2
ONL844T4E 3/18
This manual covers the operating instructions for:
•
NL844T4E
industrial generator sets.
NLI Model numbers provide information about the unit's application, block model, aspiration, emission compliance level
and fuel delivery type:
The servicing of industrial generator sets presents
unique challenges. Generators cannot be compared
to the servicing of automobiles, trucks, or even farm
equipment. In many cases, these generators are installed
far from a repair facility. Generators are heavily taxed
and used for critical installations; therefore, maintenance
schedules must be adhered to strictly.
Failures often begin with minor problems that are
overlooked and become amplified when not corrected
during routine maintenance.
This manual will help you maintain your unit
properly. Consult the factory or technical manual for
more comprehensive information on repair or rebuild.
Introduction
Unit Identification
Model Numbers
Serial Numbers
NL -
Northern Lights
industrial generator set
NL
Model number of engine block
Bore
Cylinders
84
mm
4
844
Your set has three serial numbers:
1
an engine number stamped on
a plate attached to the valve cover,
2
a generator end serial number,
and
3
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
.
Figure 1:
Generator set
serial number
plate.
Serial
Part
Adapter
Frame
Lead
Amb. °C
RPM
Phase
Hertz
Rule
Insula.
Duty
KW
KVA
°Rise
PF
Volts
Volts
Amps
Amps
FL V DC
FL Amp
NEMA
Northern Lights, Inc., Seattle, WA U.S.A.
(206) 789-3880 www.northern-lights.com
ISO:9001 Certified
00-60010
4 -
US EPA Tier IV
compliant
4
Northern Lights industrial generator set with an 844 engine, turbocharged US EPA Tier IV compliant with an electronic
fuel delivery system.
NL844T4E
=
T -
Turbocharged
T
E -
Electronic fuel
delivery
E
