Kubota SQ-1120, SQ-3140, SQ-1150, SQ-3200, SQ-3300 Operator's Manual
K UBOT A
3
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be outdated.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.
3
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.
3
DANGER : Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
3
WARNING : Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
3
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
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