Mase Generators PD 50 S User manual

PD 50 S
PD 70 S
PD 7/4 S
Tipo modello
N° matricola
Codice
Rev.3A.A. 11 - 03- 08
cod.42639
GRUPPO ELETTROGENO MANUALE DI USO E MANUTENZIONE I
GENSET USE AND MAINTENANCE MANUAL GB

PD 50 - 70 - 7/4 S
- 2GB
GB
DEFINITIONS USED ................................................ 4
1 GENERAL INFORMATIONS ............................ 6
1.1 Conform use ................................................... 6
1.2 Residual risks ................................................. 6
1.3 Symbols on the generator group ..................... 7
1.4 Position of safety labels .................................. 8
1.5 General danger information ........................... 10
1.5.1 Danger of entanglement ................................ 10
1.5.2 Danger of burns ............................................ 10
1.5.3 Danger of harm to hearing ............................. 11
1.5.4 Danger of intoxication ................................... 11
1.5.5 Danger of fire or explosion ............................ 11
1.5.6 Danger if failing to use personal protection
devices ......................................................... 11
1.5.7 Danger caused by the engine starting ........... 12
1.5.8 Danger of electromagnetic radiation .............. 12
1.5.9 Danger of electrocution ................................. 12
1.5.10 Danger resulting from bad storage ............... 12
1.6 Reference documents ................................... 13
1.7 Referenceregulationsandlegislative provisions . 13
1.8 Marking ........................................................ 13
1.9 Identification of the generator unit ................. 13
2 GENERAL CHARACTERISTICS .................... 14
2.1 Configurations ............................................... 14
2.2 Composition of generator unit ....................... 14
2.3 Instrument panel ........................................... 14
2.4 Table of technical characteristics .................. 15
2.5 Noise emission ............................................. 16
3 INSTALLATION ............................................. 17
3.1 General installation criteria ........................... 17
3.2 Important information .................................... 17
3.2.1 Inspection of materials .................................. 17
3.2.2 Safety standards for diesel engines .............. 17
3.2.3 Foundations ................................................. 17
3.3 Exhaust plant ............................................... 17
3.3.1 Exhaust pipe ................................................ 17
3.3.2 Exhaust pipe design ..................................... 17
3.4 Ventilation .................................................... 18
3.5 Fuel system ................................................. 18
3.6 Electrical connection .................................... 18
3.6.1 Power Cable sizes ........................................ 18
3.6.2 Power cable layng ........................................ 18
3.6.3 Earthing ........................................................ 18
3.7 Outdoor installation ....................................... 19
3.8 Indoor installation ......................................... 20
4 USING THE GENERATOR ............................. 21
4.1 Preliminary checks ....................................... 21
4.2 Refuelling ...................................................... 21
4.3 Battery ......................................................... 21
4.4 Starting ........................................................ 22
4.5 Using the generator ...................................... 22
4.6 Stopping ....................................................... 22
4.7 Emergency stop ........................................... 22
5 PROTECTIONS AND WARNING SIGNALS .. 23
5.1 Protection against short-circuit and overload . 23
5.2 Engine protection module ............................. 23
5.3 Operation ...................................................... 23
6 MAINTENANCE ............................................. 24
6.1 Preamble ...................................................... 24
6.2 Ordinary engine maintenance ....................... 24
6.3 Engine oil change ......................................... 24
6.3.1 Changing oil filter .......................................... 24
6.4 Changing fuel filter ....................................... 24
6.4.1 System bleeding........................................... 25
6.5 Air filter cleaning/replacement ....................... 25
6.6 Coolant check .............................................. 25
6.7 Battery check ............................................... 25
6.8 Suction grid and vent cleaning ...................... 25
6.9 Scheduled maintenance table ....................... 25
6.10 Period of inactivity ........................................ 26
6.11 Wiring diagram list ........................................ 26
7 ANOMALIES, CAUSES AND REMEDIES ...... 27
7.1 How to order the spare sparts ....................... 27
8 TRANSPORT, STORAGE, LIFTING AND
HANDLING ................................................... 28
8.1 Transport and storage ................................... 28
8.2 Lifting and handling ....................................... 28
8.2.1 Lifting and handling with crane ...................... 28
8.2.2 Lifting and handling with forklift truck............. 28
8.3 Version with slow-drawn trailer ...................... 29
9 GUARANTEE AND RESPONSIBILITY ........... 30
9.1 Guarantee .................................................... 30
9.2 Limits of responsibility .................................. 30
10 DISPOSAL .................................................... 30
10.1 Disposal of the waste materials deriving from
maintenance and scrapping .......................... 30
11 WIRING DIAGRAMS ..................................... 30
11.1 Wiring diagram of PD 50 S version .............. 31
11.2 Wiring diagram of PD 70 S version .............. 32
11.3 Wiring diagram of PD 7/4 S version ............. 33
INDEX

PD 50 - 70 - 7/4 S
- 3GB
GB
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, and innovativeresearchperformed by ResearchandDevelopment 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, constitutes an 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 SPA
MASE GENERATORS S.p.A. Via Tortona, 345
47023 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 MASE GENERATORS SPA, RESERVES ALL THE RIGHTS ON THE MANUAL PRESENT. ANY TOTAL
OR PARTIAL REPRODUCTION IS PERMITTED WITHOUT WRITTEN AUTHORIZATION OF THE MASE
GENERATORS SPA.

PD 50 - 70 - 7/4 S
- 4GB
GB 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.

PD 50 - 70 - 7/4 S
- 5GB
GB
- 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
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 may occur during the lifetime of a product, system or plant considered
at risk 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.
Instructions of particular importance.
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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PD 50 - 70 - 7/4 S
GB
GB 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 industrial use.
The generator has been designed to operate independently (without operator) if not for sporadic checks.
The limits of use are:
- operating temperature: -5° +40°
- relative humidity: 30% - 90%
- the generator is suitable for operation outdo; it may not be operated in closed environments since the generator
produces exhaust gas.
Inside installation is subject to approval by Mase or 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 Mase technicians or personnel trained by Mase have 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: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.
- 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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GB
Cod. 42352
cod. 42118
Cod. 42349
Cod. 42112
cod. 41781
cod. 41779
PASSED
cod. 40179
Cod. 41834
cod. 41781
Cod. 42346
STOP
Cod. 42350
DIESEL
Cod. 41780
Cod. 42353
Cod. 42353
Cod. 42113
Cod. 42348
1.3 SYMBOLS ON THE GENERATOR GROUP

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GB
STOP
1.4 POSITION OF SAFETY LABELS
• 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
Mase dealer.
Danger Symbols Meaning
- Caution to avoid burns, do not touch during operation.
The exhaust manifold and the engine, pay attention to the labels on the generator.
- Leave the engine to cool down before storing it indoors.
- Read and understand the Use and Maintenance Manual before starting the generator.
- The Mase generator has been designed so as to guarantee safe and reliable operation
provided that the instructions are followed. Otherwise, personal injury or damage to
the equipment may result.
- The exhaust gases contain toxic carbon monoxide.
- Never operate the generator in a closed space.
- Provide for adequate ventilation. If installed indoors, scrupulously observe the ventilation
regulations.
- The fuels are highly flammable and in certain conditions also explosive.
- Fill up in a well-ventilated area with the engine off.
- Do not smoke or create sparks while filling up.
- Immediately clean off any fuel leaks.
- Danger of possible corrosive acid leaks.
- Danger of crushing the upper limbs.
- Danger of electric discharge: consult the manual.
- Danger of electric discharge: consult the manual.
- Danger of burns: Hot surfaces.

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PD 50 - 70 - 7/4 S
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DIESEL
Obligation Symbols Meaning
- Obligation to connect the generator to earth.
Prohibition Symbols Meaning
- The connections to an emergency electric network must be carried out by
specialised electricians in compliance with the relevant regulations in force.
Improper connections may cause current feedback from the generator to the
electrical lines connected. These current feedbacks may cause electroconduction
to the people working for the electricity company or who come into contact with the
lines during the failure. Moreover, once the line has been restored, the generator
may explode, burn or cause fires in the electrical system of the facility.
- No smoking or use of open flames.
- Do not clean, lubricate, repair or adjust moving parts.
- Do not extinguish fires with water, use homologated extinguishers.
Information Symbols Meaning
- Indicates the position of the dipstick for the engine oil check.
- Indicates the location of a point of the lifting hook of the generator.
- Indicates the position of the fuel tank to fill up the generator.

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1.5 GENERAL DANGER INFORMATIONS
• It is recommended to learn how to stop and operate all the controls.
• Do not allow unqualified personnel to use the generator.
• Even though the generator is protected, do not stand near it.
• Do not remove the labels for any reason and request replacement if necessary.
• Before starting the Generator or before starting any lubrication or maintenance operation, it is essential that the
personnel responsible has read and understood all the WARNINGS, CAUTION and DANGER notices in this
manual and in the additional technical documentation provided.
• Before any operation on the generator, ensure that the primary engine is not running and that no parts are moving,
and post a sign saying DO NOT SWITCH ON or similar at the start switch or the controls before carrying out the
maintenance or repair work on the generator.
• Nevertheless, the manufacturer cannot foresee all the possible circumstances which may lead to potential risks
in the effective conditions of use of the Generator.
Any operations and/or procedures for maintenance not expressly recommended or indicated in the user manuals
must always be notified to and approved by the manufacturer.
In the event that a procedure not specifically recommended needs to be applied, the user is responsible for assuring
that such procedure is safe and does not cause harm to persons.
• The manufacturer declines all responsibility for damage to persons or things deriving from inobservance of the
safety regulations.
• Carefully examine the safety warning plates on the generator and respect the relevant instructions.
1.5.1 DANGER OF ENTANGLEMENT
• Do not remove the original protections from any of the exposed rotating parts, hot surfaces, air intakes, belts and
live parts.
• Do not carry out any maintenance operation with the generator running.
• Do not wear flapping garments, such as scarves, foulards, bracelets, etc. and all garments must be tied with elastic
at the edges.
• Do not clean or carry out maintenance on moving parts
1.5.2 DANGER OF BURNS
• Do not permit unskilled persons or without adequate training to use the generator.
• Do not permit children or animals to approach the generator when it is in operation.
• Never touch the exhaust, the relevant protection or the engine body when the generator is running or still hot.
• Do not lean against or sit on the generator for any reason whatsoever.
• Identify the position of the fire extinguishers or other protection and emergency devices and learn their functioning.
• Identify any sources of danger such as fuel, engine oil or acid solution leaks, condensate in the drip caps, high
voltage, high pressure.
• Do not cause short-circuits by placing keys or tools on the batteries or on the cable fittings.
• The battery fluid contains sulphuric acid which is extremely corrosive and harmful to the skin. Always wear
protective gloves and be extremely careful to avoid spillage when pouring the acid. In the event of contact, wash
the affected part thoroughly with running water and consult a physician, in particular when the eyes are involved.

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1.5.3 DANGER OF HARM TO HEARING
• Do not stand near the generator for long periods without protective earmuffs since hearing may be reduced.
Prolonged exposure to noise above 85 dB(A) may cause health disorders. It is in any case recommended
to use appropriate protection systems (e.g. headsets, earplugs, etc. ).
1.5.4 DANGER OF INTOXICATION
• The exhaust gases contain toxic carbon monoxide.
• Never use the generator in tunnels or in any place with poor ventilation. If indoor use is inevitable, it is essential
to provide for proper and efficient ventilation in order to prevent intoxication of persons or animals.
• Check that the engine exhaust is free and that the pipes allow evacuation of the exhaust fumes.
• Check that the exhaust gases are discharged to the outside in a safe position away from doors, windows and air
intakes.
1.5.5 DANGER OF FIRE OR EXPLOSION
• Always turn off the engine before refuelling.
• Do not smoke during refuelling.
• Refuelling must be carried out with extreme care, ensuring that fuel does not overflow from the engine tank
respecting the maximum level.
• In the event of fuel spillage from the tank, thoroughly dry and clean the parts involved.
• Check that there are no fuel leaks and that the pipes are undamaged.
• When refuelling has been completed, tightly close the fillercap
• Keep flammable liquids, matches and other explosive and/or flammable products away from the generator, since
the temperature near the exhaust is high during operation.
• Never leave flammable liquids or cloths soaked in flammable liquids in proximity of electrical equipment (including
lamps) or parts of the electrical system.
• The batteries develop hydrogen, a highly explosive gas. It is recommended not to smoke nor cause sparks in the
vicinity, in particular during charging.
• Do not obstruct the cooling air inlets/outlets.
• In the event of fire, use a homologated fire extinguisher and never use water.
1.5.6 DANGER IF FAILING TO USE PERSONAL PROTECTION DEVICES
• The persons responsible for handling must always wear protective gloves and safety shoes.
• Wear safety shoes and overalls.
• If the generator needs to be lifted from the ground, the operators must wear a protective helmet.
• Immediately change wet overalls.
• Use protective gloves.

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1.5.7 DANGER CAUSED BY THE ENGINE STARTING
• Do not leave disassembled parts, tools or anything else not forming part of the system on or near the engine.
• Install the protections necessary for safety on the parts completing the system.
• Operate the generator on a flat surface as far as possible. For continuous operation, the maximum permitted engine
inclinationis 20degrees.Greaterinclinationof thegenerator mightcausethe fuelto leakoutorcauseproblems withengine
oil pressure.
• Toprevent therisk offireandforproperventilation,position thegenerator atleast 1m(3ft)frombuildings orother equipment
duringoperation.
• Check the oil level by means of the dipstick.
• Check that all the electrical utilities are off so that the generator is not started on load.
• Check perfect functioning of the devices which stop the generator in the event of failure due to low oil level.
• Identify the position of the emergency stop buttons, switches and other emergency systems on the generator.
• Learn the special emergency procedures relative to the installation in question.
1.5.8 DANGER OF ELECTROMAGNETIC RADIATION
• Do not allow access to persons wearing a pacemaker because of possible electromagnetic interference with the device.
1.5.9 DANGER OF ELECTROCUTION
• When using the generator always bear in mind that in wet or very humid places and in confined conduction spaces it is
obligatory to comply with Articles 313 and 318 of Presidential Decree No. 547 27/04/55, as well as Chap. 11 Section IV
of the CEI 64-8 regulation.
• Immediatelychangewet overalls.
• Insulate all the connectors and detached wires.
• Do not leave the power terminal board of the generator uncovered; check that the electrical power and auxiliary service
connections have been made properly.
• Do not power loads with a voltage different from that delivered by the generator
• Do not spray water directly onto the electrical parts
• Do not clean the internal electrical parts with compressed air, since short-circuits or other faults may occur.
Do not tamper with the active protections, thermal switches and differential magnetothermal switches.
• In the event of malfunctioning, do not remove the panel to attempt repairing it. Contact Mase specialised personnel.
• Do not access the generator with wet hands, since it is a potential source of electric shock if improperly used.
• Takethe necessary precautionstoprevent the dangerofelectrocution; check thattheearthing system hasbeeninstalled
and constructed in accordance with regulations.
• For the safety of the users, the earth connection of the generator must always be carried out paying particular attention
to the cable cross-section used. For the connection of the earth cable use the dedicated terminal on the generator.
The manufacturer is not responsible for any damage caused by failure to earth the system.
1.5.10 DANGER RESULTING FROM BAD STORAGE
• Packed and unpacked generators must be stored in a cool and dry place and never exposed to bad weather.
• Avoid stacking packed generators to prevent them from falling causing damage to persons and/or things.

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PD 50 - 70 - 7/4 S
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GB
KVA
Hz
Cos.Ø
VV
AA
Degrees of protection IP
°C
m
Performance class
year of manifacture
Rated power factor
Rated voltage
declared frequency
Mass Kg
Class of insulation
Temp. max of use
Altitude max. of use
Rated current
Rated power 3F
Code Serial n°
1
2
5
4
6
7
8
9
11
12
13
15
16
3
14
10
1.6 REFERENCE DOCUMENTS
The instructions for use provided with each generator are
made up of a collection of documents of which this manual
representstheGeneralPart.Thefollowingdocuments are
normally provided separate.
aECdeclaration of conformity.
bInstruction manual for use and maintenance of the
generators,
(this manual).
cEngine use and maintenance manual.
dList of mase Service Centres.
emaseWarranty certificate.
fWarranty card.
1.7 REFERENCE REGULATIONS AND LEGISLATIVE PROVISIONS
All the masegenerators are designed and manufactured
in compliance with the legislation in force.
The generator and its components are constructed in
accordance with the following applicable regulations and
directives.
98/37/EC and subsequent amendments:
Essential machine requirements for safety and health
protection (“Machine” directive).
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).
2000/14/EC Directive about noise emission in
environment (only for models indicated in noise emission
tab.).
1.8 MARKING
The generator identification plate carries all the
identification data 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..

PD 50 - 70 - 7/4 S
- 14GB
GB
PD 50 - 70 S
PD 7/4 S
2 3 65
410 9
411 9
3 65
C
A
BD E F
G HH IL
1
21 8
7
8
2 GENERAL CHARACTERISTICS
The generators have been designed for use in the industrial
field, using highly reliable 3000 rpm air-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 generators are 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
with electronic voltage adjustment.
2.1 CONFIGURATIONS
One of the characteristics is that it can be supplied in different
configurations:
1) For use as fixed installation;
2) With slow trailer with fixed drawbar.
It is possible to change from a configuration for fixed installation
to mobile and vice versa.
2.2 COMPOSITION OF GENERATOR UNIT
The generator unit is essentially composed of the following
components.
A - Fixed frame
B - Openable cowling engine side
C - Openable cowling alternator side
D - Instrument and sockets panel
E - Fuel tank cap
F - Hook lifting
G - Handle
H - Support
I - Wheel
L - Air inlet
2.3 INSTRUMENT PANEL
Each generator is fitted with an instrument panel for commands
and controls with the following components.
1 - Ignition key
2 - Hour counter
3 - Voltmeter
4 - Ground connector
5 - Emergency stop button
6 - Magnetothermal differential switch
(GENERAL SWITCH 1-2)
7 - Magnetothermal switch 3P,16A (SWITCH 1)
8 - Magnetothermal switch 1P,16A (SWITCH 2)
9 - Single-phase outlet, EC 230V,16A 2P+GND (SOCKET 2)
10 - Single-phase outlet, EC 230V,16A 2P+GND (SOCKET 1)
only on PD 50 S.
Single-phase outlet, EC 230V,32A 2P+GND (SOCKET 1)
only on PD 70 S.
11 - Three-phase outlet, EC 400V,16A 3P+T+GND (SOCKET 1)

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L2
L1
L3
N
MAX 1F 1/3
MAX 1F 1/3
M
AX
1F 1/3
2.4 TABLE OF TECHNICAL CHARACTERISTICS
Environmental conditions of reference according to norm UNI EN ISO 3046/1:
Temperature 25°C, Pressure 1000 mbars, relative damp 30%.
The values of voltage stability are correct with balanced loads. Using
unbalanced loads can cause variations of voltage and serious
damages to the connected equipment.
MAX POWER 3,4 5 6,3 / kVA
CONTINUOUS POWER 3 4,4 5,5 3,5 kVA
POWER FACTOR (Cos Φ)11 0,8 1,0
THREEPHASE VOLTAGE / / 400 /
V
SINGLEPHASE VOLTAGE / 230
V
RATED FREQUENC
Y
Hz
GRADE OF PROTECTION 0
MAX TEMP. OF USE °C
MIN TEMP. OF USE °C
MAX ALTITUDE OF USE m
Lmm
DIMENSIONS W mm
Hmm
MASS 125 / 145* kg
TYPE
MANUFACTER
MODEL L70 AE
DISPLACEMENT 296 cm
3
POWER 6,1 - 4,5 CV - kW
n° OF CYLINDERS
RATED SPEED rpm
SPEED CONTROL
INDUCTION SYSTEM
FUEL
INJECTION SYSTEM
FUEL TANK CAPACITY L
FULL LOAD CONSUMPTION 1,3 L/h
COOLING
LUBRIFICATION SYSTEM
OIL SUMP CAPACITY 1,1 L
ELECTRIC PLANT
V
STARTING MOTOR
V
- kW
STARTING BATTER
Y
V
- Ah
BATTERY CHARGER
V
-
A
STOPPING SYSTEM
TYPE
ISOLATION CLASS
VOLTAGE REGULATOR COMPOUND
VOLTAGE STABILIT
Y
FREQUENCY STABILITY
COOLING
MODEL
±10%
±5%
CAPACITOR
GENERAL FEATURES
ALTERNATOR
ENGINE
L100AE
1
PD 70 S
406
IP 23
+40
-5
1000
815 / 1110*
2,1
3000
MECHANICAL CENTRIFUG
8,8 - 6,56
SYNCHRONOUS, 2 POLES, SELFREGULATE
D
H
A
IR
12 - 45
12 - 15
ELECTRO-VALVE SOLENOID
PD 50 S PD 7/4 S
230
50
560 / 810*
730 / 810*
4 STROKE
YANMAR
125 / 145*
NATURAL
DIESEL
DIRECT
10,5
AIR
FORCED
12
12 - 0,8
1,6

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GB 2.5 NOISE EMISSION
The values listed are emission levels and not necessarily
safeoperatinglevels.Althoughthereisacorrelationbetween
emissionandexposurelevels,thiscannotbereliablyused
toestablishwhetherornotfurtherprecautionsarerequired.
Amongthefactorswhichaffecttheeffectivelevelofexposure
of the workforce are the characteristics of the workplace,
other sources of noise, such as the number of machines
andother adjacentprocesses, andthetimeanoperator is
exposed to the noise. Moreover, the permitted exposure
levelsmayvaryfrom countryto country.Nonetheless, this
informationallowsthemachineusertobetterevaluatethe
dangerandrisk.
Guaranteed acoustic power level L
WA 96 97 97
dB(A
)
Acoustic pressure level at the operator
station L
pA 83 84 84
dB(A
)
MODEL PD 50 S PD 70 S PD 7/4 S
in accordance with Directive 98/37/EC
The measurements were made with the generator running and in accordance with Directive 98/37/EC.
in accordance with Directive 2000/14/EC
The measurements were made with the generator running and in accordance with Directive 2000/14/EC, and regarding the place of testing, the
measuring conditions and the instruments in accordance with ISO 3744 of 1995. Measurement uncertainty values: +1dB.

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3 INSTALLATION
3.1 GENERAL INSTALLATION CRITERIA
The installation of one or more Generating Sets must be
designed by specialised engineers qualified for the
design of this type of plant. The installation must be
carried out by qualified organisations employing
specialised personnel and using suitable equipment.
The systems must be installed in workmanlike manner
and upon completion the installer must issue the client
with a Declaration of Conformity of the systems installed
in accordance with the design specifications and the
specific standards.
3.2 IMPORTANT INFORMATIONS
3.2.1 INSPECTION OF MATERIALS
On receiving the set, it is advisable to check that the
materials correspond to that listed on the delivery note
accompanying the shipment. Some of the packages
may be opened at random to check that no damage has
occurred during transit. If damage is noted, the carrier
must be informed immediately to enable the relevant
claims procedure to be started.
3.2.2 SAFETY STANDARDS FOR DIESEL ENGINES
The location and installation of the generating set
(foundations, fuel tank, air intake, gas exhaust) must
comply with the “Safety Standards” in force in the
country of installation.
3.2.3 FOUNDATIONS (BASE VERSION)
The foundations must be calculated and designed by
civil engineers, taking maximum care to avoid the
transmission of vibrations and noise to other parts of the
structure.
3.3 EXHAUST PLANT
3.3.1 EXHAUST PIPE
The exhaust pipe must convey the exhaust gas to a zone
where it will not cause damage or harm, and away from
doors, windows and air intakes.
The outlet must be provided with a fixed protection to
prevent the ingress of rainwater.
Sections of pipes passing through walls must be insulated
to prevent the transmission of heat to the walls
themselves.
In the figure below there are some details illustrated
about the mentioned matter.
3.3.2 EXHAUST PIPE DESIGN
Theback pressure onthe engine exhaustgreatly influences
the power delivered by the engine and its thermal load.
Any excessive back pressure (measured on the outlet side
of the exhaust manifold for induction engines and on the
turbine outlet side for turbocharged engines) causes a
decrease in power, an increase in the temperature of the
exhaustgases,producessmoke,increasesfuelconsumption
and superheats the cooling water, with subsequent
deterioration in the lubricant and consequences for other
engineparts.
The pipelines should be as short as possible and with a
minimun number of bends.

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GB
3.4 VENTILATION
Ventilationof theroom inwhichthe generatingset isinstalled
isoffundamentalimportancefortheproper operation of the
set itself.
3.5 FUEL SYSTEM
The standard Generating Sets normally supplied by MASE
are fitted with a complete fuel system from the engine to the
standard fuel tank incorporated in the base of the unit.
3.6 ELECTRICAL CONNECTION
Theelectrical connection must becarriedout exclusivelyby
a specialised technician according to EN 60 204.1 (IEC
204.01)regulations
Thegeneratingsetsaresuppliedalreadyset-upforconnection
to the user.
The function of the generating set is to substitute the mains
electricity supply, and as such, must be considered as an
externalsourceof energy.Intheexecutionoftheconnections
must be respected the suitable connections in the wiring
diagram furnished with the group.
3.6.1 POWER CABLE SIZES
The choice and size of cables to use is the responsibility
of the plant installer.
It should be emphasised that using smaller sections
than that recommended will cause excessive voltage
drops and lead to dangerous overheating of the wiring.
3.6.2 POWER CABLE LAYNG
All set-user connecting cables on manual sets must be
laid in suitable channels or ducts.
3.6.3 EARTHING
Metal parts of the plant with which people can come into
physical contact and which, due to an insulation fault or
other reasons, may become live, must be connected to
an earthing system.
The generating’sets mounted on bases and control
panels are equipped with an earth terminal.
The sizing of the earth wires to the earthing system and
the relative contact resistance must comply with current
laws and standards.
N.B.: The earthing system must be located as far as
possible from railway/tram lines in order to prevent
electro-corrosion of the internal components of the
engine in contact with water.
Do not tamper with the active protections, thermal
switches and differential magnetothermal switches.
• In the event of malfunctioning, do not remove the
panel to attempt repairing it. Contact Mase
specialised personnel.
• Take the necessary precautions to prevent the
danger of electrocution; check that the earthing
system has been installed and constructed in
accordance with regulations.
• For the safety of the users, the earth connection of
the generator must always be carried out paying
particular attention to the cable cross-section used.
For the connection of the earth cable use the
dedicated terminal on the generator.
The manufacturer is not responsible for any damage
caused by failure to earth the system.

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GB
List
1 - Painted plate case
2 - Control panel
3 - Foundation
4 - Cables duct
5 - Exhaust gas pipe
6 - Protection metallic net
3.7 OUTDOOR INSTALLATION
For units in outdoor installations, it is advisable to ensure a position that provides maximum protection against
atmospheric agents, powder, etc.
Avoid direct exposure to sunlight that would otherwise cause abnormal heating of the system.
It is advisable to protect the system with shed roof.
For temporary or short-term installations, the unit may simply be placed on a flat surface.
For permanent or long-term installations, it is advisable to prepare a concrete foundation.
The area where the power set is installed must be suitably fenced off in order to prevent access by
unauthorized persons.
No admittance and Hazard signs must be installed as required by current legislation.
Outdoor installation

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GB
GB 3.8 INSIDE INSTALLATION
Correct indoor installation of the system must observe the following installation requirements:
- The site must be adequately dimensioned in order to allow correct operation of the group as well as easy access
for routine maintenance operations and eventual repairs. The figure shows the minimum recommended
dimensions for clearance around the system and the height of the site.
- Access to the site must allow the introduction of the complete system using standard transport and handling
devices available in the premises.
- There must be apertures of adequate dimensions to ensure continual and efficient recirculation of air.
- Installation of exhaust piping to the exterior of limited length and the fewest possible number of curves is
compulsory.
- The system may be arranged with sufficient passage space on at least three sides, provided that easy access
and observance of safety regulations are maintained.
- The control panel (for automatic sets) must be positioned so that the instruments are clearly visible to the
operator working near the system (for example, see figure below).
List
1 - Painted plate case
2 - Control panel
3 - Foundation
4 - Cables duct
5 - Air intake
6 - Exhaust gas pipe
7 - Air outlet with fan
Indoor installation