WhisperPower M-SC3.5 User manual

USERS MANUAL
M-SC3.5
- 3000 RPM -
Marine diesel generating set 230V / 50Hz
MasterBus controlled
WHISPER POWER BV
Kelvinlaan 82
9207 JB Drachten
Netherlands
Tel.: [phone]
Fax.: [phone]
www.whisperpower.eu V1. May 2010
Art.nr. 40261131

TABLE OF CONTENTS
2May 2010 / M-SC3.5 / EN
TABLE OF CONTENTS:
1INTRODUCTION.............................................................................................................................................................. 4
1.1 General .............................................................................................................................................................. 4
1.2 Service and maintenance................................................................................................................................... 4
1.3 Guarantee .......................................................................................................................................................... 4
1.4 Liability ............................................................................................................................................................... 5
1.5 Identification ....................................................................................................................................................... 5
1.5.1 Identification plate ..................................................................... Fout! Bladwijzer niet gedefinieerd.
2INFORMATION................................................................................................................................................................ 7
2.1 Safety ................................................................................................................................................................. 7
2.1.1 General.............................................................................................................................................. 7
2.1.2 Electrical safety ................................................................................................................................. 7
2.1.3 Earth insulation failures ..................................................................................................................... 7
2.1.4 Installation ......................................................................................................................................... 7
2.1.5 Operation........................................................................................................................................... 7
2.1.6 Fire and explosion ............................................................................................................................. 8
2.1.7 Chemicals.......................................................................................................................................... 8
2.2 Transport, lifting and storage.............................................................................................................................. 8
2.3 The M-SC3.5 ...................................................................................................................................................... 8
2.3.1 Features ............................................................................................................................................ 8
2.3.2 Remote control panel ........................................................................................................................ 9
2.3.3 Documentation .................................................................................................................................. 9
2.3.4 Accessories included in the standard ................................................................................................ 9
2.4 Components ..................................................................................................................................................... 10
2.4.1 Main components to identify............................................................................................................ 10
2.4.2 Local control panel .......................................................................................................................... 11
2.4.3 MasterView Easy remote control panel ........................................................................................... 11
2.5 Technical information ....................................................................................................................................... 11
2.5.1 AC alternator ................................................................................................................................... 11
2.5.2 Engine ............................................................................................................................................. 11
2.5.3 Control system ................................................................................................................................ 11
2.5.4 Battery charger................................................................................................................................ 12
2.5.5 Alarms and shut down ..................................................................................................................... 12
2.5.6 Fuel specification............................................................................................................................. 12
2.5.7 Oil information ................................................................................................................................. 12
2.5.8 Technical data ................................................................................................................................. 13
2.5.9 DC wiring diagrams ......................................................................................................................... 14
2.5.10 Wiring names and colours ............................................................................................................... 16
2.5.11 AC wiring diagram 230 V AC / 50 Hz............................................................................................... 17
3OPERATION.................................................................................................................................................................. 18
3.1 General ............................................................................................................................................................ 18
3.2 Operating instructions ...................................................................................................................................... 18
3.2.1 Summarised operating instructions (daily use)................................................................................ 18
3.2.2 Extended operating instructions ...................................................................................................... 18
4MAINTENANCE............................................................................................................................................................. 21
4.1 Alternator.......................................................................................................................................................... 21
4.2 Engine .............................................................................................................................................................. 21
4.2.1 Preliminary instructions ................................................................................................................... 21

TABLE OF CONTENTS
EN / M-SC3.5 / May 2010 3
4.2.2 Bleeding fuel lines ........................................................................................................................... 21
4.2.3 Valve clearance............................................................................................................................... 21
4.2.4 Replacing fuel filter .......................................................................................................................... 21
4.2.5 Cleaning oil strainer......................................................................................................................... 22
4.3 Regular maintenance ....................................................................................................................................... 22
4.3.1 Maintenance schedule..................................................................................................................... 23
4.3.2 Putting out of service ....................................................................................................................... 23
5TROUBLE SHOOTING.................................................................................................................................................. 24
5.1 Alternator/electrical faults ................................................................................................................................. 24
5.1.1 General............................................................................................................................................ 24
5.1.2 Failure or warning messages displayed on the remote control panel .............................................. 24
5.1.3 Other electrical problems................................................................................................................. 26
5.2 Engine faults..................................................................................................................................................... 28
5.2.1 General............................................................................................................................................ 28
5.2.2 Failure or warning messages displayed on the remote control panel .............................................. 28
5.2.3 Other engine related problems ........................................................................................................ 29
5.2.4 Warnings ......................................................................................................................................... 32
5.2.5 Service address............................................................................................................................... 32
5.3 Special procedures alternator........................................................................................................................... 33
5.3.1 Residual voltage check / excitation.................................................................................................. 33
5.3.2 Testing rotary rectifier diodes .......................................................................................................... 33
5.3.3 Winding resistant values.................................................................................................................. 33
5.3.4 Meggering ....................................................................................................................................... 33
5.4 Special procedures engine ............................................................................................................................... 34
5.4.1 Setting the RPM .............................................................................................................................. 34
5.4.2 Tightening torques........................................................................................................................... 34
5.4.3 Measuring exhaust backpressure.................................................................................................... 34
5.4.4 Disassembling instructions .............................................................................................................. 35
6SPARE PARTS LIST..................................................................................................................................................... 36
MAINTENANCE LOG ............................................................................................................................................................... 38

INTRODUCTION
4May 2010 / M-SC3.5 / EN
1 INTRODUCTION
1.1 GENERAL
The M-SC3.5 Marine Diesel Generating set is
manufactured and marketed by Whisper Power.
It is important to read this manual before installing and
operating the generating set. Both safety and durability
rely very much on the correct identification, installation and
a good understanding of ratings, features, design,
maintenance and operation procedures.
The information, specifications, illustrations and
statements contained within this publication are given with
our best intentions and are believed to be correct at
thetime of going to press.
All of the specifications, provisions and instructions
contained in this manual apply solely to standard versions
of the Whisper Power M-SC3.5 generating set.
This manual is valid for the following models:
Part
number Version Description
41200500 A M-SC3.5 / 230V 3000rpm wet
exhaust, MasterBus controlled
41200506 A M-SC3.5 / 230V 3000rpm wet
exhaust, MasterBus controlled -
ungrounded
See 1.5 for identification of the generator set. For other
models see other manuals available on our website:
www.whisperpower.eu.
Our policy is one of continued development and we
reserve the right to amend any technical information with-
out prior notice.
Whilst every effort is made to ensure the accuracy of the
particulars contained within this publication neither the
manufacturer, distributor, or dealer in any circumstances
shall be held liable for any inaccuracy or the
consequences thereof.
WARNING
A warning symbol draws attention to special
warnings, instructions or procedures which, if
not strictly observed, may result in damage or
destruction of equipment, severe personal
injury or loss of life.
DANGER
This danger symbol refers to electric danger
and draws attention to special warnings,
instructions or procedures which, if not strictly
observed, may result in electrical shock which
will result in severe personal injury or loss of
life.
1.2 SERVICE AND MAINTENANCE
Regular service and maintenance should be carried out
according to the directions in this manual. For service and
maintenance one can appeal to the manufacturer or the
dealers.
1.3 GUARANTEE
Whisper Power guarantees that this generating set has
been built according to good workmanship, according to
the specifications in this manual and according to
European Community safety regulations.
During production and prior to delivery, all of our
generating sets are tested and inspected. The functioning
of this generating set is subject to guarantee. The period
and conditions of this guarantee are laid down in the
general conditions of delivery as registered with the
Chamber of Commerce and Industries for the North of the
Netherlands number 01120025 and and are available on
request. Some aspects of our warranty scheme are given
here in more detail: The guarantee period is two years,
limited to 1000 running hours. Guarantee does not cover
failures that are caused by misuse, neglect or a faulty
installation.
Example 1. Faulty installation:
Seawater entering the engine is the most common cause
of damage to combustion engines in boats. (Both to
propulsion and generator engines.) The entry of water
must be avoided under all conditions. Be aware that the
conditions in blue water sailing can be extreme. Refer to
the installation manual for instructions but remember these
are for guidance only as many factors influence the
installation of a generator. The ultimate responsibility will
always be with the owner to ensure a safe and compliant
installation. If in doubt ask!
DAMAGE CAUSED BY THE INGRESS OF
WATER IS NEVER COVERED BY
GUARANTEE
Example 2: Misuse:
Long term running with no load or too little load can cause
the exhaust to get choked with soot or carbon. Cleaning
the exhaust is not covered by guarantee.
Example 3: Neglect
Sometimes the seal of the raw water pump starts leaking.
Mostly this begins with a little drip and slowly gets worse.
Regular visual inspection of the generator is necessary to
prevent damage to occur from a leaking water pump.
When one find serious damage after weeks of neglect
guarantee claims will not be honoured.

INTRODUCTION
EN / M-SC3.5 / May 2010 5
Example 4: Neglect
Whisper generators have an option for an auto start/stop
mode or interval mode.
Whisper Power cannot be held responsible for damage
caused by the unattended running generator.
Guarantee means that faulty parts are repaired or
replaced free of charge. If necessary the whole generator
unit will be exchanged. Labour necessary to complete
repairs on board a vessel executed by an authorized
service engineer is covered, but is limited to a reasonable
number of hours and reasonable rates in relation to the
actual repair work that has to be done.
Travel expenses and travel hours are not covered. Also
not covered is the labour required to take a generator out
of a boat or for reinstallation. There is no cover for labour
needed to get access to the generator, for example to
remove equipment or bulkheads etc.
Goods to be delivered under guarantee will be invoiced.
Only after the faulty goods are returned will the invoice be
credited. Payment in advance may be required or
guaranteed by credit card. If after the faulty goods are
returned, it is indicated that the failure was not covered by
warranty a credit will not be issued. For example if a
Printed Circuit Board is returned with clear damage
caused by seawater, warranty will be refused. Freight
costs to deliver spares by normal mail or carriers is
covered under warranty. Special services like express
mail, overnight delivery etc. are not covered. Taxes and
duties are not covered. For shipments to remote off
shoreareas any additional costs incurred over normal
carriage will be invoiced to the customer.
The cost for returning faulty goods is not covered under
warranty. Additional agreements could be part of the
contract of delivery.
If any problem arises which could be subject of guarantee,
procedures should be followed as described in the
guarantee certificate, unauthorised repairs could lead to
further damage and violate the guarantee conditions.
Should work take place, which is not in
accordance with the guidelines, instructions
and specifications contained in this user’s
manual and the supplementary installation
manual, then damage may occur and the
generating set may not fulfil its specifications.
In all these cases the guarantee may become
invalid. Use original spareparts only!
1.4 LIABILITY
Whisper Power does not accept responsibility for damage,
injuries or casualties which are the result of operation of
the generating set in specific conditions which brings
dangers which could not be foreseen, or could be avoided
by additional measures. Whisper Power does not accept
liability for damage due to use of the generator, possible
errors in the manuals and the results thereof.
Whisper Power cannot be held responsible for
damage caused by unattended running of the
generator due to the use of event based
commands.
1.5 IDENTIFICATION
Before using this generating set it is very important to
identify the set correctly. To communicate for service or
ordering parts it is also essential to correctly identify the
generating set. Also for the daily operation of the
generating set it is necessary that the operator knows the
correct specifications.
1.5.1 Identification plate
All required identification data are on the identification
plate.
Fig. 1laat

INTRODUCTION
6May 2010 / M-SC3.5 / EN
1 The identity of the generating set is given by the
SERIAL NUMBER. When this number is available the
manufacturer can trace the specifications of the
generating set. On the identification plate are also
some basic features of the set.
2 POWER
The identification plate gives the nominal maximum
continues load in kVA (= kW) calculated with power
factor one. When calculating a load one should
always take into account the power factor or cos phi
of this load. The power should never exceed 3 kW.
Power is rated at an ambient temperature of 40°C and
a seawater temperature of 25ºC. For higher
temperatures the generating set has to be derated.
3 VOLTAGE shows the nominal voltage.
This voltage should be within the specified tolerance
at the nominal frequency.
4 FREQUENCY is shown in Hz and is determined by
the speed of the engine (RPM). 50 Hz correlates with
3000 rpm, 60 Hz correlates with 3600 rpm.
5 CURRENT shows the maximum current that is
acceptable at the specified frequency, voltage and
power factor.
6 WEIGHT shows the net dry weight (approximately) in
kg. This is without fuel, oil, packing and external
installation equipment.
7 The CE symbol shows that the generating set is build
according to European Community safety regulations.
This includes the regulations regarding the safety of
pleasure craft, machinery, electric safety and electric
magnetic compatibility (EMC) and other relevant
directives.
Safety also relies on the installation, application and
circumstances. See also the remarks in this manual under
SAFETY.
Before changing a factory setting you are advised to
consult the manufacturer. When the generating set you
have to identify is not new you have to take into account
the possibility that former users may have changed the
settings. Check the settings (voltage, frequency, rpm)
when there is any doubt.

INFORMATION
EN / M-SC3.5 / May 2010 7
2 INFORMATION
2.1 SAFETY
2.1.1 General
When correctly installed and used in normal
circumstances this generating set fulfils EC safety
regulations. This generating set could be part of an
installation or could be used in a way that additional
regulations of the EC or other authorities have to be taken
into account.
Circumstances could make it also necessary
to take additional measures. Be aware of wet
conditions and hazardous environments
caused by explosive gases etc.
2.1.2 Electrical safety
The voltage of 230 Volt generated by this
generating set is dangerous and if instructions
and procedures are not strictly observed may
result in electrical shock which will result in
severe personal injury or loss of life.
•Check all wiring at least once a year. Defects,
such as loose connections, burned cables etc.
must be repaired immediately.
•Do not work on the electrical system if it is still
connected to a current source. Only allow
changes in your electrical system to be carried
out by qualified electricians.
•Connection and protection must be done in
accordance with local standards.
•Using event based commands the generator can
start unexpectedly. When working on the
electrical system, the 30 Amp fuse must be
removed from the Digital Diesel Control panel
and the battery plus cable must be removed from
the battery.
Warning signs indicate parts which could be
live.
2.1.3 Earth insulation failures
According to local regulations and depending on the
application it could be necessary to take measures for
protection against earth insulation failures.
In the standard delivery “neutral” and “ground” are not
connected. To make a connection between “neutral” and
“ground” could be necessary as part of a specific
insulation failure protection system.
Small pleasure craft in Europe is submitted to The
Recreational Craft Directive 94/25/EC. The guidelines of
this directive refer to (ISO 13297).
When the installation complies with this standard the
“neutral” and “ground” should be connected on the
generating set. (Refer to the electrical diagram, page 15).
In all situations the transfer switches between
shore, inverter and generator should switch
both neutral and L1. Of course this is the case
when using a Masterswitch.
Be aware that insulation protection systems can be
different for different applications and even within the ship
there could be different standards for different spaces. We
did refer to the Recreational Craft Directive that applies to
pleasure craft up to 24 m of length. Sometimes one has to
comply with other standards such as the rules of
certification societies like Lloyds Register of Shipping or
Veritas, regulations for the protection of personal, building
legislation, etc. It is of the greatest importance to have
expert advice on this issue.
2.1.4 Installation
Whisper generating sets are not self contained and have
to be properly installed in enclosed areas such as a
machine room.
Installation includes measures to be taken to
outlet exhaust fumes which contain carbon
monoxide and are extremely dangerous.
Carbon monoxide (CO) is an invisible
odourless gas. Inhalation produces headache,
nausea or death. Installation includes
measures for proper ventilation, safe electric
connections, safe installation of the starting
battery, proper fitting of the cooling system
and fuel pipes etc. Refer to the installation
manual.
2.1.5 Operation
The M-SC3.5 generating set does not have any external
moving parts like fans and V-belts and therefore is very
safe.
Nevertheless take note of the signs on the
generating set which show symbols in a
triangle indicating danger.

INFORMATION
8May 2010 / M-SC3.5 / EN
When service has to be carried out while the
engine is running, be aware of moving parts
like V-belts.
•The generating set should be operated by
authorised personnel only.
•Be aware of hot parts and especially parts of the
exhaust system and the cooling system.
•If the generating set is unsafe, fit danger notices
and disconnect the battery positive (+) lead so
that it cannot be started until the condition is
corrected.
•Do not attempt to operate the generating set with
a known unsafe condition. Disconnect the battery
negative (-) lead prior to attempting any repairs or
cleaning inside the enclosure.
•Always consult the manual before carrying out
maintenance.
•Do not change the settings without consulting the
manufacturer. Keep a record of setting changes
in this manual.
2.1.6 Fire and explosion
Fuels can be flammable. Proper handling
limits the risk of fire and explosion.
•Avoid refilling the fuel tank while the engine is
running. When oil or fuel is leaking do not use the
generating set.
•Do not run the engine close to explosives or
gasses.
•Hydrogen gas generated by charging batteries is
explosive. Ensure for proper ventilation. Do not
smoke or allow sparks, flames, or other sources
of ignition around batteries.
•Keep a fire extinguisher on hand.
•Poor electrical connections or using wiring which
is not suited for the rated currents can cause
overheating and possibly fire.
2.1.7 Chemicals
•Fuels, oils, coolants, and battery electrolyte can
be hazardous to personnel if not treated properly.
Do not swallow or have skin contact with these
liquids. Do not wear clothing that has been
contaminated by fuel or lubricating oil.
•Gaskets may be manufactured from asbestos.
Particles of this material should not be inhaled as
this may result in fatal diseases.
•On no account allow any unprotected skin to
come into contact with the injector spray as the
fuel may enter the blood stream with fatal results.
•Engines may be fitted with seals or O-rings
manufactured from "viton" or similar material.
When exposed to abnormal high temperatures in
excess of 400°C an extremely corrosive acid is
produced which cannot be removed from the
skin. If signs of decomposition are evident, or if in
doubt, always wear disposable heavy duty
gloves.
2.2 TRANSPORT, LIFTING AND STORAGE
When lifting the generating set avoid any risk
of personal injuries, do not stand un-der the
generating set.
•Use soft slings to avoid damage.
•Included in the delivery is a lifting eye, only to be
used to take the generator out of the capsule. Do
not use to lift the set including the capsule and
certainly not including the steel foundation plate!
•After transporting the generating set check for
damage before installation.
•Long term storage can have detrimental effects
on engine and alternator. The engine should be
put through an engine preservation procedure.
(Refer to the maintenance chapter)
•The alternator windings tend to condense. To
minimise condensation, store the generating set
in a dry and warm storage area.
•After removing the generating set from long term
storage perform an insulation check. (Refer to the
alternator maintenance paragraph for
procedures)
•While the battery is stored it should be recharged
every 12 weeks.
2.3 THE M-SC3.5
2.3.1 Features
This generating set includes a diesel engine which is
connected by close coupling to an alternator in a sound
attenuated capsule. The set is mounted on a steel base
frame and mounted securely on anti vibration mounting
pads to the capsule base. All cables and hoses are guided
through the capsule’s left side. The set is not self
contained and is only operable after proper installation
using additional accessories and installation materials.
Installation accessories are listed in the installation manual
and are available through the supplier of the generating
set.
The generating set is compatible with MasterBus: a fully
decentralized data network for communication between
the different Whisper Power system devices such as the
inverter, battery charger, generator, batteries and many

INFORMATION
EN / M-SC3.5 / May 2010 9
more. Refer to the separate operating manual of the
MasterView Easy for details.
2.3.2 Remote control panel
The generating set as well as the rest of the electrical
system can be monitored and controlled by any MasterBus
compatible remote control panel. The MasterView Easy is
a MasterBus compatible monitoring and control panel that
comes as standard with the generating set. A MasterBus
communication cable (15 mtr) as well as two terminating
devices is included in the delivery.
2.3.3 Documentation
Included in the delivery is:
•This users manual (number: 40261131)
•An installation manual (number: 40261141)
•An operating manual “MasterView Easy for
Whisper generators” (number: 40200271).
Not included in the standard delivery but available as
options are:
•Parts manual; number: 40200180
•Workshop manual; number: 40200170
However in this manual there is a list of important parts for
maintenance and spare parts as well as a chapter on
maintenance and problem solving.
2.3.4 Accessories included in the standard
delivery
•Fuel filter;
•Fuel lift pump;
•Lifting eye;
•Special hose connector for measuring exhaust
backpressure (Refer to paragraph 5.4.3).

INFORMATION
10 May 2010 / M-SC3.5 / EN
2.4 COMPONENTS
2.4.1 Main components to identify
1 Air inlet (bottom side);
2 Starter motor;
3 Battery connection (positive);
4 Battery connection (negative);
5 AC 230 V wiring;
6 MasterBus communication ports;
7 Fuel filter;
8 Fuel pipe inlet;
9 Fuel pipe return;
10 Bypass hose air vent;
11 Cooling water in;
12 Exhaust manifold (water cooled);
13 Thermo-switch exhaust;
14 Glow plug;
15 Injector;
16 Valve cover;
17 Decompression handle;
18 Oil filler cap;
19 Solenoid fuel valve;
20 Electric fuel lift pump;
21 Cooling water pump;
22 Oil pressure pump;
23 Fuel pressure pump;
24 Oil pressure switch;
25 Oil sump pump;
26 Exhaust connection;
27 Fuel return;
28 Oil filler cap/ oil level indicator;
29 DDC Panel + local control panel
30 Top cover plate connection box;
31 Fuse 1;
32 Fuse 2;
33 Remote control cable;
34 Stop solenoid;
35 Oil strainer cover;
36 Start / Stop button;
37 Status LED’s;
38 RPM set screw;
39 Oil temp switch;
40 Plug screw;
41 Heat exchanger.
Figure 2: Overview M-SC3.5

INFORMATION
EN / M-SC3.5 / May 2010 11
2.4.2 Local control panel
Figure 3: Local control panel.
1 Fuse 10A; 5 Contact/fuel pump LED
2 Fuse 30A; 6 Autostart LED
3 Start LED; 7 Failure LED
4 Glow LED; 8 Start/stop button
5 Pull to stop LED;
2.4.3 MasterView Easy remote control panel
1 Touch screen Display;
2 Display on/off.
2.5 TECHNICAL INFORMATION
2.5.1 AC alternator
The single phase alternator is directly coupled, one
bearing, brushless, rotating field design, two poles (3000
RPM) and self regulating.
Residual magnetism causes a small voltage over the
stator windings and allows a current to flow in the
windings, which is magnified because of the feed back
effect between rotor and stator. The field windings in the
rotor are short-circuited over a diode to rectify the current.
A capacitor over an additional winding in the stator which
is at an angle with the power-winding keeps the voltage
stable within 5 % at the specified rpm and provides voltage
fall off with speed, preventing over-excitation at low engine
speeds and softening the effect of load switching to relieve
the burden on the engine.
Further technical data on the design of the alternator can
be found in drawings and diagrams in this manual.
2.5.2 Engine
The M-SC3.5 generating set is based on the Kubota OC60
1 cylinder diesel engine. The engine is indirectly injected.
The engine is oil cooled and the oil is cooled by a heat
exchanger and raw water. The heat exchanger and all
other parts which are in direct contact with the raw (sea)
water are made of seawater resistant material like naval
brass and gunmetal.
The engine has been specially adapted for the Whisper
Power application and is very different from the standard
engine supplied for industrial applications!
2.5.3 Control system
The standard electrical engine control system is 12 Volt
negative earth, non earth return (ungrounded) is available
as optional. Check your identification data to determine
which system is applied.
The generating set can be operated by start/stop button
on the local control panel on the alternator (see figure 3)
or by a MasterBus compatible remote control panel such
as the included MasterView Easy.
By giving a START command, the control system is
activated and will start the engine automatically. Giving a
STOP command will stop the engine and the electrical
system will be deactivated. Stopping of the engine is
executed by the ‘pull’ solenoid, at the same time the fuel
valve solenoid will shut off.
The generating set is compatible with MasterBus, a fully
decentralized data network for communication between
the different Whisper Power system devices. The
generating set as well as the rest of the electrical system
can be monitored and controlled by any MasterBus
compatible remote control panel. The MasterView Easy is
a MasterBus compatible monitoring and control panel that
Figure 4: MasterView Easy remote control panel.

INFORMATION
12 May 2010 / M-SC3.5 / EN
is standard included in the delivery of the generating set.
Refer to the separate operating manual of the MasterView
Easy for operation instructions.
2.5.4 Battery charger
There is an extra winding in the alternator generating 4
Amp 12 V. This current is rectified to charge the battery.
Both current and voltage are regulated.
2.5.5 Alarms and shut down
In the event of malfunctioning this will be indicated by the
failure LED (see figure 3) details will be shown on the
display of the MasterView Easy and the engine will be shut
down. There are several functions guarded such as: oil
pressure, oil temperature, exhaust temperature and output
current.
All alarm switches are closed when no malfunction occur.
A contact is cut in the event of an alarm. This means that
the generating set will not work when the alarm switches
are broken or there is a loose wire. The system therefore
is intrinsically safe.
2.5.6 Fuel specification
The engine must only be used with diesel fuel which
conforms to the standards for use in modern diesel
engines. Fuel free from water and contaminants is of the
utmost importance.
2.5.7 Oil information
1 Specification:
The oil must be suitable for oil changes as specified in
the maintenance chapter. The Kubota engine must be
run on heavy duty lubricating oil meeting the
requirements of API class CD, CF or CF_4.
It is very important to use the correct oil
specification. Very often local oil suppliers
recommend a higher class, because they
assume that a higher class is allowed. This is
not the case. One should not follow these
recommendations.
Using the wrong specification will cause high
oil consumption.
2 Oil viscosity:
We recommend a multigrade oil 15W40.
3 Oil capacity:
Excluding the oil cooler the content of the crankcase
is 1,3 l. including the oil cooler it is 1,5 l.
Do not overfill with lubricating oil as this may have a
detrimental effect on engine performance.
4 Oil pressure:
•Minimum at idle 49 Kpa (0,5 kgf/cm2 - 7psi).
•Normal at 3000 rpm between 147 and 490 Kpa
(1,5 up to 5 kgf/cm2 - 21 up to 71 psi).
•Minimum at 3000 rpm 98 Kpa (1,0 kgf/cm 2 – 14
psi).

INFORMATION
EN / M-SC3.5 / May 2010 13
2.5.8 Technical data
GENERAL
Model M-SC3.5
RPM 3000
Alternator water cooled, synchronous
Engine Kubota diesel, model OC60 (Japan)
Number of cylinders 1
Displacement 276 cm3
Bore X stroke 72x68 mm
Combustion air consumption 0.38 m3/min. at nominal RPM
Continuous power engine 3 kW nett
Cooling system Indirect cooling by raw water
Cooling water consumption 10-12 l/min.
Cooling water pump PTO driven Whisper Power self priming impeller pump, type K
Fuel lift pump engine electric pump (12 V DC), additional pump available upon request
Starting system electrical 12 V
Starting battery (optional) 55-90 Ah
Fuel consumption 0.7-1.4 litre/hour, load dependent
Control Digital Diesel Control, controlled by MasterBus
ELECTRICAL SPECIFICATIONS
Output voltage 230V 50 Hz alternating current (AC) single phase
Output rating 3KVA = 3 kW cos phi = 1
Voltage tolerance ± 5%
Frequency tolerance ± 5%
Alternator brushless, two pole, synchronous
MECHANICAL SPECIFICATIONS
Supply includes generating set, built into tugged GRP sound shield with steel base frame, mounted
on rubber anti vibration mounts.
Dimensions WxDxH 505x400x500mm
Colour top white, bottom green
Weight 104 kg. including sound shield
Max. installation angle 25 degrees
Standard supplies MasterView Easy remote control panel, MasterBus connection cable (15m)
Optional (vehicle) version, non earth return, spare part kits

INFORMATION
14 May 2010 / M-SC3.5 / EN
2.5.9 DC wiring diagrams
Fig. 5: DC wiring M-SC3.5 grounded (part. Nr. 41200500)

INFORMATION
EN / M-SC3.5 / May 2010 15
Fig. 6: DC wiring M-SC3.5 ungrounded (part. Nr. 41200506)

INFORMATION
16 May 2010 / M-SC3.5 / EN
2.5.10 Wiring names and colours
Wire name Wire number Colour Cross section
Battery + 1 white 2,5 mm2
Battery - 2 white 2,5 mm2
Glow + 3 white 2,5 mm2
Start solenoid + 4 white 2,5 mm2
Stop solenoid - 5* white 2,5 mm2
Stop solenoid + 6 white 1,5 mm2
Fuel valve + 7 white 1,5 mm2
Fuel valve - 8 white 1,5 mm2
Fuel pump + 9 brown 1,5 mm2
Fuel pump - 10 black 1,5 mm2
Charger a 11 white 1 mm2
Charger b 12 white 1 mm2
Safety switch + 13 white 1 mm2
Safety switch - 14 white 1 mm2
Battery + 15* white 2,5 mm2
Battery + 16* white 2,5 mm2
Start relay + 17* white 1 mm2
Glow relay + 18* white 1 mm2
Battery - 19* white 1 mm2
Oil pressure + 22 white 1 mm2
Oil pressure - 23* white 1 mm2
Exhaust temp. + 24 white 1 mm2
Exhaust temp. - 25 white 1 mm2
Engine temp. + 26 white 1 mm2
Engine temp. - 27 white 1 mm2
Iac1-L 30 white 1 mm2
Iac1-N 31 white 1 mm2
Uac1-L 40 white 1 mm2
Uac1-N 41 white 1 mm2
Ground relay + 49* white 1 mm2
Battery + red 16 mm2
Battery - black 16 mm2
Earth wire green/yellow 6 mm2
* Ungrounded versions only (part nr. 41200506)

INFORMATION
EN / M-SC3.5 / May 2010 17
2.5.11 AC wiring diagram 230 V AC / 50 Hz
Figure 7: AC wiring diagram
STATOR
ROTOR
L1
N
PE
EARTH AND NEUTRAL CONNECTED
230V 50Hz
PE
N
L1
EARTH AND NEUTRAL
NOT CONNECTED
BLACK
TRANSFORMER
YELLOW/GREEN
CAPACITOR
MAIN WINDING
MAIN WINDING
(4)
(3)
(4)
CURRENT
CHARGER
WINDING
EXCITATION
BATTERY
(3)
(2)
(1)
RED
(10)
(10)
BLUE
BROWN
ALT
YELLOW/GREEN
ALT
REGULATOR
WCH
J1
J2
(11) (11)
DCC/ct-1
DCC/AC-1
BROWN (33) BLUE (33)
BLUE (33) BROWN (33)
DCC/AC-1
YELLOW/GREEN
BLUE
YELLOW/GREEN
BROWN
BLACK
DCC/ct-1
RED
(11) (11)
TRANSFORMER
CURRENT
EARTH AND NEUTRAL CONNECTED 230 V 50 Hz
EARTH AND NEUTRAL
NOT CONNECTED
230V 50 Hz

OPERATION
18 May 2010 / M-SC3.5 / EN
3 OPERATION
3.1 GENERAL
The generating set is operational after full installation and
filling up with: fuel, engine lubricating oil and cooling liquid,
filling the starter battery with acid, connecting the battery
to earth and connecting the MasterView Easy remote
panel.
1 Filling cap;
2 Minimum oil level;
3 Maximum oil level.
Figure 9
3.2 OPERATING INSTRUCTIONS
3.2.1 Summarised operating instructions (daily
use)
Routine "pre-start" checks:
1 Check oil level (refer to figure 9).
2 Engine cooling system (all valves open).
3 Power source selector switch (off/shore
power/generator power). Switch power source switch
to "OFF", or switch off all consumers in the usual way.
If a Masterswitch is installed, this operates
automatically.
4 Switch on battery switch (when installed).
5 Fuel valve: open.
Starting:
To initiate the full automatic starting procedure, push
the Start / Stop button on the Local control panel or
give a start command by means of the MasterView
Easy. You can monitor the procedure on the display
of the MasterView Easy.
In operation checks:
1 Check for abnormal noise or vibration;
2 Check the voltage;
3 Check sea water flow at exhaust outlet;
4 Power source selector switch (off/shore
power/generator power). Switch to power source
Generator. If a Masterswitch is installed, this operates
automatically;
5 Before loading the generating set up to maximum,
have it run warm. Continuous load should be
restricted to 70 % of maximum load.
Stopping generator:
1 Switch off all electrical devices (consumers). If the
generating set has been running under full load for a
longer period, do not shut it down abruptly. Reduce
the electrical load to about 30% of the rated load (i.e.
30% of 3 kW is approx. 1000W) and let it run for
approx. 5 minutes;
2 Push the Start / Stop button on the Local control panel
or give a stop command by means of the MasterView
Easy;
3 Close the inlet sea water cock;
4 Switch to an other 230V power source, if available. If
a Masterswitch is installed, this is done automatically.
3.2.2 Extended operating instructions
Check when starting the first time or after a longer period
of rest:
1 If there is any damage caused by transport or
installation.
2 Check if installation conforms to the installation
instructions.
3 Ensure the generating set is free to turn without
obstruction.
4 Check all hoses and hose connections for leaks.
5 Check all cables and cable end terminal connections.
6 Check the engine and generator mounting bolts.
Routine "pre-start" checks:
1 Check engine oil level.
The generator switches off in the event of insufficient
oil-pressure. Even when the oil level is too low the oil
pressure can be high enough. Do not run the
generator with the oil below the lowest mark in the,
because a smaller volume of oil will become
contaminated considerably quicker than a larger
volume. Therefore we recommend daily oil-checks.
Check oil level prior to starting the engine or at least 5
minutes after the engine has stopped.
2 Check sea water cocks. Do not forget the valve of the
water outlet in case of a water/exhaust gas separator.
3 Check the water strainer.
4 Check for leaks.
5 Regularly check the siphon vent in the cooling water
supply.

OPERATION
EN / M-SC3.5 / May 2010 19
6 If no Masterswitch is used: Switch main Power Source
Selector switch to "OFF" or switch off all devices.
7 Switch on the battery switch.
Starting the generator:
By pushing the Start / Stop button on the Local control
panel or by giving a start command from the MasterView
Easy, the electric system is activated, the fuel lift pump
starts pumping and the starting procedure will begin. (The
system is deactivated by pushing the Start / Stop button
on the Local control panel again or by giving a stop
command from the MasterView Easy).
The M-SC3.5 can even be started with an almost
discharged battery using the cylinder compression release
handle. The engine can then be rotated easily ("turned
over") as the valves are opened i.e. in the decompression
position.
Figure 10: Decompression handle
You can also use the decompression handle to readjust
the valve clearance and to fill the cooling system with anti
freeze for conservation in winter time.
A restart protection prevents starting the engine when it is
already running, which could cause damage.
In the event of starting problems (numerous
attempts are made), close the sea-water inlet
cock while cranking to prevent the outlet
system and engine to fill up with water.
During the starting process, the cooling water pump is
driven with the engine. The cooling water is discharged to
the exhaust outlet, because the engine does not run, the
exhaust pressure is not high enough to expel this water.
Open the valve directly when the engine starts to prevent
damaging the impeller.
Water in the cylinder will cause serious damage to the
engine. For instance; a bent piston rod or a cracked
cylinder head. In fact water in the cylinder is the main
cause for engine damage in pleasure craft.
Checks once the generator is in operation:
1 Check for abnormal noise or vibration;
2 Check the voltage;
3 Check coolant flow.
Always check immediately after starting the generator
if cooling water flows at the exhaust outlet. If this is
not the case, check the cooling water pump. After
having become acquainted with the generator you will
be able to recognise the coolant flowing through the
system by listening for the noise of the water which is
expelled.
Be aware that especially in harbours the
coolant water inlet can easily be blocked by
floating objects.
4 Power source selector switch (off/shore
power/generator power). Switch to power source
generator. If a Masterswitch is installed, this operates
automatically. Before loading the generating set up to
maximum, have it run warm. The first 50 hours of
running the continuous load should be restricted to 70
% of maximum load. Running for long periods at no
load or light load in the first 50 hours can cause
cylinder glazing and high oil consumption.
Engine load during longer operation:
Please ensure that the generating set is not overloaded.
Overloading occurs when the electrical load (demand) is
so high that the generator cannot be turned around
properly by the diesel engine. Overloading causes the
engine to run rough, while using oil and excessive fuel and
producing soot by the exhaust. The engine can even stop.
The generator should therefore only be loaded at the
maximum rated power for short periods (2-3 hours) only!
The high peak current is meant for the ability to start
electrical devices that need a high current for starting
especially electric motors and compressors (from a still
stand state).
In order to prolong the generating set’s life expectance,
the nominal electrical demand on the system should be
about 70% or the rated generating set’s maximum load.
Please note this when switching on your electrical devices!
Nevertheless, the M-SC3.5 is designed so as not to
overheat, even under extreme conditions.
Do not run the generator for very long periods at no load
or at very low load. When this is necessary do load the
generator at least one hour in 10 hours for minimum 70%.
Long term running at too low load will cause the exhaust to
be choked by carbon.
Never remove the battery while the engine is
running or any electrical cable while the
battery is connected in the circuit. Only

OPERATION
20 May 2010 / M-SC3.5 / EN
disconnect the battery with the engine
stopped and all switches in "OFF" position.
Stopping the generating set:
1 Avoid stopping of the generator abruptly after a long
period of operation at high load! Doing so, you avoid
unnecessary thermal load to your generating set!
Act as follows:
Prior to switching off the generating set, decrease the
generator load (i.e. turn off most electrical users) and
let the generator run at low load for approx. 5 minutes
to allow the engine to get properly cool ( the influent
sea water must flow through the system in order to
cool the engine).
If the generator is operating in a hot environment and
you do not act as given above, the excessive heat in
the engine can trip the "high temperature" alarms. In
that case, a restart of the engine is not possible for
some time. It is also recommended to switch off
electrical users prior to stopping the generator
because of the voltage drop that occurs as the engine
comes to a halt. Such voltage drops may cause
damage to electric motors, compressors (in
refrigerators or air conditioners etc.).
2 Push the Start / Stop button on the Local control panel
or give a stop command by means of the MasterView
Easy.
3 Close the inlet sea water cock.
4 Switch to an other 230V power source, if available. If
a Masterwwitch is installed, this is done automatically.