Generator
Model
RGX305,305D
RGX405,405D
RGX505,505
D
Technical Data& OverhaulInstructions
CONTENTS
Title
Section
Page
1. SPECIFICATIONS
..........................................
1
2. PERFORMANCE
2-1 Model
2-2 Model
2-3 Model
2-4 Model
2-5 Model
2-6 Model
...........................................
RGX305 ......................................
RGX305D .....................................
RGX405 ......................................
RGX405D .....................................
RGX505 ......................................
RGX505D .....................................
3
3
4
5
6
7
8
9
..............................................
3. FEATURES
........................
4. GENERAL DESCRIPTION of GENERATOR
4 - 1 External View of Generator ..............................
4-2
Panel A ............................................
4-3
Panel B ............................................
11
11
12
13
...............................
5. CONSTRUCTION
and FUNCTION
........................................
5-1 Construction
5-2
Function ...........................................
5-3 Description of Generator Operation .........................
5-4 Change of Engine Parts .................................
14
14
15
21
25
6. SAFETY
PRECAUTION
......................................
28
...........................
29
...................................
8. MEASURING
PROCEDURE
8-1 Meters ............................................
8-2 AC Output Measuring ..................................
8-3 DC Output Measuring ..................................
Insulation Resistance Measuring ...........................
8-4
32
32
34
34
34
...........................
9. CHECKING FUNCTIONAL
MEMBERS.
9 - 1 Stator Assembly ......................................
Rotor Assembly ......................................
9-2
Brushes. ...........................................
9-3
9-4 AVR (Automatic Voltage Regulator) ........................
9-5 No-Fuse Breaker and Fuse Holder ..........................
Receptacle and AC Plug .................................
9-6
.........................................
9-7 Voltmeters
Diode Stack Assembly ..................................
9-8
................................
9-9 Primary Exciting Circuit
36
36
37
38
38
40
41
41
41
42
7. APPLICABLE
RANGE of GENERATOR
..............................
10. DISASSEMBLY
and REASSEMBLY
10 - 1 Preparations and Suggestions .............................
How to Disassemble ...................................
10-2
How to Reassemble. ...................................
10-3
10-4 Control Box Disassembly and Reassembly .....................
11. TROUBLE-SHOOTING
12. OPTlON
12 - 1
12-2
13. CIRCUIT
.......................................
.................................................
Electric Starter. ......................................
Caster .............................................
DIAGRAM
........................................
43
43
43
51
58
59
63
63
68
69
Model
.-
-
_-
Type
_--.. .-
.T
Frequency
RGX305
_-..
---
-.
60Hr
_.-.
3400w
2900w
_-.
Self-Exciting,
.- _ __
50Hz
.__ _
-
P-pole,
.--
50Hr
._ ._-
3ooow
2500W
- -..
RGX405
--
_- --__.
Revolving-Field,
-..
-_... _-
50Hz
.-__
__
3ooow
2500W
RGX305D
._
_
.-.... - __.-.
__--
Single Phase
--
- _-.-.
.-
.._
-,-
Model
- -__-,
Factor
-.
-
-.
.-
-
.
_--
_._-_,.
..-
_
-
_
._-.
-
--
-
-
.-_
-
-
._
-...-
-. - . _.
Air-Cooled,
-_. _-
____.
16 Liters
--..
__-
661 mm (22.1
_--
in)
-
62 kg (137
Ibs)
-_.
..-
.
-
-
.-..
Starter
--
,..
..-_..
_.
(4.2 U.S. gall
_ ..-.
___
_
_
_._-.
_
__ _.
__
-
-
_
..-.
.
___. . .-
__---
_..---
Optional)
2.2 LiterslHr
(2.6 pints)
- _
-...
.--.
2.6 LiterslHr
596 mm (23.5
73.5
in)
..-._
._.-
.--..
-
486 mm (19.1 in)
..--. -.
-
.-
..-.
- _..-f50Hz).
.
. .._---
.-1.2 liters
_ _-_
.-
__-_
----
706 mm 127.8 in)
_.-. .-
15.4A
--
._._.
I _-
Starter
_-
cu. in)
-.
8.5HP13600
rpm
_-.. . ._.
.---.
.
/
_.
.-.
-.
--. ---_- 7
334 cc (20.39
.-
16.8A
,--.
30.8A
/ 240V
13.8A
/
/
120v
_-
_._
.._
27.5A
I----
53.6A
/ 22OV
._--.-
EY35DIWl-340)”
_. -___..
-
Gasoline
-. _ .-_.
(Electric
_-
1lOV
15.OA
/
/ 240V
-
-.
50Hz-3000
rpm, 6OHr-3600
rpm
._.,
._-__, .-.
---.,
Robin Solid State Ignition
Svstem
_..-__
.--.__
.-.
in)
7.Automobile
-_
--.
..-.
.1.7 Liters/Hr
f50Hz),
1.9 Liters
_-.
_.-.. I
-_
681 mm (26.8 in)
.__.. _.._. ___
. . ..-
-
220v
.-
.---
_--_-,.,
.--
466 mm (18.3
.-.
. I.
.-.
30.OA
12ov
Gasoline Engine
~._
_--
,... _-
-
-_
-.
..-
4.Cycle
__ ---
Recoil
_-..
(60HzJ
_
.- .
.--..
-
Liter (1.8 pints)
_- .-.
.-
_ .-_
-.
.--
. .-
.-
__,._-.
-- --_
.-
.--.
._-.,
_.
-
252 cc (15.40 cu. in)
_-.
7HPl4000
rpm
___-
0.85
13.8A
1
AVR (Automatic
Voltage Regulator)
_-. ._
-.
._--_. _-.
Within 3%
.-_
_-
I
--
.,-_.I---’
I --
1 .o
-8.3A 1OOW
..-.
-, .,
- _..
12V
_-
EY25-2D(EY26-WI”
-.
._.
-
. _._
Ratio
..-.
-
.-..
._
__ _.
.--
Irry Weight
--
--._
Fuel Tank Capacity
-.
._.
System
_____ _
Fuel Consumption
.-
-
..-
..-
-..-
--
Oil Capacity
,,.. .- . - ._.Revolutions/min
_
._. lgntition
System
_....-
...- .-
-A
Robin
_.
_.-
--.-
.-
240V
_
._
.-
.-.
._
2oZA
- ._
..-
_..-.
_-.
.-
. --
_
.-
..-_
-.
Displacement
_ .Max. Output
-.
-_,
Fuel
_
-__.
Starting
‘Z
--
i
I.
Voltage Regulator
--Voltage Regulation
--. . .,. ._-
Tw
-..
ii
G
LW
/
‘XA
.-
Power
.-.-_.
DC output
- _---.
-.
Z
.-..
24.2A
-
.._-
_
1lOV
26.4A
.-._
5
2
E
;
-
50Hz
- .-4ooow
3300w
-.-4400w
3700w
.._. .
RGX406D
-.
__-.- -
60HZ
4ooow
3300w
-
~--
_- .
f60Hz)
..-.-
._---
___.. .___. -..
-._
-
_.
.--..
--_
..
_-.
. ..
_-.
kg (162 Ibs.)
“For U.S.A. and Canadian markets
Model
.
RGX505D
RGXSOB
--
I
I
Type
Revolving-Field,
,._._- - -_ _ -_
Max.
Rated
___,_
Self Exciting,
.--_
50Hz
6OHZ
5ooOW
4400w
5500w
4800W
2-pole,
Single Phase
_--
1oov
5
t
2
5
c)
/ 220v
-120
-_-----.
--_._.
_--.----_
/ 240V
..
I Power
Factor
DC Output
- .-.__---...--
I
h)
I
-
--
Voltage
Regulator
Voltage
Regulation
-.-
1 .o
I
-. -_-_
-
_.- .-__-
-~.
-
.----
-
.----
Type
-. - _ Model
-.
-
;
zw
-
--
- -
-
-._
Iimensions
-.
Dry Weight
-
._
Air-Cooled,
.---.-,
_.
.-,
-
1OOW
--_
-.
..-
4-Cycle
.-
__
Height
---_._-
-.---
--
.-
..-- .-._
Ratio
.-.-
.
-.. _-.--_._
(Wl-350);
.-.
-
._ ___ ,__ ,--.-
--__---
.-.
-,
-.-.-
.---.
____m
--
..-.
-
,.-
_
-._
__
_, _
rpm
_System
_-
- .___
._
__. _.
_-__
-._-
-- ._-
---_ _- .-
706 mm (27.8
_
Engine
_._____
(4.2 U.S. gal)
-.
.-
__
--_,
Recoil Starter (Electric
Starter Optional)
-... -..
.- .--.
---2.7 Liters/Hr
(5OHr). 3.1 LiterslHr
f60Hz)
-,
-
-___.__
__.___-
Gasoline
1.2 liters (2.6 pints)
__ _
.-.,----.
50Hz-.3000
rpm, 60Hz-3600
.
.
-.--.
Robein Solid State Ignition
- ---._
__-
__
Regulator)
-_-
388 cc (23.68 cu. in)
- ,..-..-lO.OHPl3600
rpm
--.----.
Automobile
Gasoline
.-.
..--16 liters
-._____
Length
-.
Width
-. - EY40D
.,... -
-.--
.-
Capacity
-.
8.3A
-
(Automatic
Voltage
-.-._.-_Within 3%
Robin
.--_-
.-,-.
Starting System
-. ,---.---Fuel Consumption
_-
-
-
Oil Capacity
--.
.__- . .-.
Revolutionlmin
.-- ___.
Ignition System
- -.
_
-
.---.. -
Fuel Tank
- -.-..
12V
---
Displacement
--.
Max. Output
_.--.
Fuel
.--.
AVR
-.
_
I--
-
in)
488 mm (19.1 in)
--_.-.-.--.
596 mm (23.5 in)
---77.5 kg (171 lb.?.)
,.
l Enr I I C A snrl Panarlisn
marLate
2. PERFORMANCE
2-l
OUTPUT
MODEL
Type
RGX305.
. . . . . . . . . . . . . . . Self Exciting,
2-Pole, Single Phase
Power Factor . . . . . . . . . . 1.O
Engine
. . . . . . . . . . . . . . EY25-2D(EY25WI*
Output
t
63
‘; 1;;62
60
2
59
3400W
Rated
2900W
Frequency
,t z 61
2
Max. ...............
..............
.................
Voltage ...................
60Hz
11ov
3
-- 2500
5
7
e
$20
;;llO
0’
.- 2000
%O
5
-.1500
:
12
16
20
CURRENT(A)
24
-
28
32
Output
Max. ...............
3000W
Rated
2500W
Frequency
..............
.................
Voltage ...................
1500
T
5OHZ
220v
t
:
1000
2
4
6
CURRENT(A)
8
-
10
12
14
Output
. . 3000
0’ NOTE:
I
4
6
CURRENT(A)-
8
10
Rated
2500W
..............
.................
..................
5OHZ
240V
These diagmms show the RGX305 characteristics
at
the main line frequencies and voltages. The characteristics
are similar to 6OHz 12OV, 5OHz 1 lOV, and 5OHz 230V.
+ 1000
2
3000W
Frequency
Voltage.
bOo
Max. ...............
*For U.S.A. and Canadian markets
12
-3-
MODEL
Type
RGX305D
...............
Self Exciting,
Power Factor ..........
1.O
Engine
EY25-2D
..............
OUTPUT(240V).
t
2-Pole, Single Phase
(EY25W)”
OUTPUT
(12OV1
Output
I
Max. ...............
3400W
Rated
2900W
..............
3000
Frequency
.................
6OHZ
Voltage ................
t2500
2230
t
iii
!T
I
k
1‘15002
ti
hO0
12OVl24OV
1: 2000
I
250
240
d630
> 120
-c 500
110
0
5
10
15
20
25
30
CURRENT(A)-
I
---I=
‘n, A,,
:rr&n\;\
I
(11OV)
Output
Max. . . . . . . . . . . . . . . . 3000W
Rated
I
I
. . . . . . . . . . . . . . 2500W
3000
Frequency
-,2500
. . . . . . . . . . . . . . . . .
5OHZ
Voltage . . . . . . . . . . . . . . . . 11 OV/22OV
t
/E
-,2000
2
5
0
1500
1
0
5
10
15
20
25
NOTE:
30
These diagrams show the RGX305D characteristics
at the main line frequencies and voltages The characteristics
CURRENT(A)-
are similar ro 6OHz 1 IOVB?OV,
6OHz 12OVR4OV.
“For U.S.A. and Canadian markets
- A-
MODEL
Type
RGX405
...............
Self Exciting,
2-Pole, Single Phase
Power Factor ..........
1.0
Engine
EY35D(Wl-340)*
..............
Output
?4500
Max. ...............
Rated
..............
44OOW
3700W
I
Frequency .................
60Hz
iNo”4
Voltage ...................
11ov
+4000
Output
I
120
ZllO
$00
2
G
CURRENT(A)
-
Max. ...............
Rated
13500
Frequency
..............
.................
Voltage ...................
4000W
3300W
50Hz
220v
I:3OOoj
I
<220-
w210-
j
,
I
g200*
i
i
I I/:
i
I
‘J
2
2
I/.
y
i
i’”
I
:
I
i
i
I
I
I
14
16
i
Y I
2
4
lo
6
8
CURRENT(A)-
12
1500
18
44000
Output
I
i 53
>0 2 52
Z5
51
g
50
a
u.
49
Max. ...............
4000W
Rated
3300W
Frequency
..............
.................
Voltage ...................
50Hz
240V
-240
f
2000
t
NOTE:
+ 1500
tie main line frequencies and voltages. The characteristics
mesa diagrams show tie RGX405 characteristics
are similar to 6OHz 12OV, 5OHz 1 lOV, and 5OHz 230 V.
2
4
6
8
10
12
14
16
18
*For U.S.A. and Canadian markets
CURRENT(A)-
-5-
at
MODEL
Type
RGX405D
...............
Self Exciting,
2-Pole, Single Phase
Power Factor ..........
1.0
Engine ..............
EY35D (Wl-340)’
Output
-62
Max. . ..............
4400W
Rated
3700w
Frequency.
61
..............
. . ..............
Voltage . . . . . ...........
60
6OHZ
12OV/24OV
59
s
i--i
f 240
250
3000
5
e
5:
z 230
0
2000
s
I
2
zJ 130
1000
t
120
i :
0
5
10
15
j
20
25
30
35
40
CURRENT(A)-
Output
Max. . . . . . . . . . . . . . . . 4000W
Rated
2
52
5
51
Frequency.
. . . . . . . . . . . . . . . .
5OHZ
Voltage . . . . . . . . . . . . . . . . 11 OVl22OV
$50
49
0
1230
I
220
-2
2
. . . . . . . . . . . . . . 3300W
2
7
I
5
2m
0
t
NOTE:
These diagrams show the RGX405D
characteristi
at the main line frequencies and voltages. The characterisri
CURRENT(A)-
ara similar to 6OHz I lOVR2OV,
“For U.S.A. and Canadian markets
-6-
5OHz 12OVR4OV.
MODEL
Type
RGX505
...............
Self Exciting,
2-Pole, Single Phase
Power Factor ..........
1.0
Engine
EY40D(Wl-390)”
..............
I
;;
E
>
Output
I
5000
t
62
6’
Max. ...............
5500W
Rated
4800W
Frequency
+3
-~I
p
a
..3000
..............
. . . . . . . . . . . . . . . . .
60Hz
Voltage . . . . . . . . . . . . . . . . . . .
1lOV
Iz
5
L
k
t 110
120
F
;;;lOO
;;;loo
0
2
i I
1 ]
0
11
10
!
20
i
30
CURRENT(A)
40
50
-
Output
-5000
Max. . . . . . . . . . . . . . . . 5000W
Rated
Frequency
. . . . . . . . . . . . . . 4400W
. . . . . . . . . . . . . . . . .
Voltage . . . . . . . . _ . . . . . . . . . .
::I
3000
I , / ,I ’ ’
230 1 t i/ ’ --V_OLTAGE
(
1
220
I
,<
!
5OHZ
220v
s:
5
e
e.2000
2
7
:
‘1000
t
0
5
15
20
25
CURRENT(AI-
A
;
3
t
10
Output
53
52
2”
2
0
51
g
u.
49
Max. ...............
5000W
Rated
4400W
Frequency
..............
.................
5OHZ
Voltage ...................
240V
50
1 250
5240
‘3
13 230
1000
I
2
NOTE:
These diagmms show the RGX505 characteristics
the main line frequencies
and voltages
me characteristics
are similar to 6OHz 12OV, 5OHz 7 lOV, and 5OHz 23OV.
0
5
10
CURRENT(A)-
15
20
25
*For U.S.A. and Canadian markets
at
MODEL
Type
RGX505D
...............
Self Exciting,
2-Pole, Single Phase
Power Factor ..........
1.0
Engine
EY40D (Wl-390)*
..............
Output
t sak,l~rl?rv%!-kUT-I
11
i
Rated
...............
5500W
..............
48OOw
Frequency .................
15000
I
VI>
Max.
Voltage ................
60Hz
12OVl24OV
f4000
bo00
.-240
-*2000
z 230
;
2
130
g
120
-~looo
110
10
0
20
30
CURRENT(A)
40
-
Output
Max.
Rated
Frequency
t
z
220
..............
4400W
.................
5OHZ
5000
Voltage ................
2000
210
ti
2 120
11 OVl22OV
0’
1000
t
$110
100
5000W
ti3000
I25
“c
]
230
t
...............
i/I
a.11
III”’
10
NOTE:
;i:i
ijII
0
I
20
CURRENT
30
40
These diagmms show tie RGX505D
characteristics
at tie main line frequencies and voltages. The characteristics
50
are similar to 6OHz 1 lOVL22OV, 5OHz 12OVR4OV.
(A) -
“For U.S.A. and Canadian markets
-8-
3.
1.
FEATURES
Lightweight, Compact
The Robin engine and revolving field generator designs provide added output power per weight and economical operation.
2.
Centralized Control
The switches, meters, and receptacles are located together on a large-sized control box, and all operating controls are
located on top of the engine for easy generator operation.
3.
Large 16-Liter Gas Tank
* 16-liter (4.2-gallon) fuel tank is provided for ten hours of operation for Model RGX305 or seven hours for Model
RGX405. (at the 50Hz rated output power)
*RGX505 can operate for six hours (at the 5OHz rated output power) with a full tank.
*The tank has a fuel gauge which shows the remaining amount of fuel in the tank.
4.
Solid State Ignition System
*Unlike the point system, the solid state ignition system has no contact points so that maintenance due to point wear
is unnecessary and constant output power can be maintained for long.
*Increased spark energy makes starting easy.
5.
Extra-Quiet Operation
*All models are equipped with a large-sized, low-noise muffler.
*All models have a cyclone type air cleaner of a low-noise, dustproof type.
6.
Small Voltage Fluctuations by AVR (Automatic Voltage Regulator)
The automatic voltage regulator automatically adjusts the exciting current to hold voltage regulation down to less than
3%. This helps prolong product life without damaging the electric devices.
7.
DC Output for Battery Charging
The generator can generate a DC output (12V, 1OOW)while generating an AC output so that batteries can be charged
during AC operation. In this case, make sure that the total AC and DC output does not exceed the rated output.
8.
Full Power Switch
me dual voltage type has a full power switch as a standard component. The rated output can be generated at both
12OV (11 OV) and 240V (22OV).
9.
Output Voltage Waveform Close to Sine Wave
The output voltage waveform is close to a sine wave and is free of surges so that the load will not be damaged.
10.
Resistant to Inductive Load
Exciting power is obtained from the sub coil which is wound apart from the main coil. This means less output voltage
fluctuations against load variation, and thus a steady level of power. This feature is effective particularly for induction
motors, for example, which are subject to sharp current variation.
11.
100% Copper Windings
The windings are made only of copper having low internal resistance. This feature also helps improve generator efficiency and prolong generator life.
12.
Easy Starting with Recoil Starter
13.
No-Fuse Breaker for Troublefree Operation
-9-
14.
Ruggedly Built Frame
The box type frame is so ruggedly built that two or more generators can be stacked. Another convenient feature for
the Robin generators.
15.
Wide Range of Options
The elctric starter type, wheels, and econo-throttle are availabe as options.
-10-
P
L
FUEL
GAU/GE
and TANK
CAP
SPARK
CHOKE
LEVER
PLUG
\
CAP
SPEED
STOP
CONTROL
BUTTON
I
s1
2
5)
E
<
ii
z
3,
G)
s
am
4;
si
P
t)
?s
E
r
u
m
t?
7[1
G
i
i2
0
2
z”
i
3
si
OIL
GAUGE
CONTROL
I
FUEL
BOX
STRAINER
AIR
FUEL
I
COCK
CLEANER
RECOIL
I
MUFFLER
STARTER
RECOIL
I
STARTER
HANDLE
4-2
PANEL
A
‘0
f
AC RECEPTACLE
CAC
V
1
VOLTMETER
NO-FUSE
MODEL
RGX305
RGX405
22ov, 23ov, 240v
22ov, 23ov, 240v
MODEL
,RGX505
22OV, 23OV, 240V
MODEL
RGX305
RGX405
RGX505
llOV,
llOV,
llOV,
BREAKER
0
OAC
V
-n
Iv-l-
-I
“3C
JREAKER
I
ON
0
0
-4
OFF
0
AC RECEPTACLE
A
1
ECEPTACLE
/
AC RECEPTACLE
POWER
2
1
SWITCH
No
FUSE
NO-FUSE
AC RECEPTACLE
FULL
VOLTMETER
I~REAKER
‘BREAKER
2
\
0
OAC
V\
MODEL
RGX305D
RGX405D
RGX505D
”
,
J) E
0
I
\ OJ
/
/
AC RECEPTACLE
VOLTMETER
1
AC RECEPTACLE
\
NO-FUSE
2
- 12 -
BREAKER
12Ov
120v
120v
4-3
PANEL
B
DC FUS
MODEL
RGX305
RGX405
RGX505
DC OUTPUT
TERMINAL
J
EARTH
FUSE
(GROUND)
TERMINAL
IOA
RGX305D
RGX405D
DC
EARTH
(GROUND)
TERMINAL
AC RECEPTACLE
3
RGX505D
EAR-iH
(GROUND)
TERMINAL
AC R‘ECEPTACLE
- 13-
3
THROUGH
BOLT
SLIP
RING
COVER
BOLT
FRONT
SHAFT
COVER
I
II
BkUSH
HOLDER
REAR
‘COVER
RUBBER
MOUNT
/
ROTOR
I
STAi’OR
COMPL.
-..-..
I
ENGINE
I
COMPL.
COOLI’NG
FAN
P.1 ‘.O. SHAFT
H
q
;
=!
p
8
z
;;1
E
-I
5z
5-2
FUNCTIONS
5-2-l
STATOR
-l-he stator consists of a laminated silicon steel sheet core,
copper wire which winds the core, and lead wires which deliver the power. The copper wire is wound into the main coil,
sub (auxiliary)
coil, and DC coil. AC output power is taken
from the main coil, and DC output power from the DC coil.
The outside diameters and laminated core thicknesses of
various models are as shown below.
Fig. 5-1
Fig. 5-2
MODEL
RGX305
RGX305D
RGX405
RGX405D
+yg+++j
Table 5- 1
- 15-
1 RGX505
1 RGX505D
FAN
5-2-2
ROTOR
The rotor consists of a laminated silicon steel sheet cover
SLIP
with a field coil wound arount it and cooling fans and slip
rings at both ends of the shaft. The field coil leads are con.
nected to the slip rings and direct current (DC) to the field
coil turns the rotor and magnet. The tooling fans cool the
generator by drawing cooling air from the slip rings and discharging it through the fans.
BEARING
Fig. 5-3
Fig. 5-4
MODEL
d
I
RGX405
RGX405D
RGX305
I RGX305D
RGX505
RGX505D
118
118
4.65
4.65
100
80
loo
3.94
3.15
3.94
(mm)
99.6
(inch)
3.92
bnml
(inch)
j
Table 5-2
- 16 -
RING
5-2-3
- - -
BRUSHES
---------
An exciting current is supplied from the AVR to the rotor.
The brushes are made of carbon; and the brush-holders of
plastic. It is necessary to keep the contact pressure between
the brushes and slip rings withing specific limits. Thus, care
must be taken of brush length. (See 9-3 BRUSHES.)
RGX305.
RGX405.
RGX505,
RGX305D
RGX405D
RGX505D
Fig. 5-5
5-2-4
AVR
(AUTOMATIC
VOLTAGE
REGULATOR)
The automatic voltage regulator employs an electronic circuit to automatically regulate voltage.
RGX305,
RGX405,
RGX505,
RGX305D
RGX405D
RGX505D
Fig. 5-6
5-2-5
VOLTMETER
The voltmeter comes in two types, a 150V maximum type
and a 300V maximum type.
Type voltmeter indicates
generator output voltages. The generators with a generated
voltage of 1 lOV, 120V type and dual voltage type use the
15OV maximum type voltmeter; and those of 22OV, 23OV,
and 240V type specifications use the 300V maximum type
voltmeter.
300 V MAX.
(220 V. 230 V. 240 V)
Fig. 5-7
-17-
150 V MAX.
(110 v, 120 VI
5-2-6
NO-FUSE
BREAKER
The no-fuse breaker prevents AC output overcurrent and
shortcircuit overcurrent.
Some models have one no-fuse breaker, and the others have
two. The single no-fuse breaker protects the generator from
maximum current; and the double no-fuse breakers protect
the generator from maximum current, and its receptacles.
If the generator is operated for long above the maximum
current, the internal temperature of the generator abnormally rises to cause insulation deterioration, burning, electric
NO-FUSE
BREAKER
FUSE
HOLDER
shock, and electric leakage. The no-fuse breaker protects
the generator from such troubles. The receptacles and AC
F&. 5-8
plug have their own rated capacities. (Refer to 5-2-8 RECEPTACLES
AND
PLUG.)
If they are used above the rated
current, insulation deterioration, buring, electric shock, or leakage can occur. These troubles are prevented by the no-fuse
breaker.
Table 5-3 shows breaker capacities and protecting objects.
1
Model
RGX305
RGX305D
RGX405
I
(
@eciiications
N.F.B.
11ov
30A
220V. 23OV. 240V
I 15A (2P2E)
Maximum
current
! 15A (2P2E)
Maximum
current
current
110/22OV,
120/24OV
(
30A
1 Maximum
:
35A
Maximum
current
Maximum
current
Maximum
current
Maximum
current
current
current
22OV, 230V
RGX505
; 110/22OV, 6OHz-120/240V
i
5OHz-120/24OV
:
Object
!
I
! 20A(2P2E)
j
I
) 15A (2P2E) ’
I
’ 20A (2P2E) I
50Hz-11OV. 6OHz-120V
40A
22OV. 230V
25A(2P2E)
i Maximum
current
/ 20A(2P2E)
Maximum
current
/ Maximum
current
30A
30A Receptacle
25A (2P2E) 1 Maximum
current
20A (2P2EI
3OA Receptacle
20A (2P2E) 1 Maximum
current
240V
i 110/22OV, 6OHz-120/240
1
5OHz-120/24OV
’ 15A(2P2E)
I
j Maximum
I
; Maximum
60Hz-11 ov
RGX505D
Protecting
Maximum current
I
!
I
60Hz-11ov
N.F.B.
Object
) 50Hz-1 lOV, 60Hz-120V
240v
RGX405D
Protecting
45A
1
30A
,
30A Receptacle
Table 5-3
l 2P2E means the bipolar doubleelemenr
type, and if either of tw pairs
of currents running through tie no-fuse breaker exceeds the rated current, the no-fuse breaker operates to turn power off.
The 22OV. 23OV, and 240V types use tie two pairs connected in series,
and the 1oOV and 120V type have them connected in parallel.
- 18 -
5-2-7
FUSE
The fuse prevents DC output overcurrent and shortcircuit overcurrent. If the generator is operated at a level exceeding the
maximum current, it can cause insulation deterioration. burning, electric shock. and electric leakage. The fuse protects the
Fuse capacity: 1OA
generator from these troubles.
5-2-8
RECEPTACLE
and
AC
PLUGS
These are used for taking AC output power from the generator. A total of five kinds of receptacles, each varying in rated
voltage and current from another, are used. Each model has at least one receptacle to deliver the rated generator output.
As many AC plugs as the receptacles, each matching the corresponding receptacle, are provided. Table 5-4 shows the rated
current for each receptacle. Be careful not to use the receptacles and AC plugs beyond the specified limits to prevent burning.
I
tz&@
/
@!
w
up to total i 5 amperes
from two receptacles
up to 15 amperes
j
I
;a;
]
up to 20 amperes
‘aI
I
up to 30 amperes
(See Caution.)
Ceution:
Taking out power
put rhe plug into
Table 5-4
5-2-9
from
ouflet
TWIST LOCK RECEPTACLE,
end turn clockwise
to lock it.
Fig. 5-9
TERMINALS
BLACK
RED
The terminals are for producing DC output power, and
come in two colors, red and black. The red one is positive
(+), and the black one negative (-) .
Fig. 5- 10
5-2-10
FRONT
COVER
The front cover is an aluminum die casting and is mounted
on the main bearing cover of the engine. It has vents to discharge cooling air from the generator and the vents are designed to prevent fingers from entering.
RGX305
RGX305D
Fig 5-17
- 19 -
RGX405,
RGX405D
RGX505,
RGX505D
5-2-l
1 REAR COVER
The rear cover is also an aluminum die casting, and has a
faucet joint to hold the stator together with the front cover.
It has bosses inside for holding the brushes, and slits for
taking cooling air in. The slits are so designed that human
fingers will not go in.
RGX305
RGX305C
RGX405,
RGX405D
RGX505,
RGX505D
Fig. 5-12
5-2-12
RUBBER
MOUNTS
(RUBBER
VIBRATION
ISOLATORS)
Rubber pads for controlling generator vibration and dislocation. These are made of the most suitable rubber material
to optimum shape and hardness.
5-2-13
PIPE FRAME
Fig. 5-73
The pipe frame consits of a pipe frame skeleton, side plates A and B, box stay, and air guide.
SIDE
PLATE
B
PIPE
FRAME
SIDE
PLATE
A
5-3-l
REVOLVING
FIELD
TYPE and REVOLVING
ARMATURE
AC VOLTMETER
NO-FUSE
I
BREAKER
BRUSH
ASSY
BRUSH
HOLDER
TYPE
CONTROL
BOX
.\
SOCKETPLUG
FRONT
SLIP
RING
I
,YOKE
REAR
COVER
FNClhlF
COVER
RfIl
POLE
ASSY
FIELD
COIL
T
SHAFT
ARMATURE
ASSY
FIELD
COIL
RMATURE
RUBBER
VIBRATION
ASSY
ISOLATOR
COOLll;G
FAN
Fig. 5- 75
ROTOR
COMPL.
\
SLIP
\
I
RING
COVER
BOLT
/FRONT
COVER
/
SHA ,FT
STATOR
COMPL.
r-r>
BRUSH
II 4! II \
HOLDER
ROTOR
REAR
COMPL.
COVER
SHAFT
Fig. 5- 16
- 21
-
The RG Series is the revolving armature type, and the RGX Series is now the revolving field type. The differences between
these types and their features are described below. The construction of the revolving armature type is shown in Fig. 5- 15,
and that of the revolving field type in Fig. S- 16.
The basic operating principle of the generator is this. As a conductor moves in a magnetic flux (between poles N and S of a
magnet), a voltage is generated in the conductor and can be taken out as electric power. Generally, an electromagnet is used
for generators. The electromagnet consists of poles and field coils wound around them, and the poles become magnets as a
direct current runs through the field coils. The revolving armature type has static poles and a revolving armature which consists of a conductor for taking electric power out. The revolution of the armature generates a voltage.
It was earlier explained that a conductor moves in a magnetic flux. Actually, however, a relative speed between the two is
sufficient for generating a voltage. That is, a voltage can also be generated by rotating the magnet while keeping the conductor still.
The revolving field type falls in this latter category: The pole serving as an electromagnet rotattes, and armature which
consists of a conductor remains still.
The features of the revolving field type are as follows:
a)
onlytwosliprings
As generator applications diversified, it became necessary for generators to meet increasingly varied conditions involving AC output, DC output, dual voltage, three-phase, and usefulness with induction motors. Accordingly, AC windings,
DC windings, auxiliary windings, etc. became necessary for generators. Because the revolving armature type takes electric power from the revolving part, it requires as many slip rings as the number of winding output terminals, and tbis
increases the generator dimensions. The revolving field type is small in size because it requires only two slip rings @r
feeding a current to operate the electromagnet.
b)
Easy maintenance
As many brushes as the number of slip rings are necessary. The revolving field type is easier to maintain than the revolving armature type because it has fewer slip rings and brushes than the other.
4
Lightweight
The revolving armature type is heavy because it requires yokes to fm the poles and serve as flux passage.The revolving
field type is light in weight because the stator and rotor can be made by laminating steel sheets of the same material.
- 22 -
5-3-2
PRIMARY
EXCITING
ACTION
The RGX Series employs an exciting coil in the engine magneto for raising the primary voltage. This action is explained. The RG Series generates a voltage when the generator is
started again because of the residual magnetism remaining
in the yokes and poles. If aienerator
FC
of this type is disas-
sembled and stored for a long period of time, the residual
magnetism may dissipate so that the generator may not
generate a voltage when it is restarted. The RGX Series
has an exciting coil for primary exciting action to eliminate
such a phenomenon.
ENGINE
The primary exciting action of the new type is explained
MAGNETO
Fig. 5- 17(A)
below.
When the generator is started, the permanent magnet on the
engine rotates to genrate a voltage in the exciting coil. This
I
voltage is regulated by a diode in the AVR to feed a current
to the generator field coil (FC). (See Fig. 517(A).)
MC
A
The rotor is turned an electromagnet by that current and
rotates so that voltages are generated in the stator coils
(main coil, sub coil, and DC coil). The voltage generated in
the sub coils is operated by the AVR to feed a current to increase the field coil current (See Fig. 5-17(B).) As a result,
the rotor magnetism increases. This operation is repeated to
SC
c
4
generate the rated voltage at 5OHz or 6OHz in the main coil
and DC coil.
5-3-3
VOLTAGE
Fig. 5- 17/B)
REGULATING
MECHANISM
Connect a load to the AC output terminal and increase current. Output voltage varies as shown in Fig. 5-17(C) depending on whether an automatic voltage regulator is used or
not. The operation of the AVR is explained below.
WITHOUT
When an AC output is taken, the engine is loaded and its
RATED
rpm falls. Also the AC voltage falls due to the voltage drop
caused by the internal resistance of the coils. The AVR
detects this voltage drop and its built-in SCR automatically
increases the current flows to the field coil. As a result, the
I
WITH
AVR
rotor magnetism increases, the voltage fallen by the load
current is raised, and the output voltage is kept constant. If
the AC output is reduced, the SCR operates in the opposite
-A
way to similarly keep the output voltage constant.
Fig. 5 17(C)
- 23 -
AVR
VOLTAGE
5-3-4
FULL
POWER SWITCH
The dual voltage type has a full power switch to produce the rated output from a single 11OV or 120V receptacle. The full
power switch operates as described below. (The full power switch for 12OV/24OV is described as the construction of both
full power switches for 12OV/24OV and 1 lOV/22OVis same.
240V
i-J?-;
7
I
Fig. 5-18
i
Fig. 5- 19
A circuit diagram of the conventional dual voltage type is
shown in Fig. 5 - 18, and a circuit diagram of the RGX
LOW VOLTAGE
RECEPTACLE
Switch
I
HIGH VOLTAGE
RECEPTACLE
Series’ dual voltage type which is fitted with a full power
switch is shown in Fig. 5-19. AC winding s MC1 and
MC2 generate a voltage of 120V each.
Fig. 5 - 18 shows MC1 and MC2 kept connected in series. In
this case, an output can be generated from either the 240V
’
or 120V receptacle. The 240V receeptacle outputs the
I
Table 5-5
rated output (or the maximum output in a short-time operation), but one 120V receptacle can output only one half of the rated output. Since two 120V receptacles are provided: the rated output can be outputted by combining the outputs of the two 12OV receptacles.
The RGX Series shown in Fig. 5-19 changes the connection of MC1 and MC2 to series or parallel with the full power switch.
When the full power switch is shifted to the 12OV/24OV postion, the switch is up as indicated by the solid line in Fig. 5-19,
and connects MC 1 and MC2 in series as shown in Fig. 5-l 8. In this case, voltages up to the rated level can be outputted from
Receptacle 3, and voltages up to one half (12OV) of the rated voltage from Receptacle 1 and Receptacle 2. (If the rated current is over 30A at 12OV, up to 15A can be outputted from Receptacle 1 as the combined output of the two.) When the full
power switch is shifted to the 120V position, the switch is down as indicated by the broken line in Fig. 5-19, and connects
MC1 and MC2 parallel to each other. In this case, no 240V can be outputted, and Receptacle 3 cannot be used. Receptacle
2, which outputs 120V can generate up to the rated power; and Receptacle 1 can output up to 15A in total (or up to 30A if
the rated current is over 30A at 120V). The above is summarized in Table 5-5. Use the full power switch as suitable to the
voltage and input ratings of the electric devices.
- 24 -
54
CHANGE
of ENGINE
PARTS
In detail of the engine, please refer to the service manual, RGX305, RGX305D are refer to EY25, RGX405, RGX405D,
RGX505 and RGX505D are refer to EY35 and EY40.
The RGX Series employs engine parts special to the RGX to suit the modified engine. The engine parts can be classified by ignition system, control system, fuel system, and cooling system. The engine parts for each of these systems are explained
below.
5-4-l
IGNITION
SYSTEM
All models of the RGX Series employ a solid state ignition system. For the RGX305, RGX305D, refer to the section on
EY25 CD1 in the Electrical Ignition Service Manual.
For the RGX405, RGX405D and RGX505, RGX505D, refer to the section on Robin Solid State Ignition in the EY35 and
EY40 Service Manuals.
All models use a primary exciting coil (or lighting coil) of special performance and lead length.
NOTE:
Be careful not to use an exciting coil of different
5-4-2 CONTROL
performance
because it can damage theautomatic
voltage regulator.
SYSTEM
The control parts are centrally located to permit centralized control at the top of the engine. The parts added or changed
are as shown in Fig. 5-20.
LABEL
PLATE
CHOKE
Fig. 5-20(l)
- 25 -
The blower housing has nuts for mounting the bracket, and a wire for the stop button which runs inside the blower housing.
BLOWER
WIRE
HOUSING
Fig. 5-20 (21
5-4-3
FUEL’SYSTEM
The large-sized 164ter fuel tank is mounted in the frame. The fuel piping was changed as a result as shown in Fig. 5 -21.
FUEL
GAUGE
FUEL
/-+,
’ ’
RUBBER
TANK
’
to CARBURETOR
/,
HOSE
RUBBER
HOSE
\
Fig. 5-27
- 26 -
FUEL
STRAINER
CLAMP
CLAMP
PIPE 2
5-4-4
COOLING
SYSTEM
A baffle is provided to prevent engine cooling air from raising the temperature of other parts. Large sized rubber pipe 1
shown in Fig. 5 -21 prevents vapor lock even at high ambient temperature (up to about 45’C).
CAP
(RUBBER)
HEAD
TO MUFF
LEA
BAFFLE
(CARBURETOR
TO CARBURETOR
‘CYLINDER
RGX305,
BAFFLE
COVER
SIDE)
3
RGX405,
RGX505,
RGX305D
RGX405D
RGX505D
Fig. 5-22
5-4-5
OTHERS
The RGX405, RGX405D and RGX505, RGX505D are fitted with an iron plate under the engine to reduce vibration. The
oil dram parts shown in Fig. 5-23 are newly employed for these models to solve the problem of inconvenience in oil change.
CRANKCASE
:-“l/;>SEALWASHER
PLUG
Fig. 5-23
- 27 -
6. SAFETY PRECAUTIONS
1. Use extreme caution near gasoline. A constant danger of explosion or fw exists.
Do not ffi the fuel tank with gasoline while the engine is running. Do not smoke or use open flame near the fuel tank.
Be careful not to spill fuel when refueling. If spilt, wipe it and let dry before starting the engine.
2.
Do not place inflammable materials near the generator.
Be careful not to put gasoline, matches, gunpowder, oil cloth, straw, trash and any other inflammables near the generator.
3.
Do not operate the generator in a room, cave or tunnel. Always operate in a well-ventilated area.
Otherwise the engine may become overheated and also, the poisonous carbon monoxide contained in the exhaust gases
will endanger human lives. Keep the generator at least 1 m (4 feet) away from structures or facilities during use.
4.
Operate the generator on a level surface.
If the generator is tilted or moved during use, there is a danger of fuel spillage and a chance that the generator may tip
over.
5.
Do not operate with wet hands or in the rain.
Severe electric shock may occur. If the generator is moistened by rain or snow, wipe it and fully dry it before starting.
Don’t pour water over the generator directly or wash it with water.
If the generator is wet with water, the insulations wilI be adversely affected and may cause current leakage and electric
shock.
6.
Do not connect the generator to the commercial power lines.
This may cause a short-circuit or destroy the generator. Use a transfer switch for connecting with indoor wiring.
NOTE:
The parts numbers of the transfer swidches and of the plastic box to store tiem are as shown in Table 6- 1.
1
Part No.
I
Part Name
I
1 my
1
1 Allowable Current
!
1
15A
1
:
Phase
08
; Transfer Switch
1
1
367 45605 06
! Transfer Switch
1
1
!
I
;
340 45606 08
; Transfer Switch
1
1
i
1
1
(
3
;
15A
1
3
I!
30A
36545604
30A
60A
340 45608 08
) Transfer Switch
34845609
1 Transfer Switch
!
I
1
367 43008 08
/
Plastic 80x
:
1
1.3
j
30A
34843009
1 Plastic 80x
1
1
1
I
60A
08
08
Table 6- 1
7.
Use fuses of the correct capacity.
If the generator rpm is increased exorbitantly
in the overload condition by using a fuse in excess of the rated capacity,
the generator could be burnt and the AVR be damaged.
CAUSTION:
if the fuse is burnt
out or the circuit
cause can be an overload or a short-circuit.
appliance and ACplugs
for faulty
breaker tripped off as a result of using an electrical appliance,
In such a case, stop operation
wiring,
- 28 -
immediaeiy
and carefully
the
check the electrical
7. RANGE of APPLICATIONS
Generally, the rated power of an electrical appliance often refers to the amount of work that can be done by it. The electric
power required for operating an electrical appliance is not necessarily equal to the amount of work that can be done by it.
Electrical products generally have a label showing their rated voltage, frequency, and power consumption (input power). The
power consumption of an electrical products is the power necessary for using it. When using a generator for operatiig an
electrical product, however, the power factor and starting current must also be taken into consideration.
Determine the required capacity of your generator from the power required for operating electrical products that are class&
fied as follows:
1. Incandescent lamps, hot plates, etc. with a power factor of 1.O
Total power consumption must be equal to or less than the rated output of the generator.
Example: A generator with a rated output power of 1000 W can light ten 100 W lamps.
2.
Fluorescent lamps, mercury lamps, etc. with a smaller power factor
Select a generator with a rated output equivalent to 1.2 to 2 times the power consumption of the load.
Example: A generator with a capacity of 100 W to 160 W is necessary for lighting a 80 W fluorescent lamp. A generator
with a rated output of 1000 W can light 6 to 10 40 W fluorescent lamps.
NOTE:
Wattage of the fluorescent
the lamp.
efficiency
3.
Therefore,
lamp generally
if the fluorescent
does not indicate the power consumption
lamp has no s,oecial indication
should be taken into accounts as explained
but indicates the ou@ut of
as to the power conwmption
or input power,
in Item 5 on the folio wingpage.
Electric tools, etc. that are driven by a motor
Power 1.2 to 3 times the power consumption of a motor-driven tool is required for starting so select a generator with a
maximum output 1.2 to 3 times the power consumption of the load.
Example: A 300 W motor-driven drill requires a generator with a maximum output of 400 to 900 W or more.
4.
Water pumps, compressors, etc. that are driven by a motor which is loaded at starting
3 to 5 times the power consumption of the load is necessary for starting so select a generator with a maximum output
3 to 5 times its power consumption.
Example: A water pump with a power consumption of 400 W requires a generator with a maximum output of 1200 to
2000 W or more.
NOTE
1: Motor-driven
when starting
their
products
mOtOfs.
power consumption
SO
NOTE 2: Motor-driven
the kind of motor and
mentioned
in Items 3 and 4
required
the
aforementioned
generator capacities only
Once their motors are started, the products consume only about 7.2 to 2 times &eir rated
that the excess power generated by the generator can be used for other electrical
producrs
start-up
mentioned
appliances.
in Items 3 and 4 vary in their required motor starthg power depemfing on
load. If it is difficult
to determine
with a larger capacity.
- 29 -
the optimum
generator capacity, select a genemtor
5.
Appliances without any indication
as to power consumption
Some appliances have no indication as to power consumption; but instead the work load (output) is indicated. In such a
case, power consumption is to be worked out according to the numerical formula mentioned below.
(Output of electrical appliance)
(Efficiency)
= (power consumption)
Efficiencies of some electrical appliances are as follows:
Single-phase motor
. . . . . . . . . . 0.6 - 0.75
Three-phase motor
. . . . . . . . . . 0.65 - 0.9
The smaller the capacity, the worse the efficiency,
and vice versa.
Fluorescent lamp . . . . . . . . . . . 0.7 - 0.8
Example 1: A 40 W fluorescent lamp means that its luminous output is 40 W. Its efficiency is 0.7 and accordingly,
power consumption will be 40 i
0.7 = 57 W. As explained in Item 2, multiply
this power consumption
value of 57 W by 1.2 - 2 and you will get the figure of the necessary capacity of a generator. In other
words, a generator with a rated output of 1000 W capacity can light 9 - 14 40 W fluorescent lamps.
Example 2: Generally speaking, a 400 W motor means that its work load is 400 W. Efficiency of this motor is 0.7 and
power consumption will be 400 + 0.7 = 570 W. When this motor is used for a motor-driven tool, the capacity of the generator should be multipled by 1.2 to 3 and 570 W as explained in the item 3. Moreover,
in casewhen used this motor for the pump in the water or cornpresser, it is necessary 3 - 5 rimes powerful
generator according to the item 4.
Model
I
Frequency
:
incandescent lamp,
hot plate, etc.
1
Fluorescent lamp,
mercury lamp, etc.
Motor-driven tool,
general-purpose
motor, etc.
RGX305
RGX305D
’
5OHz
5OHz
60Ht
5OHZ
6OHZ
2500w
2900w
3300w
3700w
j 4400W
4800W
) about
! 19OOw
about
2200w
) about
/ 2500W
about
2900W
! about
I 3200W
about
16OOW
’
RGX505
RGX505D
RGX405
RGX405D
I
!
about
15oow
1
!
about
750W
about
17OOw
I about
I 2ooow
i about
, 2200w
60Hz
I
j 2%%
I
about
2800w
I
Water pump,
compressor
1 about
j 850W
I
i about
( 1OOOW
Table 7- 1
- 30 -
about
11oow
about
(I 125ow
about
1 1400w
I
I
NOTE:
1.
Wiring between generator and electrical appliances
Allowable
current of cable
Use a cable with
a
allowable
current that is higher than the rated input current of the load lelectrical
input current is higher than the allowable
teriorate
2
the insulation,
possibly
appliance).
If the
current of the cable used, tie cable will become excessively heated and de
boring it out
Table 7-2 shows cables and their allowable
currents for your reference.
Cable length
If a long cable is used, a voltage drop occurs due to the increased resistance in the conductors so that the input voltage
to the load (electrical
product)
decreases. As a result, the load can be damaged, table 7-2 shows voltage drops per 100
meters of cable.
Nominal
cross
section
Currant
I
mm1
I
A
i
NoJmm
1
0.75
1
7
1
3010.18
;
2.477
I
1.25
/
12
1
5010.18
;
2.0
17
j
3.5
5.5
SWlOOm
1
1A
1 3A
1
1 2.5V
(
8V
1.486
i 1.5v
/
5v
3710.26
0.952
/
1v
23
45/O .32
0.517
!
35
7010.32
0.332
/
5A
Amp.
1 8A
1 10A
1 12A
1 15A
1
1 12.5V
1
1
[
1
-
1
) 7.5v
1 12v
; 15V
1 18V
1
-
1
1 3v
1
j
8V
1 1OV
12v
I 15v
-
’ 1.5V
j 2.5V
4V
;
i 6.5V
; 7.5V
-
1V
5v
2v
-
2.5v
-
5V
3.5v
-
4v
/
5v
Table 7-2
Voltage decreaseindicates as V = lie x R x I x Z
R means resistance (S2/lOOm) on the above table.
I means electric current through the wise (A)
.Q,meansthe length of the wire (m)
The length of the wire indicates round length, it means two times of the length from generator to electrical tools.
-31-
8. MEASURING
8-1
PROCEDURE
METERS
8- 1 - 1 VOLTMETERS
AC and DC voltmeters are necessary. The approximate AC
voltage ranges of the voltmeters to be used for various types
of generators are as follows:
0 to 150 V: Type with an output voltage of 110 or 120 V
0 to 300 V: Type with an output voltage of 220,230, or
240 V
FOR
0 to 150 V, 0 to 300 V: Dual voltage type
AC
DC
FOR
DC
Fig. 8- 1
The DC voltmeter range is approximately from 0 to 30V.
8- l-2
FOR
AMMETERS
AC and DC ar:meters are necessary. An AC ammeter with a
range that can be changed according to the current rating of
a given generator is most desirable. (About 10 A, 20 A,
100 A)
The DC ammeter range is approximately from 0 to 15 A.
FOR
AC
Fig. 8-2
8-l -3 FREQUENCY
METER
Frequency range: About 45 to 65 Hz
NOTE:
Be careful
of the f=quency
meter’s input voltage
range.
Fig. 8-3
- 32 -
8-1-4
TESTER
Used for measuring resistance, etc.
Fig. 8-4
8-1-5
MEGGER
TESTER
Used for measuring generator insulation resistance. Select
one with testing voltage range of 5OOV.
Fig. 8-5
8-1-6
TACHOMETER
There are various types of tachometers, such as contact-less
type, contact type, and strobe type. The contact type can
CONTACT-LESS
TYPE
be used only when the generator and engine have been disassembled. The contact-less type is recommended.
STRbBE
Fig. 8-6
- 33 -
TYPE
8-2
AC OUTPUT
MEASURING
TO
Use a circuit like the one shown in Fig. 8-7 for measuring AC output. A hot plate or lamp with a power factor of 1.0 may
be used as a load. Adjust the load and rpm, and check that the voltage range is as specified in Table 8-1 at the rated amperage
and rated rpm.
I
I
11ov
1
Voltage range
! 108-115V
220 v
12OV
I
Rated voltage
218 - 225 V
118%125V
230v
1
228 - 235 V
240v
238 - 245 V
Table 8- 1
8-3
DC OUTPUT
MEASURING
00
SWITCH
LOAD
@
@
DC TERMINAL
Fig. 8-8
Switch the power on, when 1.45R resistance attached as a load, check that the voltage is within the range of 13 to 11V.
NOTE:
If a battery
is connected
charge. Control battery
84
MEASURING
as the load, the output voltage increases by about I to ZV, possibly causing battery
liquid level during charging to prevent overcharging.
INSULATION
RESISTANCE
Connect a megger tester to one of the two receptable output
terminals and the ground terminal, then measure the insulation resistance. An insulation resistance of 1 megohms or
more is normal.
(The original insulation resistance at the
time of shipment from the factory is 10 megohms or more.)
If it is less than 1 megohm, disassemble the generator and
measure the insulation resistance of the stator, rotor and
control box individually.
Fig. 8-9
-34-
over-
. STATOR
Measure the insulation resistance between the red or white
coupler from the stator and the core.
Fig. 8- 70
. ROTOR
Measure the insulation resistance between the core and
one of the slip rings of the rotor.
Fig. 8- 11
. CONTROL
BOX
Measure the insulation between the live parts and the
casing or grounded part. Close the no-fuse breaker first,
then measure it.
Any part which has an insulation resistance of less than 1
megohm has a faulty insulation, which can cause electric
shock or leakage. Replace such parts.
Fig. 8- 12
- 35 -
9. CHECKING
9-1
STATOR
9-l-l
FUNCTIONAL
MEMBERS
STATOR
ASSEMBLY
MEASURING
ASS’Y
\
WINDING
\
RESISTANCE
Check the resistances of the leads from the stator with a
tester. (See Fig. 9 - 1.)
Check all the leads which are shown by type in the tables
below. Any lead which is inactive is faulty.
NOTE:
Testers are not so accurate that some margin of er-
ror must be taken into account
when reading the tester
agains the values shown in the Tables.
lt is measured by wheatstone
bridge in regularly.
ln this
time, please care enough not to exist the contact registance.
*RGX305,
RGX305D
Fig 9- 1
l
50Hz 220V. 23QV, 24QV
l
50Hz 11 OV, 11 OVf22QV. 12OVf24QV
l
60Hz 1 lOV, 12OV, 1 lOV/22OV,
*RGX405,
12OVI24OV
RGX405D
l 50Hz 22OV. 23QV. 24QV
.50Hz
1 :h;or
1 IQV, 1 lQVf22OV.
12QVl24OV
1
““,::I
,“I,,
IWii~;~Y~l-:““,l
I Wire color
BLUE
l
60Hz 11 OV, 12OV. 11 QVi22QV, 12OVl24OV
- 36 -
1
BLUE
0.2
1
52
*RGX505,
l
RGX505D
50Hz 22OV. 23OV, 240V
yzJG-Jq
ml
l 50H.z 1 lOV, llOVI22OV.
12OVl24OV
l 60Hz 11OV. 12OV, llOVi22OV.
9-l-2
MEASURING
INSULATION
Refer to 8-4 MEASURING
9-2
9-2-l
i
BLUE
I
]
0.14
BLUE
12OVi24OV
RESISTANCE
INSULATION
1 Wire color
ROTOR
RESISTANCE.
ROTOR ASSEMBLY
WWDING
RESISTANCE
MEASURING
Check the resistance between the two slip rings with a tester. (See Fig. 9-2.)
The resistance is normal if it is anywhere from 5 ohms to
7.5 ohms.
TESTER
Fig. 9-2
9-2-2
MEASURING
INSULATION
Refer to 8-4 MEASURING
9-2-3
CLEANING
RESISTANCE
INSULATION
RESISTANCE.
SLIP RINGS
The slip ring surfaces must be uniformly bright. Slip rings
showing black spots, excessive wear, or uneven wear must
be repaired. A stained slip ring lowers generator efficiency
and output voltage. Polish the slip rings with fine sandpaper
while turning the rotor until rough spots disappear. Care
should be taken not to touch the rotor coils with the sandSANDPAPER
paper. (See Fig. 9-3.)
Fig. 9-3
- 37 -
1
52 1
9-3
BRUSHES
The brushes must be smooth where they contact the slip
rings. If not, polish smooth the brushes with sandpaper. A
brush that is not smooth produces arcs between the brush
and slip ring leading to possible damage.Usable brush lengths
are from 5 mm to 15 mm as shown in Fig. 9 -4. A brush
shorter than 5 mm must be replaced because decreased contact pressure between the brush and slip ring lowers generator efficiency and output voltage.
!15mm-5mm
15mm-5m
r
Fig. 9-4
9-4
AVR (AUTOMATIC
VOLTAGE
REGULATOR)
AVR trouble may be identified.by simply looking at the AVR, or by checking the inter-lead resistance with a tester, or actually mounting it ln the generator and operating it.
9-4-l
AVR TROUBLE
IDENTIFICATION
by APPEARANCE
If an AVR electronic part is burnt dark, or the surface epoxy resin melted, it often indicates indicates AVR trouble.
9-4-2
IDENTIFYING
INTER-LEAD
AVR TROUBLE
by CHECKING
RESISTANCE
Check the inter-lead resistance of the AVR with a tester.
(See Fig. 9 - 5 .) If the tester readings vary greatly from the
values specified in the tables below, the AVR is faulty.
NOTE:
Take tester inaccuracy
in to account in reading tie tester.
TESiER
Fig 9-5
-38-
Tester polarity
Yellow
Red
White
Green
j
Brown
!
I
I
m
i7OOK-lMi2
One wire: 052
72K
- - 120KQ
Another:
Yellow
00
White
I
Green
i
I
Brown
j
I
-
-
-
-
QO
One wire: Ost
409K - 500KR
72K - 120KS2
Another:
,
Red
’
65K - 1OKR
65K - 1OKR
00
/ 250K - 300KS2
Do
400K - 500KC!
1 130K - 140KSI
00
220K - 250KR
1 45K-5OKR
-
’ 250K-3OOKSZ
’
-
m
-
i 130K-
;
-
m
j
-
! 6OOK-1Mfl
i
70K-1lOKR
-
!
-
1 400K - 5OOKCZ
70K-1lOKn
-
-
i 400K - 5OOKS1
40K - 46KR
m
’ 6.5K - 8.5KQ
-
-
250K - 3OOKSZ
40K - 46KS2
00
-
140Kfi
*Upper rows are for the 220,230,24OV
and the dual voltage type.
specifications;
I
45K-
50KS2
7K-9.5Kfi
lower rows for the 110,120V
specifications
Table 9- 1
MODEL
RGX405.
Tester polarity
RGX465D.
RGX505.
Yellow
00
RGX565D
Red
White
Green
300K - 500KS2
1OKC! - 70KQ
150K - 25OKfi
lOKR-
One wire: OS2
00
Red
00
White
Green
Brown
70KR
1
lead resistance
Another:
existence
=
; llOK-125KS2
:
3OOKR
m
!
220K-250Ka
1
-
00
00
, llOK-125Kn
I*
-
00
/ lead resistance
1
’ existence
00
i 330K - 500KSZ
I
10K - 70Ka
00
j 150K-256KS2
j
IOK-7OKQ
f
00
300K - 5OOKS2 i
10K - 40KS2
m
00
150K - 25OKR
10K - 40KQ
00
specifications;
AVR TROUBLE
by MOUNTING
15OKa
lead resistance
8 existence
-
lower rows for the 110, 12OV specifications
*Lead resistance existence does not change so big in the amplitude
change the range of the tester.
Table 9-2
IDENTIFYING
00
00
*Upper rows are for the 220, 230,240V
and the dual voltage type.
9-4-3
existence
One wire: OR
j 220K-25OKR
-
lead resistance
Another: =
Yellow
00
Brown
AVR in THE GENERATOR
degree of the hand when
and OPERATING
AVR
SCR or transistor damage cannot be detected by simply looking at the AVR or checking the lead resistances. Check it by
mounting the suspectedly faulty AVR in a normal generator, or mount a normal AVR in a generator which fails to generate
voltage.
-39-
9-5
FUSE HOLDER
9-5-l
and NO-FUSE
HOLDER
FUSE HOLDER
Only the LG301 and LG301D have a no-fuse breaker.
Push the power switch off and check continuity.
If no cur-
rent flows, it is normal. Then push the power switch on and
check continuity
again. If current flows, it is normal.
If the breaker is a two-pole type, the two pairs of terminals
must carry current.
Fig. 9-6
9-5-2
NO-FUSE
FUSE HOLDER
BREAKER
Check that a fuse is in the fuse holder and check its continuity with a tester. (See Fig. 9-7.) If it carries current, it is
normal.
If there is no current, take the fuse out and check it for
continuity.
If the fuse carries current, the fuse holder is
faulty. If the fuse carries no current, replace it with a fuse
of the correct capacity, and check the fuse holder again for
continuity.
Fuse capacity is 10A.
Fig, 9-7
-40-
9-6
RECEPTACLE
and AC PLUG
Check the current-carrying parts of the receptacles and AC plugs and their leads and plastic parts for bums.
9-7
VOLTMETERS
Apply AC voltage to a terminal and check if the voltmeter
reads normal.
VOLTMETER
9-8
DIODE
STACK
Fig. 9-8
ASSEMBLY
+
--
eI-
Fig. 9-9
The internal circuitry
Fig. 9-10
of the diode stack assembly is as
shown in Fig. 9-9. Check inter-terminal continuity
with a
tester as shown in Fig. 9-10 to see that the results are as
shown in Table 9 -8.
I
CURRENT
TERMINAL,
; TERMINAL
NOTE:
1-1
A --4-c
B Current flows from A (+I to B 1-J.
C-
D Current does not flow from C PI to D l-1.
-
‘-I-!-
Table 9- 8
-41-
Check both terminals
9-9
PRIMARY
EXCITING
CIRCUIT
As described in 5-3 DESCRIPTION
ERATION,
of GENERATOR
OP-
the primary exciting coil is in the magneto
mounted 0~1the engine, and the AVR has a circuit for it.
9-9-l
EXCITING
COIL
The normal inter-terminal resistance of the exciting coil is
about 10 to 30 ohms. Its voltage at the rated rpm is about
AC 10 to 30 V. Check the resistance and voltage with a tester to seeif they meet these requirements.
9-9-2
OTHERS
Fig. 9- 10
No output voltage from the generator.
If the trouble cannot be detected by Step 9-9- 1 above, check the primary exciting circuit as follows:
A. Disconnect the control box and operate the generator at the rated rpm. Disconnect the two yellow wires from the exciting coil to the AVR, and momentarily connect the positive (+) and negative (-) leads of a 12V battery in their place. If
no output voltage is generated, reconnect the battery leads the other way. If output voltage is generated, the exciting
coil is defective.
B. If no output voltage is generated by the test conducted as desribed in Step A., operate the generator at the rated rup and
momentarily connect a 12V battery to the brushes. The green lead is positive (+) and the black or brown lead negative
(-) (See Fig. g-11.). If output voltage is generated, the primary exciting circuit in the AVR is defective. Replace the
AVR.
Fig. 9- 11
-42-
10. DISASSEMBLY and REASSEMBLY
10-I
PREPARATIONS
and SUGGESTIONS
1) Wren disassembling the engine, remember well the locations of individual parts so that they can be reassembled correctly. If you are uncertain of identifying some parts, it is suggested that tags be attached to them.
2)
Have boxes ready to keep disassembled parts by group.
3)
To prevent missing and misplacing, temporarily assemble each group of disassembled parts.
4)
Use the correct tools in the correct way.
10-2 HOW TO DISASSEMBLE
Order 1
1
Procedure
Item
, Fuel Tank
!
i
I
I
I
[
I
I
Remarks
( 1) Remove the front panel. (See Fig. lo- 1.) Be careful not to cut the
wiling.
Remove the screws, and suspend the
I
control box front panel with a wire.
4$ screw . . . 6 PCS.
I
i
(2) Remove the strainer bracket (See Fig.
10-2.)
Remove the strainer bracket bolts on
the bottom of the control box.
54 bolt . _ . 2 PCS.
1 Be careful not to pinch
(3) Temporarily f&ten the front panel.
the wiring.
Temporarily fasten it with two or
:
three screws removed in Step (1).
i If fuel spills out from the
(4) Remove the rubber pipe.
fuel pipe, wipe it off.
(See Fig. 10-3.)
Turn the fuel cock off, remove the
clamp from the strainer on the carburetor side of the fuel pipe, and remove
the fuel pipe.
I
(5) Remove the fuel tank bolts.
I
(See Fig. 10-4.)
89 bolt. . . 4 PCS.
(6) Remove the fuel tank.
Be careful not to lose the
rubber washers located
between the fuel tank
I and tank mounting side
i plates.
Fig. 10-2
Fig. lo- 1
-43-
Tool
I
1 (+) screwdriver
’ 8 mm spanner
I
(+) screwdriver
’ Rliers
13 mm spanner or
1 box spanner
I
[
*
Fig. 10-3
Fig. 10-4
I
Order
1
i
2
Item
Procedure
Control Box
I
Remarks
(1) Remove the connector and coupler.
Remove the connector and coupler
that are connect to the rear of the
control box.
Tool
The connector and bushing are so designed as to I
lock, so push and pull
I out as shown in Fig. lo- 5.
I
I
I
(1)
Fig. 10-5
(2) Remove the control box bolts and
the control box.
Remove the bolts from the frame
and box stay.
Fig. 10-6
-44-
1 Be careful not to drop the ’ 10 mm spanner
the control box.
I
Order
Item
I
Frame
3
I
Procedure
I
Remarks
(1) Remove the box stay.
69 bolt. . . 2 PCS.
(2) Remove the side plates, front and rear.
I
, It is not necessary to remove the air guide.
Black special bolts are
used.
10 mm spanner
10 mm spanner or
box spanner
13 mm spanner
(3) Remove the generator mounting nuts.
I
I
/
I
RGX305, RGX305D:
Remove the \
nuts that fasten the engine and rubber (
mount and the nuts that fasten the
generator and rubber mount.
I
I
89 nut . . .4 PCS.
RGX405: RGX405D, RGX505, RGX / The bolts are welded to
the engine base.
505D : Remove the nuts that fasten
the engine to the engine base, and the
nuts that fasten the rubber mount the
generator.
(See Fig. 1O-7.)
- ,
ag nut . . .6 PCS.
!
I
(4) Remove the generator.
(See Fig. 10-8.)
Lift the generator with a chain block,
and remove the frame.
(5) Remove the rubber mount.
RGX405, RGX405D, RGX505, RGX
505D: Remove the nuts that fasten
!
the engine base and rubber mount.
I
Twist the rubber mount and take it
off.
Fig. 10-7
I
Be careful of the genera- 1
’ tor balance.
j
I
I
Rubber mount is fastened i 13 mm spanner or
’ with the nuts welded to / box spanner
the bottom of the frame. :
\
i
Fig. 10-8
-45-
TOOi
Order
1
I
4
Item
Procedure
Brush holder
(1) Remove the brush cover.
Remove the brush cover in back of the
I
rear cover.
40 screw. . . 2 pcs.
, (2) Remove the brush holders.
I
(See Fig. 10-9.)
Disconnect the terminals wired to the
I
brushes before removing the brush
holders.
I
50 screw _ . . 2 pcs.
I
I
1
I
1
Remarks
I
1
I
I
/
1
!
i
I
Tool
/ (+) screwdriver
1
Be sure to remove the
brush holders first because if the rear cover is
removed from the generator without removing
the brush holders the
brushes will break.
1
I
i
1
I
’
I
5
1 Rear cover
i (1) Loosen the cover bolts and remove
them.
I
* RGX305, RGX305D
6~ bolt . . . 3 PCS.
I
* RGX405, RGX405D, RGX505
RGX505D:
89 bolt . . . 4 PCS.
(2) Remove the stator cover.
Turn up the stator cover edge and
!
remove the stator cover.
(3) Remove the rear cover.
The type that uses a con(See Fig. lo- 10.)
nectar does not permit
I
Lightly tap the rear cover with a
complete separation of
I
plastic hammer, and remove it.
the stator and rear cover
*RGX505- llOV, l?OV, RGX505D:
because the connector
Pull out the wire from the rear
cannot be pulled out of
1
cover.
the rear cover or grammet. In this case,simply
I
remove the rear cover
from the bearing.
I
Fig. lo-10
Fig. 10-9
-46-
10 mm spanner or
i box spanner
i 13 mm spanner or
a box spanner
I
/ (-1 screwdriver
I
!
!
Order
6
T
t
I
I
I
Item
Stator
I
!
I
Tool
Procedure
1L
I
t
! (1) Remove the stator.
Full out the stator from the front cover
!
by lightly tapping the outside of the
core with a plastic hammer. (See Fig. 10
11.) If the stator does not come out,
insert a screwdrive between the front
cover and stator, and twist it. (See Fig.
10-12.)
I
i (2) Separate the stator and rear cover.
Separate the connector and wire.
Rush the terminal locks in the connector with a pm having a needle-like
sharp point, and remove the terminals,
(See Fig. lo- 13.)
sever hammer the windings and leads.
Be careful not to peel the
stator steel sheets.
It is not necessary to
separate the stator and
rear cover except when replacing the stator, rear
cover, or diode stack.
f
PUSH
Fig. 10-13
Fig. lo-12
Fig. 10-l 1
-47-
Plastic hammer or
(-) screwdriver
Order
7
item
Rotor
,
Procedure
Remarks
(1) Pull out the through-bolt. Fit a box
spanner or socket wrench over the
head of the through-bolt, strike it
hard counterclockwise with a hammer to loosen, and remove the
through-bolt. (See Fig. 10-14.)
1Og bolt . . . 1 pee.
(2) Remove the rotor.
Strike the rotor by the core with a plastic hammer, and remove the rotor from
the engine taper shaft. If the rotor does
not come out, change its angle and
strike it again. (See Fig. lo- 15.)
!
Fig. 10-14
Hammer
Box spanner, or
socket wrench
14mm
i
Never strike the slip rings
or windings.
Fig. lo-15
- 48 -
Tool
NOTE:
1.
In case the rotor cannot pull out, please do the following
Prepare the tool in the dimensions of the following
L,
a
ways.
for pulling out the rotor.
-i
,
T!
-1
11)
-I
A’B
‘T
jC1D
!
Pitch
MODEL
1
L
RGX305
RGX305D
/
:
250mm
9.8”
: 33mm
1.3”
@lOmm
I; $0.39”
/
@mm
G50.31”
20mm
,
( 0.79”
i
i
12mm
0.47”
1.5mm
: 0.06”
RGX405
RGX405D
1 235mm
, 9.3”
’ 33mm
: 1.3”
f$lOmm
j 40.39”
/
’
@mm
(bO.31”
20mm
,
; 0.79”
/
12mm
0.47”
1.5mm
! 0.06”
RGX505
RGX505D
! 266mm
i 10.5”
33mm
1.3”
1 @lOmm
i qlo.39”
!
#8mm
#0.31”
20mm
0.79”
!
12mm
i
’ 0.47”
1.5mm
I 0.06”
Table 1O- 1
Parts numbers of the rotor puller are as follows:
I
Parts No.
’
I 367 543308
i
I
Parts Name
SHAFT
I,
,I
367 543308
/
BOLT
Description
1
i
RGX305,
I
RGX305
1 RGX405,
RGX405D
RGX505,
RGX505D
RGX305,
RGX305D,
Table 10-2
-49-
RGX405,
RGX405D.
RGX505,
RGX505D
2.
Remove a throughbolt
and insert the shaft of rotor puller into the hole for throughbolt
and push it up till the shaft
reaches the screw hole of the P. T. 0. shaft on the side of engine.
3.
As shown in Fig. lo- 16, screw up the bolt pushing the rotor puller shaft and remove the rotor.
Fig. lo-16
1 Order
8
]
Item
I
( Front cover
!
I
1
Procedure
I
(1) Remove the front cover.
Remove the bolts that fasten the engine’s main bearing cover to the front
cover.
8@bolt...4pcs.
I
- 50 -
I
Remarks
I
TOOI
13 mm box spanner
1
10-3 HOW TO REASSEMBLE
10-3-l
FRONT
COVER
Attach the front cover to the engine main bearing cover.
Match the faucet joint, and tighten the bolts.
8$xlSmmbolt...4pcs.
Tightening torque 120 to 14Okg-m
NOTE:
Make sure that the slits for cooling air an? dew.
NOTE:
The RGX405,
RGX405D
and
RGX505
RGX
505D use the same front cover.
10-3-2
1)
ROTOR
Clean the tapered part of the engine output shaft and
Fig. lo-17
the female tapered shaft of the rotor shaft of oil and
other foreign matter with waste cloth.
2)
Install the rotor and tighten the through-bolt. (See
Fig. 10-18.)
Tighten the through-bolt by striking a box spanner
or socket wrench hard clockwise.
NOTE:
The outside
ness of tie rotor
diameter
and lamination
thick-
is shown in Item 12) Rotor, Para-
graph 5- 2 Functions.
NOTE:
The tiro;rgh-bolt
is shaped as shown below.
Fig. lo- 18
RGX405
’
RGX405D
RGX505
RGX505D
’
10 mm
230 mm
25 mm
0.39 inch
9.06 inch
0.98 inch
10mm
0.39 inch
260 mm i
10.24 inch 1 0.98 inch
Table 10-3
-51-
25 mm
10-3-3
STATOR
Install the stator to fit the faucet joint of the front cover.
If it does fit properly, lightly strike the stator core with a plastic hammer as shown in Fig. 10-20.
NOTE:
Never strike the winding.
NOTE:
Make sure that the mares to tie control
h
toBRUSH
(GREEN
to CONTROL
HO
AND
box are up and that the wires to the brushes are to the back.
BOX
FRONT
COVER
o DIODE
0 BLUE
ATOR
STACK
WIRES)
Fig. lo-20
COVER
Fig. lo-19
10-3-4
1)
REAR COVER
Install the diode stack in the rear cover. (See Fig. lo21.)
40 x 18 mm screw . . . 1 pc.
2) Wire the stator to the diode stack.
The diodes are marked as shown in Fig. 10-22.
Connect the two blue wires to the two points marked
0.
Connect the orange wire to the point marked 0.
Connect the brown wire to the point marked 0.
3) Pass all the wires from the stator through the hole
in the top of the rear cover.
I
L-
Fig. lo-21
DISPLAY
Fig. lo-22
- 52 -
4)
Install the rear cover to fit the rotor bearing.
Lightly
strike the circumference of the rear cover
evenly with a plastic hammer. (See Fig. 1O-23.)
NOTE:
Be careful not to pinch
the wires between
the stator and rear cover.
Fig. lo-23
5)
Tighten the cover bolt.
NOTE:
The bolt cannot be tightetied
unless the front cover and rearcover
are positioned
correcdy.
The shape of the cover bolt is shown below.
d
MODEL
RGX305
I
6mm
RGX305D
i
I
0.24 inch j
RGX405
1
8mm
RGX405D
-
RGX505
RGX505D
0.31 inch
8mm
I
I
0.31 inch i,
6) Install the stator cover.
+RGX305, RGX305D
Fit the stator cover between the stator and cover
bolts until it covers all the cover bolts, and fold
back the edge.
*RGX405, RGX405D and RGX505, RGX505D
Fit the stator cover all the entire cover bolts, and
fold back the edge.
7) Pass the wires out of the top of rear cover through
the grommet, and fit the grommet into the hole in
Fig. lo-24
-53-
130 mm
25 mm
5.12 inch
0.98 inch
135 mm
25 mm
5.31 inch :
Table 10-4
the rear cover. (See Fig. 10-24.)
S
0.98 inch
(
35 mm
6.10 inch i
1.38 inch
155mm
8)
Insert the wires into the connectors.
The connector positions and wire colors are shown in
Table 10-3.
NOTES:
1.
RGX505 - 1 lOV, 12OV, RGX505D:
Connectors
are used for terminals
(7) through
(101
only. The others are pin terminals
2.
Terminals
111 through
(61 are for a 2 mm’
terminals (71 through (10) for a 0, 75mm2
wire and
wire.
Fig. lo-25
MODEL
RGX305,405
220,230,24OV
’
!
RGX505
220,230,24OV
WHITE
RGX305D.
405D.
RGX305.405
110,120v
-
-
I
]
I
I
YELLOW
I
1 WHITE
’
RED
RED
WHITE
RED
BRACK
WHITE
RED
’
BROWN
ORANGE
WHITE
BROWN
ORANGE
WHITE
ORANGE
WHITE
BROWN
I
RED
BROWN
GREEN
,
I
RED
BROWN
GREEN
!
RED
1 BROWN
GREEN
I
I
Table 10-5
10-3-5
BRUSH HOLDER
1) Install the brush holders in the rear cover.
Pass the mounting screws through the brush holders,
push the brush holders so that the brushes will be perpendicular to the slip rings, and tighten the screws.
(See Fig. 10-26.)
54~~18mmscrew...2pcs.
NOTE:
mere are two kinds of bursh holders.
Fig. lo-26
RGX305
RGX305D
RGX405,
RGX505,
Fig. lo-27
-54-
RGX405D
RGX505D
NOTE:
The mounting
isshown
in Fig. lo- 28
dirmtion
GREEN
WIRE
BROWN
WIRE
of the brush holders
for Models RGX405,
RGX405D,
RGX505
and RGX 505D
Fig. lo-28
NOTE:
If a brush is installed
oblique
to the slip ring, the brush holder can break tien
the screw is tightened; or the
brush may break when the generator is started.
After
installing
the brush holders, measure the resistances across the bnrshes and terminals
with a tester if they am
from 5 ohms to 7.5 ohms.
If so, the brush holders am corracdy
2)
mounted.
Attach the connectors to the brush holders.
Connect the green wire to the stator end and the brown wire to the bearing end. (See Fig. 10-28.)
3)
Install the brush cover.
RGX305, RGX305D:
4tp x 8 mm screw . . .2 PCS.
RGX405, RGX405D, RGX505, RGX505D:
5~xlOmmscrew...2pcs.
10-3-6
FRAME
1) Attach the rubber mounts to the frame.
Tighten the rubber mounts on the nuts welded to the bottom of the frame.
RGX305, RGX305D..
.4 PCS.
RGX405, RGX405D, RGX505, RGX505D . . .6 pcs.
NOTE:
The rubber mounts are so seltxted
as to assure optimum
sure to use the rubber mounts of the correct parts number.
in hardness.
2)
vibration
depending
on model and frequency.
Rubber mounts may appear the same in shape but differ
P
1
RGX405, RGX405D, RGX505, RGX505D:
Install the engine base. (See Fig. 10-29.)
Benuts..
.4pcs.
Fig. lo-29
- 55 -
Be
3)
Install the generator in the frame.
Lift the generator with a chain block, install it in the
frame, and tighten the nuts. (See Fig. 10-30.)
RGX305, RGX305D
B@nuts...4pcs.
RGX405, RGX405D, RGX505, RGX505D
89 nuts . . .6 PCS.
4)
Attach the side plates to the frame.
Mount the side plate that reads Robin Generator
Model name to the front, and the blank side plate
to the rear.
NOTE:
Use the black bolts for tightening
them.
Fig. lo-30
jt$ x 13 mm bolts _ . -8 PCS.
5) Attach the air guide to the box stay.
5@xl5mmbolt...2pcs.
6)
Attach the box stay to the side plates.
6r#~x15mmbolt...2pcs.
10-3-7
1)
CONTROL
BOX
Fasten the control box to the frame and box stay.
(See Fig. 10-3 1.)
6@xl2mmbolt...4pcs.
2) Wire the primary exciting circuit.
Connect the two yellow wires of the automatic voltage regulator in the control box to the exciting coil
wires of the engine, and clamp them to the control
box with cord bushings. (See Fig. 10-32.)
Fig. lo-31
Fig. lo-32
3)
Connect the connectors to the control box.
-56-
10-3-8
FUEL TANK
1)
Attach the strainer, nut, and banjo to the strainer bracket.
2)
Remove the front panel from the control box, and mount the strainer bracket.
5q5~12mmbolt...2pcs.
Mount the front panel again.
3)
Mount the fuel tank on the side plates with rubber washers between the side plates and the fuel tank.
84x 18mmbolt...4pcs.
4)
Connect the rubber pipes.
First, fit the hose clamps on the rubber pipe, connect the strainer and fuel tank, fasten the rubber pipe with the
hose clamps.
NOTE:
Keep the strainer in the off position
until the pipe has been connected.
FUEL
GAUGE
/FUEL
\
RUBBER
II
PIPE 1 .
\----STRAINER
(See F&. 10-33.)
u
I
I-
TANK
HOSE CLAMPS
I
‘RUBBER
gK,q\
CONTROL
‘FUEL
BOX
Fig. lo-33
- 57 -
STRAINER
PIPE 2
10-4
CONTROL
BOX CHECK, DISASSEMBLY,
and REASSEMBLY
lo-4- 1 CHECK
Check the wiring by removing the control box from the
frame and taking the top lid off.
10-4-2
DISASSEMBLY
1) Remove the control box top lid, and the front panel
from the control box. (See Fig. 10-34.)
2)
Remove the connectors from the control box, and
the wires from the connectors.
NOTE:
Push the tenninal
locks in #e connectors
with a long, pointed pin to unclock the terminals, and
remove them. (See Fig. 1O-35.)
3)
Remove the automatic voltage regulator.
4)
After-disconnecting
Fig. 70-34
the wire from each part, remove
9
the parts.
NOTE:
their
The DC fuse and the full po~rswitch
&es
soldered
to them.
Unsolder
have
their
wires
first, and then remove them.
10-4-3
PUSH
REASSEMBLY
Reverse the disassembly procedure.
NOTE:
The wires are colored for identification
of capacity
Fig. 1035
and gauge. Be wre to use the same wires as disconnected.
NOTES:
1.
RGX505 - 1 lOV, 1aV;
Connectors
RGX505D.
are used for terminals
171 through
(10)
only. 7rhe others are pin terminals
2
Terminals
(1) through
(61 are for a 2 mm2 wire and
terminals 171 through (1) for a 0.75 mm2 wire.
Fig. lo-36
MODEL
@I@~@~@
RGX305.405
220.230.24OV
RGX505
220,230,24OV
RGX305D.
405D
RGX305.405
110,120v
i
0
BROWN
ORANGE
1 WHITE
BROWN
: ORANGE
! WHITE
I
’ BROWN
’ ORANGE
WHITE
!
I
3
@
0
@
@I
@
-
BROWN
GREEN
WHITE
RED
RED
-
RED
WHITE
RED
’ BROWN
GREEN
WHITE
RED
RED
YELLOW
i BLACK
1
BROWN
GREEN
WHITE
RED
I
i
I
Table 10-6
-58-
11. TROUBLE-SHOOTING
When the generator is in trouble, check carefully the trouble part and remedy it.
(I)
(Cause)
YES
Replace.
Wrong wiring or some
leads unconnected.
Win? checked?
(Remedy)
Wire correctly.
1 OK
Replace
a
exciting
Replace
AVR.
Resistance outside
range of 5 -7.5X2
Slip ring defective
Resistance outside
range of 5 -7.5a
resistance
Clean,
replace.
Check,
replace.
Field coil short
Replace.
Main coil broken
Replace
stator.
Sub coil broken
Replace
stator.
Replace
AVR.
in 9-l .I
AVR
- 59 -
broken
coil.
Voltage too low
(Remedy)
Kau!w)
In case AC voltage is less than lOV,
voltmeter
needle should not deflect.
Rpm unadjusted
Rpm too low
t
l
Adjust.
l
Wire correct.
l
Adjust.
Field coil shorted
0
Rotor replace.
Slip ring defective
0 Clean, replace.
Wrong wiring
loose wire joints
I
OK
1
Resistance less
than 4a
NG
OK
Brush defective
l
Check, replace.
Main coil shorted
0
Stator replace.
Sub coil shorted
l
Stator replace.
OK
OK
AVR broken
- 61 -
l
Replace.
12. OPTIONS
An electric starter, casters,and other parts are availableas options for the RG.X Series.The use of optional parts may
require addition or changeof parts. The assemblyand disassemblyproceduresto be followed in using optional parts are
describedbelow.
12-l
ELECTRIC
STARTER
All generatorswith an electric starter are maker options becausethe crankcaserequiresspecialadditional processing.
The engineparts to be changedfor the electric starter specificationsinclude the crankcase,ring gear, andstartingmotor. For
thesemain engineparts, refer to the Robin GasolineEngineService&m.ral. The engineparts andgeneratorpartsexclusive
to the RGX Seriesareexplainedbelow.
12-l-l EXCITING COIL
The standardmodels have two wires for primary exciting, but oneswith an electric starter havetwo additional wires for
battery chargingfor a total of four wires.(Fig. 12-1)
FOR PRIMARY
49)
EXCITATION
Le
J
’
STANDARD
ELECTRIC STARTER
FOR PRIMARY
EXCITATION
RGX305, RGX305D - BROWN WIRE
RGXa5, RGX405D _ YELLOW WIRE
RGX505, RGX505D
FOR BATTERY
(GREEN/WHITE
CHARGING
WIRES)
TYPE
Fig. 12-I
12-l-2
SPEED CONTROL
BRACKET
The speedcontrol bracket now has no stop button. Instead, a key switch is provided for stopping the engine.A label is
pastedwherethe stop button waslocated. (Fig. 12-2)
-
LABEL
ADDED
LABEL (CONTROL),
ip-
BRACKET
Fig. 72-2
- 63 -
SAME AS BEFORE
12-1-3
CONTROL
BOX (on ENGINE
SIDE)
1) RGX305,305D
A control box such as shown in Fig. 12-3 (1) is installedon the crankcaseoppositeto the carburetor;anda magnetic
switch and diode rectifier are provided.The cylinder headis providedwith a bracket and an ignition coil.
&xlOmm
BOLT: 1 PC.
SPRING WASHER
LABEL-0
I
I’
i
COVER COMPL.
/
CONTROL
_
, SPRING WASHER
BOX
GROMMET
MAGNETIC
SWITCH
SPRING WASHER
BOLT: 2 PCS.
5@ NUT: 2 PCS.
‘ERY (+I
TO STARTING
MOTOR
Fig. 12-3 (1)
BRACKET
Fig. 12-3 (21
-64-
2)
RGX405, RGX405D, RGX505, RGX505D
A control box such as shown in Fig. 12-4 is installed on the crankcaseoppositeto the carburetor.A magneticswitch
and diode rectifier areinstalled.
/
B@x 12 SCREW: 1 PC.
B@xBmm
FLANGE BOLT: 2 PCS.
B@xlZmrnd
: BOLT: 2 PCS.
SPRING WASHER
\
DIODE RECTIFIER
)\
MAGNETIC
SWITCH
GROMMET
TO KEY SWITCH
CONTROL
BOX COMPL.
9 TO BAlTERY
TO STARTING
(+)
MOT0
RED
Fig. 12-4
12-l -4 STRAINER
BRACKET
The strainer bracket hasbeenchanged,andnow hasa key switch. The key switch is wired to the control box (on the engine
side).(Fig. 12-5)
- 65 -
KEY SWITCH
NUT
I
CONTROL BOX
(TO ENGINE SIDE)
/
TO CONTROL
I
STRAINER
BOX
STRAINER
BRACKEi
Fig. 12-5
AfOE:
Be sure to ground the earth terminal on tie key switch to tie generator or engine body. If the key switch is not
correctly
grounded,
the engine will not stop.
12-l -5 CLAMP
The wire connectingthe key switch to the control box is fastenedwith the clampbolted to the main bearingcover.(Fig.
12-6)
CLAMP
Fig. 12-6
- 66 -
12-l-6
FRAME
(RGX305and
RGX305D
ONLY)
Only the RGX305 and RGX305D have a frame of different width from before. The framesfor the RGX405, RGX405D,
RGX505, and RGX505D remainunchanged.
RGX305,305D
STANDARD
ELECTRIC START
W - 456 mm (18.0 inch)
W - 486 mm (19.1 inch)
Fig. 12-7
12-l-7
CIRCUIT
DIAGRAMS
BLACK
1-A”
- or-3
r-?
ii(CDISIU1;
I
I
;
I
RFn
&KEY
SWITCH
1
, orKTR)/
I
I
I
i
i
BATTERY
!
- BROWN
-YELLOW
STARTING
CONTROL BOX
(ENGINE SIDE)
MAGNETIC
SWITCH
Fig. 72-8
- 67 -
MOTOR
12-2 CASTER
1) The casterbaseis fitted with rubber casters75 mm in diameter,and the casterbaseis bolted to the frame.
2) The framemust be drilled to openholesfor mounting the casterbase.
3) The RGX 305 and RGX305Dhavea frame 30 mm wider than the standardframeasmentionedin 12-l-6.
4) The RGX405, RGX405D, RGX505, and RGX505Dhavespacersplacedbetweenthe frame andcasterbase.
I
\
CASTER
Fig. 12-9
-68-
CASTER BASE
13. CIRCUIT
RGX305
RGX405
RGX505
DIAGRAM
(220V-23OV-24OV)
(22OV-23OV-24OV)
(22OV-23OV-24OV)
pf
I
TFC
‘y--$--p&
I
pc
/,~~--$@jb
--
; i
BLUE
1
;Kz
II
I
---
--
CONTROL
GENERATOR
~jExc
‘-‘“J/[
--
BOX
j
-- J
ENGINE
0
‘11
RGX305D
RGX405D
RGX505D
11 “=&
==
RECEPTACLE
is equipped only for RGX505.
(110/22OV-120/24OV)
(110/22OV-120/24OV3
(50Hz-120/240VI
REC,
11 p$$J$~pi
/GREEN
I i”rr\!
GENERATOR
,IutiANGE
: mr)r..nIII. ’
* i
1 I
;
SIU
i III
:I ,:
’j
!A ’
i
1
-+T
c
CONTROL
BOX
- 69 -
~~ ~~
ENGINE
RGX305
RGX405
(I IOV-I 2OVl
(IlO-12OV)
--j APT
--___
7
---If--
--
I
pETa
REC,
REC,
‘0’
I
I
11
“I”
;
i
*Y
-
i
u
F
o-T
I
-__
--
GENERATOR
RGX505D
E
I
IGREEN
A+T
!
Im
ILtiLUE1
--
c\
I I
CONTROL
BOX
ENGINE
---
;;~m&,v,240v
---
BLACK/
--1
I-I
! i
-O’m
;EPSw
REC,;
I iL
11 (
--7-7-r
]
1
!
--
i
d
,G
MG I
---
----
GENERATOR
\EC
!?!I
--
--
CONTROL
--A--
BOX
- 70 -
\
EXC
Y
ENGINE
--
-
I
RGX505
(lIOV-IZOV)
Ly
--
1~
CONTROL
GEN&ATOR
I I
iI
--
__-.I
BOX --
ENGINE
SYMBOLS
l
I
I
I
I
I
Name of Parts
Symbols
MC
AC Winding
SC
Auxiliary
Symbols
I
I
Winding
DC
!
DC Winding
I
FC
’
Field Winding
I
RECs
D
I
F
/
I
Diode Stack Assy
i,
IT!
I
I
1
Name of Parts
4
I
I
I
I
:
Exciting
ExC
1
Excitor
PC
!
Pulser Coil
Coil (Charge Coil)
Coil
I
I
Magneto
SB
!
Stop Button
SIU
]
Solid State Ignition
E
-71-
DC Output Terminal
EC
MG
Fuse
AC Output Receptacle
(22OV/230’.‘/24OV)
Unit
Earth (Ground) Terminal
I
I
1 ISSUE EMD-GS0005
1
@FUJIHEAVY
INDUSTRIES
LTD.
INDUSTRIAL PRODUCTS DIV.
2ND Subaru Bldg.
1-1, Choume, Miyahara-cho,
Omiya-shi, Saitama 330-0038, Japan
PHONE ; (Omiya 48) 653-5811
FACSIMILE ; (Omiya 48) 653-5691
PRINTED IN JAPAN
B303 CE