Generetors Conposition; Instrument Panel; Generator Caracteristic; General Caracteristic - Mase Generators MARINE I.S. 21.5 Manual Uso Y Mantenimento

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1.7 Generetors conposition

See Fig.3
The generators are essentially composed of the
following components:
1- Soundproof casing
2- Top access door
3- Side access door

4- Instrument panel

5- Anchoring brackets
6- Exhaust and cooling water pipe fitting
7- Seawater intake connection pipe fitting
8- Connection pipe fittings to fuel tank
9- Connection terminals to battery
10- Engine air filter
11- Coolant expansion tank
12- Engine oil extraction pump
13- Diesel fuel filter cartridge
14- Seawater pump
15- Fuel pump
16- Oil filter cartridge
17- Oil fillercap
18- Electric line connection box
19- Battery charger alternator
20- Collector cooled to water
21- Water/air heat exchanger
22- Exhaust manifold
23- Starter motor
24- Remote control panel connector
25- RPM adjusting screw of engine
26- Water/Air intercooler
1.8 Instrument panel
See Fig.4
Each generators is fitted with an instrument panel for
the controls with the following components
1- Hour counter
2- Magnetothermal switch
3- DC current thermal switch
4- START/STOP-Preheat button
5- Engine protection module
6- "RUN" light – engine running
7- "OIL" light – low oil pressure
8- "ºC" light – high engine temperature
9- "BATT" light – battery charger operating
10- "ºC" light – high alternator temperature
11- Preheat ligh - (not present)
12- Fuel leak (version "RINA")
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2. GENERATOR CARACTERISTIC

2.1 General caracteristic

The IS generators were designed for easy installation on
boats.
The soundproof casing, obtained with insulated, painted
marine aluminium panels, allows easy access to the
engine and the alternator for maintenance and inspection
operations, and at the same time strongly reduces noise.
The 4-stroke, direct-injection, diesel engine, built by
Yanmar, is extremely reliable and robust. Exhaust emis-
sion is in conformity with CARB regulations.
The synchronous-type, 4-pole, brushless alternator has
an electronic voltage regulator (SR7) which guarantees
stability to + 5% with respect to the nominal value. The
high pickup capacity of the alternator makes the genera-
tor particularly suitable for the power supply of electric
motors of air conditioners, desalination plants, compres-
sors, etc.
The generator has a local control panel [Fig. 3 Ref. 4] on
which the controls and control instruments are housed.

2.2 Cooling system

The generator engine is cooled by closed-circuit circula-
tion of coolant which yields heat to the seawater by
means of a heat exchanger [Fig. 3, Ref. 26].
This heat exchanger was specially designed by mase
to make the engine suitable for use at sea.
A second heat exchanger cools the air inside the
soundproof casing and the air necessary for alternator
ventilation.
At the time of installation a seawater feed circuit for
cooling must be installed and an exhaust system to
convey the combustion gas and the water used for
cooling to the outside, as indicate in the installation
manual.

2.3 Control panel

A control panel is positioned on the generator for running
checks and to start and stop the generator. An engine
protection module [Fig. 4 Ref. 5] controls the generator
protections, stopping the engine in case of a fault and
signalling the fault detected by means of special warning
lights.
- Green "RUN" pilot light [Fig. 4 Ref. 6], when on,
indicates that the generator is running and no oper-
ating fault has been detected.
- Red "BATT" pilot light [Fig. 4 Ref. 9), when on,
indicates that the alternator battery charger is faulty.
- Red "OIL" pilot light [Fig. 4 Ref. 7], when on, indi-
cates that the engine oil pressure is insufficient.
- Red [Fig. 4 Ref. 10] pilot light, when on, indicates
that the temperature of the coolant or the water
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IS 21.5-23.5