Cold Weather Starting (Note: A water jacket heater is recommended for
stand-by generator set applications installed in a cold climate.)
Preheater
The glow plug system supplies heat to the cylinders so
that compression temperatures are sufficient to ignite the fuel.
To aid in starting the genset engine when the temperature
is 50 °F(10.0°C) or below, an intake air preheater is available. Preheater
equipment consists of a hand-priming pump to pump fuel into the intake
manifold, and a switch to turn on the glow plug which is electrically heated by
the battery. Fuel burns in the intake manifold and heats the intake air.
Warning: Do not use vapor in conjunction with the preheater. To do so could
result in a fire.
Steps to use the preheater for cold starting:
1. Set the throttle in idle position. Turn the glow plug
toggle switch to the “NO” position. The red indicator light must be on.
2. After the red light has been on for 20 seconds, start
cranking the engine. As soon as the engine begins rotating, operate the
preheater priming pump to maintain 80 to 100 psi (552 to 693kPa) fuel pressure.
Use of the primer before the 20 seconds interval will wet the glow plug and
prevent heating.
3. If the engine does nor start within 30 seconds, stop
cranking. Wait one or two minutes and repeat the cranking operation.
4. After the engine starts, pump the primer slowly to
keep the engine idling smoothly. In cold weather this may require 4 to 5
minutes or longer. Do not accelerate the engine.
5. When the engine has warmed up so it does not falter
between primer strokes, stop pumping. Close and lock the primer. Turn off the
glow plug toggle switch. (The red indicator light will go out.)
6. If the engine gives no indication of starting during
the first three full strokes of the preheater pump, touch –check the intake
manifold for heat. If there is no heat, check the electrical wiring. If the
wiring is all right, remove the intake manifold and check the preheater.
Note: The preheater priming pump, switches and
resistor are located at the instrument panel and should be checked during
engine starting.
The cold starting aid, approved for use
in Cummins Engines, has been based upon starting aid capabilities to
-25°F(-32°C).
Cautions: Do not attempt to use vapor compound type
starting aids near heat, open flame or on engines equipped with a glow plug
system.
Recommended Starting Technique Using Fleetguard Starting
Aid
1. Set the throttle for idle.
2. Disengage the driven unit or make sure gears are in
neutral.a
3. Open the manual fuel shut-down valve, or electric
shut-down valve, whichever is used.
4. Engage the starter and while cranking, apply metered
amounts of starting fluid until the engine idles smoothly.
Use of Starting Fluid Without Metering Equipment
1. Spray starting fluid into the air cleaner intake,
while a second man cranks the engine
Warning: Never handle starting fluid near an open flame. Never use it with a
preheater or flame thrower equipment. Do not breathe the fumes. Use of of too
much will cause excessively high pressures and detonation, or over speed the
engine.
2. Starting aid fumes will be drawn into the air intake
manifold and the cold engines should start without difficulty.
Warning: Fuel oil or volatile fuel cold starting aids are
not to be used in underground mine or tunnel operations. If the engine is so
equipped check with the local U.S. Bureau of Mines Inspector for use of the
starting aid.
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