Kubota SQ-1120, SQ-3140, SQ-1150, SQ-3200, SQ-3300 Operator's Manual

K UBOT A

WARNING

To prevent electrical shock the following instruction must be followed.

Before the generator can be connected to a building’s electrical system, a licensed electrician must install an isolation (transfer) switch in the building’s main fuse box. The switch is the connection point for generator power and allows selection of generator or main line power to the building. This will prevent the generator from charging the main power line (backfeeding) when the main power supply has failed or has been turned off for line repair. Backfeeding can electrocute or injure line maintenance personnel. Also, generator and building electrical system damage can occur when normal operating power returns if unit is used without an isolation switch.

FOREWORD

You are now the proud owner of a KUBOTA Diesel Engine Generator. This generator is a product of KUBOTA quality engineering and manufacturing. It is made of fine materials and under a rigid quality control system with correct maintenance. It will give you long, satisfactory service. To obtain the best use of your generator, please read this manual carefully. It will help you become familiar with the operation of the generator and contains many helpful hints about generator maintenance. It is KUBOTA's policy to utilize as quickly as possible every advance in our research. The immediate use of new techniques in the manufacture of products may cause some small parts of this manual to be outdated. KUBOTA distributors and dealers will have the most up-to-date information. Please do not hesitate to consult with them.

SAFETY FIRST

This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully. It is essential that you read the instructions and safety regulations before you attempt to assemble or use this unit.

DANGER : Indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

WARNING : Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation which, if not

avoided, may result in minor or moderate injury.

IMPORTANT : Indicates that equipment or property damage could result

if instructions are not followed.

NOTE : Gives helpful information.

CONTENTS

SAFE OPERATION ..................................................................................................1

SERVICING OF GENERATOR........ ............................................................................1

SPECIFICATIONS .......................................................................................................2

Part Names ......................................................................................................................3

INSTRUMENT PANEL AND PART NAMES................................................................4

Control Panel......... ....... ....... ............................................................... ....... ....... ....... ......... 4

Control Box................... ....... ....... ............................................................... ....... ....... ......... 5

PREPARATION TO SUPPLY THE ELECTRIC POWE R.............................................6

CONNECTING THE LOAD... .......................................................................................8

Connection Notes............................................................................................................. 8

Connecting the Load ........................................................................................................ 8

PRE-OPERATION CHECK.............. ..........................................................................10

DAILY CHECK........................................................................................................10

How to Open the Door.................................................................................................... 10

Battery............................................................................................................................10

Engine Oil.......................................................................................................................11

Coolant...........................................................................................................................11

Opening and Closing of the Fuel Tank Cap ...................................................................11

Fuel ................................................................................................................................12

OPERATING THE GENERATOR............................ ..................................................13

SAFETY DEVICES.................. ... ............................................................................13

STARTING THE ENGINE ......................................................................................14

Warm-up in Cold Ambient Temperatures.......................................................................15

COLD WEATHER STARTING ...............................................................................16

STOPPING THE ENGINE ......................................................................................17

EMERGENCY STOP SWITCH ..............................................................................18

MAINTENANCE.........................................................................................................19

SERVICE INTERVALS...........................................................................................20

PERIODIC SERVICE. ................................................................................................22

FUEL ......................................................................................................................22

Fuel Level Check and Refueling .................................................................................... 22

Air Bleeding the Fuel System......................................................................................... 23

Cleaning the Fuel Filter Element.................................................................................... 23

Fuel Filter Cartridge Replacement .................................................................................24

Cleaning the Water Separator (Sedimenter).................................................................. 24

Draining Water in the Fuel Tank........ ....... ....... ....... ....... ....... .......................................... 25

ENGINE OIL...........................................................................................................25

Checking Oil Level and Adding Engine Oil.....................................................................26

Changing Engine Oil ......................................................................................................27

Replacing the Oil Filter Cartridge ...................................................................................27

RADIATOR.............................................................................................................28

Checking Coolant Level, Adding Coolant....................................................................... 28

Changing Coolant........................................................................................................... 29

Remedies for Rapid Coolant Loss.................................................................................. 29

Checking Radiator Hoses and Clamps .......................................................................... 30

Precaution Overheating.................................................................................................. 30

CONTENTS

Cleaning Radiator Core (outside)...................................................................................30

Cleaning the Radiator (inside)........................................................................................30

Anti-freeze......................................................................................................................30

AIR CLEANER........................................................................................................31

Cleaning Primary Air Filter Element ...............................................................................32

Evacuator Valve ............................................................................................................. 32

For the Air Cleaner with a Dust Cup............................................................................... 32

BATTERY...............................................................................................................32

Battery Charging ............................................................................................................32

Instructions for Long Term Storage................................................................................34

Battery Boost Starting ....................................................................................................34

ELECTRIC WIRING ......................... ......................................................................34

FAN BELT ... .. .........................................................................................................35

Adjusting Fan Belt Tension ............................................................................................35

FULLY BUNDED ................. .. .................................................................................35

TRANSPORTING / STORAGE..................................................................................36

Transporting ...................................................................................................................36

Lifting Procedure ............................................................................................................ 36

Storage...........................................................................................................................37

OPERATION OF THE EMERGENCY RELAY...........................................................38

TROUBLESHOOTING...............................................................................................40

When it is Difficult to Start the Engine............................................................................ 40

When Starter does not Start...........................................................................................40

When Output is Insufficient .................................... ....... ....... ....... ....... ....... .....................41

When Engine Suddenly Stops........................................................................................41

When Color of Exhaust Smoke is Black and Excessive................................................. 41

When Engine must be Stopped Immediately ............................................................ 42

When Engine Overheats ................................................................................................42

Generator Troubleshooting ............................................................................................43

WIRING DIAGRAM....................................................................................................45

SAFE OPERATION

Careful operation is your best insurance against an accident. Read and understand this operator’s manual carefully before operating the generator. All operators, no matter how much experience they may have had, should read this manual and all labels on the generator before operating the generator. It is the owner's responsibility to instruct all operators in safe operation.

Be sure to observe the following for safe operation.

OBSERVE SAFETY INSTRUCTIONS

A Read and understand carefully this OPERATOR'S

MANUAL and LABELS ON THE GENERATOR before attempting to start and operate the generator.

A Learn how to operate and work safely. Know your

equipment and its limitations. Always keep the generator in good condition.

A Before allowing other people to use your generator,

explain to them how to operate and have them read this manual before operation.

A DO NOT modify the engine by yourself.

UNAUTHORIZED MODIFICATIONS to the engine may impair the function and / or safety and affect engine life.

1SAFE OPERATION

WEAR SAFETY CLOTHING

A DO NOT wear loose, torn or bulky clothing around the

generator that may catch on working controls and projections causing personal injury.

A Use additional safety items, e.g. hard hat, safety

protections, gloves, etc., as appropriate or required.

A DO NOT operate generator or any equipment attached to

it while under the influence of alcohol, medication, or other substances, or while fatigued.

A DO NOT wear radio or music headphones while

operating the generator.

SAFE OPERATION2

CHECK BEFORE OPERATION & STARTING THE ENGINE

A Always turn off the circuit breaker and all switches for the

electrical devices before starting the generator.

A Check the wiring and connections of the electrical

devices before starting the generator.

A Be sure to check the engine before operation. If

something is wrong with the engine, repair it immediately and before operation.

A Keep all guards and shields in place before operating the

generator. Replace any that are damaged or missing.

A Check to see that bystanders are in a safe distance from

the generator before starting.

A Always keep the generator at least 1 m away from

buildings and other facilities.

A DO NOT allow children or livestock to approach the

generator while the engine is running.

A DO NOT start the engine by shorting across starter

terminals or bypassing normal starting circuit. The generator may start unexpectedly causing electric shock to others.

HANDLING ELECTRICAL COMPONENTS

Always exercise extra caution when handling electrical equipment. Careless handling of electrical components can cause serious personal injury, death by electrocution or property damage.

A DO NOT touch the electrical system during operation. A Connect or disconnect the load to the AC receptacles or

terminals only when the engine is stopped.

A Make certain that all power cables and wiring are in good

condition. Bare wire or frayed insulation can cause dangerous electrical shock, burns or death.

A DO NOT use the generator in damp or wet conditions.

Handling terminals and cables with wet hands can result in personal injury or death.

A Always shut the engine off and allow to cool before

cleaning. Use water sparingly when cleaning the outside of the generator. Make sure that water does not splash onto the electrical system or into the generator.

A DO NOT touch the generator with wet hands. You may

get an electric shock that can cause burns or death.

A DO NOT connect this generator to any building's

electrical system unless an isolation switch has been installed by a licensed electrician.

A DO NOT run other generators in parallel.

KEEP THE AREA AROUND THE ENGINE CLEAN

A Be sure to stop the engine before cleaning. A Keep the engine clean and free of accumulated dirt,

grease and trash to avoid a fire. Store flammable fluids away from sparks and fire.

A DO NOT stop the engine without idling. Sudden stops

can cause temperatures around the engine to rise suddenly. Keep the engine idling for about 5 minutes before stopping.

SAFE HANDLING OF FUEL AND LUBRICANTS

A Always stop the engine before refueling and/or

lubricating.

A DO NOT smoke or allow flames or sparks in the working

area. Fuel is extremely flammable and explosive under certain conditions.

A Refuel only when the engine has cooled off. Refuel in a

well ventilated and open place. When fuel and lubricants are spilled, clean them up before starting the engine.

A DO NOT mix gasoline or alcohol with diesel fuel. The

mixture can cause a fire and damage engine components.

A Operate the generator on a firm and level surface only.

DO NOT tilt or move the generator while it is running since this can cause fuel spillage.

3SAFE OPERATION

SAFE OPERATION4

EXHAUST GASES & FIRE PREVENTION

A Engine exhaust fumes can be very harmful if allowing

them to accumulate. Be sure to run the engine in a well ventilated place and where there are no people or livestock near the generator.

A DO NOT operate the generator in a closed area such as

inside houses, warehouses, tunnels, wells, ship holds, tanks, etc. or places without proper ventilation.

A DO NOT operate the generator where the building or

other obstructions block off air circulation or where exhaust gas can accumulate.

A The exhaust gas from the muffler is very hot. To prevent

a fire, DO NOT expose to dry grass, papers, oil and any other combustible materials to exhaust gas. Also, keep the engine and muffler clean at all times.

A To avoid fire, be alert for leaks of flammables from hoses

and lines. Be sure to check for leaks from hoses or pipes, such as fuel and engine oil by following the maintenance check list.

A To avoid a fire, DO NOT short across power cables and

wires. Check to see that all power cables and wiring are in good condition.

A Keep all power connections clean and tight. Bare wire or

frayed insulation can cause a dangerous electrical shock and personal injury.

HANDS AND BODY AWAY FROM THE ROTATING PARTS

A DO NOT operate the generator with the side covers

removed or open. Serious personal injury may result if fingers or clothing are caught in the rotating parts.

A Be sure to stop the engine before checking or adjusting

belt tension and cooling fan.

A To avoid personal injury, keep your hands and body

away from the rotating parts, such as cooling fan, V-belt, fan drive V-belt, pulleys or flywheel.

A DO NOT run the engine with installed safety guards

detached. Install safety guards securely before operation.

ESCAPING FLUID

A Relieve all pressure in the oil and the cooling systems

before any lines, fittings or related items are removed or disconnected.

A Be alert for possible pressure when disconnecting any

device from a system that utilizes pressure. DO NOT check for pressure leaks with your hand. High pressure oil or fuel can cause serious personal injury.

A Escaping fluid under pressure has sufficient force to

penetrate skin causing serious personal injury.

A Fluid escaping from pinholes may be invisible.

Use a piece of cardboard or wood to search for suspected leaks: DO NOT use hands or body. Use safety goggles or other eye protection when checking for leaks.

A If injured by escaping fluid, see a medical doctor at once.

This fluid can produce gangrene or severe allergic reaction.

5SAFE OPERATION

SAFE OPERATION6

CAUTIONS AGAINST BURNS & BATTERY EXPLOSION

A To avoid burns, be alert for hot components, e.g. muffler,

muffler cover, radiator, pipes, hoses, engine body, coolant, engine oil, etc. during operation and just after the engine has been shut off.

A DO NOT remove the radiator cap while the engine is

running or immediately after stopping. Otherwise hot water from the radiator will escape under pressure causing injury by scalding. Wait for more than 10 minutes to allow the coolant to cool down, before removing the cap.

A Make sure to close the drain valve of coolant and engine

oil, close radiator pressure cap and tighten hose clamps before operating. If any of these parts are taken off, or left loose, serious personal injury can result.

A The battery presents an explosive hazard. When the

battery is being activated, hydrogen and oxygen gases are extremely explosive.

A Keep sparks and open flames away from the battery,

especially when charging the battery. DO NOT strike a match near the battery.

A DO NOT check battery charge by placing a metal object

across the terminals. Use a voltmeter or hydrometer.

A DO NOT charge battery if frozen, there is a risk of

explosion. When battery is frozen, allow the battery to warm up to 16 C (61 F) before charging.

A DO NOT use or charge the battery if its fluid level is below

the LOWER (lower limit level) mark (refillable type battery only). Otherwise, the component parts may deteriorate earlier than expected, which may shorten the service life or cause an explosion. Add distilled water until the fluid level

CONDUCTING SAFETY CHECKS & MAINTENANCE

A Know how to stop the generator quickly, and understand

operation of all the controls. DO NOT permit anyone to operate the generator without proper instruction.

A When checking engine or servicing, place the generator

in an open area and level ground. DO NOT work on anything that is supported ONLY by lift jacks or a hoist. Always use blocks or safety stands to support the generator before servicing.

A Detach the battery from the generator before conducting

service. Put a “DO NOT OPERATE!” tag on the key switch and remove the key to avoid accidental starting.

A To avoid sparks from an accidental short circuit, always

disconnect the battery’s ground cable (-) first and connect it last.

A Sulfuric acid in battery electrolyte is poisonous. It is

strong enough to burn skins and clothing and cause blindness if splashed into eyes. Keep electrolyte away from eyes, hands and clothing. If you spill electrolyte on yourself, flush with water, and get medical attention immediately.

A Be sure to stop the engine and remove the key when

conducting daily and periodic maintenance, servicing and cleaning.

A Check or conduct maintenance after the engine, coolant,

muffler, or muffler cover have cooled off completely.

A Always use the appropriate lifting equipment and make

sure safety stands are in good condition when performing any service work. Make sure that you understand how to use the equipment before servicing.

A Use ONLY the correct engine flywheel rotating

techniques for manually rotating the engine. DO NOT attempt to rotate the engine by pulling or prying on the cooling fan or V-belt. This practice can cause serious personal injury or premature machine damage to the cooling fan.

A Replace fuel, lubricant and coolant hoses with their hose

clamps every 2 years or earlier if required. They are made of rubber and deteriorate over time whether used or not.

A When servicing is performed together by two or more

persons, take care to perform all work safely.

A Keep first aid kit and fire extinguisher handy at all times.

7SAFE OPERATION

SAFE OPERATION8

DANGER, WARNING AND CAUTION LABELS

Pay special attention to all labels on the generator. Refer to following representations for labels used on the SQ-Series Generator. Labels are available individually from your KUBOTA Dealer.

(1) Part No. G3341-8851-0 (5) Part No. G3907-8832-0

(6) Part No. G3352-8836-0

(2) Part No. G3341-8824-0

(3) Part No. 18620-8806-0

(4) Part No. 18901-5090-0

(7) Part No. G3341-8830-0

(8) Part No. G3341-8831-0

(9) Part No. G3102-8806-0 (11) Part No. 6C090-5896-0

(10) Part No. G3341-8822-0 (12) Part No. G3341-8895-0

9SAFE OPERATION

SAFE OPERATION10

CARE OF DANGER, WARNING AND CAUTION LABELS

1. Keep danger, warning and caution labels clean and free from obstructing material.

2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth.

3. Replace damaged or missing danger, warning and caution labels with new labels from your local KUBOTA Dealer.

4. If a component with danger, warning and caution label(s) affixed is replaced with new part, make sure new label(s) is (are) attached in the same location(s) as the replaced component.

5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge.

SERVICING OF GENERATOR

Your dealer is interested in you r new generator and h as the desire to help you get the most v alue from it. After reading this manual thoroughly, you will find that you can do some of the regul ar maintenance yourself. However, when in need of parts or major service, be sure to see your KUBOTA Dealer. For service, contact the KUBOT A Deal ership from which you purchased your generator or your local KUBOTA Dealer.

When in need of parts, be prepar ed to give your dealer the generator and engine serial numbers. Locate the serial numbers now and record them in the space provided below.

Model Serial No. Generator Engine Date of Purchase Name of Dealer (To be filled in by purchaser)

1SERVICING OF GENERATOR

(1) Engine model and serial number

(1) Generator m odel (2) Generator serial number

2 SPECIFICATIONS

SPECIFICATIONS

MOKUZIYOU

MODEL Unit SQ-1120 SQ-1150 SQ-3140 SQ-3200 SQ-3300

GENERATOR

Model PX-312KE1 PX-319KE1 PX-312KE3 PX-319KE3 PX-322KE3 Design Revolving field, self-excited brushless AC generator Frequency Hz 50 Standby Output Continuous Output Voltage-single phase V 240 240 Voltage-3 phase V --- 415 Armature connection Series Star with neutral Phase & Wire 1 Phase & 4 Wires 3 Phase & 12 Wires Power Factory 1.0 0.8 No. of Poles 4-pole Insulation Class H Voltage Regulation % Type of Coupling Direct coupled

DIESEL ENGINE

Model D1703-EBG V2203-EBG D1703-EBG V2203-EBG V3300-EBG Type Vertical, water-cooled, 4-cycle diesel engine No. of cylinders 34344 Bore x Stroke mm 87 x 92.4 98 x 110 Displacement L 1.647 2.197 1.647 2.197 3.318 Engine Speed rpm 1500 Continuous rated output Lubricating oil API service class CF or higher Oil capacity L 5.6 7.6 5.6 7.6 13.2 Coolant capacity * L 6.6 7.4 6.6 7.4 9.3

SET

Fuel Diesel fuel No.2 (ASTM D975) Fuel Consumption

At full load Fuel tank capacity L 62 68

Continuous operating hours (at 3/4 load)

kVA (kW) kVA (kW)

kW (HP)

L/h 3.9 5.5 3.8 5.3 7.7

hrs 20.7 15.1 21.4 15.5 11.5

11.8 (11.8) 16 (16) 15.4 (12.3) 22 (17.6) 33 (26.4)

11.2 (11.2) 15 (15) 14 (11.2) 20 (16) 30 (24)

1.5 (No load to full load)

13.6 (18.2) 18.4 (24.7) 13.6 (18.2) 18.4 (24.7) 26.8 (35.9)

Battery (Ah/5Hr) 80D26R (55Ah) Starting system Electric L x W x H mm 1675 x 780 x 1070 Approx. Net Wt. kg 699 762 699 762 935 Emergency stop

system

AMPS

Single phase 240V A 46.7 62.5 12.5 (3 set) 18.1 (3 set) 27.1 (3 set) Three Phase 415V A --- --- 19.5 27.8 41.7

*Including the recovery tank

130E41R (92Ah)

1935 x 860 x 1095

In case of abnormal : Oil pressure, water temperature, fan belt broken

When the side cover and door open with running

3SPECIFICATIONS

BPart Names

[SQ-1120, SQ-3140, SQ-1150, SQ-3200]

[SQ-3300]

(1) Fuel tank cap-with lockable key (2) Cooling air inlet (3) Door (4) Cooling air outlet (5) Handling hook (6) Radiator top cover (7) Door handle-with lockable key (8) Panel cover (9) Load center cover (10) Muffler (11) Fork pockets (12) Emergency stop switch (13) Fully Bunded (Base bunded to 110% capacity) (14) Control panel

(1) Generator (2) Battery (3) Radiator (4) Recovery tank (5) Oil dipstick (6) Engine oil port (7) Oil filter cartridg e (8) Fuel sedimenter cartridge (water separator) (9) Electric fuel feed pump (10) Fuel filter cartridge (11) Fuel tank (12) Air cleaner (13) Safety switch (14) Engine oil drain plug (15) Coolant drain plug (16) Fuel tank drain plug (17) Containment drain point (Plug size: 3/4)

4 INSTRUMENT PANEL AND PART NAMES

INSTRUMENT PANEL AND PART NAMES

MOKUJIYOU

BControl Panel

C 1 Phase Type

[SQ-1120, SQ-1150]

C 3 Phase Type [SQ-3140, SQ-3200, SQ-3300]

(1) A.C. Voltmeter (2) Frequency meter (3) A.C. Ammeter (4) Pilot lamp (Green lamp) (5) Glow plug lamp (6) Water temperature lamp (7) Oil pressure lamp (8) Battery charge lamp (9) Main switch (key) (10) Circuit breaker (11) Voltage adjuster (12) Terminals (output) (13) Hour meter (14) Ground terminal (15) Door open lamp (16) Fuel gauge

(1) A.C. Voltmeter (2) Frequency meter (3) A.C. Ammeter (4) Pilot lamp (Gree n lamp) (5) Glow plug lamp (6) Water temperature lamp (7) Oil pressure lamp (8) Battery charge lamp (9) Main switch (key) (10) Circuit breaker (11) Voltage adjuster (12) Terminals (output) (13) Hour meter (14) Ground terminal (15) Voltmeter change-over switch (16) Ammeter change-over switch (17) Door open lamp (18) Fuel gauge

BControl Box

5INSTRUMENT PANEL AND PART NAMES

C 1 Phase Type

C 3 Phase Type

(1) AVR (Automatic voltage regulator) (2) Relay unit (3) Emergency relay (4) Starter relay (5) Solenoid relay (6) Glow relay (7) Thermal relay (Over current relay) (8) CT (Current transformer) (9) Terminal (Generator) (10) Terminal (AVR) (11) Terminal (Batte ry) TB3 (12) Terminal (Main switch) TB2 (13) Terminal (Auxiliary output) TB1 (14) Terminal (Auto-start unit) TB4 (15) Fuse (3A, F1) (16) Fuse (10A, F2) (17) Fuse (3A, F3) (18) Fuse (1A, F4) (19) Fuse (2A, AVR)

6 PREPARATION TO SUPPLY THE ELECTRIC POWER

PREPARATION TO SUPPLY THE ELECTRIC POWER

1. Generator grounding

The end user, equipment owner or operator must contact his local, state, county or municipal electric code department to determine the approved generator grounding method to be used in his application or location. Recommendations in the NEC (National Electrical Code), NFPA (National Fire Protection Association), AUSTRALIAN STANDARDS and OSHA (Occupational Safety and Health Administration) regulations must be followed to assure compliance and safe operation. Always be sure to ground (earth) the generator terminals to comply with the local, state, national or OSHA requirements.

One possible connection method for construction site use is as follows:

(1) Load center cover (2) Generator ground terminal

(A) #6AWG Flexible copper ground connection (B) Metal ground rod or building cold water pipe system per N.E.C. code

7PREPARATION TO SUPPLY THE ELECTRIC POWER

AC devices Electric power (W) = Voltage (V) Current (A) Power factor

Motor input (kVA)

Motor output (kW)

Motor efficiency power factor

2. Recommended capacity of electrical devices

APPLICATION RANGE

You can operate the SQ-series generator in the following range.

Typical

Apparatus

SQ-1120

SQ-1150

SQ-3140

SQ-3200

SQ-3300

A Keep an inverter load below 40% of the generator

capacity.

A Keep a mercury lamp l oad below 60% of t he generator

capacity.

A Make sure that tot al active me rcury lamp lo ad is below

30% or so of the generator capacity. Turn on the mercury lamps one by one. Be careful not to tu rn off the lamps and on again immedia tely. The generator voltage may rise to extremely high levels and the AVR may get damaged.

A Before turning on the lamps again, wait for 10 minutes

or so until the lamps cool down enough.

A The data shown above is only a guideline to

approximate load capacities and may vary from generator model to generator model, with different types of loads at rated outputs. These values may be different from a ct u al ap pl i ca t i ons be c au se of t he in pu t characteristics peculiar to each load.

Light and

heaters

Commutator

motor

11.2 kVA 7.0 kVA

(11.2 kW)

15.0 kVA

(15.0 kW)

11.2 kVA

(11.2 kW)

16 kVA (16 kW)

24 kVA (24 kW)

(5.6 kW)

9.5 kVA

(7.6 kW)

8.5 kVA

(6.8 kW)

12.5 kVA

(10.0 kW)

19.0 kVA

(15.2 kW)

Induction

motor

---

5.5 kW (7.5 HP) 3 Phase

7.5 kW (10 HP) 3 Phase

11 kW (15 HP)

3 Phase

A Connecting a motor.

When connecting to a line starting motor, these generators may be used to start a submerged pump of

5.5kW, 7.5kW, 11.0kW (three phase). When starting the motor, the voltage drops immediately. The circuit may be opened if an electromagnetic switch is connected to the same circuit. When connecting two motors or more, make sure the total current capacity of the motors does not exceed the total rated current.

A Connecting to lights and electric heaters.

When connecting to lights or electric heaters, the generator can be used up to the rated capacity. When using a single phase, it can be used up to the rated current.

A Power factor calculation s.

The power factor calculation is used to determine input of the electrical devices.

Power factors of commonly used devices are listed in the following table.

Load type Power factor Single-phase induction motors 0.4 to 0.75 3-phase induction motors 0.65 to 0.85

Electric heaters, incandescent lamps

Commutator motor 0.8 to 0.95 Fluorescent lamps, mercury

lamps AC arc welder 0.4 to 0.6

A Ordinarily, a motor is rated in kW. This does not ref er

to motor output.

A If a lighting system is employed together with som e

types of computers and inverter air- conditioners and/ or the regulated power supply for TV sets, the lights might suffer flickering. This phenomenon does not indicate a fault of the gen erator: it is caused by poor matching between the above-mentioned regulated power supply and the generator's au tomatic voltage regulator. In such a case, modify the load combination to eliminate the flickering.

1.0

0.4 to 0.9

8 CONNECTING THE LOAD

CONNECTING THE LOAD

MOKUJIYOU

BConnection Notes

BConnecting the Load

To avoid personal injury: A Before the generator can be

connected to a building’s electrical system, a licensed electrician must install an isolation (transfer) switch in the building’s main fuse box. The switch is the connection point for generator power and allows selection of generator or main line power to the building. This will prevent the generator from charging the main power line (backfeeding) when the main power supply has failed or has been turned off for line repair. Backfeeding can electrocute or injure line maintenance personn el. Also, generator and building electrical system damage can occur when normal operating power returns if unit is used without an isolation switch.

1. Avoid connecting the generator to commercial power outlet.

2. Avoid connecting the generator in parallel with any other generator.

To avoid personal injury: A Connect or disconnect the load to

the AC receptacle only when the engine is stopped.

1. Turn OFF the circuit breakers on the control panel.

(1) Circuit breaker

2. Connect the load to the A.C. output terminals.

(1) Terminals (output)

3. Finally be sure to close the cover and tighten up the lock screws.

C Single phase 2 terminal s type

Use (U)-(V)

(1) Light (2) Television (3) Air conditioner (4) Electric Drill (5) Motor Pump

C 3 phase and single phase 4 terminals type A For 3 phase power source

Use (U)-(V)-(W)

9CONNECTING THE LOAD

(1) Motor

A For single phase power source

Use (O)-(U) (O)-(V) (O)-(W)

(1) Electric Drill (2) Motor Pump (3) Air conditioner

10 PRE-OPERATION CHECK

PRE-OPERATION CHECK

DAILY CHECK

To prevent problems from occurring, it is important to know the condition of the ge nerator. Always perform the following check items before starting the generator.

To avoid personal injury: A Before checking or servicing the

generator, make sure it is on a level surface with the engine shut off.

C Check items

-Check for oil, fuel and coolant leakage

-Check and drain bunded base as required

-Check cooling air inlet and outlet for obstructio ns or clogging

-Check radiator fins for clogging

-Check fan belt tension

-Check engine oil level

-Check coolant level

-Check generator grounding

-Refuel (See "FUEL" in "PERIODIC SERVICE" section.)

-Care of danger, warning and caution labels (See "DANGER, WARNING AND CAUTION LABELS" in " SAFE OPERATION" section.)

To avoid personal injury from contact with moving parts;

A DO NOT open the door or generator

side cover while the engine is running.

A Do not touch muffler or exhaust

pipes while they are hot; Severe burns could result.

BHow to Open the Door

Insert the door key and turn clockwise and open the machine doors. The doors open together on hinges. The door of the generator is equipped with a safety switch. Safety switch automatically shuts off the engine when door is opened.

(1) Door (2) Safety switch

BBattery

The battery is shipped in dry, ch arged condition without electrolyte. The battery must be charged prope rly before using for the first time.

To avoid the possibility of battery explosion:

The battery comes in two types: refillable and non-refillable. For using the refillable type battery, follow the instructions below. A DO NOT use or charge the battery if

the fluid level is below the LOWER (lower limit level) mark. Otherwise, the battery component parts may deteriorate prematurely, shorten the battery's service life; which may cause an explosion. Immediately, add distilled water until the battery's fluid level comes somewhere between the UPPER and LOWER levels.

A Keep all sparks and flames away

from the battery and fuel tank. A battery, especially when charging, will give off hydrogen and oxygen gases which can explode and cause serious personal injury.

1. Remove the vent plugs.

2. Fill cells up to the upper level with electrolyte. [Specific gravity of sulfuric acid 1.270 to 1.290 (at 20 C=68 F)]

3. Allow the battery to sit for about one hour after filling.

4. If the electrolyte level is dropped, refill with electrolyte up to the upper level .

5. Replace the vent plugs.

6. Charge the battery at the n ormal chargin g rate of 6.0 amperes.

7. Wash off any electrolyte which may have spilled.

(1) Vent plug opening (2) Electrolyte level indication tube (3) Indicated level

A The duration of dry charged efficiency, will decrease in

proportion to the period of time elapsed after shipment and during storage. To obta in the longest ser vice life of the battery, it is necessary for the battery to be charged for a sufficient period of time. Continue to charge until all cells are gassing freely, and the voltage and specific gravity reading in all cells remain constant for 3 or more successive rea dings taken at 30 minute intervals.

A When the battery has been ch ar ged fu lly, t he spe cific

gravity of electr olyte should be 1 .270 to 1.290 (at 20 C =68 F).

(A) Upper level (B) Lower level

11PRE-OPERATION CHECK

BCoolant

To avoid personal injury:

A Place the machine on a level surface. A DO NOT remove the radiator cap

while coolant is hot. When cool, rotate the radiator cap slowly to the first stop to allow excess pressure to escape. Then remove cap completely.

1. Remove the radiator cap and fill with specified coolant until the coolant level is just below the port.

2. Fill with coolant to the “FULL” mark on the recovery tank.

3. Securely tighten radiator cap and recovery tank cap.

A See "RADIATOR" in "PERIODIC SERVICE" section

for changing coolant.

BOpening and Closing of the Fuel Tank Cap

1. Open the tank cap cover, insert the tank cap cover key and turn clockwise. Then turn the tank cap counterclockwise to open.

BEngine Oil

The generator has been shipped without engine oil. Fill with oil to the correct level before attempting to start the engine.

1. Place the machine on a level surface.

2. Remove the oil cap.

3. Add engine oil of grade CF or high er, up to the uppe r mark on the oil level gauge.

A See "ENGINE OIL" in "PERIODIC SERVICE" section

for engine oil capacity and checking engine oil level.

There are three types of key. Select the key as necessary.

(1) Key (2) Fuel tank cap (3) Tank cap cover

2. To close the tank ca p, turn cl ockwise and t he tank cap cover key in the opposite direction. Then close the tank cap cover.

PRE-OPERATION CHECK12

BFuel

To avoid personal injury: A DO NOT refuel when engine is

running or hot.

A Always shut off the engine before

refueling.

A DO NOT overfill fuel system. If any

fuel overflows, wipe it up completely before starting operation.

A When refueling, keep all flames,

sparks and cigarettes away from generator.

1. Always fill the fuel through the fuel tank strainer.

2. Make sure that dirt or water does not enter the fuel tank.

3. Fill with Diesel fuel No.2-D (ASTMD975).

4. Below 0 C (32 F) a mix of No.1-D and No.2-D is acceptable.

5. Fuel level is read by fuel gauge placed on the control panel. Fuel gauge is activate d with the main switch k ey "ON".

A If the fuel tank should empty complete ly causing the

engine to stop, then the fuel system requires air bleeding after filling the tank and before restarting the engine. (See "Air Bleeding the Fuel System" in "PERIODIC SERVICE" section.)

13OPERATING THE GENERATOR

OPERATING THE GENERATOR

SAFETY DEVICES

To avoid personal injury: A Read " SAFE OPERATION" in the front

of this manual.

A Read the danger, warning and caution

labels located on the generator.

A To avoid the danger of exhaust fume

poisoning, do not operate the en gine in a closed building without proper ventilation.

A Always turn OFF the circuit breaker

before starting the generator.

A Turn OFF a ll switches on the electrical

devices.

A Check the wiring and connections of the

electrical devices before starting the machine.

A DO NOT touch the live parts during

operation.

To avoid serious injury or death: A DO NOT modify or remove the safety

devices. Unauthorized modification or removal may affect the function and safety of the machine, which m ay result in serious injury or death.

1. The access door are equipped with safety devices to detect the opening and/or closing condition of door.

2. The door safety switch (2 ) is located on the access door. If you turn the key switch to "ON" with the access door open, the starter of engine will not activate. (While the fuel pump solenoid can be activated.)

3. Turn the key switch to "OFF" to close the access door and then restart the engine.

(1) Access door (2) Safety switch

4. If you open the access door while the engine is running, the emergency stop system will stop the engine. To maintain the battery's life as much as possible, turn the key switch to "OFF" position. (For detail on the emergency unit, see "OPE RATION OF THE EMERGENCY RELAY" on page 38.)

OPERATING THE GENERATOR14

STARTING THE ENGINE

To avoid personal injury: A To prevent contact with live components

or rotating parts, the engine automatically stops when load center cover or access door is opened.

A While the load center cover or access

door remains open, the starter will not activate.

A Be sure to stop the en gine according to

proper procedure before you open the load center cover or access door. Otherwise the power supply will be shut down instantaneously.

A DO NOT apply any tape or anything else

that would keep the safety switch inactive.

1. Turn OFF all switches on the electrical devices.

2. Turn OFF the circuit breakers on the control panel.

3. Ensure that the fuel lever is set to the "OPEN" Position.

(1) Fuel lever (2) Water separator

(A) "OPEN"

4. Insert the key into the main switch and turn it "ON".

5. Check the battery charge lamp and oil pressure lamp are "ON".

(1) Circuit breaker (A) "OFF"

A For the AUS specifi ed mo dels , also turn OFF th e lo ad

center circuit breaker.

(1) Water temperature lamp (2) Oil pressure lamp (3) Battery charge lamp (4) Door open lamp

A Do not use ether or any starting fluid for starting the

engine, or severe engine damage will occur.

A To protect the battery and the starter, make sure that

the starter is not continuously turned for more than 10 seconds.

A When there is a severe ove rl oad or sh o rt ci rcu i t in th e

wiring of the generator, the circuit breaker turns OFF. If this happens, eliminate t he cau se and th en tur n t he circuit breaker ON again.

A The thermal relay do es not work if the battery voltage

falls below the prescribed level, which will detect overload on the meter. Therefore, be aware of the battery condition.

6. Turn the key to "GLOW" position.

A See "COLD WEATHER STARTING" section as to the

preheating times.

7. Turn the key to the "START" position and release when the engine starts.

(1) Main switch (Key) ( A) "OFF"

(B) "ON" (C) "GLOW" (D) "START"

15OPERATING THE GENERATOR

BWarm-up in Cold Ambient Temperatures

In cold weather, the engine oil may be cold with increased viscosity. This can delay oil circulation or abnor mally low oil pressure for some time after engine start-u p. Th is can result trouble in the lubrication circuit o r damage to the engine moving parts. To prevent the above problems, perform the following instructions: Warm up the engine at rated revolution w ith no load.

Ambient temperature Warm-up time requirement

Above 0

0 C(32 F) to -10 C(14 F)

Below -10

(32 F) At least 10 minutes

10 to 20 minutes

(14 F)

More than 20 minutes

10. Check the voltage on the meters.

A Voltage regulation can be achieved by turning the

voltage adjuster in clockwise or counterclockwise direction.

A Set voltage to the same as the devices being used.

Single Phase Type

A Do not run the starter motor continuously for more

than 10 seconds at a time, or it may damage the starter. If the engine fa ils to start, wait for about 30 seconds and try again. When the engine starts to generate electric power, the green lamp will light up.

8. Check to see that the battery charge lamp, oil pressure lamp and door open lamp are "OFF".

9. Check the warning lamps.

Whenever the engine stops automatically during operation, correct the problem before restarting the engine.

A Be sure to warm up the engine, not only in winter, but

also in warmer seasons. An insuffic iently warmed-up engine can short en its service life.

(1) Circuit breaker (2) Voltage adjuster (Potentiometer) (3) AC Volt meter

3 Phase Type

(A) "ON"

(1) Circuit breaker (2) Voltage adjuster (Potentiometer) (3) AC Volt meter (4) Voltmeter Change-Over switch

(A) "ON"

OPERATING THE GENERATOR16

11. Turn ON the circuit breaker on the control panel.

(1) Circuit breaker (A) "ON"

A For the AUS specifi ed models, turn O N the load cent er

circuit breaker that corresponds to the receptacle being used.

12. Turn ON the electric al device switc hes for the connections.

COLD WEATHER STARTING

If the ambient temperature is below * -5 C (23 F) and the engine is very cold, start it in the following manner: Take steps (1) through (5) in "STARTING THE E NGI NE " section.

6. Turn the main switch (key) to the "GLOW" position until the glow plug indicator goes off.

A If the ambient temperature is low, the preheating time

will take longer.

A Shown below are the st andard preheating times for

various temperatures. This operation, however, is not required, when the engine is warmed up.

Ambient temperature Preheating time Above 10 C (50 F) NO NEED 10 C (50 F) to

-5 C (23 F) *Below -5 C (23 F)

Limit of continuous use 20 seconds

7. Turn the key to "S T" ("START") positi on and the engine should start.

Approx. 5 seconds

Approx. 10 seconds

(If the engine fails to start after 10 seco nds, turn off the key for 30 seconds. Then repeat steps (6) and (7) above.)

A Do not allow the starter motor to run continuously for

more than 10 seconds.

A Be sure to warm up the engine, not only in winter, but

also in warmer seasons. An insufficiently war med-up engine can shorten its service life.

A When there is possibility of temperature drops below

-15 C (5 F) detach the battery from the machine, and keep it indoor in a safe area . Reinstalled the battery before the next operation.

17OPERATING THE GENERATOR

STOPPING THE ENGINE

1. Turn OFF all electrical device switches for connected loads.

A For the AUS models, also turn OFF the load center

circuit breaker.

2. Turn OFF the circuit breakers.

4. Turn the main switch (key) to the "OFF" position.

(1) Main switch (Ke y ) (A) "OFF"

5. Turn the fuel lever to the "CLOSE" position.

(1) Circuit breaker (A) "OFF"

3. Allow the engine to run with no load for about 5 minutes before stopping the engine completely.

(1) Fuel lever (2) Filter bowl

(A) "CLOSE"

OPERATING THE GENERATOR18

EMERGENCY STOP SWITCH

A If the emergency stop swit ch is pressed, the battery

power is turned off and the engine is interrupted. Do not press this switch except for an emergency.

(1) Emergency stop switch

1. If anything unusual occu rs, press the switch (1) and

the engine must be stopped immediately.

2. In this case, be sure to turn off the main switch.

3. Rotate the button to reset emergency stop.

MAINTENANCE

ANTI-FREEZE & DISPOSAL OF FLUIDS

A DO NOT run the engine with installe d safety guards detached. A Anti-freeze contains poison. Wear rubber gloves to avoid personal injury.

In case of contact with skin, wash it off immediately.

A DO NOT mix different types of Anti-freeze. The mixture can produce

chemical reaction causing harmful substances. Use approved or genuine KUBOTA Anti-freeze.

A Be mindful of the environment and the ecology. Before draining any fluids,

find out the correct way of disposing of them. Observe the relevant environmental protection regulations when dispos ing of oil, fuel, coolant, filters and batteries.

A When draining fluids from the engine, place a suitable container

underneath the engine body.

A DO NOT pour waste onto the ground , down a drain, or into any water

source.

19MAINTENANCE

To avoid personal injury: A Be sure to conduct daily checks,

periodic maintenance, refueling or cleaning on a level surface with the engine shut off and the key removed.

A Before allowing other people to use

your generator, explain how to operate, and have them read and understand this manual before operation.

A When cleaning any parts, do not use

gasoline. Use a regular cleanser.

A Always use proper tools that are in

good condition. Make sure you understand how to use them before performing any service work.

A When installing, be sure to tighten all

nuts and bolts lest they should be loose. Tighten the nuts and bolts to the specified torque.

A DO NOT put any tools on the battery,

or battery terminals may short out. Severe burns or fire could result. Detach the battery from the engine before maintenance.

A DO NOT touch muffler or exhaust

pipes while they are hot; severe burns could result.

20 MAINTENANCE

SERVICE INTERVALS

Observe the following for service and maintenance.

Interval

Ref.

page

No.

Check point

First

hours

Every

day

Every

100

hours

Every hours

250

Every

500

hours

1 Check of fuel pipes and clamp bands 2 Check and drain bunded base as required 35 3 Change of engine oil *5 11 4 Cleaning of air cleaner element 31 *1 5 Check of battery electrolyte level 32 6 Check of fan belt tightness 35 7 Check of radiator hoses and clamp bands 30 8 Check of intake air hose 31 9 Replacement of oil filter cartridge 27

Replacement of fuel filter cartridge or element 23,

24 11 Cleaning of sedimenter (water separator) 24 12 Cleaning of water jacket (radiator interior) 30 13 Replacement of fan belt 35 14 Check of valve clearance 15 Replacement of air cleaner element 31 *2

Check of damage in electric wiring and loose

connections Check of fuel injection nozzle injection

pressure

-*3

18 Check of injection pump - *3 19 Replacement of fuel pipes and clamp bands - *3

Replacement of radiator hoses and clamp

bands

30 21 Replacement of battery 32

22 Change of radiator coolant (L.L.C.) *5 29 23 Replacement of intake air hose 31 *4

A The jobs indicated by must be done after the first 50 hours of operation. *1 Air cleaner should be cleaned more often in dusty conditions than in normal conditions. *2 After 6 times of cleaning. *3 Consult your local KUBOTA Dealer for this service. *4 Replace earlier if necessary. *5 Level check. A When the battery is used for less than 100 hours in a year, check its electrolyte yearly. (for refillable battery’s only)

Interval

No.

Check point

Every

1000

hours

Every

1500

hours

Every

3000

hours

Every

year

Every years

Ref.

page

1 Check of fuel pipes and clamp bands 2 Check and drain bunded base as required 35 3 Change of engine oil 11 4 Cleaning of air cleaner element 31 *1 5 Check of battery electrolyte level 32 6 Check of fan belt tightness 35 7 Check of radiator hoses and clamp bands 30 8 Check of intake air hose 31 9 Replacement of oil filter cartridge 27

Replacement of fuel filter cartridge or element 23,

21MAINTENANCE

11 Cleaning of sedimenter (water separator) 24 12 Cleaning of water jacket (radiator interior) 30 13 Replacement of fan belt 35 14 Check of valve clearance 15 Replacement of air cleaner element 31 *2

Check of damage in electric wiring and loose

connections Check of fuel injection nozzle injection

pressure

-*3

18 Check of injection pump - *3 19 Replacement of fuel pipes and clamp bands - *3

Replacement of radiator hoses and clamp

bands

30 21 Replacement of battery 32

22 Change of radiator coolant (L.L.C.) 29 23 Replacement of intake air hose 31 *4

22 PERIODIC SERVICE

Model Capacity

SQ-1120, SQ-3140,

[Engine model : D1703-EBG]

SQ-1150, SQ-3200

[Engine model : V2203-EBG]

SQ-3300

[Engine model : V3300-EBG]

L Fuel tank capacity

PERIODIC SERVICE

FUEL

Fuel is flammable and can be dangerous. You should handle fuel with care.

To avoid personal injury: A DO NOT mix gasoline or alcohol with

diesel fuel. This mixture can cause an explosion.

A Be careful not to spill fuel during

refueling. If fuel should spill, wipe it off at once, or it may cause a fire.

A Stop the engine before refueling.

Keep the machine away from the fire.

A Be sure to stop the engine while

refueling or bleeding and when cleaning or changing fuel filter or fuel pipes. DO NOT smoke when working around the machine or when refueling.

A Check the above fuel systems in a

well ventilated and open place.

A When fuel and lubricant are spilled,

refuel after the machine cooled down.

A Cetane Rating : The minimum recommended Fuel

Cetane Rating is 45. A cetane rating greater th an 50 is preferred, especially for ambient temperatures below - 20 C (-4 F) or elev atio ns abo ve 15 00 m.

A Diesel Fuel Specification Type and Sulf ur Content %

(ppm) used, must be compliant with all applicable emission regulations for the area in which the engine is operated.

A Use of diesel fuel wit h s u lfu r cont e nt les s t ha n 0 . 10 %

(1000 ppm) is strongly recommended.

A If high-sulfur fuel (sulfur content 0.50 % (5000 ppm) to

1.0 % (10000 ppm)) is used as a diesel fuel, change the engine oil and oil filter at shorter intervals. (approximately half).

A DO NOT USE Fuels that have sulfur content greater

than 1.0 % (10000 ppm).

A Be sure to use a strainer when filling the fue l tank, or

dirt or sand in the fue l may cause trouble in the f uel injection pump.

A Always use diesel fuel. Yo u are required not to use

alternative fuel, because its quality is unknown and affect the generator performance. Kerosene, which is very low in cetane rating, adversely affects the engine. Diesel fuel differs in grades depending on the temperature.

A Be careful not to let the fuel tank become empty, or air

can enter the fuel system, necessitating bleeding before next engine start.

BFuel Level Check and Refueling

1. Check to see that the fuel level is above the lower limit of the fuel level gauge.

2. If the fuel is too low, add fuel to the upper limit. Do not overfill.

A No.2-D is a distillate fuel oil of lower volatility for

engines in industrial and heavy mobile service. (SAE J313 JUN87)

A Diesel fuels specified to EN 590 or ASTM D975 ar e

recommended.

23PERIODIC SERVICE

BAir Bleeding the Fuel System

To avoid personal injury; A DO NOT bleed a hot engine as this

could cause fuel to spill onto a hot exhaust manifold creating a danger of fire.

Air bleeding of the fuel system is required if; A after the fuel filter and pipes have been detached and

refitted;

A after the fuel tank has become empty; or A before the engine is to be used after long storage.

[PROCEDURE]

1. Fill the fuel tank with fuel.

2. Set the fuel lever to "OPEN" position.

3. Turn the key to "ON" for 30 to 40 seconds.

BCleaning the Fuel Filter Element

[Engine model : D1703-EBG, V2203-EBG]

Replace the fuel filter element every 500 hours of use, using the following procedure.

1. Close the fuel filter lever.

(1) Fuel filter lever (2) Fuel filter pot

2. Remove the top cap, and rinse the inside with diesel fuel.

3. Take out the element, and replace the element.

4. After cleaning, reinstall the fue l filte r to ke ep du st a nd dirt out.

5. Air-bleed the fuel line.

6. Properly dispose of used fuel filter element.

(A) "CLOSE" (B) "OPEN"

(1) Main switch (Key) ( A) "ON"

A With the key switch at "ON", the fuel electro-

mechanical pump can be activated automatically to vent the air in the fuel pipes, hoses and filter.

A Always turn the key to "OFF" when air is v ented and

the engine is not used, or it will cause the batt ery to discharge.

A Entrance of dust, water and dirt can cause a

malfunction of the fuel injection pump and the injection nozzle. Wash the fuel filter cup periodically.

(1) O ring (2) Filter element (3) Spring (4) Filter bowl (5) Screw ring

PERIODIC SERVICE24

BFuel Filter Cartridge Replacement

[Engine model : V3300-EBG]

Replace the fuel filter cartrid ge every 500 hours of use, using the following procedure.

1. Turn the fuel lever to the "CLOSE" position.

(1) Fuel filter cartridge (2) O ring (3) Pipe joint (4) Cover

(1) Fuel lever (2) Water separator

(A) "CLOSE"

2. Remove the fuel filter cartridge by using ring spanner.

(1) Fuel filter cartridge (A) "REMOVE"

3. Apply fuel oil thinly over the gasket and tighten the cartridge into position by hand-tightening only.

4. Air-bleed the fuel line.

5. Properly dispose the used fuel filter cartridge.

BCleaning the Water Separator

(Sedimenter)

A Every 250 hours of operation, clean the fuel filter in a

clean place to prevent dust contamination.

A When the marker com es close to the drain out level,

remove the screw ring and let water flow out of the filter bowl.

1. Turn the fuel lever to the "CLOSE" position.

(1) Fuel lever (2) Water separator

(A) "CLOSE"

A Replace the fuel filter cartridge periodically to prevent

wear of the fue l inject ion pu mp plunge r or th e injec tion nozzle, due to dirt or water in the fuel.

2. Remove the filter bowl, and rinse the inside with diesel fuel.

3. 3. Take out the element, and rinse it with diesel fuel.

4. After cleaning, reinstall the fuel filter to keep out dust and dirt.

5. Air-bleed the fuel line.

A Entrance of water, dust and dirt can cause a

malfunction of the fuel injection pump and the injection nozzle. Wash the fuel filter cup periodically.

(1) O ring (2) Filter element (3) Spring (4) Marker (5) Filter bowl (6) Screw ring

BDraining Water in the Fuel Tank

If the water separator gets filled too often, let water out of the fuel tank. The water in the ta nk can be draine d by openi ng the pl ug, as shown below illustration.

25PERIODIC SERVICE

ENGINE OIL

To avoid personal injury: A Be sure to stop the engine before

checking and changing the engine oil and the oil filter cartridge.

A DO NOT touch muffler or exhaust

pipes while they are hot; severe burns could result. Always stop the engine and allow it to cool before conducting inspections, maintenance, or cleaning.

A Contact with engine oil can damage

your skin. Put on gloves when handling engine oil. If you come in contact with engine oil, wash it off immediately.

A Be sure to check the engine oil on a level surface. If

placed on gradient s, oi l qua ntit y can n ot b e meas ure d accurately.

(1) Fuel tank drain plug (2) Fuel tank cap

A Do not operate a diesel engine when engine oil is

overfilled. This can effect the air intake system which could result in engine damage or malfunction.

PERIODIC SERVICE26

Model Capacity

SQ-1120, SQ-3140

[Engine model : D1703-EGB]

SQ-1150, SQ-3200

[Engine model : V2203-EGB]

SQ-3300

[Engine model : V3300-EGB]

5.6

7.6

13.2

BChecking Oil Level and Adding Engine Oil

1. Check the engine oil level b efore star ting or mor e than 5 minutes after stopping the engine.

2. Remove the oil le vel gaug e, wi pe it c lean and rei nsta ll it.

3. Take the oil level gauge out again, and check the oil level.

4. If the oil level is too low, remove the oil port, an d add new oil to the prescribed level.

5. After adding oil, wait more than 5 minutes a nd check the oil level again. It takes some time for the oil to drain down to the oil pan.

6. If the engine is operated with the oil level ne aring the lower limit, the oil may deterior ate more quickly than normal, therefor e, ke epi ng the oil leve l ne ar t he up per limit is recommended.

Engine oil capacity L

A CJ-4 classification oil is intended for use in engines

equipped with DPF (Diesel Particulate Filter) and is Not Recommended for use in Kubota E3 specification engines.

A Oil used in the engine should have API clas sification

and Proper SAE Engine Oil Viscosity according to the ambient temperatures where the engine is operated.

A With strict emission control regulations now in effect,

the CF-4 and CG-4 engine oils have bee n developed for use with low sulfur fuels, for On-Highwa y vehicle engines. When a Non-Road engine runs on high sulfur fuel, it is advisable to use a "CF or better" classification engine oil with a high Total Base Number (a minimum TBN of 10 is recommended).

(1) Oil port (2) Oil level gauge

[Lower end of oil level gauge] (A) Engine oil level within this range is proper.

above 25 C (77 F)

0 to 25 C (32 to 77 F)

below 0 C (32 F)

SAE30 or

SAE20 or

SAE10W or

SAE10W-30 SAE10W-40

A When using oil of different brands from the previous

one, be sure to drain all the previous oil before adding the new engine oil.

27PERIODIC SERVICE

BChanging Engine Oil

To avoid personal injury: A Be sure to stop the engine before

draining engine oil.

A When draining engine oil, place a

suitable container underneath the engine and dispose of it according to local regulations.

A DO NOT drain oil from a hot engine.

Allow engine to cool down sufficiently to avoid being burned.

1. Change oil after the initial 50 hours of operation and every 250 hours thereafter.

2. Remove the drain plug to drain the engine oil. Drain all the old oil, drains easier and completely when the engine is warm. Inspect drain plug gasket. Re place if damaged.

BReplacing the Oil Filter Cartridge

To avoid personal injury: A Be sure to stop the engine before

changing the oil filter cartridge.

A Allow engine to cool down

sufficiently. Oil can be hot and cause burns.

1. Replace the oil filter cartridge every 500 hours of operation.

2. Remove the old oil filter cart ridge with a filter wr ench. Dispose of filter properly.

3. Apply a film of oil to the gasket of the new cartridge.

4. Screw in the cartridge by hand. When the gasket contacts the seal surface, tighten the cartrid ge firmly only by hand. If you tighten the cartridge with a wrench, it will be tightened too much.

(1) Engine oil drain plug

3. Install the oil drain plug and gasket.

4. Add new engine oil up to the upper line of the oil level gauge.

(1) Oil filter cartridg e (2) Remove with a filter wrench (Tighten with your hand)

(1) Oil filter cartridg e

PERIODIC SERVICE28

5. After the new cartridge has been replaced, the engine oil level normally decreases a little. Th erefore run th e engine for a while and check for oil leaks through the seal before checking the engine oil level. Add oil if necessary.

A Completely wipe off any oil sticking to the machine in

the filter area.

RADIATOR

Make it a rule to check the coolant level before every operation.

To avoid personal injury: A DO NOT stop the engine suddenly,

stop it after about 5 minutes of unloaded idling.

A Work only after letting the engine and

radiator cool off completely (more than 30 minutes after it has been stopped).

A DO NOT remove the radiator cap

while coolant is hot. When cool, rotate cap slowly to the first stop to allow excess pressure to escape. Then remove cap completely. If overheating should occur, steam gushes out from the radiator or recovery tank; Allow the engine to cool before attempting to open the cap. Severe burns could result.

BChecking Coolant Level, Adding Coolant

1. Remove the radiator cap after the engine has completely cooled, and check to see that coolant reaches the supply port.

2. If the radiator is pr ovided with a recovery t ank, ch eck the coolant level of the recovery tank. When it is between the "FULL" and "LOW" marks, the coolant will usually last for one day’s work.

(1) Recovery tank (2) Cap

3. When the coolant le vel dr ops du e t o eva po r at ion , ad d only coolant up to the full level.

(A) "FULL" Upper line 1.1 L (B) "LOW"

(1) Radiator top cover (2) Radiator cap (3) Coolant filling port

[Engine model : D1703-EBG, V2203-E BG]

4. Check to see by a drain plug; it is at the fully bunded as shown below.

(1) Coolant drain plug (2) Radiator

[Engine model : V3300-EBG]

4. Check to see the two drain points; one is at the

crankcase side and the other is at the fully bunded as shown below.

29PERIODIC SERVICE

BChanging Coolant

1. To drain coolant, always remove both drain plugs and simultaneously open the radiator cap as well. With the radiator cap kept closed, the coolant will not drain completely. Dispose of used coolant properly.

2. Remove the overflow pipe of the radiator pressure cap to drain the recovery tank.

3. Prescribed coolant volume

Engine model Coolant capacity

D1703-EBG 5.5 V2203-EBG 6.3 V3300-EBG 8.2

4. An improperly tightened radiator cap or a gap between the cap and the seat increases loss of coolant.

5. Coolant (Radiator cleaner and anti-fr ee ze)

Season

Summer

Winter (When temperature drops below 0 C (32 F)) or all season

Pure water and radiator cleaner

Pure water and anti-freeze (See "Anti-freeze" in "RADIATOR" section.)

Coolant

(1) Coolant drain cock (2) Coolant drain plug (3) Radiator

A If the radiator cap has to be removed, proceed with

caution and secure ly retighten the cap.

A If coolant is leaking, consult your local KUBOTA

Dealer.

A Make sure that mudd y or sea wa ter is not us ed i n the

radiator.

A Use clean, fresh water and 50% anti-freeze to fill th e

recovery tank.

A Do not refill recovery tank with coolant over the

"FULL" level mark.

A Be sure to clos e the ra diator c ap se curely. If the cap is

loose or improperly closed, coolant may leak out and decrease the level quickly.

A When coolant is added, coolant level may drop the

first time the engine is started. Stop the engine, and add coolant if necessary.

BRemedies for Rapid Coolant Loss

1. Check for dust and dirt betwee n the radiator fins and cooling tube. Clean the fins and the tubes as if necessary.

2. Check the tension of the fa n belt. If loose, tighten it securely.

3. Check the internal blockage in the radiator cooling tubes. If scale forms in the tubes, clean with the scale inhibitor or its equivalent.

PERIODIC SERVICE30

BChecking Radiator Hoses and Clamps

To avoid personal injury: A Be sure to check radiator hoses and

hose clamps periodically. If radiator hoses are damaged or coolant leaks out, overheating can occur.

Check to see if radiator h oses are properly fixed every 250 hours of operation or 6 months, whichever comes first.

1. If hose clamps are loose or water leaks, tig hten hose clamps securely.

2. Replace hoses and hose clamps if rad i ato r hoses ar e swollen, hardened or cracked.

Replace hoses and hose clamps every 2 years, or earlier as required, if hoses are found to be swollen, hardened or cracked.

(1) Radiator hose (2) Hose clamp

BPrecaution Overheating

Take the following actions in the event the coolant temperature is nearly or more than the boiling point, which is called "Precaution overheating". Take these actions if the engine’s the alarm lamp lights up.

1. Turn off all output circuit breakers and keep the engine running without load.

2. Do not stop the engine suddenly. Stop it after about 5 minutes of unloaded idling.

3. If the engine stops within about 5 minutes of running under no load, immediately leave an d keep yourself away from the machine. Do not open the hood and any other part.

4. Keep yourself and othe rs well away from the engine for an additional 10 minutes or while the steam continues to blow out.

5. Checking that there is no danger of being burned eliminate the causes of overheating according to the manual, see "TROUBLESHOOTING" section. And then restart the engine.

BCleaning Radiator Core (outside)

If dust is between the fin and tube, wash it away with running water.

A Do not clean radiator with firm tools such as spatulas

or screwdrivers. They may damage the delicate fins or tubes. It can cause coolant lea ks o r d ecr ease cooling performance.

A Be careful to keep water off of electrical parts.

BCleaning the Radiator (inside)

1. Clean up the coolant line inside in the following cases.

A As per the SERVICE INTERVALS list. A When changing the coolant.

2. Use a radiator cleaning agent. This helps wash away scale deposits.

BAnti-freeze

To avoid personal injury: A When using anti-freeze, put on some

protection such as rubber gloves (Anti-freeze contains poison.).

A If should drink anti -freeze, throw up

at once and take medical attention.

A When anti-freeze comes in contact

with the skin or clothing, wash it off immediately.

A Do not mix different types of anti-

freeze. The mixture can produce chemical reaction causing harmful substances.

A Anti-freeze is extremely flammable

and explosive under certain conditions. Keep fire and children away from anti-freeze.

A When draining fluids from the

engine, place some container underneath the engine body.

A Do not pour waste onto the grounds,

down a drain, or into any water source.

A Also, observe the relevant

environmental protection regulations when disposing of antifreeze.

Always use a 50/ 50 mix of l ong-li fe co olant and c lean so ft water in KUBOTA engines. Contact KUBOTA concerning coolant for extreme conditions.

1. Long-life coolant (hereafter LLC) comes in several types. Use ethylene glycol (EG) type for this engine.

31PERIODIC SERVICE

2. Before employing LLC-mixed cooling wate r, flush the radiator with fresh water. Repeat this procedure 2 or 3 times to clean up the radiator and engine block from inside.

3. Mixing the LLC Premix 50% LLC with 50% clean soft water. When mixing, stir it up well, and then fill into the radiator.

4. The procedure for the mixing of water and anti-freeze differs according to the make of the anti-freeze. Refer to SAE J1034 standard, mo re sp ecif ica lly al so to SAE J814c.

Vol %

Anti-freeze

Freezing Point Boiling Point*

CFCF

50 -37 -34 108 226

At 1.013 x 10 Pa (760 mmHg) pressure (atmospheric) A higher boiling point is obtained by using a r adiator pressure cap which permits the development of pressure within the cooling system.

5. Adding the LLC (1) Add only water if the coolant level reduces in the

cooling system by evaporation.

(2) If there is a coolant leak, add the LLC of the same

manufacturer and type in the same coolant percentage.

*Never add any long-life coolant of different

manufacturer. (Different brands may have different additive components, and the engine may fail to perform as specified.)

6. When the LLC is mixed, do no t employ any radiator cleaning agent. Th e LLC contains anticorros ive agent. If mixed with the cleaning agent, sludge may build up, adversely affecting the engine parts.

7. Kubota's genuine long-life coolant has a service life of 2 years. Be sure to change the coolant every 2 years.

A The above data represent industry standards that

necessitate minimum glycol content in the concentrated anti-freeze.

[Engine model : D1703-EBG, V2203-EBG]

5. Replace the element every year or every 6 cleanings.

(1) Air cleaner body (2) Element (3) Wing bolt (4) Evacuator valve

A Make sure the wing bolt for the element is tight

enough. If it is loo se, dust and dir t may be suck ed into the engine, causing premature wearing down the cylinder liner and piston ring earlier, and thereby resulting in poor power output and need for engine repair.

[Engine model : V3300-EBG]

If the air cleaner is equipped with the secondary element, start it in the following manner : Take steps (1) through (4) foregoing.

5. Replace the primary e lement every year or every 6 cleanings. If the primary element is heavily stained, replace it sooner. At this time, also replace the secondary element.

6. The secondary element should be removed only if it is to be replaced.

7. To protect the engine, d o not remove the secondary element in normal servicing of the primary element.

AIR CLEANER

Since the air cleaner employed on this engine is a dry type, never apply oil to it.

1. Open the evacuator valve once a week under ordinary conditions - or daily when used in severe or dusty conditions. This will get rid of large particles of du st and dirt.

2. Wipe the inside air cleaner clean with cloth if it is dirty or wet.

3. Avoid touching the element except when cleaning.

4. When dry dust adheres to the element, blow compressed air from the inside turning the element. Pressure of compressed air must be unde r 205 kPa (2.1 kgf/cm , 30 psi).

(1) Air cleaner body (2) Cover (3) Secondary element (4) Primary element (5) Evacuator valve

PERIODIC SERVICE32

A Make sure hooking clip is tight enough. If it is loose,

dust and dirt may be sucked into the eng ine, causin g excessive wear or premature engine failure and need for engine repair.

BCleaning Primary Air Filter Element

1. To clean the element, use clean dry compressed air on the inside of the element. Air pressure at the nozzle must not exce ed 205 kPa (2.1 kgf/cm , 30 psi). Maintain reasonable distance between the nozzle and filter.

BEvacuator Valve

Open the evacuator valve once a week under ordinary conditions - or daily when used in dusty condition - to get rid of large particles of dust and dirt.

A If the dust cup is mounted incorrectly, dust or dirt will

not collect in the cup and allow the dust to co me into direct contact with the element an d thus require the element be replaced prematurely.

BATTERY

To avoid personal injury: A Be careful not to let the battery

electrolyte contact your body or clothing.

A Wear eye protection and rubber

gloves, since the diluted sulfuric acid solution burns skin and eyes, and eats holes in clothing. Should this occur, immediately wash it off with running water and get medical attention.

Mishandling of the battery shortens the service life and adds to maintenance costs. Obtain the maximum performance and the longest life of the battery by handling properly and with care. Engine starting will be difficult, if the battery charge is low. Be sure to keep the battery in a fully charged state for best performance and battery life.

BBattery Charging

(1) Air cleaner body (2) Secondary element (3) Primary element (4) Dust cup (5) "TOP" mark (6) Evacuator valve

BFor the Air Cleaner with a Dust Cup

Remove and clean out the dust cup once a week un der normal conditions or daily in extreme conditions. Do not allow the dust cup to fill above half way regardless of conditions. Install the air cleaner dust cup with "TOP" indicated on the rear of the cup in the upward position with hor izontally mounted air cleaner bodies or vertically mounted air cleaner bodies, the cup may be mounted in any direction.

To avoid the possibility of battery explosion: The batteries come in two types: refillable and non-refillable. For using the refillable type battery, follow the instructions below. A DO NOT use or charge the battery if

the fluid level is below the LOWER (lower limit level) mark. Otherwise, the battery component parts may deteriorate prematurely, which will shorten the battery’s service life or may cause an explosion. Immediately, add distilled water until the battery’s fluid level comes somewhere between the UPPER and LOWER levels.

A When the battery is being activated,

hydrogen and oxygen gases in the battery are extremely explosive. Keep open sparks and flames away from the battery at all times, especially when charging the battery.

A When charging the battery, ensure

the vent caps are securely in place (if equipped).

A When disconnecting the cable from

the battery, start with the negative terminal, and when connecting them, start with the positive terminal first.

A DO NOT check the battery charge by

placing a metal object across the terminals. Use a voltmeter or hydrometer.

1. Make sure that each electrolyte level is to the bottom of vent wells, if necessary, add only distilled water in a well-ventilated place.

33PERIODIC SERVICE

(1) Battery electrolyte level (A) "TOO LOW"

(B) "PROPER" (C) "TOO HIGH"

2. To slow charge the battery, connect the charger positive terminal to the battery positive terminal, and the negative to the negative, then recharge in the normal manner.

3. Quick recharging charges the battery at a high rate in a short time. This is only for emergencies.

4. Recharge the battery as ea rly as possible, or battery life will be extremely shortened.

5. When exchanging an old battery for a new one, use a battery of equal specifications shown in page 2.

(1) Thick cable red (+) (2) Battery case (3) Negative / ground cable black (-) (4) Plug

A Connect the charger positive termina l to the battery

positive terminal, and negative to the negative.

A When disconnecting the cable from the batte ry, start

with the negative terminal first. When connecting the cable to the b attery, start with the positive terminal first. If reversed, the contact of t ools on the battery may cause a shortage.

(A) "HIGHEST LEVEL" (B) "LOWEST LEVEL"

PERIODIC SERVICE34

BInstructions for Long Term Storage

1. When storing the generator fo r long periods of time, remove the battery, adjust the electrolyte to the proper level, and store in a dry and dark place.

2. The battery naturally discharges while it is stored. Recharge it once a month in summer, and every 2 months in winter.

6. Clamp the other cable to the negative (black, (-) or neg.) terminal of the helper battery.

7. Clamp the other end to the engi ne block or frame of the generator as far from the dead battery as possible.

8. Start the disabled generator.

9. disconnect the jumper cables in the exact reverse order of attachment. (Steps 7, 6 and 5).

10.Remove and discard the damp rags.

BBattery Boost Starting

To avoid serious personal injury. A Battery gases can explode. Keep

cigarettes, sparks, and flames away from battery.

A If generator battery is frozen, do not

battery boost start engine.

A DO NOT connect other end of

negative (-) jumper cable to negative (-) terminal of generator battery.

When battery boost starting engine, follow the instructions below to safely start the engine.

1. Bring helper batter y of the same voltage as disabled generator within easy cable reach.

2. Put on safety goggles and rubber gloves.

3. Ensure the vent caps are securely in place. (if equipped)

4. Cover vent caps w it h da mp r ag s. Do no t a ll ow t he r ag to touch the battery terminals.

5. Attach the red clamp to th e positive (red, (+) or pos.) terminal of the dead battery and clamp the other end of the same cable to the positive (red, (+) or pos.) terminal of the helper battery.

A This machine has a 12 volt negative (-) ground starting

system.

A Use only same voltage for jump starting. A Use of a higher voltage source on generators

electrical system could result in severe damage to generators electrical system.

ELECTRIC WIRING

To avoid personal injury: Shorting of electric cable or wiring may cause a fire.

A Check to see if electric cables and

wiring are swollen, hardened or cracked.

A Keep dust and water away from all

power connections. Loose wiring and terminal parts make bad connections, be sure to repair them before starting the engine.

Damaged wiring reduces the capacity of electrical parts. Change or repair damaged wiring immediately.

(1) Dead battery (2) Lay a damp rag over vent caps. (3) Jumper cables (4) Engine block or frame (5) Helper battery (A) Connect cables in numerical order. Disconnect in reverse order after use.

35PERIODIC SERVICE

FAN BELT

BAdjusting Fan Belt Tension

To avoid personal injury: A Be sure to stop the engine and

remove the key before checking the belt tension.

A Be sure to reinstall the detached

safety shield after maintenance or checking.

[Engine model : D1703-EBG, V2203-E BG]

Proper fan belt tension

[Engine model : V3300-EBG]

Proper fan belt tension

A deflection of between 7 to 9 mm when the belt is pressed in the middle or the span.

A deflection of between 10 to 12 mm when the belt is pressed in the middle of the span.

FULLY BUNDED

A Before installing the unit all environmental factors

must be considered. Generator installation must comply with local building codes, fire regulations and environmental requirements. Use these instructions as a general guide only, t he complete installation must comply with all local, state, and federal building codes, fire ordinances, and any other applicable regulations.

1. Open the access door and check for anything unusual every workday.

2. Look at the point (1) to make sure anything accumulated will not spill out.

3. If an accumulation may co me ou t, lo ose n the plug (3) to drain the unit.

4. Finally, retighten up the plug.

1. Stop the engine and remove the key.

2. Apply moderate thumb pressure to belt between pulleys.

3. If tension is incorrect, loosen the alternator mounting bolts and, using a l ever p lace d bet wee n the a lt ernat or and the engine block, pull the alterna tor out until the deflection of the belt falls within acceptable limits.

4. Replace fan belt if it is damaged.

A If belt is loosen or damage d and the fan is dama ged,

it could result in overheating or insufficient char ging. Adjust correctly or replace the belt.

(1) Check point (2) Fully bunded (Base bunded to 110% capacity) (3) Containment drain point (Plug size: 3/4)

Engine model Fully bunded capacity

D1703-EBG, V2203-EBG 84

V3300-EBG 104

(1) Fan belt (2) Bolt and nut

[D1703-EBG, V2203-EBG]

(A) 7 to 9 mm (under load of 98 N)

[V3300-EBG]

(A) 10 to 12 mm (under load of 64 N)

36 TRANSPORTING / STORAGE

TRANSPORTING / STORAGE

MOKUJIYOU

BTransporting

BLifting Procedure

To avoid personal injury: A Secure the generator to prevent

movement during operation.

A DO NOT stand near or under the

generator while it is suspended.

A The generator is heavy. Utilize

suitable equipment to lift and transport. Keep hands and feet away from under the suspended generator.

A When transporting the generator,

remove the (-) battery cable, close the fuel cock lever, and keep the generator level to prevent fuel spillage.

1. When transporting the generator, use only suitable transporting equipment, such as crane, fork lift or etc.

2. The generator is equipped with the 2 inlets in the machine bed for forklift forks. Transportability is increased by 2 ways; special forklift openings and 1point lifting hook. Use lifting equipment of sufficient capacity.

To avoid personal injury: A Use hangers and wire ropes which

are strong enough to withstand the weight of the machine.

A The apex of the wire rope (distance

"A") must be a minimum of 127 cm. Or use a spreader bar.

A DO NOT swing while lifting. A DO NOT use the hook when the

bonnet is removed or when any bolts are loose.

When lifting the generator for loading it onto a truck or a ship, follow the method shown below.

Model Approx. gross wt. kg

SQ-1120, SQ-3140 759 SQ-1150, SQ-3200 854 SQ-3300 1015

(1) Wire Rope (2) Fork pockets

(A) Minimum of 127 cm

BStorage

To avoid personal injury: A DO NOT clean the machine with

engine running.

A To avoid the danger of exhaust fume

poisoning, do not operate the engine in a closed building without proper ventilation.

A When storing the generator just after

running, let the engine cool off.

Before storing the generator for more than a few months, remove any dirt on the machine, and:

1. Remove dirty engine coolant, fill with new coolant and run the engine for about 5 minutes. When coolant is added, coolant level dr ops the first time the engine is started, sto p the engine and add more coolant.

2. Remove dirty engine oil, fill with new oil and ru n the engine for about 5 minutes to let the oil penetrate to all the parts.

3. Check all the bolts an d n ut s, an d ti g ht en i f ne ces sa ry .

4. Remove the battery from the generator, adjust the electrolyte level , and recharge it. Stor e the b attery in a dry and dark place.

5. When the engine is not used for a long period of time, run it for about 5 minutes un der no load every 2 to 3 months to keep it fr ee fr om ru st. If th e eng ine i s stor ed without any runnin g, moistur e in the air may condens e into dew over the sliding parts of the engine, resulting in rust.

6. If you forget to run the engine for longer than 5 to 6 months, apply enough engine oil to the valve guide and valve stem seal and make sure the valves work smoothly before starting the engine.

7. Store the generato r in a flat place a nd remove the key.

8. Do not store the generator in a place where fl ammable materials such as dry grass or straw are present.

9. When covering the gener ator for storage, let engine and muffler cool off completely.

10.Operate the engine after checking and repairing damaged wiring or pipes, and clearing flammable materials carried by rodents, insects or birds.

37TRANSPORTING / STORAGE

38 OPERATION OF THE EMERGENCY RELAY

OPERATION OF THE EMERGENCY RELAY

MOKUJIYOU

The SQ series generator is equipped with an emergency unit (EG-20) that is designed to detect trouble and stop the engine automatically.

1. What to detect

Trouble Detection Method

Oil pressure fall

Water temperature rise

Belt broken

Load center cover or door open

Oil pressure switch (ON at below 49 kpa (7 psi))

Water temperature switch (ON at above 115 3 C (239 5 F))

Voltage of alternator terminal L (Charge lamp ON: Stop or trouble) (Charge lamp OFF : Normal)

Safety switch (ON : Open) (OFF : Closed)

*The oil pressure switch stays ON after the start delay period.

*The water temperature switch stays ON after the start delay period.

*The alternator terminal L stays at "L" after the start delay period.

*The door limit switch comes ON when the key switch is set from "START" to "ON" position at starting. (*The door limit switch is located on the load center cover and on the access door. *The door limit switch is activated when the load center cover or the access door is opened.)

Start-up delay time

A All the alarms but the doo r-related one are ke pt inactive for a certa in period of time (7 to 14 seconds) af ter the key

switch is set from "START" to "ON" position.

Start delay period.

This interval is necessary to prevent the engine from shutting down while oil pressure is still low after engine start-up.

2. Method at start-up

1. Set the key switch to "ON" position, and the electric fuel feed pump turns ON.

2. Set the key switch to "GLOW" position, and the solenoid turns ON.

3. Set the key switch to "START" position, and the starter is activated. Turn it back to "ON" position, and the emergency unit starts automatic detecting.

A If the starter is activated b ut the engine fails t o star t, the oil pre ssure switch stays ON. If the key switch is turn ed and

left at "ON" position in this state, the solenoid and fuel electric feed pump will turn OFF after the start delay period. To have the engine restarted, turn the key switch back to "OFF" position again.

3. Method with an alarm

1. If any of the warning lamps is ON, turn OFF the solenoid and electric fuel feed pump and the engine stops.

2. To restart the engi ne, turn the key switch back to "OFF" position then start again.

A When this device stops the engine, it may be that a malfunction and some minor damage to the engine has occurred.

To limit engine damage as much as possible , please do not m ake the assump tion that shut d own was a false alarm. Check unit thoroughly prior to restarting.

A Be sure to turn the key switch back to "OFF" position, or the battery will be dead.

39OPERATION OF THE EMERGENCY RELAY

4. Alarms and Corrective Measures

If a trouble occurs during op eration, a corresp onding indicator lam p lights up and the engine stops. Deter mine at which lamp is ON, and pinp oint and correct the cause of trouble.

(1) Water temperature lamp Lights up if the engine is overheating. (2) Oil pressure lamp Lights up if engine oil pressure is too low. (3) Battery charge lamp Lights up if there is a battery problem or if the belt is broken. (4) Access door open lamp Lights up if the load center cover or the access door is opened.

Light-up Possible Causes Countermeasures

Engine overheating. *See "Precaution Overheating" in

"PERIODIC SERVICE" section. (See page 30.)

Lamp (1)

Lamp (2)

Lamp (3)

Lamp (4)

Water temperature sensor faulty. *Replace the water temperature sensor. Water temperature sensor wiring faulty. *Repair the wiring. Insufficient engine oil. *Add engine oil. Lubricating system in trouble. *Check the system. Oil pressure sensor faulty. *Replace the sensor. Oil pressure sensor wiring faulty. *Repair the wiring. Fan belt loose or damaged. *Readjust belt tension or replace the belt. Alternator terminal in poor contact. *Connect tightly. Alternator problem. *Check the alternator. Access door opened. *Close the door. Limit switch faulty. *Replace the limit switch. Limit switch wiring faulty. *Repair the wiring.

40 TROUBLESHOOTING

TROUBLESHOOTING

MOKUJIYOU

If the engine does not function properly, use the following chart to identify and correct the cause.

BWhen it is Difficult to Start the Engine

Cause Countermeasures

*Check the fuel tank and fuel filter. Remove water, dirt and other

impurities. Fuel is thick and doesn't flow.

Air or water mixed in fuel system.

Thick carbon deposits on orifice of injection nozzle.

Valve clearance is wrong.

Leaking valves *Grind valves.

Fuel injection timing is wrong.

Engine oil becomes thick in cold weather and engine cranks slow.

*As all fuel will be filtered by the filter,

if there should be water or other

foreign matters on the filter, clean th e

filter with kerosene or replace the

filter.

*If air is in the fuel filter or injection

lines, the fuel pump will not work

properly. To attain proper fuel

injection pressure, check carefully for

loosened fuel line coupling, cap nut

and etc.

*Loosen joint bolt atop fuel filter and

air vent screws of fuel injection pump

to eliminate all the air in the fuel

system.

*This is caused when water or dirt is

mixed in the fuel. Clean the nozzle

injection piece, being careful not to

damage the orifice.

*Check to see if nozzle is working

properly or not. If not, install a new

nozzle.

*[Engine model : D1703-EBG,

V2203-EBG]

Adjust valve clearance to 0.18 to

0.22 mm when the engine is cold.

[Engine model : V3300-EBG]

Adjust valve clearance to 0.23 to

0.27 mm when the engine is cold.

*Adjust injection timing

*[Engine model : D1703-EBG]

The injection ti min g 15 .5 before top

dead center.

[Engine model : V2203-EBG]

The injection ti min g 17 .0 before top

dead center.

[Engine model : V3300-EBG]

The injection ti min g 10 .0 before top

dead center.

*Change grade of oil according to the

weather (temperature).

Cause Countermeasures

*Bad valve or excessive wear of Low compression

Battery is discharged and the engine will not crank.

A If the cause of troub le cannot be foun d, contact your

local KUBOTA Dealer.

rings, pistons and liners cause

insufficient compression.

Replace with new parts.

*Charge battery.

*In winter, always remove battery

from machine, charge fully and keep

indoors.

Install in machine at time of use.

BWhen Starter does not Start

Cause Countermeasures

Emergency switch "ON"

Battery discharges too much

Access door is opened.

Defect of contact point or shortage of alternator Lshaped coupler

Alternator defect *Replace. Fuse blows. *Replace.

*Rotate button to reset emergency

stop.

*Recharge battery.

*Close the door.

*Check wiring and repair.

BWhen Output is Insufficient BWhen Engine Suddenly Stops

41TROUBLESHOOTING

Cause Countermeasures

*Clean orifice and needle valve, Carbon stuck around orifice of nozzle piece

Compression is insufficient. Leaking valves

Fuel is insufficient.

Overheating of moving parts

Valve clearance is wrong.

Air cleaner is dirty

Fuel injection pressure is wrong.

Injection pump wear

being very careful not to damage

the nozzle orifice.

*Check nozzle to see if good. If not,

replace with new parts.

*Bad valve and excessive wear of

rings, pistons and liners cause

insufficient compression. Replace

with new parts.

*Grind valves.

*Check fuel system.

*Check lubricating oil system.

*Check to see if lubricating oil filter is

working properly.

*Filter element deposited with

impurities would cause poor

lubrication. Change element.

*Check that bearing clearances are

within factory specs.

*Check injection timing.

[Engine model : D1703-EBG,

V2203-EBG]

*Adjust valve clearance to 0.18 to

0.22 mm with the eng ine is cold.

[Engine model : V3300-EBG]

*Adjust valve clearance to 0.23 to

0.27 mm with the eng ine is cold.

*Clean the element every 250 hours

of operation.

*Adjust to proper pressure.

13.7 Mpa (140 kgf/cm , 1991 psi)

*Do not use poor quality fuel as it will

cause wear of the pump.

Only use No.2-D diesel fuel.

*Check the fuel injec tion pump

element and delivery valve assembly

and replace as necessary.

Cause Countermeasures

*Check the fuel tank and refill the

Lack of fuel

Bad nozzle

Moving parts are overheated due to shortage of lubrication oil or improper lubrication.

fuel, if necessary. *Also check the fue l system for ai r or leaks.

*If necessary, replace with a new nozzle.

*Check amount of engine oil with oil level gauge. *Check lubricating oil system. *At every second oil change, oil filter cartridge should be replaced. *Check to see if the engine bearing clearances are within factory specs.

BWhen Color of Exhaust Smoke is Black

and Excessive

Cause Countermeasures

Fuel governing device bad

Fuel is of extremely poor quality.

Nozzle is bad.

Combustion is incomplete.

Engine is operating in overload condition.

*Contact dealer for repairs.

*Select good quality fuel. Use No.2-D diesel fuel only.

*If necessary, replace with new nozzle.

*Cause is poor atomization, improper injection timing, etc. Because of trouble in injection system or in poor valve adjustment, or compression leakage, poor compression, etc. Check for the cause.

*Diagnose and eliminate reason for overload.

TROUBLESHOOTING42

B When Engine must be Stopped

Immediately

Cause Countermeasures

Engine revolution suddenly decreases or increases.

Unusual sound is heard suddenly.

Color of exhaust suddenly turns dark.

Bearing parts are overheated.

Oil lamp lights up during operation.

*Check the adjustments, injection

timing and the fuel system.

*Check all moving parts carefully.

*Check the fuel injection system,

especially the fuel injection nozzle.

*Check for overload condition.

*Check the lubricating system.

*Check, if the engine bearing

clearances are within factory specs.

*Check the function of the relieve

valve in the lubricating system.

*Check pressure switch.

*Check filter base gasket.

BWhen Engine Overheats

Cause Countermeasures

Engine oil insufficient

Fan belt broken or elongated

Coolant insufficient

Excessive concentration of antifreeze

Radiator net or radiator fin clogged with dust

Inside of radiator or coolant flow route corroded

Fan or radiator or radiator cap defective

Thermostat defective

Temperature gauge or sensor defective

Overload running

Head gasket defective or water leakage

Incorrect injection timing

Unsuitable fuel used

*Check oil level. Replenish oil as required.

*Check all moving parts carefully.

*Replenish coolant.

*Add water only or change to coo lant with the specified mixing ratio.

*Clean net or fin carefully.

*Clean or replace radiator and parts.

*Replace defective parts.

*Check thermostat and replace if necessary.

*Check temperature with thermometer and replace if necessary.

*Reduce load.

*Replace parts.

*Adjust to proper timing.

*Use the specified fuel.

BGenerator Troubleshooting

Trouble Possible causes Correction

Single-phase load applied beyond allowable level (on three phase models).

Unusual noise or vibration

Frame overheated.

Voltage failure to rise.

Voltage too high.

Voltage hunting

Circuit breaker turned OFF.

Pilot lamp failure to light up

Bearing deteriorated. *Replace the bearing. Coupling damaged. *Replace the coupling. Cooling fan inlet or outlet blocked. *Unblock the inlet or outlet. Voltage too high. *Readjust the voltage. Overloaded. *Reduce the load. Voltage maladjusted. *Readjust using the voltage control. AVR excitation output cable broken. *Repair the cable. AVR itself in trouble. *Replace the AVR. Exciter's winding short-circuited or broken. *Replace the generator. AVR excitation input cable broken. *Repair the cable. Generator's winding broken. *Replace the generator. AVR excitation output fuse blown out. *Replace the fuse. Voltage maladjusted. *Readjust using the voltage control. AVR voltage detection cable broken. *Repair the cable. AVR itself in trouble. *Replace the AVR. Mercury arc lamp or such conductive load

connected. Inverter or such switching load connected. *Disconnect such load. AVR itself in trouble. *Replace the AVR.

Connected cable or load short-circuited. Overloaded. *Reduce the load.

Lamp bulb broken. *Replace the bulb. Generator voltage too low. *See "Voltage failure to rise" above.

43TROUBLESHOOTING

*Lower the load to acceptable level.

*Disconnect such load.

*Contact a qualifi ed electrical engineer for inspection.