Mase IS 2.7 B User manual

masemase masemase
mase
GENERATORS
IS 2.7 B
Rev.3 A.A. 27/03/2014
cod.43256
Modello / Modelo
N° matricola / Matrìcula
Codice / Còdigo
USE, MAINTENANCE AND INSTALLATION MANUAL GB

IS 2.7 B
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This manual has to be preserved for all through life of the
gen set to which ago reference
Thank you for having chosen a product MASE.
As a leading generator manufacturer, Mase Generators offers a wide range of generators with an output from 1 KVA
portable generators to 1600 KVA units for special applications.
Founded in 1970, the Cesena-based company extends over a area of 16,000 square meters, including a 9,000 sq. mtr.
manufacturingfacility.
Mase Generators began as a company producing 500 Watt, light and compact portable generators. These generators
made the Mase Generators name well known throughout the world. Mase Generators is a leader in high
quality,reliableproducts,andinnovativeresearch performed by Research and Development Department.
The generator you have purchased is the fruit of years of experience in the sector and for the modern conception, the
strong sizing, the materials employees, the continuous updatings, constitutesan effective answer to the operators’
demands of the sector.
This Manual instructions will furnish you useful information and precious suggestions so you can fully exploit
all the possibilities that the generators offers you.
If any part of the manual resulted incomprehensible, please contact us.
In to renew our thanks we cordially greet you.
MASE GENERATORS S.p.A. Via Tortona, 345
47522 Cesena (FC) Italy
Tel.[phone] Fax.[phone]
Technical data, informations, layouts of the texts and graphic preparations: edited by the Technical Office
Mase Generators
THE COMPANY MASE GENERATORS SPA RESERVES ALL RIGHTS TO IMPLEMENT MODIFICATIONS TO THIS PRESENT MANUAL WITHOUT
ADVANCE NOTICE OR NOTIFICATION, WHEN NECESSARY, IN ACCORDANCE WITH ITS POLICY OF CONTINUAL PRODUCT IMPROVEMENT.
THE MASE GENERATORS SPA, RESERVES ALL THE RIGHTS ON THE MANUAL PRESENT. ANY TOTAL OR PARTIAL REPRODUCTION IS
PERMITTEDWITHOUTWRITTENAUTHORIZATION OFTHE MASEGENERATORS SPA.

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CONTENTS
DEFINITIONS USED ................................................. 5
PRELIMINARY PRESCRIPTIONS ............................ 7
1GENERAL INFORMATIONS ............................. 8
1.1 Conform use ..................................................... 8
1.2 Residual risks .................................................... 8
1.3 Safety symbols .................................................. 9
1.4Symbols on the generator group ..................... 10
1.5Safety label informations ................................. 11
1.6Reference documents ..................................... 15
1.7Reference regulations and legislative provisions .. 15
1.8Marking ........................................................... 15
1.9Identification of the generator unit ................... 15
2GENERAL CHARACTERISTICS .................... 16
2.1Composition of generator unit ......................... 16
2.2Command and control panel ........................... 17
2.3 Table of technical characteristics .................... 18
3INSTALLATION .............................................. 19
3.1General housing characteristics ...................... 19
3.2 Lifting ............................................................... 19
3.3 Anchoring the generator .................................. 19
3.4 Ventilation ....................................................... 19
3.5 Cooling water circuit ........................................ 20
3.5.1Seawater feed system ..................................... 20
3.5.2Components .................................................... 21
3.5.3Typical installation with the generator above the
waterline ......................................................... 22
3.5.4Typical installation with the generator below the
waterline ......................................................... 22
3.5.5Exhaust system ................................................ 23
3.6 Fuel circuit ....................................................... 24
3.6.1Fuel filter .......................................................... 24
3.6.2Electric pump ................................................... 24
3.7 Electrical connections ...................................... 25
3.7.1Battery connection ........................................... 25
3.7.2Control panel connection ................................. 25
3.7.3A.C. connection. .............................................. 26
3.7.4Generator-network switching ............................ 27
3.7.5Emergency stop ............................................... 27
4USING THE GENERATOR ............................. 28
4.1 Preliminary checks .......................................... 28
4.2 Fuelling ............................................................ 28
4.3Starting the generator ...................................... 29
4.4Stopping the generator .................................... 29
5SAFETY SWITCHES AND WARNING
SIGNALS ......................................................... 30
5.1 Protection against short circuits and overload .. 30
5.2 Protection against short-circuit of low
voltage electrical system .................................. 30
5.3 Control panel - Alarm codes ............................. 31
6MAINTENANCE ............................................... 32
6.1Preamble .......................................................... 32
6.2 Routine engine maintenance ............................ 32
6.3 Engine oil check .............................................. 32
6.4Engine oil change ............................................ 33
6.5Oil filter ............................................................ 33
6.6Replacing / cleaning the fuel pump filter........... 34
6.7 Replacing the line fuel filter .............................. 34
6.8 Bleeding the fuel system .................................. 35
6.9 Air filter ............................................................ 35
6.10 Draining the cooling system ............................. 35
6.11 Replacing the zinc anode ................................. 35
6.12 Seawater pump maintenance ........................... 36
6.13 Checking / replacing the v-belt ......................... 36
6.14 Alternator maintenance .................................... 37
6.15 Battery maintenance ........................................ 37
6.16 List of recommended spare parts ..................... 38
6.17 Periods of inactivity ......................................... 38
6.18 Period checks and maintenance ...................... 39
6.19 Anomalies, causes and remedies .................... 40
6.20 How to order the spare parts ............................ 40
7TRASPORT, STORAGE, LIFTING,
HANDLING AND PACKAGING ....................... 41
7.1 Transport and storage ...................................... 41
7.2 Lifting and handling of the packed
generator unit .................................................. 41
8GUARANTEE AND RESPONSABILITY .......... 42
8.1Guarantee ........................................................ 42
8.2 Limits of responsability .................................... 42
9DISPOSAL ...................................................... 42
9.1 Disposal of the waste materials deriving from
maintenance and scrapping ........................... 42
10WIRING DIAGRAMS ....................................... 43

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DEFINITIONS USED
The terms used are current technical terms, and where considered necessary the meaning is described
below
-Generator
An assembly of an internal combustion piston engine and an alternate current, synchronous, 2-4 pole, self-
excited generator, joined together to create a station for self-production of electrical energy.
-User system
Composed of the power supply circuits of the user equipment, including the relevant sectioning, handling,
breaking, transformation, protection, etc. devices which do not form part of the production, transmission and
distribution systems.
-Category 1 electrical system
A system where the rated voltage is greater than 50 V and smaller than 1000 V including alternate current.
-Load
A set of numerical values of electrical and mechanical magnitudes which characterise the requirements
imposed on a rotary machine by an electrical circuit or by a mechanical device at a certain instant.
-Thermal switch
Main cut-out and breaking device made up of a switch which opens automatically by thermal effect.
-Differential switch
Main cut-out and breaking device made up of a switch which opens automatically by differential effect.
-Skilled person
A person with technical know-how or sufficient experience to allow him to avoid the dangers inherent in
electricity.
-MASE specialised personnel
A person able to evaluate the job assigned to him and recognise the possible dangers on the basis of training
at the MASE training centres, with professional experience and knowledge of the equipment in question and
of the possible dangers deriving in the event of negligent behaviour.
-Supplier
A body (e.g. manufacturer, agent, installer) which supplies the equipment or services relating to the machine.
-Control
Control action by which an output variable of the controlled system (controlled variable) is affected by an input
variable of the controlling system in order to achieve a certain goal.
-Manual control
Control where the change of a variable handled is produced by a person through manual intervention.
-Automatic control
Control where the change of a variable handled is produced by a controlling device (automatic controller) without
the intervention of a person.
-Danger
Source of possible harm or damage to health.
-Protection
Guard or protection device as safety measure to protect persons from a present or potential danger.
-Casing
Part intended to assure protection of the equipment against specific outside influences and protection in every
sense against contacts.

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-Connection in bad state
The live parts are not fully covered with insulation removable by destruction only, the connections are not secure
because of unstable tightening of the parts and a development of oxide between the parts.
-Direct contact
Contact of persons or animals with live parts.
-Control circuit
Circuit used to control machine operation.
-Equipment
General term which comprises materials, devices, equipment, accessories and similar used in conjunction with
an electrical installation.

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PRELIMINARY PRESCRIPTIONS
FIELD OF EMPLOYMENT:
THE GENERATOR IS PROPER FOR TO PRODUCE IN WAY AUTONOMOUS ELECTRIC ENERGY IN THE
LIMITS OF TENSION AND WATT DECLARED BY THE BUILDER.
Consult this manual carefully before proceeding to the use and to any operation on the genset.
FAILURE TO RESPECT THE SPECIFICATIONS CONTAINED IN THIS USE AND MAINTENANCE MANUAL
WILL RESULT IN FORFEITURE OF THE GUARANTEE ON THE PRODUCT.
This manual was drawn up by the manufacturer and forms an integral part of the generator equipment, definition
used as indicated in Directive 98/37/EC; the information contained in the manual is addressed to all the persons
involved in the operating life cycle of the generator, and is necessary to inform both those who effectively carry
out the different operations and those who coordinate the activities, to arrange the necessary logistics and to
regulate access to the place where the generator will be installed and operated.
This manual was drawn up by the manufacturer with the purpose of providing essential information and
instructions for proper use and maintenance in conditions of safety. It constitutes an integral part of the generator
equipment and must carefully be protected from any agent which may damage it for the entire life cycle of the
generator. The manual must accompany the generator if transferred to another user or owner.
It is opportune to remember the supplied generator group needs installation.
The technician will release, at the end of the work, a declaration to the meaning of the normative applied.
The manual defines the purpose for which the generator was constructed and contains all the information
necessary to guarantee safe and proper use.
Constant observance of the instructions contained in this manual guarantees the safety of the operator, protection
against damage to persons or things, operating economy and a longer life of the generator.
The drawings are provided by way of example. Even if the generator in your possession differs from the
illustrations contained in this manual in elements of little significance, for example the colour, the safety of the
generator and the information provided are nevertheless guaranteed.
To facilitate consultation, it has been divided into sections identifying the main concepts; for a quick look at the
topics, consult the index.
Ongoing improvement and development of the product may have led to modifications to the generator which are
not included in this publication.
Whenever a problem concerning the generator or this publication arises, consult with Mase Generators
SPA for the latest information available.

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1 GENERAL INFORMATIONS
1.1 CONFORM USE
The generator is suitable for independent production of electrical energy within the voltage and wattage limits
declared by the manufacturer.
Any other use outside the already stated field of use is prohibited: the generator is intended for marine use.
The generator has been designed to operate independently (without operator) if not for sporadic checks.
The limits of use are:
-operating temperature: -10°C (14°F), +40°C (104°F)
-relative humidity: 30% - 90%
-the generator is suitable for marine operation.
Installations are subject to approval by maseor by an installer authorised by mase.
Arbitrary modifications to the machine are prohibited for safety reasons.
Original spare parts must be used on pain of losing machine conformity.
All the operations that require dismantling of special parts may only be carried out by technicians authorised by
the local dealer or the manufacturer.
Only masetechnicians or personnel trained by masehave the necessary knowledge of the generator and
the special equipment as well as the experience to carry out any operation in the most economical and reliable
way.
1.2 RESIDUAL RISKS
The generator has been designed taking into account the safety regulations set out in the EC directives and
standards; nonetheless, the following residual risks remain:
-injury caused by contact with hot parts during maintenance.
-injury caused by electrocution during maintenance on the electric panel.
-risks connected with long periods of exposure to the noise of the generator (with open cowling).
-risks due to contact with the generator lubricants during maintenance.
-risks due to the fire hazard the fuel represents.
Because of the typical intrinsic danger of the Generators, you are reminded that, although the generator has
been designed, constructed and tested in accordance with the safety regulations, only proper and careful use
can guarantee full safety; to this end, the various precautions to be taken during use of the Generator are
listed below.

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SAFETY INSTRUCTIONS
The electromechanics equipments, included the generating sets, switch, command electric equipments and accessories,
can cause damages to people and,if they are installed, used or mainteined with not qualified operations, they can put
in serious danger the life of people. To avoid accidents is necessary to know the potential risks and operate with
caution.Read and follow all the precautions and the instructions for the safety. PRESERVE THESE INSTRUCTIONS.
The manual shows varied typologies of precautions and instructions for the safety: Danger, Warning, Caution.
1.3 SAFETY SIMBOLS
Indicates that particular attention must be paid in order to prevent serious risks which could lead to death or
possible harm to the health of personnel.
A condition which mayoccur during the lifetimeof a product, systemor plant considered atrisk regarding damage
to persons, property, the environment or economic loss.
Indicates that particular attention must be paid in order to prevent serious consequences which could result
in damage to tangible goods, such as the resources or the product.
Other symbols on this manual
Particular important instructions
Indicates components and non inclusive parts with the base configuration.
Carefully consult this manual before using or carrying out any operation on the generator.
The routine maintenance operations, must be carried out by qualified personnel who have the appropriate
equipment and protections.

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GB Cod.46286
Cod. 41527
Cod. 42264
Cod. 42329
Cod. 41650
Cod. 42136
Cod. 40179
Cod. 41961
Cod. 42900
Cod. 43244
Cod. 41961
Cod. 42586
Cod. 41763
Cod. 42868
Cod. 017224
Cod. 41650
Cod. 42329
1.4 SYMBOLS ON THE GENERATOR GROUP
Depends
on the
version

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1.5 SAFETY LABEL INFORMATIONS
• These labels warn the user of any danger which may cause serious injury.
Carefully read the meaning and the precautions described in this manual.
•If the label detaches or becomes illegible, replace it with a new one which can be requested from an authorised
masedealer.
Danger Symbols Meaning
HOT PARTS
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on generator set untill it is allowed to cool.
Servicing exhaust system.
Hot parts can cause severe injury or death.
Do not touch hot engine parts. An engine becomes hot while running and exhaust system
components become extremely hot.
ACCIDENTAL STARTING
Accidental starting. Can cause severe injury or death.
Disconnect battery cables before working on generator set. (Remove negative (-) lead
first when disconnecting battery. Reconnect negative (-) lead last when reconnecting
battery).
Disabling generator set. Accidental starting can cause severe injury or death.
Before working on the generator set or connected equipment, disable the generaset
as follows:
1)Disconnect power to battery charger, if equipped.
2)Remove battery cables (remove negative (-) lead first).
3)Reconnect negative (-) lead last when reconnecting battery.
Follow these precautions to prevent starting of generator set by the remote start/stop
switch.
Hazardous voltage. Moving rotor.
Can cause severe injury or death.
Operate generator set only with all guards and electrical enclosures in place.
MOVING PARTS
Rotating parts.
Can cause severe injury or death.
Do not operate generator set without all guards, screens, and covers in place.
PREVENTING FIRE
• Be sure to use the proper diesel fuel.
• Be sure to stop the engine before refueling.
• If you spill fuel, wipe off such spillage completely.
• Never place oil or other flammable materials (such as straws, withered
grass) close to the engine during running or shortly after shutting it down.
• Check fuel oil and engine oil for leakage from their piping lines to cause
fires.

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PREVENTING FIRE
Can cause severe injury or death.
• Start
• Start the engine only from a starter switch without any load or in neutral posi-
tion of the clutch of machine unit.
The machine unit suddenly starts to move or generates power to cause serious
personal injury.
• Keep the machine unit sufficiently away from a building and flam-
mable materials during engine running. It may cause fires due to hot
exhaust gas and engine body.
• Keep sparks, open flames or any other form of ignition (match, cigarette,
etc.) away when fueling / refueling. Fire and or an explosion may result.
FIRE
Can cause severe injury or death.
In case of fire, do not open the chest
Extinguish the generator fire and immediately unload the whole content of the portable
extinguisher through the hole indicated by the label.
EXHAUST SYSTEM
Carbon monoxide.
Can cause severe injury or death.
The exhaust system must be leakproof and routinely inspected.
Carbon monoxide symptoms.
Carbon monoxide can cause severe nausea, fainting, or death.
Carbon monoxide is a poisonous gas witch is present in exhaust gases.
Inspecting exhaust system.
Carbon monoxide can cause severe nausea, fainting, or death.
In addiction to routine exhaust system inspection,install a carbon monoxide detector.
Consult your boat builder or dealer for approved detector installation. Inspect your
detector before each generator set use. Test the carbon monoxide detector function
per the manufacter’s instructions and keep it operational at all times.
Installing exhaust system.
Carbon monoxide can cause severe nausea, fainting, or death.
In addiction to routine exhaust system inspection,install a carbon monoxide detector.
Use the following precautions when installing and operating generator set.
Do not install exhaust outlet where exhaust can be drawn in throught portholes,vents,or
air conditioners.
If the generator set exhaust discarge outlet is near the waterline, water could enter
the exhaust discharge outlet and close or restrict the flow of exhaust.
Danger Symbols Meaning

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EXHAUST SYSTEM
Carbon monoxide.
Group generator use.
Carbon monoxide can cause severe nausea, fainting, or death.
Carbon monoxide is an odorless, colorless,tasteless, non irritating gas,able to, if inhaled
only also for brief time to provoke the death.
Be especially careful if operating the generator set when moored or anchored under
calm conditions as gases may accumulate.
If operating the generator set dockside, moor the ccraft so that the exhaust discharges
on the lee side (the side sheltered from the wind). Alway be aware of others-make sure
your exhaust is directed away from other boats and buildings.
HAZARDOUS VOLTAGE / ELECTRICAL SHOCK
Hazardous voltage. Moving motor.
Can cause severe injury or death.
Operate generator set only with all guards and electrical enclosures in place.
Grounding generator set. Hazardous voltage can cause severe injury or death.
Electroconduction is possible whnever electricity is present. Open main circuit
breakers of all power source before servicing equipment. Configure the installation to
electrically ground the generator set and alectrical circuits when in use.
Never contact electrical leads or appliances when standing in water or on wet ground,
as the chance of electroconduction increases under such conditions.
Disabling generator set.
Hazardous voltage can cause severe injury or death.
To disable the generating set from load, turn off the the automatic switch of the line or
disconnect the output cables from the commutation switch and block the final part of
cables. Hazardous voltage to load during an ispection cold cause severe damages to
people and to equipment. Do not use the emergency button instead the automatic switch
of the line.
Battery short circuit.
Explosion can cause severe injury or death. Short circuits can cause severe
damages to people and/or equipment. Disconnect the battery before doing installation
operations o generator set maintenances. Remove all jewels before doing maintenance
on the maintenance.
Remove negative (-) lead first when disconnecting battery. Reconnect negative (-) lead
last when reconnecting battery.
Never connect negative battery lead (-) to positive lead (+) of starting solenoid.
Danger Symbols Meaning

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Danger Symbols Meaning
BATTERY
Do not touch the electrolitic battery acid
Sufficient ventilation of the battery area.
• Keep the area around the battery well ventilated, paying attention to keep
sparks, open flame and any other form of ignition away. During engine running or
charging battery, hydrogen gas is produced from the battery and
can be easily ignited.
Battery acid. Sulfuric acid in batteries can cause severe injury or death.
Sulfuric acid in battery ccan cause permanent damage to eyes, burn, skin, and hole
in clothing.
Always wear splash-proof safety googles when working near the battery. If battery
acid is splashed in the eyes or skin, wash immediately the affected area with large
quantity of clean water. Seek immediate medical aid in case of eyes contact.
Do not intentionally make the battery spark by short-circuiting to check its
remaining charge. It will cause fires.
Make sure to use a gravimeter to check the remaining charge of the battery.
If the battery electrolyte frozen, recharge the battery after warming up to
thaw it.
SAFETY CLOTHING
Do not expose your skin to high pressure fuel spray
Be careful so as not to bring your skin in contact with high pressure fuel spray
from broken fuel injection pipe to penetrate your skin to cause inflamed.
If exposing to the spray should occur, obtain prompt medical treatment.
Beware of dirt from air blowing
Wear protective equipment such as goggles to protect your eyes when
blowing compressed air or steam. Dust or flying debris can hurt eyes.

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KVA
Hz
Cos.Ø
V V
A A
Degrees of protection IP
°C
m
Performance class
year of manifacture
Rated po er factor
Rated voltage
declared frequency
Mass Kg
Class of insulation
Temp. max of use
Altitude max. of use
Rated current
Rated po er 3F
Code Serial n°
1
2
5
4
14
6
7
8
9
10
11
12
13
15
16
3
1.6 REFERENCE DOCUMENTS
The instructions for use provided with each generator
are made up of a collection of documents of which this
manual represents the General Part. The following
documents are normally provided separate.
aCE declaration of conformity.
bInstruction manual for use and maintenance of
the generators,(this manual).
cEngine use and maintenance manual.
dList of maseService Centres.
emaseWarranty certificate.
fWarranty card.
gEPA certificate (Engine manufacturing)
1.7REFERENCE REGULATIONS AND LEGISLATIVE PROVISIONS
The generator groups, built by mase, destined to the
countries of the European Community, are conforming
to the applicable EC directives, and they are provided of
a EC Declaration of Conformity.
EN 12601: Reciprocating internal combustion engine
driven generating sets.
98/37/EC and subsequent amendments:
Essential machine requirements for safety and health
protection (“Machine” directive).
Directive 2006/95/EC (73/23/EC and subsequent
amendments contained in the directive 93/68/EC):
Guarantee of safety of electrical material intended for use
within certain voltage limits, (“Low Voltage” Directives).
EN 60204.1: Electrical equipment of machines.
1.8 MARKING
The generator identification plate carries all the
identification data conforming to ISO 8528 and in
accordance with the provisions for EC marking for
those cases where required. Below is a facsimile of the
identification plate fixed on the hull of each generator.
1.9 IDENTIFICATION OF THE GENERATOR UNIT
1 - Machine name
2 - Machine code
3 - Serial number
4 - Rated power
5 - Declared frequency
6 - Rated power factor
7 - Rated voltage
8 - Rated current
9 - Degree of protection
10 -Class of isolation
11 -Temperature max. of use
12 -Altitude max. of use
13 -Performance class
14 -Year of construction
15 -Manufacturer - Adress
16 -Weight
The machine code number, the serial number
and the year of construction must always be
indicated when contacting the manufacturer
for information, order of spare parts, etc..

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13
10
17
11
15
16
12
14
18
8
12
34
5
5
5
67
9
2 GENERAL CHARACTERISTICS
The generators have been designed for use in the
marine field, using highly reliable 3000/3600 rpm air/
water-cooled diesel engines. Particular attention has
been paid to the degree of protection against external
agents, engine protection and protection of the electrical
parts against overload or overheating, adopting automatic
systems able to stop the generator in the event of
malfunctioning.
The generator is particularly quiet thanks to an internally
insulated soundproof casing and an advanced
soundproof system for combustion smoke exhaust.
The alternators used are the synchronous self-energized
type.
2.1 COMPOSITION OF GENERATOR UNIT
The generator unit is essentially composed by the
following components.
1 - Fixed frame
2 - Upper openable cowling
3 - Beside openable cowling
4 - Electric connection cowling
5 - Anchorage stirrup
6 - Emergency button
7-Exhaust gas and cooling water connection
8-Seawater intake connection
9-Tank connections
10 -Engine air filter
11 -Check / refill oil cap
12 -Seawater pump
13 -Water/air radiator
14 -Starting motor
15 -rpm regulation screw
16 -Battery connection lead (+)
17 -Battery connection lead (-)
18 -Remote control panel connector
19 -Zinc anode
20 -Fuel pump filter
21 -Fuel pump

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20
13
19
21
6
13542
2.2REMOTE COMMAND AND CONTROL PANEL (STANDARD VERSION)
Each generator is fitted with an instrument panel for
commands and controls with the following components:
1) STARTBUTTON
2) STOPBUTTON
3) MENU NAVIGATION BUTTON
4) MENU NAVIGATION BUTTON
5) MENU SELECTION BUTTON
6) DISPLAY

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2.3 TECHNICAL CHARACTERISTICS TABLE
(1) Limited - time running power (LTP) ISO 8528-1
It is the maximum power that, under the environment conditions established by the norm ISO 3046/1, the generator group it is able to disburse
for a maximum of 500 hours for year, of which a maximum of 300 hours among the interval of maintenance prescribed by the builder. It is accepted
the operation to this power conditions the duration of the group.
An overload of the 10% is admitted only for regulation.
(2) Prime power (PRP) ISO 8528-1
It is the available maximum power for a variable power cycle that the generator group is able to disburse for a boundless number of hours for year
among the interval of maintenance prescribed by the builder and under the environment conditions established by the norm ISO 3046/1. The middle
power during a period of 24 hours, doesn't have to exceed 80% of the PRP.
An overload of the 10% is admitted only for regulation.
MAX POWER (LTP)
1
2,2 kW
CONTINUOUS POWER (PRP)
2
1,9 kW
POWER FACTOR (Cos
Φ
)
1
RATED VOLTAGE
120
V
RATED FREQUENCY
60
Hz
GRADE OF PROTECTION
IP 23
MAX TEMP. OF USE
40 - 104
°C - °F
MIN TEMP. OF USE
-5 - 23
°C - °F
MAX ALTITUDE OF USE
1000 - 3281
m - ft
MAX INCLINATION DURING
(PERIODICAL 3 min) 30°
MAX INCLINATION DURING USE
(CONTINUOUS) 20°
PORTATA POMPA ACQUA MARE 20 - 5,3
L/min - gal/min
L
510 - 20
mm - in.
DIMENSIONS
W
403 - 15,8
mm - in.
H
465 - 12,3
mm - in.
MASS
65 - 143
kg - lbs
TYPE
4 STROKE
MANUFACTER
YANMAR
MODEL
LV48
DISPLACEMENT 211 - 12,9 cm
3
- in
3
MAX POWER
4,7 - 3,46
HP - kW
n° OF CYLINDERS
1
CYLINDERS / HEAD MATERIAL
ALLUMINIUM
RATED SPEED
3600
rpm
SPEED CONTROL
CENTRIFUGAL / MECCANICAL
INDUCTION SYSTEM
NATURAL
FUEL
DIESEL
INJECTION SYSTEM
DIRECT
FUEL FEEDING PUMPS
ELECTRIC
MAX PREVALENCE FUEL PUMP
700 - 27,5
mm - in.
FULL LOAD CONSUMPTION 0,8 - 0,21 L/h - gal/h
COOLING
AIR / WATER
LUBRIFICATION SYSTEM FORCED
OIL SUMP CAPACITY 0,85 - 0,22 L - gal
COMBUSTION AIR VOLUME 0,34 - 12 m
3
/min - cfm
ELECTRIC PLANT
12
(negative pole to ground)
V
STARTING
ELECTRIC
STARTING MOTOR 12 - 0,8 V - kW
STARTING BATTERY 12 - 45 V - h
BATTERY CHARGER 12 - 10 V -
STOPPING SYSTEM
SOLENOID
TYPE
SYNCHRONOUS, SELF-REGULATED
n° OF POLES
2
MAX CURRENT
18,3
ISOLATION CLASS
H
VOLTAGE REGULATOR
SELF-EXCITED
VOLTAGE STABILITY
±
10%
FREQUENCY STABILITY
±
5%
COOLING
AIR / WATER
MODEL
IS 2.7
GENER L FE TURES
LTERN TOR
ENGINE

IS 2.7 B
- 19
GB
GB
3
mm
[in.]
2
1
3 INSTALLATION
The generator may only be installed by qualified
technicians. Malfunctioning due to improper
installation may cause injury or death.
3.1 GENERATOR HOUSING CHARACTERISTICS
- The generator must be installed in a sufficiently
ventilated room able to assure the amount of air required
for engine combustion.
- The room must be acoustically separated and isolated
from the living quarters.
- The generator must be positioned in such a way as to
facilitate normal maintenance operations.
- It is advisable to install the generator in the
propulsion engine room provided that it meets the
above conditions.
- The air must be clean.
- The air temperature in the place of installation must be
between -5°C (23°F) and +40°C (104°F).
- The relative humidity must not exceed 50% at a
maximum temperature of +40°C. Relative humidity of 90%
at +20°C (68°F) and 100% at +25°C (77°F) is
permissible.
3.2 LIFTING
Follow the procedure below to lift the generator:
- Place a homologated lifting strap of adequate capacity
(ref. 2) around the exhaust manifold (ref.1).
- Lift and handle with attention. See also chap. 7.2
3.3 ANCHORING THE GENERATOR
To anchor the generator, arrange a base to support the
weight and vibrations.
Drill holes in the base as shown in fig.3.
3.4 VENTILATION
The generator is equipped with an internal forced cooling
system through a water/air exchanger.
The amount of air required for combustion is
aspirated through the intake located on the base (ref.4):
Therefore, always check that this intake is
free of any obstruction.

IS 2.7 B
- 20
GB
GB
12
3.5 COOLING WATER CIRCUIT
The generator engine is cooled by an open-circuit
system in which seawater circulates.
At the time of installation, a seawater feed circuit
must be arranged for cooling, and an exhaust system
for the combustion gas and water mixture.
3.5.1 SEAWATER FEED SYSTEM
Two water intake systems are normally adopted on
boats:
-Direct intake system (ref.1).
-System with baffle (ref.2).
maserecommends using the direct intake system
(ref.1), since it prevents intake of pressurised water into
the intake ducts, instead generating a vacuum easily
overcome by the water pump head of the generator.
Do not fit any type of protection cap on the direct
intake system.
The system with baffle (ref.2), on the other hand, may
cause the following problems:
a- mounted with the slots facing the bow:
In this case, during navigation and with the generator
off, pressure is created in the water intake duct, which
may cause the system to fill up until reaching the exhaust
port, thus making it possible for water to enter the
cylinders.
b- mounted with the slots facing the stern:
In this case, during navigation a vacuum may be created
in the water intake duct such as to inhibit the water pump
to activate the cooling system or such as to limit the
flow rate with consequent overheating of the generator.