The servicing of generator sets presents unique
problems. In many cases, the generator sets cannot
be moved to a repair facility. Failures often occur
in remote areas far from competent assistance;
therefore, maintenance schedules must be adhered
As operator, it is your obligation to learn about your
equipment and its proper maintenance. This is not a
comprehensive technical service manual. Nor will it
make the reader into an expert mechanic. Its aim is
to aid you in maintaining your unit properly.
to more strictly. Failures begin with minor problems
that are overlooked and become amplified when not
corrected during routine maintenance.
Unit Identification
MODELS INCLUDED
This manual covers the operating instructions for:
NL498K2 and NL498D2 industrial generator sets.
Model Numbers
Model numbers give the unit's application, block model, aspiration, and RPM:
NL
498
K2 & D2
NL - Northern Lights industrial generator set
NL498K2
Northern Lights industrial generator
=
set with a 498 engine and a
PX-332K generator end, Tier II.
Serial Numbers
Northern Lights
4420- 14th Ave. NW
Seattle, WA 98107
Figure 1: Generator set serial number plate.
Model number of engine block
+
CylindersBore
498 mm
NL498D2
Northern Lights industrial generator set with
=
a 498 engine and a UCI224C16 generator end,
Tier II, 4 valve.
+
K2 - Taiyo Generator End
D2 - Stamford Generator End
Your set has three serial numbers: ➀ an engine number stamped
on a plate attached to the valve cover, ➁ a generator end serial
number, and ➂ a generator set serial number.
NOTE: Always use the generator set serial number when ordering
parts or in correspondence. The generator set serial number plate is
found on the service side of the generator and resembles the drawing
in Figure 1.
ONL498-2 03/06
4
Warranty
A warranty registration certificate is supplied
with your set. It entitles the original purchaser of
our equipment to a warranty covering material
or assembly faults. The extent of coverage is
NOTE: If the warranty is to apply, the servicing
instructions outlined in this manual must be
followed. If further information is needed, please
contact an authorized dealer or the factory.
described in the Limited Warranty Statement. We
recommend that you study the statement carefully.
Safety Rules
CAUTION:
You can avoid accidents by observing these safety rules. Study these rules carefully and enforce them on the job.
• Never leave engine without proper security.
• Turn the coolant tank cap slowly to relieve
pressure before removing. Add coolant only
when the engine is stopped and cool.
• Mount a fire extinguisher near engine.
• Always disconnect the battery ground strap
before making adjustments.
• Operate engines in properly ventilated areas.
• Keep trash and other objects away from engine.
• Escaping fluids under pressure can penetrate
your skin. Use a piece of cardboard or wood,
not your hands, to search for leaks.
• Avoid wearing loose clothing without a belt
when working around engines.
Accident reports show that careless use of engines causes a high percentage of accidents.
• Use caution in handling fuel. Never refuel a hot
or running engine. Do not smoke while filling
fuel tank or servicing fuel system.
• Keep your hands, feet, hair and clothing away
from power-driven parts.
• Check for any loose electrical connections or
faulty wiring.
• Engines should be operated only by
knowledgeable, qualified personnel.
• Look completely around engine to make sure
that everything is clear before starting.
• Do not operate an engine that isn't in proper
working order. If an unsafe operating condition is
noted, tag the set and control panel so others will
also know about the problem.
• Do not oil or grease engine while it is running.
CAUTION: This symbol is used throughout
this book to alert you to possible danger areas.
Please take special notice of these sections.
Proposition 65 Warning:
Diesel engine exhaust and some of its constituents
are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
• Provide first aid kits.
CALIFORNIA
ONL498-2 03/06
5
Industrial Generator Component Locations
1
6
5
2
4
3
8
7
9
11
1012
21
20
Figure 2A & B: NL498D2
1.Control Panel
2.Generator Junction Box
3.DC Circuit Breaker
4.AVR Fuse
5.Air Cleaner
19
17
16
13
6.Exhaust Elbow
7.Muffler
8.Secondary Fuel Filter
9.Rocker Arm Cover
10. Fuel Injection Pump
16
15
14
13
18
11. Lube Oil Fill
12. Radiator Shroud
13. Lube Oil Filter
14. Fuel Return Manifold
15. Lube Oil Dipstick
7
16. Primary Fuel Filter
17. Alternator
18. Exhaust Manifold
19. Oil Pan
20. Flywheel Housing
21. Starter
ONL498-2 03/06
6
Control Panels
1. SHUTDOWN BYPASS-PREHEAT SWITCH
There are two functions built into this switch:
preheating the engine and bypassing the engine safety
shutdown circuit, enabling a quicker start. Hold the
switch in the ON position for approximately 10 to 20
seconds before starting a cold engine. Holding the
switch ON for too long can burn out the glow plugs.
NOTE: Three position Engine Control switches must be
in the RUN position during preheating. Preheat switch
must be held in ON position during starting.
Figure 3-A: Series 1-B Generator Control Panel
Figure 3-B: Series 3 Generator Control Panel
2. ENGINE CONTROL SWITCH
To start the engine, hold this switch in the START
position until the engine is running.
After the engine starts, release the switch and it will
return to RUN position. To stop the engine, hold the
switch in the STOP position.
NOTE: The rocker switch is used on Series 1 panels
only, and has a light that glows when the set is running.
3. HOUR METER
Keeps track of engine running time.
4. OIL PRESSURE GAUGE
Shows the oil pressure in the engine lubricating system.
5. WATER TEMPERATURE GAUGE
Registers the temperature of the cooling water.
6. D.C. VOLTMETER OR AMMETER
When the engine is stopped, the voltmeter indicates the
condition of the battery. When the engine is running, the
voltmeter indicates the voltage output of the alternator.
ONL498-2 03/06
7
Control Panels
Figure 4:Series 7.1 through Series 7.6 Generator
1. SHUTDOWN BYPASS SWITCH
Manual Start Panels
(S-7.1 and S-7.3)
There are two functions built into this switch:
preheating the engine and bypassing the engine safety
shutdown circuit, enabling a quicker start. Hold the
switch in the ON position for approximately 10 to 20
seconds before starting a cold engine. Holding the
switch ON for too long can burn out the glow plugs.
NOTE: Three position Engine Control switches must be
in the RUN position during preheating. Preheat switch
must be held in ON position during starting.
Auto Start Panels
(S-7.2, S-7.4, S-7.5, and S-7.6)
When the switch is placed in the AUTO START
position, the unit will automatically start when there is
a drop in utility power.
2. OIL PRESSURE GAUGE
Shows the oil pressure in the engine lubricating system.
3. HOUR METER
Keeps track of engine running time.
4. ENGINE TEMPERATURE GAUGE
Registers the temperature of the coolant.
Control Panels.
5. D.C. VOLTMETER
When the engine is running, the voltmeter indicates the
voltage output of the alternator.
6. STATUS INDICATOR PANEL
Engine monitoring alarms and lamps for monitoring
engine functions.
7. ALARM LAMP TEST AND RESET BUTTON
Press UP to test the indicator lights and press DOWN
to reset the alarm.
8. A.C. VOLTAGE ADJUSTMENT RHEOSTAT
Voltage has been set at the factory and should only be
adjusted by factory-trained personnel.
9. AMMETER SELECTOR SWITCH
Used to check each phase for load condition.
NOTE: Always leave this switch in the ON position
while the unit is running.
10. FREQUENCY METER (HERTZ)
The frequency meter indicates alternator current
frequency: 60 Hz (1200 or 1800 RPM), or 50 Hz (1500
RPM).
11. A.C. VOLTMETER
Shows the generator output voltage.
12. A.C. AMMETER
Shows the generator load on each phase. The phase is
selected with the Ammeter Selector switch (Item 9).
ONL498-2 03/06
8
Operating Procedures
BREAK-IN PERIOD
1. The first 100 hours on a new or reconditioned
engine are critical to its life and performance.
2. Constantly check the engine temperature and oil
pressure gauges.
3. Oil consumption is greater during break-in as
piston rings take time to seat.
4. Break-In Oil Changes: Change engine oil and
filter at 50 hours. Change oil and filter again at
100 hours (consult Lubricants section for oil
recommendation), then every 250 hours.
5. Retighten head bolts at 50 hours.
Operating Instructions:
Maintain at least a 75% load on your generator
set for the first 100 hours. If this is not possible,
maintain no less than a 50% load to ensure proper
seating of the piston rings. Vary the load to help
seat the rings.
BEFORE STARTING
1. Check the water level by removing the pressure
cap from the radiator. In order to give the cooling
water an opportunity to expand, the level should be
about 1 in. (2.5 cm) below the filler cap sealing
surface when the engine is cold.
CAUTION: Use protective clothing and open
the filler cap carefully when the engine is warm
to prevent burns.
STARTING
1. Hold the Shutdown Bypass-Preheat switch in the
ON position for 10 to 20 seconds before starting a
cold engine. Holding the switch too long can burn
out the heater elements. This step is not necessary if
the engine is already warm.
2. While holding the Shutdown Bypass-Preheat switch
in the ON position, push the Engine Control switch
to the START position.
3. As soon as the engine starts, release both switches.
Do not crank the starter for more than 20 seconds
consecutively. If the engine fails to start with the
first attempt, be sure that it has stopped completely
before re-engaging.
OPERATING
1. Units with Series 3 and Series 7 Control Panels:
check gauges often. Oil pressure must be above 15
PSI. The D.C. voltmeter should read between 11 and
15 volts at 80°F (25°C) ambient temperature. The
water temperature gauge must be below 200°F
(94°C). Check the A.C. voltage and frequency
meters (Series 7 panel). If the gauges deviate from
normal levels, shut down the generator set and
investigate.
2. Let the unit run unloaded for a three to five minute
warm-up period.
3. Add electrical load.
STOPPING
2. Check the oil level in the crankcase with the
dipstick. The oil level must be between high and low
marks on the stick. Never allow the level to go
below this area. Always add the same viscosity of oil
as is already in the crankcase.
3. Check the fuel tank level and open any fuel valves
on the tank and at the secondary fuel filter.
4. Turn on any optional battery switch that may have
been installed.
ONL498-2 03/06
1. Remove electrical load from the generator set.
2. Run the engine for a three to five minute cool-down
period.
3. Move the Engine Control switch to the STOP
position until the engine stops completely.
4. Shut off fuel valve at the tank.
9
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