Mase IS. 2.5 Instruction manual

masemase masemase
mase
GENERATORS
WORKSHOP MANUAL
IS. 2.5 50 Hz

IS 2.5
2
Index
1 Machine identification........................5
1.1 Generatorscomposition .......................... 5
2 TOOLTABLE .......................................... 9
3 ALTERNATOR ..................................... 13
3.1 Stator.................................................... 15
3.1.1 Powerwindings..................................... 15
3.1.2 Excitation windings ............................... 17
3.1.3 Alternator thermostat ............................ 17
3.1.4 Battery charger windings ................ 19
3.2 Rotor ..................................................... 21
3.2.1 Rotorwinding(n°2) ............................... 21
3.2.2 Rotor diodes (n°2) ................................. 23
3.2.3 Rotor varistors (n°2) ............................ 23
3.3 Capacitors ............................................ 25
4 ENGINE ................................................ 27
4.1 Technical features ................................. 25
4.2 Maintenance ......................................... 28
4.3 Trouble-shooting ................................... 30
4.4 Fuel ...................................................... 35
4.5 Electric diesel fuel pump ...................... 37
4.6 Lubrication ............................................ 39
5 SENSORS ............................................ 41
5.1 Closed-circuit engine thermal switch .... 41
5.2 Open-circuit engine thermostat (sea) .... 43
5.3 Oil pressure switch ............................... 45
6 SEA WATER COOLING ....................... 47
6.1 Seawater/closed-circuit system ............ 47
6.2 Water pump .......................................... 49
6.3 Water pump belt ................................... 51
6.4 Water/air heat exchanger ...................... 53
7 ADJUSTMENTS ................................... 55
7.1 Rpm adjustment ................................... 55
7.2 Closing cover motor............................. 57
7.3 Engine air filter cleaning ...................... 59
7.4 Level oil check ..................................... 61
7.5 Engine oil filter cleaning ...................... 61
8 ELECTRICAL SYSTEM ........................ 63
8.1 Command circuit .................................. 63
8.1.1 Multicore cable ..................................... 69
8.2 Stop solenoid........................................ 71
8.3 Thermal switch (ACcircuit breaker) ........... 73
8.4 Enginewiring ........................................ 75
8.5 Battery charger ..................................... 77
8.6 Fuse ..................................................... 79
8.7 Starter motor ........................................ 81
8.8 Battery .................................................. 83
9 DISASSEMBLY .................................... 85
9.1 Removing the casing ............................. 85
9.2 Removingthe alternator ........................ 89
9.3 Removingthealternatorcover
on the bearing side ............................... 91
9.4 Removing the stator .............................. 93
9.5 Removing the rotor ................................ 95
9.6 Removingtherotor bearing ................... 95

IS 2.5
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I
SCREW SHUT ..................................... 95
SPARE PARTS .................................... 96
ENGINE-ALTERNATOR...................... 96
FRAME ................................................ 98
WIRING DIAGRAM ............................... 101

IS 2.5
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1
1
2
3
5
6
7
8
9
4
10
SERIAL No.
2
1
3
5
4
6
7

IS 2.5
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1 Machine identification
(Fig.1)
1 - Manufacturer
2 - Machine code
3 - Year of construction
4 - Power factor
5 - Declared frequency
6 - Continuous power
7 - Rated voltage
8 - Rated current
9 - Weight
10 - Serial number
The machine code number, the serial number
and the year of construction must always be
quoted when contacting the manufacturer for
information, requests for spare parts, etc.
1.1 Generators composition
The generators are essentially composed of
the following components (Fig.1-2):
1- Soundproof casing
2- Top access door
3- Motor side access door
4- Anchoring brackets
5- Exhaust and cooling water pipe fitting
6- Seawater intake connection pipe fitting
7- Connection pipe fittings to fuel tank

IS 2.5
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2
12
8A
11
9
19
18
21
16
14 13
15
10
20
8B
17
23
22

IS 2.5
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8A-Connection to battery +
8B-Connection to battery -
9- RPM adjusting screw of engine
10- Engine air filter
11- Staff oil level
12- Seawater pump
13- Fuel pump
14- Oil filter cartridge
15- Oil fillercap
16- Electric line connection box
17- Battery charger regolator
18- Water/air heat exchanger
19- Exhaust manifold
20- Starter motor
21- Remote control panel connector
22- Capacitor
23- Fuse

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3

IS 2.5
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2 TOOL TABLE
Denomination: Torque spanner
Use: To tighten the nuts and bolts to the
prescribed torque
Denomination: Battery tester
Use: To check the electrolyte level of the battery
Denomination: Digital thermometer
Use: Measures the temperature of the
components
Denomination: Contact tachometer
Use: Measures the rpm of the rotary shaft by
bringing the indicator tip in contact with the
central hole of the shaft.
Denomination: Photocell tachometer
Use: Allows measuring the rpm of the rotary
shaft when it is in uncomfortable positions,
holding the tachometer at a certain distance.
Denomination: Terminal tachometer for high-
pressure fuel pipe
Use: Measures the engine rpm using a pulse
system not taking into account the centre of the
rotary shaft and the circumference of the rotating
object.

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