Northern Lights NL673L, Operator'S Manual

Page: 15 / 40

ONL673L 7/13
13
BREAK-IN PERIOD
1. The fi rst 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 (sets with Series 3 or 4 panels).
3. Oil consumption is greater during break-in as
piston rings take time to seat.
4. Break-In Oil Changes: Change engine oil and
fi lter at 50 hours. Change oil and fi lter again at
100 hours (consult Lubricants section, p. 11, for
oil recommendation).
Operating Instructions:
Maintain at least a 75% load on your generator
set for the fi rst 100 hours. Vary the load will help
seat the rings.
BEFORE STARTING
1. Check the water level by removing the pressure
cap from the expansion tank or radiator. In order to
give the cooling water an opportunity to expand, the
level should be about 1 in. (2.5 cm) below the fi ller
cap sealing surface when the engine is cold.
CAUTION: Use protective clothing and open the
fi ller cap carefully when the engine is warm to
prevent burns.
2. Check the oil level in the crankcase with the dip-
stick. The oil level must be in the waffl ed area 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
STARTING FOR S-1, S-1B, S3, AND S4
SEE PAGE 6 FOR S7
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
glow plugs.
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
fi rst attempt, be sure that it has stopped completely
before re-engaging.
OPERATING
1. Units with Series 3, Series 4, 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 225°F
(107°C). Check the A.C. voltage and frequency meters
(Series 4 and 6 panels). If the gauges deviate from
normal levels, shut down the generator set and investi-
gate.
2. Let the unit run unloaded for a 3 - 5 minute warm-up
period.
3. Add electrical load.
STOPPING
1. Remove electrical load from the generator set.
2. Run the engine for a 3 to 5 minute cool down period.
3. Move the Engine Control switch to the STOP
position
momentarily.
Operating Procedures