of time. c. Fill the fuel tank at the end of each day’s operation. This will reduce condensation. Found on all M673M, D, & L units OM673 09/09...
4. If the engine does not start after the above bleeding process, loosen a fuel line at the injector. Crank the engine until fuel escapes, then tighten the connec- tion. Do each line one at a time. 5. After the engine has started, check for fuel leaks. OM673 09/09...
1. Injectors should be checked every 600 hours. Check 1. Since operating conditions may vary considerably, it should be made by a Northern Lights dealer or local is diffi cult to give a defi nite interval for checking the injection repair station.
It is located in the side of the a metal rod. Flush, inspect and clean again if neces- generator junction box. sary. 5. Reassemble. Fill the cooling system, start the engine and check for leaks. OM673 09/09...
(+) terminal of main battery. Then, connect negative (-) terminal of booster battery to ground on the engine block ( see Figure 21 4. Remove booster battery after starting engine. 5. Sealed batteries: See manufacturer charging and booster instructions. Figure 21: Battery connections. OM673 09/09...
240 Figure 27 Figure 27: Control Terminal Board, 240 Volt Output b. Connect U2 to V1 on the output terminal board Figure 30: Output Terminal Board, 120/240 Volt Output Figure 28 OM673 09/09...
Dust and foreign material may reduce the fl ow of d. Generator bearing should be replaced by your cooling air, reducing heat dissipation and causing Northern Lights dealer at 10,000 hours. the generator to overheat. 6. Check the brushes b.
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8. Generator Protection To protect the generator and AVR from unbalanced loads and over loads, two 20 amp breakers are placed in the output circuit and one 3 amp breaker is placed in the AVR sensing circuit ( Figure 34 OM673 09/09...
• Clean and tighten battery and harness plug connections. Sulfated or worn out batteries • Check specifi c gravity and electrolyte level of each battery. Dead Battery • Charge battery. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673 09/09...
• See “Engine Overheats” in next category. Below normal engine temperature • Remove and check thermostat. Improper valve clearance • Reset valves. Best done by dealer. Dirty or faulty injection nozzles • Replace injectors. Best done by dealer. • See your local dealer. OM673 09/09...
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• Fill crankcase to proper level. Improper type of oil • Drain and fi ll crankcase with correct oil. Partially plugged oil fi lter • Replace fi lter. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673 09/09...
Cold engine • Warm up engine to normal operating temperature. Defective thermostat • Remove and check thermostat. Engine out of time • See your dealer. If you cannot correct problems with these procedures, see your Northern Lights dealer. OM673 09/09...
Northern Lights Marine Data M673D M673M M673L Model: 1800 1500 1800 1500 1800 1500 kW Rating Frequency (Hz) GENERAL INFORMATION Cylinders Displacement 41.1 in 41.1 in 41.1 in 41.1 in 46.4 in 46.4 in (0.676 ltr) (0.676 ltr) (0.676 ltr) (0.676 ltr)
Northern Lights Marine Data M673D M673M M673L Model: 1800 1500 1800 1500 1800 1500 kW Rating Frequency (Hz) ELECTRICAL Minimum Battery Capacity (Amp/hr) Battery Cable Size #1 up to 10 ft #1 up to 10 ft #1 up to 10 ft...
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