Continental Refrigerator IO-240-A, Инструкция по установке и эксплуатации

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IO-240 Series Engine Installation & Operation Manual 4-23
31 October 2011
Engine Operation
3. Periodically feel the top of the engine for warmth. Apply heat directly to the
induction tubes and cylinders to promote fuel vaporization and ease starting.
Alternately heat the sump and engine cylinders until engine start.
4. Start the engine immediately after completion of the preheating process. Since the
engine will be warm, follow the normal start instructions in Section 4-3.2.
CAUTION: If oil pressure is not indicated within 30 seconds, shut
down the engine and determine the cause. Operating the engine
without oil pressure may result in engine damage.
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Do not close the cowl flaps in an attempt to hasten engine warm-up.
5. Operate the engine at 1000 RPM until some oil temperature is indicated.
a. Monitor the oil pressure closely. If necessary, retard the throttle to maintain oil
pressure below 100 psi. If oil pressure is less than 30 psi, or cannot be maintained
below 100 psi, shut the engine down and repeat the preheat process. Do not close
the cowl flaps to facilitate engine warm-up.
b. Monitor the oil temperature until it reaches at least 75° F (24° C).
WARNING
Operating the engine above 1700 RPM before reaching the
minimum oil temperature may result in engine malfunction,
engine failure, injury or death.
6. Run the engine up to 1700 RPM; in 100 RPM increments to prevent oil pressure
from exceeding 100 psi.
CAUTION: Continually monitor oil pressure during run up.
7. When oil temperature has reached 75° F (24° C) and oil pressure does not exceed 60
psi at 2500 RPM, the engine has been warmed sufficiently to accept full rated power.
4-5.1.1.2. Engine Preheat with an Engine-Mounted Preheater
WARNING
Do not leave an engine-mounted pre-heater system on for more
than 24 hours prior to flight. Continuous operation of engine-
mounted preheater systems may result in aggressive internal
engine corrosion.
If a heated hangar is not available and the aircraft and engine have been exposed to
temperatures below 20º F (-7º C) for two hours or more and has an engine-mounted
preheating system the following procedure may be used.
Engine mounted preheating systems should include individual cylinder head heater
thermocouples, oil sump heater pad and crankcase heater pad. The use of a nacelle blanket
will increase the effectiveness of engine preheating.
1. Follow the preheating system's manufacturer's installation and operation instructions.
2. Begin preheating of the engine at least five hours prior to expected departure. Do not
operate an engine preheating system continuously for more than 24 hours.