FPT NEF Series Guida utente
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ENGINE TECHNICAL DATA NEF67TM7
The technical code and serial number are specified on the nameplate
positioned on different parts of the engine, depending on the model:
flywheel case, tappet cover, coolant tank, etc.
(*)Net power at the flywheel in accordance with the standard ISO
8528. Test conditions: T 25 °C; atmospheric pressure 100 kPa;
relative humidity 30%.
C o d e NEF67TM7
Engine family F4
Cycle Diesel 4-stroke
Number and arrangement
of cylinders 6, in line
Bore x stroke 104 x 132 mm
Total displacement 6,728 cm3
Air supply Supercharged with turbocharger +
intercooler
Injection method Direct injection with rotary pump
Compression ratio 17.5 : 1
Cooling Liquid
Engine rotation direction Anti-clockwise (flywheel side view)
Control system Mechanical
Dry weight ~640 kg (G-Drive)
Electric system 12 V
Battery capacity 100 Ah
Pick-up current 60 A
Maximum input 3 kW
Discharge current
(EN 50342) 650 A
Performance (*) NEF67TM7
Non Emissions
Certified
50 Hz
Prime 176.5 kWm @ 1,500 rpm
Stand-by 194 kWm @ 1,500 rpm
60 Hz
Prime - kWm @ 1,800 rpm
Stand-by - kWm @ 1,800 rpm
Engine idle
speed unladen
50 Hz
60 Hz
1,500 rpm
- rpm
Maximum
engine rpm
unladen
50 Hz
60 Hz
1,570 rpm
- rpm
It is strictly forbidden to alter the aforesaid
characteristics and, in particular, to modify the
calibration of the injection pump or the characteristics
of the engine and its components. Failure to comply
with the above shall result in the loss of warranty, in
addition to FPT declining all responsibility.
Electric system 12 V
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NEF67TM7
1. Comburent air intake duct to turbocharger -2. Exhaust manifold -
3. Turbocharger - 4. Heat exchanger lubricant oil / coolant - 5. Exhaust
gas outlet duct from turbocharger – 6. Engine coolant outlet pipe -
7. Fan (radiator) - 8. Engine coolant inlet pipe - 9. Oil filter – 10. Electric
starter motor.
NEF67TM7
1. Coolant inlet plug - 2. Lubricant oil filler cap - 3. Comburent air
intake duct to engine - 4. Control valve (blow-by) - 5. Lifting eyelet -
6. Oil vapour breather pipe - 7. Rotary fuel supply pump - 8. Fuel
suction pump - 9. Fuel filter - 10. Heat exchanger external air / coolant.
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NEF67TM7
1. Turbocharger lubrication oil delivery pipe - 2. Fan control pulley -
3. Oil level dipstick - 4. Crankshaft pulley - 5. Water pump -
6. Alternator - 7. Automatic belt tensioner - 8. Lifting eyelet.
NEF67TM7
1. Air filter - 2. Comburent air intake duct to intercooler - 3. Lubricant
oil return pipe from turbocharger - 4. Engine mounts - 5. Lubricant oil
drain plug - 6. Oil sump - 7. Engine flywheel.
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LABELS
Some warning labels (below the description) are affixed to the engine.
Note: labels containing an exclamation mark highlight a potential
danger.
Hoisting point (engine only).
Fuel filling cap
(on the tank, if present).
Lubricant oil filling cap.
Lubricant oil level dipstick.
Risk of burns:
Expulsion of pressurized hot water.
Risk of burns:
Presence of parts at high temperature.
Risk of fire:
Presence of fuel.
Risk of injury
from moving parts:
Presence of fans, pulleys, belts and other
objects.
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USE
PRELIMINARY CHECKS
Each time before starting the engine:
Check and top up the level of the technical fluids, if necessary (fuel,
engine oil and coolant).
Make sure that the air intake filter is not obstructed or clogged and
check, at the same time, that the visual indicator (1) on the filter is
not showing the “red” signal. The air filter clogging visual indicator
(1) signals when it is necessary to carry out maintenance in order
to protect and optimize filter operation. The sensor (1) remains
locked in the alarm position ("red") until it is reset.
Note: the required procedures for filter cleaning are specified
in the chapter CHECKS AND MAINTENANCE.
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ATTENTION!
Make sure that the environment where the engine will
operate is free of combustible vapours or gases. Make
sure that there is sufficient ventilation and a suitable
exhaust gas extraction system for closed environments.
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ENGINE PRE-HEATING (optional)
The engines which require low start-up temperatures and an
immediate delivery of power may be equipped with an electrical
heating device enabling an increase in the temperature of the air
entering the engine. The device is mounted on the intake manifold and
is fitted with a coolant temperature sensor which interrupts the power
supply once the required temperature has been reached.
SWITCHING OF OPERATING FREQUENCY
Based on the specific operational requirements of the engine, it is
possible to vary the adjustment of the rotary injection pump so as to
obtain a different operating frequency:
- 1,500 rpm @ 50 Hz
- 1,800 rpm @ 60 Hz
To switch from 50 Hz to 60 Hz it is necessary to turn the adjustment
screw (1) of the “droop setting”, clockwise a number of turns
depending on the identification code of the pump indicated on the
nameplate.
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FOR PROPER ENGINE USE
Check there is sufficient fuel in the tank before each start.
Avoid prolonging the duration of the start control.
Do not idle for long periods since this increases the production of
harmful emissions from the engine and does not guarantee its
optimum performance.
The engine speed must be increased and decreased gradually so as
to permit normal combustion and the optimum functioning of all
engine components.
During use, check periodically that:
- the temperature of the engine coolant does not reach the alarm
thresholds;
- the oil pressure remains within normal values.
The speed and power values must comply with that specified in the
technical-commercial documentation.
Particular attention must be paid to engines that equip the
emergency generating units for which frequent efficiency checks are
required in order to guarantee their prompt start in all cases when
required.
SPECIAL WARNINGS
High coolant temperature
In the event of an excessive temperature or the signalling of the alarm,
disengage the load and stop the engine in order to check the condition
of the cooling circuit.
Also check and have the following checked:
the condition of the ancillary belt;
the operation of the thermostatic valve;
the cleanliness of the heat exchanger (radiator).
Low lubricant oil pressure
Should the pressure indicated by the instrument be considered
insufficient or if the “low oil pressure” warning light comes on, stop the
engine and check the oil level. If necessary, top up the oil according to
the instructions contained in the section CHECKS AND
MAINTENANCE. If the fault persists, contact a Service centre.
ATTENTION!
When the engine is hot, pressure builds up in the
cooling circuits which may eject hot liquid violently,
resulting in a risk of burns.
Open the filler cap of the coolant tank only if necessary
and only when the engine is cold.
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Presence of water in the fuel filter
It is advisable to drain the water from the filters before the relevant
warning light comes on.
Do not use the engine if the tank only contains the quantity of fuel kept
as reserve; this condition promotes the formation of condensate and
the intake of sludge or air, causing the engine to stop.
Intake and exhaust circuit inefficiencies
Regularly inspect the cleanliness of the air intake circuit. The
maintenance intervals indicated in this manual change with the
conditions of use.
Maintenance checks must be performed more frequently in
particularly dusty environments with regard to that stated in the
chapter CHECKS AND MAINTENANCE.
Electrical start-up system irregularities
Periodically check the cleanliness and efficiency of the batteries,
particularly during winter, by performing the checks and top-ups as
described in the chapter CHECKS AND MAINTENANCE.
In the event of battery replacement, please observe the characteristics
contained in the section ENGINE TECHNICAL DATA.
Refuelling from drums or jerry cans may contaminate
the diesel, resulting in problems with the fuel supply
system; in these cases it is necessary to carry out
adequate filtration or sedimentation of any impurities
present.
ATTENTION!
The couplings of the fuel circuit under high pressure
must not be loosened under any circumstances
ATTENTION!
Visually check that the exhaust circuit is not obstructed
or damaged to prevent noxious and dangerous fumes.
If the voltmeter indicates a voltage value lower than 11
V (for nominal 12 V systems), or 22 V (for nominal 24
V systems), contact a specialised workshop and have
the efficiency of the batteries and charging system
diagnosed.
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Battery or alternator recharging faults
Check or have checked periodically the state of cleanliness, wear and
the correct movement of the drive belt.
RUN-IN
Thanks to modern engine construction technologies, a particular run-
in procedure is not required. However, it is recommended to avoid
using the engine at high power for long periods during the first 50
hours.
CAPACITIES
NEF67TM7
(1)Use a 50% mixture of water and PARAFLU 11 or the equivalent
corresponding to the specification SAE J1034.
(2)Use lubricants which comply with the international specifications
ACEA E5-E7 (high power engines). Oil consumption is considered
acceptable up to quantities of 0.1% of fuel consumption.
(3)The quantities indicated refer to the first filling only and concern the
engine, oil sump and filter.
(4)The quantities indicated only refer to the engine in its standard
configuration.
(5)The quantities indicated refer to the total capacity of the generating
unit including the capacity of the engine, radiator and pipes.
The batteries contain an acid solution, which is caustic
to skin and corrosive for garments; while checking
them, wear protective garments, gloves and goggles, do
not smoke or permit open flames to come near them
and make sure that the room where they are located
is suitably ventilated.
ATTENTION!
The ancillary members are located under protective
grilles. Their removal must be carried out only when the
engine is not turning.
Parts to be refilled litres (kg)
Cooling circuit (1) engine (4) 10.5
G-Drive (5) 25.5
Lubrication circuit (2) (3)
Periodic replacement:
Sump at minimum level
Sump at maximum level
17.2 (15.8)
8 (7.4)
12 (11)
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