MAIN ENGINE STARTING PROCEDURES

MAIN ENGINE STARTING PROCEDURES

Air Systems

▬

Drain water,if any,from the starting air system.

▬

Drain water,if any,from the control air system at te receivers.

▬

Pressurise the air system.

▬

Pressurise the air system the pneumatic exhaust valves.

Note:

Air pressure must be applied before the lube oil pump is started.This is to

prevent the exhaust valves from opening too much.

▬

Engage the lifting/rotation check rod mounted on each exhaust

valve,and check that the exhaust valves are closed.

Lube Oil Systems

▬

Start the lube oil pumps for

●

Engine

●

Camshaft

-

Engines without Unilub:camshaft lube oil pumps,

-

Engines without Unilub:camshaft booster pumps,

●

Turbochargers

If the turbochargers are equipped with a separate,built-in,lubrication

system,check the oil levels through the sight-glasses.

Check the oil pressures.

Check the oil flow through the sight-glasses,for:

●

Piston cooling oil

●

Turbochargers

▬

Check that the cylinder lubricators are filled with the correct type of oil.

▬

Operate the cylinder lubricators manually.

Check that oil is emitted.

Note:

Check regulary during service that the Load Change Dependent lubricators

function properly.See also the producer's special instructions.

Cooling Water Systems

Note:

The engine must not be started if jacket cooling water temperature is

bellow 20ºC.Preheat to minimum 20ºC or,preferably,to 50ºC.

▬

Start the cooling water pumps.

▬

Check the pressures.

Slow-Turning the Engine

This must be carried out to prevent damage caused by fluid in one of the

cylinders,and to check the reversing mechanism.

Before beginning the slow-turning, obtain permission from the bridge.

Note:

Always carry out the slow-turning at the latest possible moment before

starting and,under all circumstances,within the last 30 minutes.

Is the special slow turning device installed?

YES

Follow procedure A

NO

Follow procedure B

A

Slow-turn with Special Slow-Turning Device

1.

Disengage the turning gear.

Check that is locked in the OUT position.

Check that the indicator lamp for TURNING GEAR ENGAGED extinguishes.

2.

Lift the locking plate of the main starting valve to the SERVICE position.

Check the indicator lamp.

●

The locking plate must remain in the upper position during running.

●

The locking plate must remain in the lower position during repairs.

3.

Open the indicator valves.

4.

Turn the slow-turning switch to SLOW-TURNING position.

5.

Move the regulating handle to START position.

Check to see if fluid flows out of any of the indicator valves.

Check that the individual air cylinders reverse the displaceable rollers for

each fuel pump to the outer position.

6.

When the engine has moved one revolution,move the back to STOP position.

7.

Turn the reversing handle to the opposite direction of rotation.

Repeat points 5 and 6.

8.

Turn the slow-turning switch back to NORMAL position.

9.

Close the indicator valves.

B

Slow-turn with Turning Gear

1.

Open the indicator valves.

2.

Give REVERSING order by moving the reversing handle to the opposite direction

of rotation.

3.

Turn the engine one revolutıon with the turning gear in the direction indicated

by the reversing handle.

Check to see if fluid flow out of any of the indicator valves.

Check that the individual air cylinders reverse the displaceable rollers for

4.

Repeat points 2 and 3 in the opposite direction of rotation.

5.

Close the indicator valves.

6.

Disengage the turning gear.

Check that is OUT position.

Check te indicator lamp for TURNING GEAR ENGAGED extinguishes.

7.

Lift the locking plate of the main starting valve to the SERVICE position.

●

The locking plate must remain in the upper position during running.

●

The locking plate must remain in the lower position during repairs.

Fuel Oil System

▬

Start the fuel oil supply pump and circulating pump.

If the engine was running on heavy fuel oil until stop,the circulating pump is

already running.

▬

Check to pressure and temperatures.

Checking the Fuel Regulating Gear

▬

Close the shut-off valve of the starting air distributor to prevent the engine

from turning.Check the indicator lamp.

▬

Switch over to control from the engine side control console.

▬

Turn the regulating handwheel to increase the fuel pump index,and check that

all pumps follow to the FUEL SUPPLY position.With the regulating handwheel

back in STOP position,check that all the fuel pumps show zero-index.

▬

Open the shut-off valve of the starting air distributor.

Check that the indicator lamp extinguishes.

Miscellaneous

▬

Lubricate the bearings and rod connections in the regulating gear,etc.,at the

intervals stated in Chapter 702,Check A9.

▬

Switch on the electrical equipment in the console.

▬

Set switch for auxiliary blowers in AUTO position.

The blowers will start at intervals of 6sec.

Note:

See the Warning of scavenge air box fire due to incorrectly working auxiliary

blowers on page 704.01.

The engine is now ready to start.

STARTING-UP

Starting

Start the engine as described under START order in Item 8 for fixed pitch

propeller plants and in Item 9 for controllable pitch propeller plants.

Note:

If the engine has been out-of-service for some time,starting-up is usually

performed as a quay-trial.Prior to this,it must be ascertained that:

1.

The harbor authorities permit quay-trial.

2.

The mooring are sufficient.

3.

A watch is kept on the bridge.