SERVICE MANUAL
WARNING
This equipment is designed and built with safety in mind. However, your overall
safety can be increased by your full understand followed by the content in this
manual.
Read this manual and familiarize yourself with its contents for your safety.
This equipment should only be operated and maintained by trained and qualified
personnel.
This equipment is designed for generating power source of electric tools, home
appliances and lights.
Do not install, operate or service this equipment without reading this manual and
unless you clearly understand this manual.
Specifications subject to change without notice.
File№ DGO-261_RDA150T3
This service manual is edited for authorized person to perform repair,
maintenance, and trouble-shooting to Diesel Engine Generator Welder,
Model Designation RDA150T3.
It is inevitably necessary to maintain and adjust Red-D-Arc products
periodically in order to use fully and safely for long time. Therefore,
understand this service manual fully enough before use and proper
maintenance.
The information contained in this service manual describes equipment
available at the time of publication. While every attempt has been made to
give you the very latest information about your product, there may be some
differences between your equipment and the equipment described in this
manual. We reserve the right to make changes to equipments without prior
notice, and without obligation to make alterations to equipments previously
manufactured.
For service of the engine, refer to Workshop (Service) Manual provided by
the engine manufacturer described below.
MANUFACTURER
MODEL
KUBOTA V3800DI-TI
Table of Contents
1. Attention Statements
·· ··· ····· ··· ··· ····· ··· ········ ··· ····· ··· ··· ······ ····· ··· ··· ····· ··· ··· ·····
1
2. General Safety Instr uctions
·· ····· ··· ····· ··· ··· ····· ··· ··· ····· ··· ········ ······ ··· ··· ····· ···
2
3. Specifications
··· ··· ····· ··· ··· ····· ··· ··· ····· ··· ····· ··· ··· ··· ··· ····· ··· ··· ····· ··· ··· ····· ··· ········ ··
4
4. General
·· ··· ····· ··· ··· ····· ··· ········ ··· ····· ··· ··· ······ ····· ··· ··· ····· ··· ··· ····· ··· ····· ··· ··· ····· ··· ···
5
4-1 Appe aranc e ··········· ··········· ··········· ····· ··········· ··········· ········ ··········· ······· 5
4-2 Dimension ·········· ··········· ········ ················ ··········· ··········· ··········· ·········· 5
5. General Parts Description
········· ··········· ··········· ········ ················ ······· 7
5.1 Equipment ·· ··········· ··········· ··········· ····· ··········· ··················· ··········· ······· 7
5.2 Main Parts and Feature ·········· ··········· ········ ··················· ··········· ··········· ·· 10
5.3 Main Component ······· ··········· ················ ··········· ··················· ··········· ····· 10
6. Ser vice Data
····· ··· ····· ··· ··· ····· ··· ··· ····· ··· ····· ··· ··· ··· ··· ····· ··· ··· ····· ··· ··· ····· ··· ········ ··
13
6.1 Servi ce Data ······· ··········· ················ ··················· ··········· ··········· ·········· 13
6.2 Genera tor ·········· ··········· ··········· ················ ··········· ········ ··········· ··········· 14
7. Tightening Torqu e
·· ··· ····· ··· ··· ····· ··· ····· ··· ··· ····· ··· ··· ····· · ····· ··· ··· ····· ··· ········ ··· ····
17
8. Periodical Check for Engine
········ ··········· ··········· ········ ··········· ····· ····· 19
9. Trouble Shooting
·· ····· ··· ··· ····· ··· ····· ··· ··· ····· ··· ··· ····· ······ ··· ··· ····· ··· ········ ··· ····· ··· · 20
10. W iring Diagram
········ ··········· ··········· ········ ··········· ····· ··················· ···· 22
1
1. Attention Statements
・Technicians only who own enough knowledge and experience should work for
maintenance and operational check after maintenance.
・Before maintenance, always read this service manual as well as owner’s manual and
familiarize contents thoroughly before starting the service and maintenance of the
equipment for understanding of the equipment, safety instructions and cautions.
・
Throughout this manual are special attention statements.
A statement preceded by the triangular attention symbol and the word “WARNING”
contains information that should be acted upon to prevent serious bodily injury.
A statement preceded by the triangular attention symbol and the word “CAUTION”
contains information that should be acted upon to prevent mechanical damage.
WARNING
CAUTION
2
2. General Safety Instructions
ELECTRIC SHOCK
NEVER touch the output terminals
during operation
NEVER touch the output terminal during
operation even though the breaker on the
load is being set at “OFF” position.
ALWAYS stop engine and make sure it
stopped before you will connect the loads to
the output terminals.
Suffocation by exhaust gas
NEVER run the engine indoors! Make
sure there is always good ventilation.
Fumes from engine exhaust cause
serious injury.
ALWAYS operate the equipment in the
ventilated area.
When the equipment is used in a tunnel, hall
or any other indoor, the equipment for
ventilation must be used to prevent serious
accident caused by suffocation.
NEVER direct the exhaust fume to
houses nearby while considering the wind
flow direction.
Exhaust gas contains many harmful
elements that would cause affect to human.
Be free from suffocation when the
equipment is used in poorly ventilated area
such as inside of the building.
Entangled Injuries under
By Moving Componen
t
NEVER reach and touch the moving
component during operation!
ALWAYS stop the engine during inspection
to prevent serious bodily injury by entangled
accident under moving component.
Electric shock/Injuries/Burns
Never inspect equipment during
use
.
Never serve and inspect when equipment is
being operated.
It may cause electric shock, injuries or
burns.
WARNING-Use good judgment
① NEVER run the engine when
transporting the equipment.
②
ALWAYS stop the equipment
immediately if it suddenly begins to
violate or abnormal noise. Inspect for
broken, missing or improperly installed
parts.
③
ALWAYS keep the equipment as clean
as practical. Keep it free of loose
vegetation, mud, etc.
DO NOT make unauthorized
modifications or alterations to this equipment
of any of its components. YAMABIKO must
authorize alterations and modifications in
writing. Unauthorized modifications or
alterations may alter the equipment
operation and could jeopardize personal
safety during operation.
WARNING
3
Work Safely
Generators and welders operate at very high
speeds and can do serious damage or
injury if they are misused or abused. Never
allow a person without training or instruction
to operate and serve this equipment!
Attention to CAUTION LABEL！
Caution labels are placed on this equipment
and it would request special attention for
operation. Make sure to locate the labels
and understand the content of the caution.
・Check the caution labels is legible. Always
keep the labels clean or replace them when
worn or damaged
・Clean the labels by cloth, water or
detergent and never use organic solvent or
gasoline which may cause label peel off due
to adhesive solvent.
・Make sure to replace the labels when
damaged and illegible.
Before replacing the label(s), make sure to
place the new label(s) in the same position.
STOP the equipment immediately when
abnormal circumstances are noticed!
STSTOP the equipment immediately whenever
abnormal circumstances are noticed such
as unusual noise, smell, vibration and etc.
It may lead serious accident or fatal damage
of the equipment or properties.
Inflammables！
Keep the equipment far away from fire such
as cigarettes when refueling fuel, oil or
battery fluid.
NEVER operate or service the equipment
nearby fire as the equipment may catch
fire.
No Modification！
NEVER modify the equipment without
manufacturer’s advanced approval. .
It may lead serious safety issue and damage
the equipment.
Inspect the equipment before engine
start for operation and periodical inspection
without fail！
Make sure to serve initial check before start
engine and periodical inspection for safety
and longer life of the equipment.
CAUTION
3. Specifications
Model Unit RDA150T3
Alternator
Generating Type -
Rotating Filed, Brushless 3-Phase
Synchronous Alternator
Rated Output
kVA 150
kW
120
Voltage – Three phase V 208 / 480
Voltage – Single phase V 120 / 240 / 277
Amps
Three phase – 480V A 180
Three phase – 208V
A
416
Single phase – 240V
A
361 (zigzag)
Single phase – 120V
A
361 x 2 (zigzag)
Rated Frequency Hz 60
Winding -
3-phase, 4-wire
Star with neutral / Zig-zig
Power factor % 80
Insulation class - F
Excitation - Self-Excitation(Brushless)
No. of poles - 4
Engine
Types - Vertical Water-cooled 4-cycle Diesel Engine
Model (Manufacturer) - 6HK1 (ISUZU)
No. of Cylinders (bore x stroke) (in. / mm) 6 ( 4.53x4.92 / 115x125 )
Continuous rated output
kW 142
HP
190
Rated speed
rpm
1800
Displacement cu.in. / liters 475.4 / 7.790
Combustion system - Direct Fuel Injection with Turbo Charger
Cooling method - Radiator
Lubricating method - Forced lubrication
Starting method - Electric start
Fuel - Diesel
Lubricant oil - CD class
Fuel tank capacity gal. / liters 74 / 280
Lubricant volume (Full)
gal. / liters
10 / 38
Cooling water volume
gal. / liters
6.3 / 23.8
Starting motor capacity V-kW 24 – 5.0
Charging dynamo capacity V-A 24 - 50
Battery - 105E41R x 2
Battery capacity V-AH 12(V) – 100AH
Unit
Length
in. / mm
135.8 / 3450
Width
in. / mm
48.8 / 1240
Height
in. / mm
72.8 / 1850
Dry Weight
lbs. / kg
6504 / 2950
Installed Weight
lbs. / kg
7187 / 3260
**Specifications subject to change without notice.
4
4. General
4.1 Appearance
4.2 Dimension
Unit in the drawings below is shows by mm.
5
6
5. General Parts Description
5.1 Equipment
7
8
9
5.2 Main Parts and Feature
(1) Unit Serial Number
(2) Engine Serial Number
5.3 Main Component
10
Provide both serial number of unit and engine to your
local service shop for update parts and warranty
information.
Circuit Breaker
Feature: Protect electrical
circuit from damage by
overload or short circuit.
M
onitor Lamp
Feature: Light a monitor
lamp when equipment is
malfunctioned.
Volt Meter Selector Dial
Feature: Dial to change
voltage.
Water Temp. Meter
Feature: Display water
temp. in the radiator.
Fuel Meter
Feature: Display volume of
the fuel left in the fuel tank.
Oil Pressure Meter
Feature: Display oil pressure.
Emergency Stop Button
Feature: Engine stops when emergency by
pressing it. Turn it to clockwise to release
the button.
Ampere Meter Selector Dial
Feature: Dial to select the
output current.
Voltage Adjusting Dial
Feature: A dial to adjust a
voltage.
Right Side Door
Left Side Door
Terminal Rest
Feature: Relay terminal block of
the power output from the
alternator.
11
Fuel Drain Plug
Feature: Drain the old fuel from the
fuel tank.
Oil Drain Plug
Feature: Drain the old oil from the oil
tank.
External Fuel Inlet
Feature: Inlet to refuel from the
external tank.
External Fuel Return
Feature: Outlet to return fuel
from external tank.
Standard Accessory
① Owners Manual 1 copy
② Engine Instruction Manual 1 copy
③ Engine Warranty Manual 1 copy
④ Starter Key 1 set (2 pcs)
12
3-Way Valve
Position A (to use a built-in fuel tank)
Position the 3-way valve lever to UPWARD to use
fuel from the external fuel tank.
Position B (to use an external fuel tank)
Position the 3-way valve lever to DOWNWARD to
use fuel from a built-in fuel tank.
Note: The 3-way valve lever is set at position A at
delivery from a factory.
Position A
Position B
3-Way Valve
Lever
Note:
Do not remove the plugs when fuel is
supplied from a built-in tank. (when the 3-way
valve positions at position A.)
3-Way Valve
Feature: Valve to change fuel supply from a
built-in or external tank.
6. Service Data
ELECTRIC SHOCK
WARNING
Never touch the output terminal during operation to avoid electric
shock. Always stop the engine and remove the starter key during a
service maintenance.
Stop the engine before you will start any maintenance!
6-1 Technical Specification
Items Reference Value Note
Insulation
Armature
winding
3MΩ or more
DC500V
Megger Tester
Exciter field
Preheat time
Approx. 20 sec. with coolant temperature
-15℃(5
°F)
and approx. 1 sec. with coolant
temperature 30℃(86
°F)
Automatic
preheating system
Min. rpm at no load 1000±25 min-1
Max. rpm at no load 60Hz: 1800±25 min-1
Lubricant oil pressure 0.2~0.6MPa{2.0~6.1kgf/cm²}
Coolant temperature
75~90℃ (167~194
°F)
Frame temperature limit
within 115℃ (239
°F)
Sealed bearing temperature limit
within 70℃ (158
°F)
Speed regulation Momentary
within 10%
Steady-state
deviation
within 5%
Voltage regulation
Momentary
within 20%
Steady-state
deviation
within 1.0%
Frequency Idle: 33.3 Hz, Rated: 60 Hz
Variable voltage (60Hz)
400~505V at 60±0.1Hz
Protective device
1
Low oil pressure
Working Pressure 0.1MPa{1.02kgf/cm²} Engine Stop
2
High water temp.
Working Temperature 105℃ (221
°F)
Engine Stop
3
Diagnosis
Engine Malfunction - -
4
Insufficient Battery
Charge
- Battery voltage: below 8V -
5
Over Speed
- above 2070 min-1 Engine Stop
6
Boost
Intake Temperature 85℃ (185
°F)
-
13
6-2 Generator
(1) Exciting Amperage
Amperage fluctuates based upon the winding temperature. Following is for reference only.
Frequency/Rated Output Load Exciting Amperage (Measured)
3-Phase 60Hz: 120 kW
No load 0.57A
Full load( power factor=1.0) 1.04A
(2) Resistance Value
Nominal resistance of the winding is tolerated within ± 10% at 32
°F(
220℃) of the ambient temperature.
The resistance must be measured by low resistance tester. It can not be measured by multi-purpose
tester cause of index error.
Generator Exciter (Measured)
Stator Rotor Stator Rotor
Armature Exciter Winding
J－K
Armature
Between
T1-T4, T7-T10
T2-T5, T8-T11
T3-T6, T9-T12
- -
0.048Ω 1.574Ω 14.96Ω 0.185Ω
[Color Code]
(B) (W) (R) (G) (Y) (Br) (L) (Or) (Gr)
Black White Red Green Yellow Brown Blue Orange Gray
(3) Technical Specifications
Items
Article Method Condition to verify Criterion
Check before operation
Shape, Dent, Blot
Visual
Inspection
No dent, blot and deformation
Coating No looseness
Joint Meet the criteria
Oil, Coolant Meet the required level
Wiring
Lead wires to be securely fastened
against
abrasion and damage to bring by
vibration
Grounding
Continuity Tester
“GROUNDING” is connected;
-with Engine (bolt for grounding)
-with Bed (bolt for grounding)
-with grounding for Receptacle
Continuity is to be confirmed
I
nsulation Check
Insulation Resistance
DC500V
Mega
Tester
Main Breaker ON.
1-phase breaker (50A) ON
1-phase breaker (20A) OFF
Disconnect one coupler from the
stator.
Voltage Selector: 480V (3-phase)
- Remove all output lines connecting
to “T10 & T11” in terminal rest.
- Remove the output line “T12” from
the terminal rest.
-Open a pc terminal in the output line
“U2” from the stator.
*Insulate all terminals after removal
Over 3MΩ
Dielectric Voltage Tester
AC2400V (1 sec)
Electric Current: 10mA
14
Items
Article Method Condition to verify Criterion
Insulation
Check
Dielectric Voltage Tester
Connect “grounding terminal”
- with output terminal “L1”.
- with output terminal “L2”
- with output terminal “L3”.
- with initial excitation winding.
(Coupler marked with “J” or “K”.)
ditto
Monitor
Glow & Monitor Lamp
(OIL PRESS,
WATER TEMP,
ENGINE, AIR
FILTER & FUEL)
Visual
Inspection
Starter Switch
“RUN”
position
Coolant Temp:-15~50℃ (5~122°F )
Glow Lamp & Charge Lamp ON. DIAG (diagnosis) lamp
OFF after it turns on for a while. Hour Meter is activated.
Engine is
running.
All monitor lamp OFF. Pilot lamp ON. Hour meter is
activated.
Protection Circuit
Emergency Stop
Engine is
running
Emergency stop switch ON and engine stops.
Water Temp.
Short-circuit red/black and black/yellow lines connecting
to a water temp. sensor. Overheat lamp ON and engine
stops.
Thermal Relay
Engine Stop
Thermal relay is set at 3.6A. Breaker ON and thermal
relay RESET.
Engine is
running
Turn test trip lever to “TRIP”. Main breaker lever trips
between ON and OFF position.
Terminal Cover
Safety Feature
Open 3-Phase output terminal cover. Main breaker lever
trips between ON and OFF position.
Operational Check
Phase rotation
Phase
Rotation
Indicator
Rotate as arrow shows
AVR Adjustment
AC Volt
Meter
Output selector switch is
set at 2080V (3-phase)
No Load
Voltage Adj. Dial: Max
Frequency (Hz)
Output (V)
60±0.1
253±1
*Adjust the Volt Adjusting
Volume in AVR. (#1)
3-Phase Output
(Comprehensive
Voltage Regulation)
Load Tester
Frequency
Meter
Wattmeter
Stop Watch
Engine Speed 1800
min
-1,
Engine Control Switch Setting:
-
Load Advance: OFF
- Regulation Mode: OFF:
Output selector switch is
set at 480V. (3-phase)
Output: 120
±1.2kW
Voltage: 480+/-1V
Frequency: 60
±0.1Hz
Power Factor: 1.0
Throttle Switch: RUN
% kW V A Hz
100 120+/-1.2 480±1 (1.04)
60
±0.1
75 90+/-0.9
480±6
(0.88)
60±0.2
50 60+/-0.6 (0.72)
25 30+/-0.3 (0.60)
0 no load (0.57)
3-Phase Output
(Transient Load
Change Excursions)
Output selector switch is
set at 280V. (3-phase)
Output: 120±1.2kW
Voltage: 240+/-1V
Power Factor: 1.0
Throttle Switch: RUN
Refer to #2
1-Phase Output
AC Volt
Meter
Output selector switch is
set at 240/120V.
(3-phase)
Voltage: 240+/-1V
Frequency: 60±0.1Hz
No
Load
Receptacle
Voltage (50A) X-Y
240±3V
GFCI Receptacle
Output
120±2V
3-Phase Output
Voltage Adjustment
Output selector switch is
set at 480V. (3-Phase)
Voltage Max. (V) Voltage Min. (V)
over 504 below 408
Engine Speed
Adjustment
Digital
Tachometer
Adjust the engine control
switch at no load.
Idle Speed
(min-1)
Engine Speed
Adjustment (Hz)
1000±25
below 50~above 63.
15
#1:
#2:
Mode Output Voltage (V) Setting Time Frequency (Hz)
Setting Time
Loaded No Load
(Transient Max.)
below 288 below 2 sec. below 66 below 8 sec.
No Load 240+/-3 - 60+/-0.2 -
No Load Loaded
(Transient Min.)
over 192 below 2 sec. over 54 below 8
Loaded 240+/-3 - 60+/-0.2 -
Use screw locking glue (recommended ThreeBond 1401C) over the VRD
and VRE after adjusted.
VRE VRE
ＶＯＬＴ.ＡＤＪ
16
7. Tightening Torque
No Nomenclature
Part to
be
tighten
Size Qty
Torque
Allowance
Nm(kgf/cm)
Reference
1 Drain Plug~Socket
Drain
Plug
M24
(fine pitch)
1
68.7-88.2
(701-899)
Put a lubricant to
O-ring and align
it into a groove.
2 Socket~Oil Pan Nipple ditto 1
49.1-58.8
(501-599)
ditto
3 Cushion~Bonnet Screw M4x30 8
1.0-1.4
(11-14)
4 Panel~Front Door
Nut M5 8
2.0-2.9
(500-571)
5 Stay~Engine Bolt M10x30 8
39.4-58.0
(402-591)
6
Rotor~Engine
(flywheel side)
Bolt M10x30 8
44.2-53.9
(451-549)
7 Stator~Engine Bolt M10x30 12
44.2-53.9
(451-549)
8 Bolt~Plate Nut M16 5
58.9-68.6
(601-699)
9
Terminal
Cover~Bonnet
Bolt M10x35 2
10.6-15.2
(109-154)
10 Radiator~Frame Bolt M12x50 4
20.8-30.4
(213-309)
Uniformly tighten
the bolts.
11
Exhaust
Pipe~Engine
Nut
M10
(fine pitch)
8
30.5-45.1
(312-459)
12
Flex.
Tube~Exhaust
Pipe
Bolt M16x65 4
122.6-181.4
1251-1849)
13
Fuel Tank~Frame
(bed)
Bolt M8x70 2 -
There should be
no rattles in fuel
tank.
14 Elbow~Valve Elbow - 2 -
Attention to the
direction for
installation of the
elbow.
15 Valve~Frame (bed)
- - -
Attention to the
direction for
installation of the
elbow.
16 Pipe~Fuel Strainer Eye Bolt
M16x1.5 4
39.3-49.0
(401-499)
Attention to the
direction for
installation of the
pipe. Insert the
packing into both
side of the pipe.
Put a lubricant.
17 Fuel pomp~Frame
- - - - Put a lubricant.
18 Fuel Pomp~Frame
- - - -
Attention to the
direction of the
fuel pomp.
19 Joint~Oil Strainer Joint G3/4 2
54.2-63.9
(553-651)
Attention to the
direction of the
joint. Put a
lubricant.
17
No Nomenclature
Part to
be
tighten
Size Qty
Torque
Allowance
Nm(kgf/cm)
Reference
20 Joint~Engine Joint G3/4 2
54.2-63.9
(553-651)
ditto
21 Hose,14~Joint Hose, 14
G3/4 2
107.9-127.4
(1101-1299)
Attention to
piping for inlet &
outlet.
22 Air Cleaner
Cleaner
Band
Attention to the
direction of the
air cleaner
intake.
23 Plug~Engine Plug M10 1
19.0-25.0
(194-254)
18
8. Periodical Check for Engine
●Consult Service Dealer ○User Check
Description
Daily
check
Every
250hrs
Every
500hrs
Every
1000hrs
Engine Side
Clean each parts / tightening ◯
Engine oil checks / add oil ◯
Engine oil and Oil Filter change
◯
(1st time at 50 hrs)
◯
PCV Filter change
◯
(1st time at 50 hrs)
◯
Coolant level check / add coolant ◯
Exhaust color check ◯
Coolant change / bleeding EGR
◯
or 1 yr.
Drain excess water and sediments in
the fuel filter and water sedimenter
◯
◯
Clean
Clean or replace fuel filter element and
water sedimenter element
◯
Clean
◯
Replace
Drain water from fuel tank ◯
Clean gauze filter in engine feed pump
◯
Clean
Change filter in the electromagnetic
pump for air extraction in fuel line
◯
Clean
Clean inside fuel tank ●
Leak check (fuel, oil, and coolant) ◯
Replacing fuel hose
●
or 1yr.
Clean or replace air cleaner element
◯
Clean
◯
Replace
Battery fluid level check ◯
Battery hydrometer check ◯
Fan belt check ◯
Radiator Flush Cleaning ●
Check and adjust engine valve
clearance
●
Compression check ●
Alternator side
Various meter and alarm lamps check ◯
19
9. Trouble Shooting
9.1 Generator
＜Pre-check＞ Always check the volume of oil, coolant, and fuel before processing to
trouble shooting.
Problem Suspected Cause Action
Engine does not start
Starter motor
does not drive
or speed is low.
1. Battery output is weak
2. Battery is deteriorated
3. Battery terminal is OFF or loose
4. Battery terminal is corroded
5. Starter switch or relay is defective
6. Starter motor is defective
7. ECU(Engine Controller) is defective
1. Check/ battery liquid/ or Charge
2. Change battery
3. Fix/Tighten terminal
4. Clean terminal
5. Contact your distributor to repair
6. Contact your distributor to repair
7. Contact your distributor to repair
Starter motor
drives but
engine does
not start
1. Fuel is insufficient
2. Fuel filter is clogged
3. Gauze filter is clogged
4. Water is interfused in fuel line
5. Air is interfused in fuel line
6. Poor piping connection to external fuel
tank
7. Fuel tank selector lever (3-way valve)
position is wrong
8. Fuel cut solenoid (motor) does not
work
9. Emergency operation/Fault detection
1. Add fuel
2. Clean/Change fuel filter
3. Clean/Change gauze filter
4. Drain water in water sedimenter,
fuel filter or fuel tank
5. Extract the air
6. Check piping connection
7. Check lever (3-way valve)
8-1. Check/Change fuse
8-2. Check/Change fuel cut solenoid
9. Contact your distributor to repair
<Ambient
temperature
falls down
below zero>
1. Fuel is frozen
2. Water in fuel line is frozen
3. Pre-heater is defective
1. Use winterized fuel
2. Drain water in fuel line
3. Contact your distributor to repair
Engine starts but
stalls immediately
1. Fuel filter is clogged
2. Gauze filter is clogged
3. Water is interfused in fuel line
4. Air is interfused in fuel line
5. Poor piping connection to external fuel
tank
6. Air filter element is clogged
7. Lubricant oil is insufficient
8. Emergency operation/Fault detection
1. Clean/Change fuel filter
2. Clean/Change gauze filter
3. Drain water in water sedimenter,
fuel filter or fuel tank
4. Extract the air
5. Check piping connection
6. Check/Change air filter element
7. Supply lubricant oil
8. Contact your distributor to repair
Engine oil pressure
is low
1. Lubricant oil is insufficient
2. Oil filter is clogged
3. Oil Pressure switch is defective
4. Oil pressure meter is defective
5. Wrong oil is used
1. Supply lubricant oil
2. Change oil filter
3. Contact your distributor to repair
4. Contact your distributor to repair
5. Change to proper kind and
viscosity oil
Overheated 1. Engine thermostat is defective
2. Water temp sensor is defective
3. Water temp meter is defective
4. Fan belt tension is weak
5. Coolant is insufficient
6. Radiator core is clogged
1. Contact your distributor to repair
2. Contact your distributor to repair
3. Contact your distributor to repair
4. Check/Adjust fan belt
5. Check/Supply coolant
6. Clean radiator core
20
Problem Suspected cause Action
1. Air filter element is clogged
2. Fuel injection nozzle is defective
3. Improper fuel is used
1. Check/Change air filter element
2. Contact your distributor to repair
3. Change to clean fuel
White smoke comes
out from muffler
1. Too much or too little oil to cylinder
2. Water is interfused in fuel line
3. Fuel injection nozzle is defective
4. Coolant temperature is too low
5. Engine thermostat is defective
1. Contact your distributor to repair
2. Drain water in water sedimenter,
fuel filter or fuel tank
3. Contact your distributor to repair
4. Warm-up driving is needed
5. Contact your distributor to repair
Indicator does not
move in voltage meter
1. Voltage meter is defective
2. AVR is defective
3. Disconnected circuit, loose terminal
or departed
4. Initial exciter is defective
5. Alternator is defective
1. Contact your distributor to repair
2. Contact your distributor to repair
3. Contact your distributor to repair
4. Contact your distributor to repair
5. Contact your distributor to repair
Indicator does not
goes up to the
rated voltage
1. Voltage meter is defective
2. AVR is defective
3. Voltage regulator dial is defective
4. Frequency is low
5. Improper load cable connection
6. Voltage selector switch set is wrong
1. Contact your distributor to repair
2. Contact your distributor to repair
3. Contact your distributor to repair
4. Contact your distributor to repair
5. Correctly set the connection
location to the output terminal
6. Set the Voltage selector switch
correct
Indicator exceeds the
rated voltage
1. Voltage meter is defective
2. AVR is defective
3. Voltage regulator dial is defective
4. Frequency is high
5. Improper load cable connection
6. Voltage selector switch set is wrong
1. Contact your distributor to repair
2. Contact your distributor to repair
3. Contact your distributor to repair
4. Contact your distributor to repair
5. Correctly set the connection
location to the output terminal
6. Set the Voltage selector switch
correct
The voltage drops
drastically when
connecting to load
1. AVR is defective
2. Unbalanced loads sharing to each
terminal
3. Total loads exceeds the rated current
4. Frequency Speed Switch set is wrong
1. Contact your distributor to repair
2. Balance the loads sharing to each
terminal
3. Decrease the loads with in the
rated output
4. Set the Speed Switch correct
Cannot turn the
breaker to ON position
1. The breaker positions stays between
ON and OFF
2. Short circuit on the load
3. Terminal cover opened
4. The thermal relay activates
1. Turning the lever to OFF first then
turn it to ON position
2. Check the load circuit
3. Close terminal cover
4. Reset the thermal relay
21
10. Wiring Diagram
22
23
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reddarc.com
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