Robin RGV7500 User manual
ISSUE EMD-GS1494
R
Model
RGV7500
CONTENTS
Section Title Page
1. SPECIFICATIONS....................................................................................................... 1
2. PERFOMANCE CURVES ........................................................................................... 2
3. FEATURES..................................................................................................................3
3-1 A.V.R. ALTERNATOR ............................................................................................ 3
3-2 OIL SENSOR ........................................................................................................3
3-3 QUIET OPERATION ............................................................................................. 3
3-4 NO RADIO NOISE ................................................................................................ 3
3-5 LARGE FUEL TANK..............................................................................................3
3-6 RUGGED TUBULAR FRAME ...............................................................................3
3-7 MINIMAL MAINTENANCE ....................................................................................3
3-8 LONG-LIFE DURABILITY ..................................................................................... 3
4. GENERAL DESCRIPTION.......................................................................................... 4
4-1 EXTERNAL VIEW .................................................................................................4
4-2 CONTROL PANEL ................................................................................................ 5
4-3 LOCATION of SERIAL NUMBER and SPECIFICATION NUMBER...................... 6
5. CONSTRUCTION AND FUNCTION ........................................................................... 7
5-1CONSTRUCTION ..................................................................................................7
5-2 FUNCTION............................................................................................................ 7
5-3 DESCRIPTION of GENERATOR OPERATION .................................................. 11
5-4 OIL SENSOR ......................................................................................................14
6. SAFETY PRECAUTIONS ......................................................................................... 17
7. RANGE OF APPLICATIONS ....................................................................................18
8. MEASURING PROCEDURES .................................................................................. 21
8-1 MEASURING INSTRUMENTS ........................................................................... 21
8-2 AC OUTPUT MEASURING ................................................................................. 24
8-3 DC OUTPUT MEASURING.................................................................................24
8-4 MEASURING INSULATION RESISTANCE ........................................................ 25
9. CHECKING FUNCTIONAL MEMBERS.................................................................... 27
9-1 VOLTMETER.......................................................................................................27
9-2 AC RECEPTACLES ............................................................................................ 27
9-3 No-FUSE BREAKER........................................................................................... 27
Section Title Page
9-4 STATOR ..............................................................................................................28
9-5 ROTOR ASSEMBLY ........................................................................................... 28
9-6 BRUSH................................................................................................................ 29
9-7 A.V.R. (AUTOMATIC VOLTAGE REGULATOR)..................................................29
9-8 DIODE RECTIFIER.............................................................................................31
9-9 OIL SENSOR ......................................................................................................32
9-10 EXCITING COIL................................................................................................32
10.DISASSEMBLY AND ASSEMBLY ........................................................................... 33
10-1PREPARATION and PRECAUTIONS ................................................................33
10-2 DISASSEMBLY PROCEDURES.......................................................................34
10-3 ASSEMBLY PROCEDURES ............................................................................. 42
10-4 CHECKING, DISASSEMBLY and REASSEMBLY of the FRONT PANEL ........ 48
11. TROUBLESHOOTING ............................................................................................ 50
11-1 NO AC OUTPUT................................................................................................50
11-2 AC VOLTAGE IS TOO HIGH OR TOO LOW..................................................... 51
11-3 AC VOLTAGE IS NORMALAT NO-LOAD,
BUT THE LOAD CANNOT BE APPLIED.....................................52
11-4 NO DC OUTPUT ...............................................................................................53
12. WIRING DIAGRAM .................................................................................................54
NOTE : As for the servicing information on engine protion, please refer to the EH41 engine
service manual.
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1
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1. SPECIFICATIONS
* Electric starter motor is available as option.
Engine Alternator
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2
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DC OUTPUT
DC Voltage................. 12 V
DC Ampere ................ 8.3 A
DC output................... 100 W
The voltage curve shown in the left indicates the characteristic of DC output when charging a battery.
The voltage may be decreased by 20% when the resistance load is applied.
NOTE : It is possible to use both DC and AC outputs simultaneously up to the rated output in total.
2. PERFOMANCE CURVES
Hz
(Hz)
(V)
(125)
63
250
(120)
240
(115)
230
(110)
220
62
61
60
60Hz
0 1/2 4/4
Load Rated
240V/120V
Hz
(Hz)
(V)
(120)
53
240
(125)
250
(115)
230
(110)
220
(105)
210
52
51
50
50Hz
0 1/2 4/4
Load Rated
220V/110V
240V
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3
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3. FEATURES
3-1 AVR ALTERNATOR
Output votage becomes more stable due to A.V.R. system and water proof (1P23 level) / brush type
alternator ensures trouble free operation.
3-2 OIL SENSOR
Oil sensor automatically shuts off the engine whenever the oil level falls down below the lower limit to
protect the engine from seizure.
3-3 QUIET OPERATION
Robin RGV7500 generator delivers a quiet operation with :
* High performance 4-stroke Robin OHV engine.
* Extra large muffler and large air cleaner provide remakable quiet operation.
3-4 NO RADIO NOISE
Noise suppressor spark plug is equipped standard to prevent radio frequency interference.
3-5 LARGE FUEL TANK
Extra large fuel tank (27.5 L) allows more than 9 hours/ 50 Hz (7 hours/ 60 Hz) of continuous operation
which is sufficient for a half day or one day work without refueling.
3-6 RUGGED TUBULAR FRAME
Full cradle type rugged tubuler frame protects the generator all around.
3-7 MINIMAL MAINTENANCE
* A drip-proof alternator design.
* No-fuse circuit breakers.
* An electronic pointless ignition system.
3-8 LONG-LIFE DURABILITY
The heavy-duty 4 stroke Robin OHV engine :
* Full rubber mount in a sturdy tubular frame.
* A forged carbon steel crankshaft supported by two main ball bearings.
* A pointless electronic ignition system.
* A special cast-iron cylinder liner.
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4
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4. GENERAL DESCRIPTION
4-1 EXTERNAL VIEW
TANK CAPFUEL STRAINER
(FUEL COCK)
CHOKE LEVER
SPARK PLUG
CAP
MUFFLER
COVER
RECOIL STARTER
EARTH
(GROUND)
TERMINAL
EXHAUST
OUTLET
OIL GAUGE (OIL FILLER)
OIL SENSOROIL DRAIN PLUG
FUEL GAUGE
FRAME
AIR CLEANER
FUEL TANK
CONTROL
PANEL
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5
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4-2 CONTROL PANEL
PILOT LAMPVOLTMETER
AC RECEPTACLE
KEY SWITCH
(ELECTRIC
STARTER TYPE)
ENGINE SWITCH
(RECOIL STARTER TYPE) DC CIRCUIT BREAKER
DC OUTPUT
TERMINAL
NO-FUSE BREAKER
PILOT LAMP
AC RECEPTACLE
DC CIRCUIT BREAKER
DC OUTPUT
TERMINAL
NO-FUSE BREAKER
VOLTMETER
KEY SWITCH
(ELECTRIC
STARTER TYPE)
ENGINE SWITCH
(RECOIL STARTER TYPE)
* 50Hz-110V, 60Hz-110V, 60Hz-120V
* 50Hz-220V, 230V, 240V, 60Hz-220V
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6
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PILOT LAMP
FULL POWER
SWITCH
VOLTMETER
AC RECEPTACLE
KEY SWITCH
(ELECTRIC
STARTER TYPE)
ENGINE SWITCH
(RECOIL STARTER TYPE) DC CIRCUIT BREAKER
DC OUTPUT
TERMINAL
NO-FUSE BREAKER
4-3 LOCATION of SERIAL NUMBER and SPECIFICATION NUMBER
Serial number and specification number are stamped on the LABEL (MODEL NAME) stuck on the side
wall of rear cover.
NOTE : Always specify these numbers when inquiring about the generator or ordering spare parts in
order to get correct parts and accurate service.
LABEL, MODEL NAME
* 50Hz, 60Hz-110/220V, 60Hz-120/240V
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7
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5. CONSTRUCTION AND FUNCTION
5-1 CONSTRUCTION
5-2 FUNCTION
5-2-1 STATOR
The stator consists of a laminated silicon steel
sheet core, a main coil and a condenser coil which
are wound in the core slots.
The condenser coil excites the rotor field coil which
generates AC voltage in the main coil.
Fig. 5-2
Fig. 5-1
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MOUNT RUBBER BALL BEARING TROUGH BOLT FRONT COVER
REAR COVER ROTOR COMPLETE
STATOR COMPLETE
STATOR BOLT
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BRUSH HOLDER
SLIP LING
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