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 Caution! : 

Stop the generating set and the cut the 

battery supply before working on the electrical circuit.

Alternator belt

Make this check after running the generating set when 

the belt is hot.

 Caution! : 

Some parts of the generating set can be 

extremely hot.
Check the belt tension by pushing down at midpoint be-

tween the drive pulley and the alternator pulley.
If  the  belt  is  too  slack,  untighten  the  alternator  fixing 

bolts 

A

 and move the alternator to adjust the belt ten-

sion.
Visually check the belt: Check that it is not overly worn 

and that the belt strip is not frayed. Replace it if even the 

most minor defect is noted.

Check the electrolyte level

The  generating  set  starter  battery  must  remain  clean 

and  dry.  Oxidation  or  the  deposit  of  impurities  on  the 

battery and on its terminals may lead to short circuits, 

voltage  drops  and  premature  discharging,  notably  in 

wet weather. 
The battery terminals and the cables must be cleaned 

with  a  brass  brush  in  order  to  remove  any  oxidation. 

Tighten the cable terminals and lubricate them with ap-

propriate grease.
If  the  battery  is  replaced,  use  a  battery  with  similar 

specifications to the previous one.
If  starting  with  an  emergency  battery  and  connection 

cables, proceed as follows:

- Connect the emergency battery to the main battery

by connecting the + to the + and the – to the -. When 

the engine has started, remove the connection cables.
You should disconnect the 2 battery cables when:

- You use a battery charger
- Before carrying out any work on the electrical equip-

ment

- Before carrying out any welding work

2

1

Entretien

Engine electrical system

Generating set storage procedure

A set of operations will protect the engine during long 

periods of non-use. For prolonged storage before or af-

ter the commissioning, a specific set of measures must 

be performed. Contact your Nanni Diesel dealer.
Refer to the Silverwake warranty booklet for more infor-

mations about these operations.

We recommend that you have all these operations 

carried out by a Nanni Diesel authorised workshop.

If the engine is likely to be subjected to freezing tem-

peratures, the coolant must be drained.

Restarting the generating set

After operations of winterization, a list of opration lust be 

performed before restarting the generating set. Contact 

your Nanni Diesel dealer.

Summary of Contents for QLS 10T

Page 1: ...MARINE GENERATING SET INSTRUCTION MANUAL MU_GE_970315535_ENG QMS 32T QMS 39T QLS 32T QLS 39T QLS 47T...

Page 2: ......

Page 3: ...l system 16 Bleeding the fuel circuit 16 Replacing the fuel filter 16 Replacing the fuel prefilter 16 Draining the water from the fuel prefilter 16 Lubrication system 17 Checking the oil level 17 Drai...

Page 4: ...should be carried out by Nanni Diesel authorised per sonnel or by a professional If you have to work on the generating set carefully follow the safety instructions set down in this manual Certain info...

Page 5: ...ant and oil circuit caps when the generating set is operational and or hot Never start or run the generating set when the oil fill cap is not screwed on as hot oil could spray out If you come into con...

Page 6: ...nal I Rotating parts Rotating parts can be extremely dangerous and cause serious injury and even death Do not work on the generating set when it is operational If work on the engine when running is ab...

Page 7: ...use special filters Avoid using fuel mixed with water or other substances as you may damage the engine The engine performance is influenced by the fuel tem perature the temperature and relative humidi...

Page 8: ...ng I Caution Your generating set must be installed by a shipyard or authorised representative following the on board assembly instructions The electrical connections must also be carried out by qualif...

Page 9: ...gauge 14 Fuel filter 15 Fuel pump 16 Supports 17 Generator 18 Generator identification plate 19 Engine identification plate 20 Generating set hoisting eyes Principal parts of the generating set QLS32T...

Page 10: ...orifice 11 Oil filter 12 Oil drain pump option 13 Oil gauge 14 Fuel filter 15 Fuel pump 16 Supports 17 Generator 18 Generator identification plate 19 Engine identification plate 20 Generating set hoi...

Page 11: ...3 Battery charge This indicator illuminates when the set is switched on If it lights when the generating set is running this indicates an engine alternator charging fault 4 Oil pressure This indicator...

Page 12: ...INJECTION SYSTEM QMS32T QLS32T QMS39T QLS39T QLS47T Combustion principle Indirect Direct Intake Atmosph rique Natural Turbo Injectors Type Bosch mini Injection pressure bar 140 250 Fuel type Gazole NF...

Page 13: ...circuit compo nent has been replaced Starting the generating set I Caution On a soundproof generating set the lo cal remote selector must be in remote position to start the generating set using the in...

Page 14: ...set except in emergencies and contact your Nanni Diesel authorised dealer Stopping the generating set Before stopping the generating set cut the power of the electrical appliances connected to the cr...

Page 15: ...50 of pure antifreeze Use clean and distilled water for the mix Water that is too hard will produce limescale build up and will reduce the cooling system s effectiveness The cooling system allow the...

Page 16: ...e generating set as they may increase the risk of fire in the engine compartment Check the operation of the different lamps and indica tors situated on the instrument panel Take care not to get the ge...

Page 17: ...receptacle under the filter and then remove the used filter C cartridge Apply a thin layer of fuel over the seal surface of the new filter cartridge before fitting it Tighten it by hand until the fil...

Page 18: ...urn Start the engine and let it warm up for approximately 5 minutes so that oil suction is easier Stop the engine Use a pail to collect the extracted oil and pump until the oil has been completely ext...

Page 19: ...t must be drained in or der to remove the various deposits that can build up in the circuit Carry out this operation with the engine stopped and cold Place a receptacle under the drain cap then un tig...

Page 20: ...d with fresh wa ter Ensure the receptacle you use is large enough as the seawater pump must never be run without water Check that no one is in the vicinity of the engine and then start it Let the engi...

Page 21: ...p propriate grease If the battery is replaced use a battery with similar specifications to the previous one If starting with an emergency battery and connection cables proceed as follows Connect the e...

Page 22: ...tec tion of the generating set and consequently the gener ating set itself The installer should ensure that all the necessary precautions are taken to guarantee the cor rosion protection of the genera...

Page 23: ...ce the fuse or replace the circuit breaker Electrical circuit breaker is not working Electrical connections are faulty Check the electrical connections and wires especially the battery cables Clean an...

Page 24: ...ck or faulty Re tighten or replace the belt Seawater pump rotor is faulty Replace the rotor Insufficient coolant Fill with coolant and check that the cooling system is leak tight Thermostat is malfunc...

Page 25: ......

Page 26: ...Nanni Industries S A S 11 Avenue Mariotte 33260 La Teste France Tel 33 0 5 56 22 30 60 Fax 33 0 5 56 22 30 79 www nannidiesel com...

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