Kubota SQ-1120 Operator's Manual
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Kubota SQ-1120 Operator's Manual

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  • Page 1 KUBOTA...
  • Page 2 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.

  • Page 3: Safety First

    FOREWORD You are now the proud owner of a KUBOTA Diesel Engine Generator. This gen- erator 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.

  • Page 4: Table Of Contents

    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 POWER..........6 CONNECTING THE LOAD ..................8 Connection Notes......................8 Connecting the Load ......................8 PRE-OPERATION CHECK ..................10 DAILY CHECK......................10 How to Open the Door....................
  • Page 5 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................
  • Page 6 SAFE OPERATION 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.
  • Page 7 SAFE OPERATION 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.
  • Page 8 SAFE OPERATION 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.
  • Page 9 SAFE OPERATION 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.
  • Page 10 SAFE 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.
  • Page 11 SAFE OPERATION 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.
  • Page 12 SAFE OPERATION 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.
  • Page 13 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.
  • Page 14 SAFE OPERATION (9) Part No. G3102-8806-0 (11) Part No. 6C090-5896-0 (10) Part No. G3341-8822-0 (12) Part No. G3341-8895-0...
  • Page 15 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.

  • Page 16: Safe Operation

    However, when in need of parts or major service, be sure to see your KUBOTA Dealer. For service, contact the KUBOTA Dealership from which you purchased your generator or your local KUBOTA Dealer.

  • Page 17: Specifications

    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 Standby Output kVA (kW) 11.8 (11.8) 16 (16) 15.4 (12.3) 22 (17.6) 33 (26.4) Continuous Output kVA (kW) 11.2 (11.2)

  • Page 18: Part Names

    SPECIFICATIONS BPart Names [SQ-1120, SQ-3140, SQ-1150, SQ-3200] [SQ-3300] (1) Fuel tank cap-with lockable key (2) Cooling air inlet (1) Generator (3) Door (2) Battery (4) Cooling air outlet (3) Radiator (5) Handling hook (4) Recovery tank (6) Radiator top cover...

  • Page 19: Instrument Panel And Part Names

    INSTRUMENT PANEL AND PART NAMES C 3 Phase Type MOKUJIYOU BControl Panel [SQ-3140, SQ-3200, SQ-3300] C 1 Phase Type [SQ-1120, SQ-1150] (1) A.C. Voltmeter (2) Frequency meter (3) A.C. Ammeter (1) A.C. Voltmeter (4) Pilot lamp (Green lamp) (2) Frequency meter (5) Glow plug lamp (3) A.C.

  • Page 20: Control Box

    INSTRUMENT PANEL AND PART NAMES BControl Box C 1 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 (Battery) TB3...

  • Page 21: Preparation To Supply The Electric Power

    PREPARATION TO SUPPLY THE ELECTRIC POWER PREPARATION TO SUPPLY THE ELECTRIC POWER 1. Generator grounding One possible connection method for construction site use is as follows: 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.
  • Page 22 11.2 kVA 7.0 kVA SQ-1120 A Power factor calculations. (11.2 kW) (5.6 kW) The power factor calculation is used to determine 15.0 kVA 9.5 kVA input of the electrical devices.

  • Page 23: Connecting The Load

    CONNECTING THE LOAD CONNECTING THE LOAD MOKUJIYOU BConnection Notes BConnecting the Load To avoid personal injury: To avoid personal injury: A Before generator A Connect or disconnect the load to connected to a building’s electrical the AC receptacle only when the system, a licensed electrician must engine is stopped.
  • Page 24 CONNECTING THE LOAD C Single phase 2 terminals 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) (1) Motor A For single phase power source Use (O)-(U)

  • Page 25: Pre-Operation Check

    PRE-OPERATION CHECK PRE-OPERATION CHECK DAILY CHECK To prevent problems from occurring, it is important to know the condition of the generator. 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.

  • Page 26: Engine Oil

    PRE-OPERATION CHECK 1. Remove the vent plugs. 2. Fill cells up to the upper level with electrolyte. BCoolant [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. To avoid personal injury: 4.

  • Page 27: Fuel

    PRE-OPERATION CHECK 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.

  • Page 28: Operating The Generator

    OPERATING THE GENERATOR OPERATING THE GENERATOR SAFETY DEVICES To avoid personal injury: A Read " SAFE OPERATION" in the front To avoid serious injury or death: of this manual. A DO NOT modify or remove the safety A Read the danger, warning and caution devices.

  • Page 29: Starting The Engine

    OPERATING THE GENERATOR STARTING THE ENGINE 3. Ensure that the fuel lever is set to the "OPEN" Position. To avoid personal injury: A To prevent contact with live components rotating parts, 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.

  • Page 30: Warm-Up In Cold Ambient Temperatures

    OPERATING THE GENERATOR 6. Turn the key to "GLOW" position. BWarm-up in Cold Ambient Temperatures In cold weather, the engine oil may be cold with increased A See "COLD WEATHER STARTING" section as to the viscosity. This can delay oil circulation or abnormally low preheating times.

  • Page 31: Cold Weather Starting

    OPERATING THE GENERATOR COLD WEATHER STARTING 11. Turn ON the circuit breaker on the If the ambient temperature is below * -5 C (23 F) and the control panel. engine is very cold, start it in the following manner: Take steps (1) through (5) in "STARTING THE ENGINE" section.

  • Page 32: Stopping The Engine

    OPERATING THE GENERATOR STOPPING THE ENGINE 4. Turn the main switch (key) to the "OFF" position. 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. (1) Main switch (Key) (A) "OFF"...

  • Page 33: Emergency Stop Switch

    OPERATING THE GENERATOR EMERGENCY STOP SWITCH A If the emergency stop switch 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 occurs, press the switch (1) and the engine must be stopped immediately.

  • Page 34: Maintenance

    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 disposing of oil, fuel, coolant, filters and batteries.

  • Page 35: Service Intervals

    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.
  • Page 36 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.

  • Page 37: Periodic Service

    Fuel tank capacity Model Capacity BFuel Level Check and Refueling SQ-1120, SQ-3140, 1. Check to see that the fuel level is above the lower limit [Engine model : D1703-EBG] of the fuel level gauge. SQ-1150, SQ-3200 2. If the fuel is too low, add fuel to the upper limit. Do not [Engine model : V2203-EBG] overfill.

  • Page 38: Air Bleeding The Fuel System

    PERIODIC SERVICE BAir Bleeding the Fuel System 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. To avoid personal injury; A DO NOT bleed a hot engine as this 1.

  • Page 39: Fuel Filter Cartridge Replacement

    PERIODIC SERVICE BFuel Filter Cartridge Replacement [Engine model : V3300-EBG] Replace the fuel filter cartridge 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 BCleaning the Water Separator...

  • Page 40: Draining Water In The Fuel Tank

    PERIODIC 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.

  • Page 41: Checking Oil Level And Adding Engine Oil

    [Engine model : V3300-EGB] 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 classification and Proper SAE Engine Oil Viscosity according to the ambient temperatures where the engine is operated.

  • Page 42: Changing Engine Oil

    PERIODIC SERVICE BChanging Engine Oil BReplacing the Oil Filter Cartridge To avoid personal injury: To avoid personal injury: A Be sure to stop the engine before A Be sure to stop the engine before draining engine oil. changing the oil filter cartridge. A When draining engine oil, place a A Allow engine...

  • Page 43: Radiator

    PERIODIC SERVICE 5. After the new cartridge has been replaced, the engine 2. If the radiator is provided with a recovery tank, check oil level normally decreases a little. Therefore run the the coolant level of the recovery tank. When it is engine for a while and check for oil leaks through the between the "FULL"...

  • Page 44: Changing Coolant

    A If the radiator cap has to be removed, proceed with caution and securely retighten the cap. A If coolant is leaking, consult your local KUBOTA Dealer. A Make sure that muddy or sea water is not used in the radiator.

  • Page 45: Checking Radiator Hoses And Clamps

    Always use a 50/50 mix of long-life coolant and clean soft 5. Checking that there is no danger of being burned water in KUBOTA engines. eliminate the causes of overheating according to the Contact KUBOTA concerning coolant for extreme manual, see "TROUBLESHOOTING" section. And conditions. then restart the engine.

  • Page 46: Air Cleaner

    If the primary element is heavily stained, 7. Kubota's genuine long-life coolant has a service life of replace it sooner. At this time, also replace the 2 years. Be sure to change the coolant every 2 years.

  • Page 47: Cleaning Primary Air Filter Element

    PERIODIC SERVICE BATTERY A Make sure hooking clip is tight enough. If it is loose, dust and dirt may be sucked into the engine, causing excessive wear or premature engine failure and need for engine repair. To avoid personal injury: A Be careful not to let the battery electrolyte contact your body or BCleaning Primary Air Filter Element...
  • Page 48 PERIODIC SERVICE 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.

  • Page 49: Instructions For Long Term Storage

    PERIODIC SERVICE 6. Clamp the other cable to the negative (black, (-) or BInstructions for Long Term Storage neg.) terminal of the helper battery. 7. Clamp the other end to the engine block or frame of 1. When storing the generator for long periods of time, the generator as far from the dead battery as possible.

  • Page 50: Fan Belt

    PERIODIC SERVICE FAN BELT FULLY BUNDED BAdjusting Fan Belt Tension A Before installing the unit all environmental factors must be considered. Generator installation must comply with local building To avoid personal injury: codes, fire regulations environmental A Be sure to stop the engine and requirements.

  • Page 51: Transporting / Storage

    Transportability is increased by 2 ways; special forklift openings and 1- point lifting hook. Use lifting equipment of sufficient capacity. Model Approx. gross wt. kg SQ-1120, SQ-3140 SQ-1150, SQ-3200 SQ-3300 1015 (1) Wire Rope (A) Minimum of 127 cm...

  • Page 52: Storage

    TRANSPORTING / STORAGE 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.

  • Page 53: Operation Of The Emergency Relay

    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 switch *The oil pressure switch stays ON after the start Oil pressure fall...
  • Page 54 OPERATION OF THE EMERGENCY RELAY 4. Alarms and Corrective Measures If a trouble occurs during operation, a corresponding indicator lamp lights up and the engine stops. Determine at which lamp is ON, and pinpoint and correct the cause of trouble. (1) Water temperature lamp Lights up if the engine is overheating.

  • Page 55: Troubleshooting

    A If the cause of trouble cannot be found, contact your properly. To attain proper fuel local KUBOTA Dealer. injection pressure, check carefully for Air or water loosened fuel line coupling, cap nut...

  • Page 56: When Output Is Insufficient

    TROUBLESHOOTING BWhen Output is Insufficient BWhen Engine Suddenly Stops Cause Countermeasures Cause Countermeasures *Clean orifice and needle valve, *Check the fuel tank and refill the Carbon stuck being very careful not to damage fuel, if necessary. Lack of fuel around orifice of the nozzle orifice.

  • Page 57: When Engine Must Be Stopped Immediately

    TROUBLESHOOTING B When Engine must be Stopped BWhen Engine Overheats Immediately Cause Countermeasures Cause Countermeasures Engine oil *Check oil level. Replenish oil as insufficient required. Engine *Check the adjustments, injection revolution timing and the fuel system. Fan belt broken *Check all moving parts carefully. suddenly or elongated decreases or...

  • Page 58: Generator Troubleshooting

    TROUBLESHOOTING BGenerator Troubleshooting Trouble Possible causes Correction Single-phase load applied beyond allowable *Lower the load to acceptable level. level (on three phase models). Unusual noise or vibration Bearing deteriorated. *Replace the bearing. Coupling damaged. *Replace the coupling. Cooling fan inlet or outlet blocked. *Unblock the inlet or outlet.
  • Page 59 TROUBLESHOOTING...

This manual is also suitable for:

Sq-3140Sq-1150Sq-3200Sq-3300

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