MQ Power DCA6SPX4F Operator's Manual

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OPERATION MANUAL

MODEL DCA6SPX4F

PORTABLE GENERATOR

(KUBOTA D1105-E4B-BGDE-1-S1 DIESEL ENGINE)

Revision #2 (03/12/21)

To ﬁnd the latest revision of this publication or

associated parts manual, visit our website at:

www.mqpower.com

THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

PROPOSITION 65 WARNING

PAGE 2 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

REPORTING SAFETY DEFECTS

If you believe that your vehicle has a defect that could cause a crash or could cause injury or death, you should immediately inform the National Highway Trafﬁc Safety Administration (NHTSA) in addition to notifying Multiquip at 1-800-421-1244.

If NHTSA receives similar complaints, it may open an investigation, and if it ﬁnds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA cannot become involved in individual problems between you, your dealer, or Multiquip.

To contact NHTSA, you may either call the Vehicle Safety Hotline toll-free at 1-888327-4236 (TTY: 1-800-424-9153), go to http://www.nhtsa.dot.gov; or write to:

Administrator NHTSA 1200 New Jersey Avenue S.E. Washington, DC 20590

You can also obtain information about motor vehicle safety from http://www.safecar.gov.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 3

DCA6SPX4F 60 Hz Generator

Proposition 65 Warning ........................................... 2

Reporting Safety Defects ......................................... 3

Table of Contents ..................................................... 4

Nameplate/Safety Information ................................. 5

Safety Information ............................................. 6–11

Speciﬁcations (Generator) ..................................... 12

Speciﬁcations (Engine) .......................................... 13

Dimensions ............................................................ 14

Installation ....................................................... 16–17

General Information ............................................... 18

Components (Generator) ....................................... 19

Components Control Panel ................................... 20

Components (Engine) ............................................ 21

Load Applications .................................................. 22

Inspection/Setup .............................................. 23–26

Operation ......................................................... 27–28

Operation/Shutdown .............................................. 29

Maintenance .................................................... 30–35

Troubleshooting (Generator) .................................. 36

Troubleshooting (Generator/Engine) ..................... 37

Troubleshooting (Engine) ................................. 38–39

Generator Wiring Diagram ..................................... 40

Engine Wiring Diagram .......................................... 41

TABLE OF CONTENTS

NOTICE

Speciﬁcations are subject to change without notice.

PAGE 4 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

SAFETY DECALS

B90400040

WARNING

MOVING PARTS can cause severe injury. DO NOT operate with doors open.

Stop engine before servicing.

Safety decals are attached to the generator as shown in Figure 1. Keep these safety decals clean at all times. When the safety decals become worn or damaged, contact your nearest dealer or the Multiquip Parts Department.

CAUTION! ATTENTION!

READ OWNER’S SERVICE MANUAL BEFORE OPERATING OR

EMISSION CONTROL INFORMATION

SUPPLEMENTAL LABEL

KUBOTA Corporation

KUBOTA

XXXXX XXXXXX XXXX XXXXX XXXXXXX

XXXX

WHISPERWATT

DIESEL POWERED AC GENERATOR

MODEL: DAC-6SPX4F

SERIAL No.

AC GENERATOR/ GENERATRICE CA

XXXXXXX

XXXXXXX XXXXXXX

XXXXXXX

DIESEL ENGINE/ MOTEUR DIESEL

XXXXXXX

XXXXX XXXXXX XXXX XXXXX XXXXXXX

XXXX

GENERTRICE CA DIESEL

XXXXXXX

XXXXX XXXXXX XXXX XXXXX XXXXXXX

XXXX

XXXXX XXXXXX XXXX XXXXX XXXXXXX

XXXX

XXXXX XXXXXX XXXX XXXXX XXXXXXX

XXXX

INC.

SIDE VIEW

A55100100

SERVICING THIS MACHINE.

ALWAYS KEEP UNAUTHORIZED INEXPERICENCED UNTRAINED PEOPLE AWAY FROM THIS MACHINE.

MAKE SURE ALL SAFETY DEVICES ARE OPERATIONAL BEFORE THIS MACHINE IS STARTED. MAKE SURE ENGINE IS TURNED OFF AND SPARK PLUG WIRE DISCONNECTED BEFORE SERVICING THE MACHINE OR COMING IN CONTACT WITH ANY MOVING PART. IF EQUIPMENT IS POWERED BY AN ELECTRIC MOTOR DISCONNECT ELECTRICAL PLUG.

NEVER LEAVE MACHINE UNATTENDED WHEN OPERATING ALWAYS STOP ENGINE AND ALLOW ENGINE TO COOL BEFORE ADDING FUEL OR OIL.

WARNING / AVERTISSEMENT

To avoid injury, you MUST read and understand operator’s manual before using this machine.

This machine to be operated by qualified personnel only.

Pour éviter toute blessure, vous devez llre et comprendre le manuel de l’ utilisateur avant d’utiliser cette manuel.

Cette machine doit étre opérer par un personnel qualifié. Demandez une formation si nécessaire.

NOTICE

For safety decals part numbers, reference parts manual.

A55200070A

WARNING!

Before connecting this generator to any building’s electrical system, a licensed electrician must install an isolation (transfer) switch.

Serious injury or death may result without this transfer switch.

ATTENTION!

Avant de brancher unité à un bâtiment, un

cette interrupteur d’isolation doit être installé par un technicien diplômé.

Utiliser cet appareil sans I’interrupteur d’isolation peut entraîner des blessures graves voires mortelles.

II est impératif de lire le manuel d’utilisation avant d’utiliser ou de réparer cet équipement.

II est impératif degarder tout personnel non authorisé ou non qualifié à distance de cet equipement.

Assurez vous que tout equipement de sécurité est fonctionnel avant d’engager l’equipement. Assurez vous que le moteur est éteint et que le fil de la bougie est d’econnecté avant de réparer la machine ou vant tout contact avec toute pièce en mouvement. Si l’equipement est alimenté par un moteur électrique débranchez l’appareil.

Ne laissez jamis l’appareil sans supervision quand il est en marche, II est impératif d’arrêter le motour et de la laisser refroidir avant d’ajouter de l’huile ou du carburant.

Do not use in rain or snow.

A35200030A

Ne pas utiliser en cas de pluie ou neige.

A35200050

CAUTION!

ATTENTION!

A5520080

TOP VIEW

A3520000A

WARNING/ATTENTION

Only operate machine in well ventilated areas. Do not inhale exhaust gases. N’utilizez l’equipment que dans des endroits bien aérés. Ne respirez paz les gas d’échappement.

Only qualified personnel should install, use,

Dangerous

or service this equipment.

Gas/Gas

Seul un personnel qualifié devrait avoir

dangereux

l’authorisation d’installer d’utilisier ou de réparer cet équipement.

A63210090A

WARNING/ATTENTION

HOT COOLANT can cause severe burns.

Do not remove cap if radiator is hot. Liquide réfrigérant chaud peut causer des brûlures graves. N’ôtez pas le capuchon si le radiateur est chaud.

A55200180

WARNING

Operation of this equipment may create sparks that can start fires around dry vegetation.

A spark arrestor may be required. The operator should contact local fire agencies for laws or regulation relating to fire prevention requirements.

Des étincelles pouvant enflammer la végétation séche environnante peuvent être produites pendant le fonctionnement de cet équipement.

Un pare–étincelles peut être requis. L’opérateur doit contacter les agences anti–incendie locales pour s’ informer des lois ou feglementations concernant les exigences de prévention–incendie

DANGER

Cigarettes, ames or sparks could cause battery to explode.Always shield eyes and face from battery or adjust post connections without proper instruction and training.

KEEP VENT CAPSTIGHT AND LEVEL

POISON

Contains sulfuric acid.Avoid contact with skin, eyes or clothing. In event of accident ush with water and call a physician immediately.

KEEP OUT OF REACH OF CHILDREN

DANGER

Cigarettes, flammes ou étincelles peuvent causer I’explosion de la batterìe. Protégez toujours le visage et les yeux quand à proximité de la batterìe. Ne chargez pas la batterìe, n’utilisez pas les cablesde démarrage ou n’ajustez pas les poteaux de la batterìe sans instructions or pratique

Gardez le bouchon ventilateur au niveau et bien serré

POISON

Contient de l’acide sulfurique. Evitez tout contact avec la peau, les yeux ou vêtements. En cas d’accident rincez avec de l’eau et appelez un médecin immédiatement.

Gardez les enfants à distance

A90400020

EXPLOSIVE GASES

. Do not charge or use booster cables

CAUSES SEVERE BURNS

A63210110A

Gas explosifs

peut causer des brûlures sévères

A63210140

Do not touch output terminals or internal wiring while unit is operating. Turn off power before servicing. Ne touchez ni les terminaux externes ou le cablage electrique interne lorsque que l’équipement est en operation. Eteindre avant de réparer. Only qualified personnel should install, use,

Electrical

or service this equipment.

shock hazard Possibilité

Seul un personnel qualifié devrait avoir

de choc electrique

l’authorisation d’installer d’utilisier ou

A63210100A

de réparer cet équipement.

FRONT VIEW

CAUTION/ ATTENTION

Do not operate with open doors. N’ utilisez pas l’unité quand les portes sont ouvertes.

Figure 1. Safety Decals

WHISPERWATT 6kW AC GENERATOR

211052

MAIN AC CIRCUIT BREAKER DISJONCTEUR PRINCIPALE

DE COURANT CA

A55200120

240

120V120

AC VOLTMETER VOLTOMETRE CA

DECREASE

INCREASE

DIMINUTION

AUGMENTATION

VOLTAGE REGULATOR

COMPTEUR D’ HEURE

REGULATEUR DE TENSION

SIDE VIEW

RUN

MARCHE

HEAT

STOP

PRECHAUFFAGE

ARRET

START

DEMARRAGE

HOURS

HOUR METER

STARTER SWITCH COMMTATEUR DE DEMARRAGE

THE POSSIBILITY EXISTS OF ELECTROCUTION IF GENERATOR/WELDER IS NOT PROPERLY GROUNDED. ALWAYS CONNECT EARTH GROUND (GROUND ROD) TO GENERATOR G.F.C.I. GROUND TERMINAL.

IL Y AURAIT UN RISQUE D’ÉLECTROCUTION À MOINS QUE LA GÉNÉRATRICE/SOUDEUSE NE SOIT PROPREMENT MISE À LA TERRE. S’ASSURER DE RELIER À LA MASSE (BARRE DE MASSE) LA BORNE DE MISE À LA TERRE G.F.C.I. DE L’APPAREIL.

GROUND ROD FOR EARTH GROUND BARRE DE MASSE

CONNECT TO BUILDING GROUND IF REQUIRED ARELIER À LA MASSE D’OUVRAGE EVENTUELLEMENT

8 FT. MINIMUM 8 PIEDS MINIMUM

REFERENCE NEC 250-52 (C) RÉFERÉNCE NEC 250-52 (C)

DANGER

Using a generator indoors CAN KILL YOU IN MINUTES. Utilser un générateur à l’ intérieur VOUS TUERA EN QUELQÙES MINUTES.

Exhaust contains carbon monoxide, a poison gas you cannot see or smell. Les gaz d’ échappement contiennent du monoxyde de carbon, un gaz toxique invisible et inodore.

NEUTRAL BONDED TO FRAME

120V

120

GAC-2.2H

NEUTRE MIS A LA MASSE A

15A

LA CARCASSE DU MOTEUR

Honda Engines

211052

AC CIRCUIT BREAKER INTERRUPTEUR DE

OFF

GR PRISE DE

COURANT PRINCIPAL

TERRE

NEVER use in enclosed or partially

enclosed areas. Utilisation INTERDITE dans un espace clos ou partiellement clos.

CAUTION/ATTENTION

HOT PARTS can burn skin. DO NOT touch until the machine

has sufficiently cooled.

Danger de brûlure, pièces chaudes. Ne touchez pas avant que l’appareil

ne soit suffisamment refroidi.

A65200040A

GROUND TERMINAL PRISE DE TERRE

GROUND CABLE #8 MINIMUM CÂBLE DE MASSE #8 MINIMUM

FOR FURTHER GROUNDING INSTRUCTIONS READ MANUAL POUR PLUS DE DÉTAILS CONCERNANT LA MISE Á LA TERRE, LIRE LE MANUEL

NEUTRAL BONDED TO FRAME

120V

120

GAC-2.2H

NEUTRE MIS A LA MASSE A

15A

LA CARCASSE DU MOTEUR

Honda Engines

211052

AC CIRCUIT BREAKER INTERRUPTEUR DE

OFF

GR PRISE DE

COURANT PRINCIPAL

TERRE

NEUTRAL BONDED TO FRAME

120V

120

GAC-2.2H

NEUTRE MIS A LA MASSE A

15A

LA CARCASSE DU MOTEUR

Honda Engines

211052

AC CIRCUIT BREAKER INTERRUPTEUR DE

OFF

GR PRISE DE

COURANT PRINCIPAL

TERRE

ONLY use outdoors and away from open windows, doors, and vents. Utilisation UNIQUEMENT à l’ extér leur portes et trous d’ aération

A91110030

A90400010

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 5

SAFETY INFORMATION

Do not operate or service the generator before reading the entire manual. Safety precautions should be followed at all times when operating this generator. Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others.

SAFETY MESSAGES

The four safety messages shown below will inform you about potential hazards that could injure you or others. The safety messages speciﬁ cally address the level of exposure to the operator and are preceded by one of four words:

DANGER, WARNING, CAUTION

SAFETY SYMBOLS

Potential hazards associated with the operation of this generator will be referenced with hazard symbols which may appear throughout this manual in conjunction with

safety messages.

DANGER

Indicates a hazardous situation which, if not avoided,

WILL result in DEATH or SERIOUS INJURY.

WARNING

Indicates a hazardous situation which, if not avoided, COULD result in DEATH or SERIOUS INJURY.

or NOTICE.

CAUTION

Indicates a hazardous situation which, if not avoided, COULD result in MINOR or MODERATE INJURY.

NOTICE

Addresses practices not related to personal injury.

PAGE 6 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

GENERAL SAFETY

CAUTION



 ALWAYS know the location of the nearest phone or keep

Also, know the phone numbers

ﬁ re department.

This information will be invaluable in the case of an

These devices are intended for operator safety.

severe injury,

. Disconnection of any of

lubricate components or attempt service on a

ensure the generator is on level ground

keep the generator in proper running condition.

Fix damage to the generator and replace any broken

store the generator properly when it is not being used. The generator should be stored in a clean, dry location out of the reach of children and unauthorized

NEVER operate this generator without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required by the job or city and state regulations.

NEVER operate this generator when not feeling well due to fatigue or illness, or when on medication.

NEVER operate this generator under the inﬂ uence of

drugs or alcohol.

SAFETY INFORMATION

a phone on the job site.

of the nearest ambulance, doctor, and

emergency.

GENERATOR SAFETY

DANGER

 NEVER operate the generator in an

explosive atmosphere or near combustible materials. An explosion or ﬁ re could result causing severe bodily harm or even death.

WARNING

 NEVER disconnect any emergency or safety devices

ALWAYS check the generator for loosened threads or

bolts before starting.

NEVER use the generator for any purpose other than

its intended purposes or applications.

NOTICE

This generator should only be operated by trained and qualiﬁ ed personnel 18 years of age and older.

Whenever necessary, replace nameplate, operation and safety decals when they become difﬁ cult to read.

Manufacturer does not assume responsibility for any

accident due to equipment modiﬁ cations. Unauthorized modiﬁ cation of the generator will void all warranties.

NEVER use accessories or attachments that are not

recommended by MQ Power for this generator. Damage to the generator and/or injury to the user may result.

ALWAYS know the location of the nearest

ﬁ re extinguisher.

ALWAYS know the location of the nearest

ﬁ rst aid kit.

Disconnection of these devices can cause

bodily harm or even death

these devices will void all warranties.

CAUTION

 NEVER

running generator.

NOTICE

 ALWAYS

before use.

 ALWAYS



parts immediately.

 ALWAYS

personnel.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 7

ENGINE SAFETY

DANGER



 Operation of the generator may create sparks that

can start ﬁ res around dry vegetation. A spark arrestor may be required. The operator should contact local ﬁ re agencies for laws or regulations relating to ﬁ re prevention

run the engine without an air ﬁ lter or with a dirty

air ﬁ lter. Severe engine damage may occur. Service the

Wet stacking is a common problem with diesel engines which are operated for extended periods with light or no load applied. When a diesel engine operates without sufﬁ cient load (less than 30-35% of the rated output), it will not operate at its optimum temperature. This will allow unburned fuel to accumulate in the exhaust system, which can foul the fuel injectors, engine valves and exhaust system, including turbochargers, and reduce

it must be able to provide fuel and air in the proper ratio and at a high enough engine temperature for the engine

Wet stacking does not usually cause any permanent

damage and can be alleviated if additional load is applied to relieve the condition. It can reduce the system performance and increase maintenance. Applying an increasing load over a period of time until the excess fuel is burned off and the system capacity is reached usually can repair the condition. This can take several

The engine fuel exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled.

The engine of this generator requires an adequate, free ﬂ ow of cooling air. NEVER operate this equipment in any enclosed or narrow area where free ﬂ ow of the air is restricted. If the air ﬂ ow is restricted it will cause injury to people and property and serious damage to the equipment or engine.

When operating the generator outdoors, DO NOT place

the generator near doors, windows or vents that could allow carbon monoxide to enter and build up in occupied spaces.

WARNING

NEVER place hands or fingers inside the engine

compartment when the engine is running.

SAFETY INFORMATION

requirements.

CAUTION

 NEVER touch the hot exhaust manifold,

mufﬂ er or cylinder. Allow these parts to cool before servicing the generator.

NOTICE

 NEVER

air ﬁ lter frequently to prevent engine malfunction.

 NEVER tamper with the factory settings

of the engine or engine governor. Damage to the engine or generator can result if operating in speed ranges above the maximum allowable.



NEVER operate the engine with heat shields or

guards removed.

Keep ﬁ ngers, hands, hair and clothing away

from all moving parts to prevent injury.

NEVER operate the generator with the doors open. Stop the engine before servicing.

DO NOT remove the radiator cap while the engine is hot. High pressure boiling water will gush out of the radiator and severely scald any persons in the general area of the generator.

DO NOT remove the coolant drain plug while the engine

is hot. Hot coolant will gush out of the coolant tank and severely scald any persons in the general area of the generator.

DO NOT drain the engine oil while the engine is hot. Hot oil will gush out and severely scald any persons near the generator.

the operating performance.

In order for a diesel engine to operate at peak efﬁ ciency,

to completely burn all of the fuel.

hours to burn off the accumulated unburned fuel.

PAGE 8 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

SAFETY INFORMATION

 State Health Safety Codes and Public Resources

FUEL SAFETY

TOWING SAFETY



 Refer to the MQ Power trailer manual for additional safety

In order to reduce the possibility of an accident while transporting the generator on public roads,

make sure that the trailer that supports the generator and the towing vehicle are both mechanically

Make sure the hitch and coupling of the towing vehicle are rated equal to or greater than the trailer

inspect the hitch and coupling for wear.

tow a trailer with defective hitches, couplings,

Check the tire air pressure on both the towing vehicle and

Inﬂ ate trailer tires as indicated on side wall

Also check the tire tread wear on both vehicles.

make sure the trailer is equipped with

attach the trailer’s safety chains to

make sure the vehicle and trailer directional, backup, brake, and trailer lights are connected and

• Secure portable power cables in cable tray with

55 MPH

unless posted otherwise. Recommended off-road towing

or less depending on the type

Avoid sudden stops and starts. These can cause skidding or jackkniﬁ ng. Smooth, gradual starts and stops will

The trailer should be adjusted to a level position at all

Codes specify that in certain locations, spark arresters must be used on internal combustion engines that use hydrocarbon fuels. A spark arrester is a device designed to prevent accidental discharge of sparks or ﬂ ames from the engine exhaust. Spark arresters are qualiﬁ ed and rated by the United States Forest Service for this purpose. In order to comply with local laws regarding spark arresters, consult the engine distributor or the local Health and Safety Administrator.

DANGER

NEVER start the engine near spilled fuel or combustible

ﬂ uids. Diesel fuel is extremely ﬂ ammable and its vapors can cause an explosion if ignited.

ALWAYS refuel in a well-ventilated area, away from

sparks and open ﬂ ames.

ALWAYS use extreme caution when working with

ﬂ ammable liquids.

NEVER fill the fuel tank while the engine is

running or hot.

NEVER overﬁ ll the fuel tank. Spilled fuel can ignite if it

comes into contact with hot engine parts or sparks from the ignition system.

Store fuel in appropriate containers, in well-ventilated

areas and away from sparks and ﬂ ames.

NEVER use fuel as a cleaning agent.

NEVER smoke around or near the

equipment. Fire or explosion could result from fuel vapors or if fuel is spilled on a hot engine.

information.



ALWAYS

sound and in good operating condition.

 ALWAYS shut down the engine before transporting.



gross vehicle weight rating.

 ALWAYS

NEVER

chains, etc.



the trailer.

of tire.

 ALWAYS

safety chains.

 ALWAYS properly

the towing vehicle.

 ALWAYS

working properly.

 DOT requirements include the following:

• Connect and test electric brake operation.

tie wraps.

 The maximum speed for highway towing is

is not to exceed 15 MPH of terrain.

CAUTION

Check with your local county or state safety towing regulations, in addition to meeting

Department of Transportation (DOT) Safety Towing Regulations, before towing

your generator.



DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 9

improve towing.

 Avoid sharp turns to prevent rolling.



times when towing.

 Raise and lock the trailer wheel stand in the upright

position when towing.



ELECTRICAL SAFETY



Power Cord/Cable Safety



 NEVER use damaged or worn cables or cords when

connecting equipment to the generator. Inspect the

connected to the generator’s output receptacles. Incorrect connections may cause electrical shock and

make certain that the proper power or

extension cord has been selected for the job. See the

make sure that electrical circuits are properly grounded to a suitable earth ground (ground rod) per the National Electrical Code (NEC) and local codes

Severe injury or

can result from operating an

drop the battery. There is a possibility that the

Place chock blocks underneath the wheels to prevent

rolling while parked.

Place support blocks underneath the trailer’s bumper to prevent tipping while parked.

Use the trailer’s swivel jack to adjust the trailer height to a level position while parked.

DANGER

NEVER touch the output terminals

during operation. Contact with the output terminals during operation can cause electrocution, electrical shock, or burn.

The electrical voltage required to

operate the generator can cause severe injury or even death through physical contact with live circuits. Turn the generator and all circuit breakers OFF before performing maintenance on the generator or making contact with the output terminals.

NEVER insert any objects into the output

receptacles during operation. This is extremely dangerous. The possibility exists of electrical shock, electrocution or death.

Backfeed to a utility system can cause

electrocution and/or property damage. NEVER connect the generator to a

building’s electrical system without a transfer switch or other approved device. All installations should be performed by a licensed electrician in accordance with all applicable laws and electrical codes. Failure to do so could result in electrical shock or burn, causing serious injury or even death.

SAFETY INFORMATION

insulation for cuts.

 NEVER grab or touch a live power

cord or cable with wet hands. The possibility exists of electrical shock, electrocution or death.

 Make sure power cables are securely

damage to the generator.

NOTICE

 ALWAYS

Cable Selection Chart in this manual.

Grounding Safety

DANGER

 ALWAYS

before operating the generator.

death by electrocution

ungrounded generator.

 NEVER use gas piping as an electrical ground.

BATTERY SAFETY

DANGER

 DO NOT

battery will explode.

 NEVER expose the battery to open ﬂ ames,

sparks, cigarettes, etc. The battery contains combustible gases and liquids. If these gases and liquids come into contact with a ﬂ ame or spark, an explosion could occur.

DANGER

NEVER let power cords or cables lay in water.

NEVER stand in water while AC power from the

generator is being transferred to a load.

PAGE 10 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

WARNING

 ALWAYS wear safety glasses when

handling the battery to avoid eye irritation. The battery contains acids that can cause injury to the eyes and skin.

 Use well-insulated gloves when picking up the battery.

 ALWAYS keep the battery charged. If the battery is not

charged, combustible gas will build up.



ENVIRONMENTAL SAFETY/DECOMMISSIONING

Decommissioning is a controlled process used to safely retire a piece of equipment that is no longer serviceable. If the equipment poses an unacceptable and unrepairable safety risk due to wear or damage or is no longer cost effective to maintain (beyond life-cycle reliability) and is to be decommissioned (demolition and dismantlement), be sure to follow the rules below:

Metal recycling involves the collection of metal from

discarded products and its transformation into raw

Recyclers and manufacturers alike promote the process

of recycling metal. Using a metal recycling center

The diesel engine used in this equipment has been designed to reduce harmful levels of carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx)

This engine has been certiﬁ ed to meet US EPA evaporative

Attempting to modify or make adjustments to the engine emission system by unauthorized personnel without proper training could damage the equipment or create an unsafe

Additionally, modifying the fuel system may adversely affect evaporative emissions, resulting in ﬁ nes or other penalties.

The emission control label is an integral part of the emission

If a replacement emission label is needed, please contact

ALWAYS recharge the battery in a well-ventilated environment to avoid the risk of a dangerous concentration of combustible gases.

If the battery liquid (dilute sulfuric acid) comes into

contact with clothing or skin, rinse skin or clothing immediately with plenty of water.

If the battery liquid (dilute sulfuric acid) comes into contact with eyes, rinse eyes immediately with plenty of water and contact the nearest doctor or hospital to seek medical attention.

CAUTION

ALWAYS disconnect the NEGATIVE battery terminal

before performing service on the generator.

ALWAYS keep battery cables in good working condition. Repair or replace all worn cables.

SAFETY INFORMATION

materials to use in manufacturing a new product.

promotes energy cost savings.

EMISSIONS INFORMATION

NOTICE

contained in diesel exhaust emissions.

emissions requirements in the installed conﬁ guration.

condition.

NOTICE

NEVER pour waste or oil directly onto the ground, down

a drain, or into any water source.

Contact your country’s Department of Public

Works or recycling agency in your area and arrange for proper disposal of any electrical components, waste or oil associated with this equipment.

When the life cycle of this equipment is over, remove

the battery and bring it to an appropriate facility for lead reclamation. Use safety precautions when handling batteries that contain sulfuric acid.

Emission Control Label

system and is strictly controlled by regulations.

The label must remain with the engine for its entire life.

your authorized engine distributor.

When the life cycle of this equipment is over, it is

recommended that the frame and all other metal parts be sent to a recycling center.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 11

AC Generator

60 Hz AC Power Source

SPECIFICATIONS (GENERATOR)

Table 1. Speciﬁcations (Generator)

Model DCA6SPX4F

Type 4-pole, brushless, revolving-ﬁeld type

Excitation Solid-state, statically excited system

Speed 1,800 rpm

Cooling System Self-ventilation

Maximum Power Output 7 kW

Continuous Power Output 6 kW

Rated Voltage 120/240V

Current Max./Continuous (120V) 58.3/50 amps

Current Max./Continuous (240V) 29.2/25 amps

Phase Single phase (4 wire)

Frequency 60 Hz

Power Factor 1

Battery

Generator Enclosure Color

Dimensions (L × W × H)

Dry Net Weight

Wet Weight

12-36Ah × 1

White

25.6 × 48.4 × 33.3 in.

(650 × 1,230 × 845 mm)

831 lb. (377 kg)

860 lb. (390 kg)

PAGE 12 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

SPECIFICATIONS (ENGINE)

Table 2. Speciﬁcations (Engine)

Kubota Engine Model D1105-E4B-BGDE-1-S1

Tier 4

Type Vertical, water-cooled, 4-cycle diesel engine

Engine

Bore × Stroke

Displacement 68.53 cu. in. (1,123 cm³)

Number of Cylinders 3

Rated Output 14.1 hp / 1,800 rpm

Fuel #2 diesel fuel

Fuel Capacity No internal fuel tank

Fuel Consumption 0.70 gal. (2.65 liters)/hr.

Coolant Capacity 4.23 quarts (4.0 liters)

Lube Oil Capacity 5.39 quarts (5.1 liters)

Oil Alert System Ye s

Starting Method Electric start

Battery 12 volts @ 36 Ah

3.07 in. × 3.09 in.

(78 mm × 78.4 mm)

Effects of Altitude and Heat

The maximum output of the engines listed above are applicable to supplying electrical power for continuous service at ambient conditions in accordance with SAE test cord J607. The above ambient conditions are at standard sea level, with a barometric reading of 29.92 inches and a temperature of 60°F (15.5°C).

Generally, the engine’s output power will decrease 3-1/2% for each 1,000 feet (305 meters) of altitude above sea level, and 1% for each 10°F (–12.2°C) above the standard temperature of 60°F (15.5°C).

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 13

DIMENSIONS

Figure 2. Dimensions

B C

I H

Table 3. Dimensions

A B C D

48.4 in.

(1,230 mm)

E F G H

Housing

37.2 in.

(945 mm)

I J K L

15.4 in.

(390 mm)

44.5 in.

(1,130 mm)

33.3 in.

(845 mm)

24.0 in.

(610 mm)

2.0 in.

(50 mm)

29.9 in.

(760 mm)

25.6 in.

(650 mm)

PAGE 14 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

7.3 in.

(185 mm)

17.9 in.

(455 mm)

13.8 in.

(350 mm)

NOTES

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 15

INSTALLATION

CONNECTING THE GROUND

Consult with local electrical and safety codes for proper connection based on condition of use.

EXAMPLE of how to ground the unit if the condition of use requires such a device:

The ground terminal on the generator should always be used to connect the generator to a suitable ground when required.

Either copper or aluminum wire can be used as the ground cable. Cable size is determined by the maximum amperage of the generator. Reference Conductor Grounding Table, Article 250 of the NEC handbook.

Connect one end of the ground cable terminal to the generator ground point (Figure 3). Connect the other end of the ground cable to a suitable earth ground (ground rod).

Figure 3. Generator Grounding

NOTICE

Trailer mounted generators are the sole responsibility of MQ Power.

PAGE 16 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

INSTALLATION

OUTDOOR INSTALLATION

Install the generator in an area that is free of debris, bystanders, and overhead obstructions. Make sure the generator is on secure, level ground so that it cannot slide or shift around. Also, install the generator in a manner so that the exhaust will not be discharged in the direction of nearby homes.

The installation site must be relatively free from moisture and dust. All electrical equipment should be protected from excessive moisture. Failure to do so will result in deterioration of the insulation, short circuits, and grounding.

Foreign materials such as dust, sand, lint, and abrasive materials have a tendency to cause excessive wear to engine and alternator parts.

CAUTION

Pay close attention to ventilation when operating the generator inside tunnels and caves. The engine exhaust contains noxious elements. Engine exhaust must be routed to a ventilated area.

INDOOR INSTALLATION

Exhaust gases from diesel engines are extremely poisonous. Whenever an engine is installed indoors the exhaust fumes must be vented to the outside. The engine should be installed at least two feet from any outside wall. Using an exhaust pipe which is too long or too small can cause excessive back pressure which will cause the engine to heat excessively and possibly burn the valves.

MOUNTING

The generator must be mounted on a solid foundation (such as concrete) and set ﬁrmly on the foundation to isolate vibration of the generator when it is running. The generator must be mounted at least 6 inches above the ﬂoor or grade level as referenced in the National Fire Protection Association handbook (NFPA 110, Chapter 7, section 7.4).

GENERATOR GROUNDING

NOTICE

The Occupational Safety and Health Administration (OSHA) and the National Electrical Code (NEC) recommend that if the generator is providing electrical power to a structure (home, ofﬁce shop, trailer, or similar) it must be connected to a grounding electrode system, such a driven ground rod (Figure 3).

If applicable, to guard against electrical shock and possible damage to the equipment, it is important to provide a good EARTH ground (Figure 3).

NOTICE

ALWAYS check with state, province, district and municipalities for electrical grounding requirements before using generator.

Article 250 (Grounding) of the NEC handbook provides guidelines for proper grounding and speciﬁes that the cable ground shall be connected to the grounding system of the building as close to the point of cable entry as practical.

1. Use one of the following wire types to connect the generator to earth ground.

a. Copper

b. Aluminum

NOTICE

Reference Conductor Grounding Table, Article 250 of the NEC handbook for proper conductor wire size. Wire size is determined by the maximum amperage of the generator.

2. When grounding of the generator (Figure 3) is required, connect one end of the ground cable to the ground lug on the generator. Connect the other end of the ground cable to the ground rod (earth ground).

DO NOT remove the metal skids on the bottom of the generator. They are to resist damage to the bottom of the generator and to maintain alignment.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 17

3. NEC Article 250 speciﬁes that the earth ground rod should be buried a minimum of 8 feet into the ground.

NOTICE

When connecting the generator to any building’s electrical system, ALWAYS consult with a licensed electrician.

GENERAL INFORMATION

Generator

The Multiquip DCA6SPX4F is a 6.0 kW (continuous output),

7.0 kW (max. output) AC generator designed as a portable, dual-purpose power source for 60 Hz (single phase), 120/240V for lighting facilities, power tools, submersible pumps and other industrial and construction machinery.

Control Panel

The control panel is provided with the following:

 Single Phase 3-Wire Output Terminal  AC Voltmeter  Circuit Breaker @25 Amps  Starter Switch  Warning Lamp Unit  Hour Meter  Ground Terminal

 Voltage Regulator

Engine Protection System

Engine protection fail-safe features are provided in the event of low oil pressure, high coolant temperature, or failure of the battery to charge. If any of the above conditions occur while operating the generator it will cause a complete unit shutdown.

Excitation System

The DCA6SPX4F generator uses a brushless exciter to create rated-output electricity. This system will use the mechanical energy generated by the 1,800 rpm engine to spin the rotor (or armature) inside the generator (or alternator end).

Excitation current is sourced from the battery to the excitation winding in the stator. Current applied to this coil creates a magnetic ﬁeld. The rotating armature within the stator is then induced with AC current.

Engine

The DCA6SPX4F generator is powered by a water-cooled, 4-cycle, Kubota D1105 diesel engine. This engine is designed to meet every performance requirement of the generator. Reference Table 2, engine speciﬁcations.

In keeping with Multiquip’s policy of constantly improving its products, the speciﬁcations quoted herein are subject to change without prior notice.

Power Tools (Grounding)

When using power tools or electrical equipment requiring AC power from the generator, make sure power tool cord has a ground pin or is double insulated as shown in Figure 4.

Battery Charge Alarm

This unit is equipped with a protective shutdown device that signals the emergency relay and automatically stops the engine when loss of charge from the engine alternator occurs. An indicator lamp will be displayed on the control panel.

Water Temperature Alarm

This unit is equipped with a temperature switch that signals the emergency relay and automatically stops the engine when the temperature of the engine coolant becomes abnormally high.The coolant temperature switch will not function properly if the machine is operated with less than the proper amount of coolant.

Oil Pressure Warning Alarm

This unit is equipped with an oil pressure switch that detects low oil pressure. If the lubricating oil pressure of this unit should become abnormally low, the oil pressure switch signals the emergency relay to shut down the engine. If this condition should occur, please refer to the engine troubleshooting table in this manual.

Figure 4. Ground Pin

NOTICE

Double-insulated power tools and small appliances have specially insulated housings that eliminate the need for a ground. These types of double-insulated power cords are designed so that no part of the device will be electrically live even if the internal insulation fails.

PAGE 18 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

COMPONENTS (GENERATOR)

Figure 5. Generator Components

1. Lifting Hook — Use this hook to lift the generator.

Maximum weight is 827 lb. (375 kg).

2. Air Outlet Exhaust — Allows engine exhaust to exit the generator into the open air. NEVER block this opening.

3. Radiator Cap Access Cover— Remove this cover to gain access to radiator cap.

4. Air Filter — Prevents dirt and other debris from entering the air intake system.

5. Radiator — Provides coolant to engine block.

6. Engine Oil Filler Port — Remove this cap to add engine oil. Use only the recommended oil type. See Table 6.

7. Expansion Bottle — Supplies coolant to the radiator when radiator coolant level is low. Fill to indicated level as shown on expansion bottle.

8. Coolant Drain Plug — Remove this plug to drain coolant from the radiator.

10. Oil Filter — Provides ﬁltering for the engine oil. Change

oil ﬁlter as recommended in the maintenance section of this manual.

11. Dipstick — Remove to check amount and condition

of oil in crankcase.

12. Fuel Filter — Provides ﬁltering for the engine fuel.

Change fuel ﬁlter as recommended in the maintenance section of this manual.

13. Battery Terminals — Connect cables to the terminals

on the battery. Always pay close attention to the polarity of the terminals when connecting to the battery, RED (positive), and BLACK (negative).

14. Battery — Provides +12 VDC power for the generator.

When replacing battery (12V, 35 Ah) use only recommended type battery.

15. Air Inlet Vent — Allows outside air to enter the generator. NEVER block this opening.

9. Oil Drain Plug — Remove this plug to drain oil from

the engine.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 19

211052

COMPONENTS CONTROL PANEL

WHISPERWATT 6kW AC GENERATOR

240

120V120

MAIN AC CIRCUIT BREAKER DISJONCTEUR PRINCIPALE

DE COURANT CA

Figure 6. Control Panel

U O V

7 8

1. Main Breaker — 2-pole, 25-amp circuit breaker

protects the generator from short circuiting or overloading. When starting the generator, always place this circuit breaker in the OFF position.

2. AC Voltmeter — This voltmeter indicates (with a

mark) the rated 60 Hz (single-phase) output voltage. The voltmeter can also be used as a diagnostic tool. If the voltmeter indicator (needle) is below the rated voltage, engine problems may exist (low/high RPM). To prevent damage to the generator or power tools, turn the generator OFF and consult your authorized Multiquip service dealer.

3. Engine Warning Lamps — There are four engine

warning lamps, they are deﬁned as follows:

a. Low Oil Pressure Alarm Lamp — During normal

operation of the generator this lamp will remain OFF. When the ignition switch is placed in the RUN position to start the engine, the lamp will be ON. When the oil pressure rises after start-up the lamp will go OFF. If this lamp is ever lit (ON) during normal operation of the generator, the emergency shutdown system will stop the engine automatically.

b. Water Temperature Alarm Lamp — This lamp

goes ON when the cooling water temperature rises abnormally. If the lamp goes ON during normal operation of the generator, the emergency shutdown system will stop the engine automatically.

AC VOLTMETER

VOLTOMETRE CA

DECREASE

DIMINUTION

VOLTAGE REGULATOR

REGULATEUR DE TENSION

INCREASE

AUGMENTATION

HOURS

HOUR METER

COMPTEUR D’ HEURE

STOP

ARRET

STARTER SWITCH

DE DEMARRAGE

RUN

MARCHE

COMMTATEUR

HEAT PRECHAUFFAGE

START

DEMARRAGE

c. Battery Charge Alarm Lamp — This lamp is ON

when the output voltage of the alternator drops below a set value. If this lamp is ON during normal operation, the emergency shutdown system will immediately stop the engine.

d. Pre-Heat Lamp — The pre-heat lamp will be

ON during the pre-heating cycle (cold weather conditions). When the pre-heat cycle is completed the lamp will turn OFF and the engine can be started.

4. Voltage Regulator Knob — Allows ± 5% manual

adjustment of the generator output voltage.

5. Hour Meter — Indicates number of hours machine has

been in use or hours engine was run.

6. Starter Switch — With key inserted, turn clockwise

to start engine.

7. 120/240V, 1-Phase, 3-Wire Output Terminal —

Provides 240V, 60 Hz output at 25 amps or 120V, 60 Hz at 25 amps × 2.

8. Ground Terminal — This ground connection terminal

must be used at all times. Connect a ground cable between this terminal and a ground rod. Reference grounding section (Figure 3) in this manual for more detailed information.

PAGE 20 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

COMPONENTS (ENGINE)

Figure 7. Kubota D1105 Diesel Engine

INITIAL SERVICING

The engine (Figure 7) must be checked for proper lubrication and ﬁlled with fuel prior to operation. Refer to the manufacturer’s engine manual for instructions and details of operation and servicing.

1. Mufﬂer — Reduces noise and emissions. NEVER

touch mufﬂer when the generator is in use. Always allow time for engine to cool before servicing.

7. V-Belt — ALWAYS make sure V-belt is properly tensioned. A loose or defective V-belt can adversely affect the performance of the generator.

8. Alternator — Provides power to the +12 VDC electrical system. Replace only with manufacturer’s recommended type alternator.

9. Injector Pump — Provides fuel under pressure to the injector nozzles.

2. Cooling Fan Blades — Make sure cooling fan blades

are not bent or broken. A damaged fan blade can cause the engine to run hot and overheat.

3. Oil Filler Cap — Remove this cap to add oil. Fill with

recommended type oil as listed in Table 6.

4. Air Filter — Prevents dirt and other debris from

entering the air intake system. Loosen clips on side of air ﬁlter canister to gain access to ﬁlter element. Replace with manufacturer’s recommended type air cleaner only.

5. Starter Solenoid — Starts engine when ignition key is rotated clockwise to the ON position.

6. Oil Pressure Switch — Monitors engine oil pressure. In the event of low oil pressure engine will shut down.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 21

10. Fuel Feed Pump — Pumps fuel to the injection system.

11. Speed Control Lever — Controls engine speed. This

lever is factory set at 1,800 rpm to maintain proper voltage and frequency. DO NOT adjust this lever out of factory range.

12. Oil Filter — Spin-on type, ﬁlters oil contaminants.

Replace ﬁlter as recommended in the maintenance section of this manual.

13. Oil Dipstick/Gauge — Remove to check amount and

condition of oil in crankcase. Reﬁll or replace with recommended type oil as listed in Table 6.

14. Oil Drain Plug — Remove to drain crankcase oil.

Fill with recommended type oil as listed in Table 6. Crankcase holds a maximum of 2.64 quarts (2.5 liters) of motor oil.

LOAD APPLICATIONS

SINGLE-PHASE LOAD — 60 HZ

Always be sure to check the nameplate on the generator and equipment to ensure the wattage, amperage and frequency requirements are satisfactorily supplied by the generator for operating the equipment.

Generally, the wattage listed on the nameplate of the equipment is its rated output. Equipment may require 130–150% more wattage than the rating on the nameplate, as the wattage is inﬂuenced by the efﬁciency, power factor and starting system of the equipment.

NOTICE

If wattage is not given on the equipment’s nameplate, approximate wattage may be determined by multiplying nameplate voltage by the nameplate amperage.

WATTS = VOLTAGE × AMPERAGE

The power factor of this generator is 1.0. See Table 4 below when connecting loads.

Table 4. Power Factor by Load

Type of Load Power Factor

Single-phase induction motors 0.4–0.75

Electric heaters, incandescent lamps

Fluorescent lamps, mercury lamps

Electronic devices, communication equipment

Common power tools 0.8

Table 5. Cable Selection (60 Hz, Single-Phase Operation)

Current

Amperes

2.5 300 600 1,000 ft. 600 ft. 375 ft. 250 ft.

5 600 1,200 500 ft. 300 ft. 200 ft. 125 ft.

7.5 900 1,800 350 ft. 200 ft. 125 ft. 100 ft.

10 1,200 2,400 250 ft. 150 ft. 100 ft.

15 1,800 3,600 150 ft. 100 ft. 65 ft.

20 2,400 4,800 125 ft. 75 ft. 50 ft.

Load in Watts Maximum Allowable Cable Length

At 100

Volts

CAUTION: Equipment damage can result from low voltage.

At 200

Volts

#10 Wire #12 Wire #14 Wire #16 Wire

1.0

0.4–0.9

1.0

NOTICE

When connecting power tools or equipment, pay close attention to the required starting current capacity.

To determine the running wattage for your load, multiply the running wattage as indicated by steps 1, 2 and 3 below:

1. INCANDESCENT LOADS Lights, heaters and similar appliances. Total the running wattage and multiply by 1. Example: 29 light bulbs @ 100W each = 2.9 kW Use a 3 kW generator.

2. SMALL MOTORS Drills and other small power tools. Total the running wattage and multiply by 2. Example: A 1-inch drill runs at 1 kW. Use a 2 kW generator.

3. LARGE MOTORS Submersible pumps, table saws etc. Total the running wattage and multiply by 3. Example: A conveyor belt runs at 8 kW. Use a 24 kW generator.

NOTICE

Motors and motor-driven equipment draw much greater current for starting than during operation. Always use an adequately sized extension cable which can carry the required load.

DANGER

Before connecting this generator to any building’s electrical system, a licensed electrician must install an isolation (transfer) switch. Serious damage to the building’s electrical system may occur without this transfer switch.

EXTENSION CABLES

When electric power is to be provided to various tools or loads at some distance from the generator, extension cords are normally used. Cables should be sized to allow for

distance in length and amperage so that the voltage drop between the generator and point of use (load) is held to a minimum. Use the cable selection chart (Table 5) as a

guide for selecting proper cable size.

PAGE 22 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

BEFORE STARTING

1. Read safety instructions at the beginning of manual.

2. Clean the generator, removing dirt and dust, particularly the engine cooling air inlet. Caution must be taken to ensure generator is 100% dry before use.

3. Check the air ﬁlter for dirt and dust. If air ﬁlter is dirty, replace air ﬁlter with a new one as required.

4. Check fastening nuts and bolts for tightness.

ENGINE OIL CHECK

NOTICE

This Kubota engine is equipped with a low oil shutdown capability. A built-in sensor will automatically turn off the engine should the oil level fall below a safe operating condition. Make sure the generator is placed on level ground. Placing the generator on level ground will ensure that the low oil sensor will function properly.

INSPECTION/SETUP

Figure 9. Engine Oil Dipstick

4. Verify that the engine oil level is maintained between

the H and L markings on the dipstick as referenced in Figure 9A.

5. If the engine oil level is low (Figure 9C), remove the oil

ﬁller cap (Figure 10) and ﬁll to a safe operating level (max.) as indicated by the dipstick (Figure 9A).

NOTICE

When adding engine oil, DO NOT overﬁll (Figure 9B).

1. To check the engine oil level, place the generator on secure, level ground with the engine stopped.

2. Remove the dipstick from its holder (Figure 8) and wipe clean.

DIPSTICK

6. Fill with recommended type oil as listed in Table 6. Maximum oil capacity is 5.39 quarts (5.1 liters).

Figure 8. Engine Oil Dipstick Removal

3. Reinsert dipstick, then remove dipstick from its holder. Check the oil level shown on the dipstick (Figure 9).

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 23

Figure 10. Engine Oil Filler Port

INSPECTION/SETUP

Table 6. Oil Type

Temperature Oil Type

Above 77°F (25°C)

32°–77°F

(0°–25°C)

Below 32°F (0°C)

SAE 30 or SAE 10W-30 SAE 15W-40

SAE 20 or SAE 10W-30 SAE 15W-40

SAE 10 or SAE 10W-30 SAE 15W-40

FUEL TANK CONNECTION

NOTICE

This generator does not have an internal fuel tank. An external fuel tank needs to be connected.

Make sure the external fuel tank is positioned higher than the engine, or pump the fuel to the engine using a fuel pump.

1. Set the fuel cock to the OFF position.

2. Connect the suction hose to the fuel ﬁlter. Use a suction hose with an inner diameter of 7 mm and attach a hose clamp so that there is no leak in the connection.

3. Connect the return hose to the engine. Use a return hose with an inner diameter of 4 mm and attach it with a hose clamp so there is no leak in the connection.

4. Set the fuel cock to the ON position and make sure there is no fuel leaking at the joints.

COOLANT (ANTIFREEZE)

Kubota recommends antifreeze/summer coolant for use in their engines, which can be purchased in concentrate (and mixed with 50% demineralized water) or pre-diluted. See the Kubota Engine Owner’s Manual for further details.

WARNING

When adding coolant/antifreeze mix to the radiator, DO NOT remove the radiator cap until the unit has completely cooled. The possibility of hot coolant exists which can cause severe burns.

Day-to-day addition of coolant is done from the recovery tank (Figure 11). When adding coolant to the radiator, DO NOT remove the radiator cap until the unit has completely cooled. See Table 7 for engine, radiator, and recovery tank coolant capacities.

NOTICE

Normally, only the coolant level in the recovery tank needs to be checked. However, the radiator cap should be opened once a week to verify that coolant is visible (full) in the radiator.

1. Verify that the coolant level in the coolant recovery tank

is between the FULL and LOW markings as shown in Figure 11.

5. Loosen the bolt at the inlet of the injection pump and remove the air inside the piping.

6. Tighten the bolt when all of the air has come out and the fuel starts to overﬂow.

DANGER

Motor fuels are highly ﬂammable and can be dangerous if mishandled. DO NOT smoke while refueling. DO NOT attempt to refuel if the engine is hot!, running or in the dark.

PAGE 24 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

Figure 11. Coolant Recovery Tank

Table 7. Coolant Capacity

Engine and Radiator 4.23 quarts (4.0 liters)

Reserve Tank (Full) 0.95 quarts (0.9 liters)

INSPECTION/SETUP

Operation in Freezing Weather

When operating in freezing weather, be certain the proper amount of antifreeze (Table 8) has been added.

Table 8. Antifreeze Operating

Temperatures

Vol. %

Antifreeze

Freezing Point

°C °F

50 –37 –34

NOTICE

When the antifreeze is mixed with water, the antifreeze mixing ratio must be less than 50%.

CLEANING THE RADIATOR

The engine may overheat if the radiator ﬁns become overloaded with dust or debris. Periodically clean the radiator ﬁns with compressed air. Cleaning inside the machine is dangerous, so clean only with the engine turned off and the negative battery terminal disconnected.

The fan belt tension is proper if the fan belt bends 10 to 15 mm when depressed with the thumb as shown in Figure 12.

Figure 12. Fan Belt Tension

CAUTION

NEVER place hands near the belts or fan

while the generator set is running.

AIR CLEANER

Periodic cleaning/replacement is necessary. Inspect it in accordance with the Kubota Engine Owner’s Manual.

FAN BELT TENSION

A slack fan belt may contribute to overheating, or to insufﬁcient charging of the battery. Inspect the fan belt for damage and wear and adjust it in accordance with the Kubota Engine Owner’s Manual.

BATTERY

This unit is of negative ground. DO NOT connect in reverse. Always maintain battery ﬂuid level between the speciﬁed marks. Battery life will be shortened if the ﬂuid level is not properly maintained. Add only distilled water when replenishment is necessary.

DO NOT overfill. Check to see whether the battery cables are loose. Poor contact may result in poor starting or malfunctions. ALWAYS keep the terminals firmly tightened. Coat the terminals with an approved battery terminal treatment compound. Replace battery with only recommended type battery.

The battery is sufﬁciently charged if the speciﬁc gravity of the battery ﬂuid is 1.28 (at 68°F). If the speciﬁc gravity should fall to 1.245 or lower, it indicates that the battery is dead and needs to be recharged or replaced.

Before charging the battery with an external electric source, be sure to disconnect the battery cables.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 25

INSPECTION/SETUP

BATTERY CABLE INSTALLATION

ALWAYS be sure the battery cables (Figure 13) are

properly connected to the battery terminals as shown below. The red cable is connected to the positive terminal of the battery, and the black cable is connected to the negative terminal of the battery.

CAUTION

ALWAYS disconnect the negative terminal FIRST and reconnect negative terminal LAST.

NEGATIVE

POSITIVE

ALTERNATOR

The polarity of the alternator is negative grounding type. When an inverted circuit connection takes place, the circuit will be in short circuit instantaneously resulting in alternator failure.

DO NOT put water directly on the alternator. Entry of water into the alternator can cause corrosion and damage the alternator.

WIRING

Inspect the entire generator for bad or worn electrical wiring or connections. If any wiring or connections are exposed (insulation missing), replace wiring immediately.

PIPING AND HOSE CONNECTION

Inspect all piping, oil hose, and fuel hose connections for wear and tightness. Tighten all hose clamps and check hoses for leaks.

If any hose (fuel or oil) lines are defective replace them immediately.

Figure 13. Battery Connections

When connecting battery do the following:

1. NEVER connect the battery cables to the battery terminals when the Ignition Switch is in the START position. ALWAYS make sure that the Ignition Switch is in the OFF position when connecting the battery.

2. Place a small amount of battery terminal treatment compound around both battery terminals. This will ensure a good connection and will help prevent corrosion around the battery terminals.

NOTICE

If the battery cable is connected incorrectly, electrical damage to the generator will occur. Pay close attention to the polarity of the battery when connecting the battery.

CAUTION

Inadequate battery connections may cause poor starting of the generator, and create other malfunctions.

PAGE 26 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

OPERATION

BEFORE STARTING THE ENGINE

CAUTION

The engine’s exhaust contains harmful emissions. ALWAYS have adequate ventilation when operating. Direct exhaust away from nearby personnel.

1. Place the external fuel valve lever in the ON position.

2. NEVER operate the generator with the doors open

(Figure 14). Operation with the doors open may cause insufﬁcient cooling of the unit, and engine damage may result. Close the doors for normal operation.

STARTING THE ENGINE

1. Insert the key into the starter switch (Figure 16) and

turn it to the RUN position.

Figure 16. Starter Switch (RUN)

2. Verify that the oil pressure, temperature, charge and glow plug lamps on the “Engine Warning Lamp Unit Display” are lit. If either lamp is not lit, check the system and wiring (refer to the Engine Operation Manual).

Figure 14. Generator Doors

3. NEVER start the engine with the main circuit breaker in the ON position. Always place circuit breaker (Figure 15) in the OFF position before starting.

Figure 15. Main Circuit Breaker (OFF)

Figure 17. Engine Warning Lamp Unit (ON)

3. Turn the ignition key to the HEAT position (Figure 18).

When the preheat light goes off, turn the key to the START position to start the engine. As soon as the engine starts, release the key. The key will automatically return to the RUN position.

Figure 18. Starter Switch (HEAT/RUN)

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 27

OPERATION

INCREASE

DECREASE

NOTICE

In cold weather conditions, it may be required to extend the duration of the HEAT position for proper starting.

4. If the engine does not start within 10 seconds after

the key is turned to the START position, wait for about 30 seconds and repeat the procedure as described in steps 1–3.

5. When the engine starts, the oil pressure light and charge light should go out. If these lights stay on, immediately stop the engine and check the system and wiring (refer to the Engine Operation Manual).

UNV OUTPUT TERMINAL VOLTAGES

The single-phase, 3-wire output terminal has dual voltage (120/240V) capability. Using an external voltmeter as shown in Figure 21, verify that 120 VAC is present at the output terminals.

1Ø-120 Output Terminal Voltage

The voltage regulator (VR), allows the user to increase or decrease the selected voltage. Turn the voltage regulator knob clockwise to increase the voltage output, turn counterclockwise to decrease the voltage output. Use the voltage regulator adjustment knob whenever ﬁne tuning of the output voltage is required.

2. Measure the voltage at the output terminals. The

reading across terminals U and N (Figure 21A) should be 120 VAC and the voltage across terminals U and V (Figure 21B) should also read 120 VAC.

BLACK

GREEN

RED

WHITE

GROUND CONNECTION

120 VAC

OFF

240

120

300 mV

COM

WHITE

BLACK

MUST BE USED

AT ALL TIMES

RED

GREEN

GROUND CONNECTION

120 VAC

OFF

240

120

300 mV

COM

Figure 21. Output Terminal VoltageVeriﬁcation

(120 VAC)

1Ø-240 VAC Output Voltage Veriﬁcation

MUST BE USED

AT ALL TIMES

1Ø-120 VAC Output Voltage Veriﬁcation

1. Place main circuit breaker (Figure 20) in the ON

Figure 19. Voltage Regulator Knob

position.

Figure 20. Main Circuit Breaker (ON)

PAGE 28 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

1. Measure the voltage at the output terminals. The

reading across terminals U and V (Figure 22) should be 240 VAC.

RED

WHITE

BLACK

240 VAC

OFF

240

120

300 mV

COM

Figure 22. Output Terminal Voltage Veriﬁcation

(240 VAC)

GREEN

GROUND CONNECTION

MUST BE USED

AT ALL TIMES

OPERATION/SHUTDOWN

2. Once the correct voltage (240 VAC) has been verﬁed,

place the main circuit breaker (Figure 23) on the OFF position.

Figure 23. Main Circuit Breaker (OFF)

3. Loads (power tools, lighting, etc.) can now be

connected to the generator output terminals.

Stopping the Engine (Normal Shutdown)

1. Place main circuit breaker (Figure 24) in the OFF

position.

Emergency Shutdown

1. Place starter switch key (Figure 25) in STOP position.

Remove key.

2. Place the external fuel valve lever in the OFF position.

Generator Storage

For storage of the generator for more than 30 days, the following is required:

 Run the engine until all the fuel is completely consumed.

 Completely drain the oil from the crankcase and reﬁll

with fresh oil.

 Disconnect the negative battery cable from the battery.

 Clean all external parts of the generator with a cloth.

 If generator is mounted on a trailer, jack trailer up and

place on blocks so tires do not touch the ground or block and completely remove the tires.

 Cover the generator and store in a clean, dry place.

Figure 24. Main Circuit Breaker (OFF)

2. Let engine run at idle with no load for 3–5 minutes.

3. Place the starter switch key (Figure 25) in the STOP

position and remove the key.

Figure 25. Starter Switch (Stop Position)

4. Place the external fuel valve in the OFF position.

5. Remove all load connections from the generator.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 29

MAINTENANCE

Use Table 9 as a general maintenance guideline when servicing your engine. For more detailed engine maintenance information, refer to the engine owner’s manual supplied with your engine.

Table 9. Engine Maintenance Schedule

First

Every 3

Description (3) Operation Daily

Month

50 Hours

Engine Oil

Oil Filter

Cartridge

Air Cleaner

Element

All Nuts & Bolts

Cooling Fins Check X

Fuel Tank Clean X

Fuel Filter Clean X X X

Fuel Filter

Element

Fuel Lines Change Every 2 years, replace if necessary (2)

Battery Change X

Radiator Hoses/

Clamps

Radiator

Coolant

Idle Speed Check-Adjust X (2)

Valve Clearance Check-Adjust X (2)

Fan Belt Check tightness

Water Separator Drain

(1) Service more frequently when used in DUSTY areas.

(2) These items should be serviced by your service dealer, unless you have the proper tools and are mechanically proﬁcient. Refer to the Kubota Shop Manual for service procedures.

(3) For commercial use, log hours of operation to determine proper maintenance intervals.

(4) When using engine oil of CF, CG-4, CH-4, CI-4 in API classiﬁcation.

(5) When this machine is used as the power supply exclusively for the ground heater using the engine oil of CK-4 according to API classiﬁcation.

Check X

Change X X(4) X(5)

Check X X

Change X (1) X

Retighten if

necessary

Change X X

Change Every 2 years, replace if necessary (2)

Change X

Months

25 Hours

Every 6 Months

50 Hours

Every

Year or

100

Hours

Every 2

Years or

200

Hours

Every 8

Years or

800

Hours

Every

Year or

750

Hours

NOTICE

Thoroughly remove dirt and oil from the engine and control area. Clean or replace the air cleaner elements as necessary. Check and retighten all fasteners as necessary.

PAGE 30 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

MAINTENANCE

AIR CLEANER

This is a dry type filter. NEVER apply oil to it. If generator is used in severe dusty areas service air cleaner element more frequently.

NOTICE

If the engine is operating in very dusty or dry grass conditions, a clogged air cleaner will result. This can lead to a loss of power, excessive carbon buildup in the combustion chamber and high fuel consumption. Change air cleaner more frequently if these conditions exist.

Every 50 hours: Remove air ﬁlter element (Figure 26) and clean the heavy-duty paper element with light spray of compressed air. Replace the air cleaner as needed.

This Kubota diesel engine is equipped with a replaceable, high-density paper air ﬁlter element.

Primary Air Cleaner Elements

CAUTION

Wear protective equipment such as approved safety glasses or face shields and dust masks or respirators when cleaning air ﬁlters with compressed air.

1. Release the latches (Figure 26) that secure the cover

to the air ﬁlter body.

2. Remove the air ﬁlter cover and set aside.

3. Remove the air ﬁlter element.

4. Check the air ﬁlter daily or before starting the engine.

6. To clean the air ﬁlter element (paper air ﬁlter) as referenced in Figure 26, tap the filter element several times on a hard surface to remove dirt, or blow compressed air, not to exceed 30 psi (207 kPa,

2.1 kgf/cm2), through the ﬁlter element from the inside out.

BODY

AIR FILTER

ELEMENT

LATCH

BLOW COMPRESSED

AIR FROM THE

INSIDE OUT

EVACUATOR

VALV E

Figure 26. Air Filter

7. Replace air ﬁlter element if it is damaged or excessively dirty.

8. Clean the inside of the air ﬁlter body.

9. Reinstall the air ﬁlter element back into air ﬁlter body.

10. Reinstall the air ﬁlter cover, and secure with latches.

NOTICE

DO NOT run the engine with the air ﬁlter removed or without an element.

5. Check for and correct heavy buildup of dirt and debris along with loose or damaged components.

NOTICE

Operating the engine with loose or damaged air ﬁlter components could allow unﬁltered air into the engine causing premature wear and failure.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 31

ENGINE OIL

Every 100 hours: Change engine oil after the ﬁrst 50 hours

of operation and every 100/750 hours thereafter. Always check the crankcase oil level prior to each use, or when the fuel tank is ﬁlled. Insufﬁcient oil may cause severe engine damage. Make sure generator is level when checking oil level. The oil level must be between the two notches on the dipstick as shown in Figure 9.

1. Remove engine oil drain plug located at the bottom of the generator enclosure (Figure 27) and drain oil from crankcase.For best results drain oil while engine is warm. Reinstall oil drain plug, and add engine oil as speciﬁed in Table 6. Crankcase oil capacity is 5.39 quarts (5.1 liters).

OIL FILTER

WRENCH

MAINTENANCE

RUBBER

SEAL

ENGINE

OIL FILTER

CARTRIDGE

Figure 28. Oil Filter Cartridge

LAYER OF OIL

OIL

COAT SEAL

WITH THIN

OIL DRAIN BOLT

AND O-RING

Figure 27. Engine Oil Drain Plug

Oil Filter Cartridge

Every 200/750 hours: Replace the engine oil ﬁlter cartridge

after every 200/750 hours of operation.

1. Clean the area around the lubricating oil ﬁlter head.

2. Coat oil ﬁlter seal (Figure 28) with clean engine oil.

3. Install new oil ﬁlter ﬁrst by hand until it makes contact with the ﬁlter head surface. Tighten it another 3/4 turn using a ﬁlter wrench.

4. Install drain bolt with sealing washer and tighten.

NOTICE

When installing the oil ﬁlter, coat rubber seal with a small amount of lubricant (motor oil). DO NOT overtighten cartridge. Hand tighten only.

5. Replace engine oil with recommended type oil as listed in Table 6. For engine oil capacity, see Table 2 (engine speciﬁcations). Fill to upper limit as shown in Figure 9.

6. Run the engine for several minutes. Watch for oil leakage. Shut the engine down and allow it to sit for several minutes. Top off the oil to the upper limit on the dipstick.

PAGE 32 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

MAINTENANCE

CLEANING THE FUEL FILTER

Every 100 hours: Clean fuel ﬁlter every 100 hours of

operation or once a month to remove dust or water.

1. Place fuel cock lever (Figure 29) in the OFF (close)

position.

2. Disconnect fuel lines from fuel ﬁlter.

Figure 29. Fuel Cock Lever (OFF)

3. Unscrew the ﬁlter bowl (Figure 30) from the fuel ﬁlter head.

4. Wipe the inside of the fuel ﬁlter bowl with a clean cloth to remove any foreign matter or debris that may have accumulated. Rinse with diesel fuel.

5. Remove fuel ﬁlter paper element, and rinse with diesel fuel.

6. Reinstall ﬁlter bowl and paper element back onto the ﬁlter head. Hand tighten retaining ring.

7. Inspect all fuel lines every 50 hours.

REPLACING FUEL FILTER ELEMENT

First 50 and then every 200 hours: Replace fuel ﬁlter

element.

1. Unscrew the filter bowl from the fuel filter head (Figure 30).

2. Remove fuel ﬁlter paper element and replace with a new one.

3. Replace O-ring and coat with a small amount of clean 15W-40 engine oil.

4. Insert the new fuel ﬁlter element into the ﬁlter bowl.

5. Reinstall ﬁlter bowl ﬁrst by hand until it makes contact with the fuel ﬁlter head surface. Hand tighten only.

Figure 30. Fuel Filter Disassembly

6. Remove the air from the fuel system. Reference the Kubota Operation and Maintenance Manual, “Bleeding the Fuel System.”

AUTOMATIC AIR BLEEDING DEVICE

When the engine stops due to running out of fuel, take off the fuel ﬁlter or fuel piping and restart the machine in accordance with the following instructions:

1. Reﬁll the fuel tank and place the fuel cock lever in the OPEN position.

2. Place the starter switch key in the START position. When the engine starter engages, the automatic air vent device will expel the air inside the fuel system.

3. After 10 to 20 seconds of turning the engine over, the automatic air vent device would have expelled all the air out of the fuel system. At this point, the engine will be able to start.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 33

MAINTENANCE

NOTICE

If air enters the fuel injection system of a diesel engine, starting becomes impossible. After running out of fuel, or after disassembling the fuel system, bleed the system. Reference the Kubota Operation and

Maintenance Manual for details.

STOPPING ENGINE (STARTER SWITCH FAILURE)

In the event the engine continues to run even after the starter switch has been placed in the STOP position, perform the following procedure to turn off the engine.

1. Place fuel cock lever (Figure 29) in the CLOSED

position.

2. Place engine stop lever (Figure 31) in the STOP

position. Continue pushing stop lever until the engine has completely stopped.

1. Remove the radiator pressure cap (Figure 32) only if the coolant temperature is below 120°F (50°C).

CORRECT

180

140

220

°F

100

PRESSURE

CAP

260

WATER TEMP

Figure 32. Radiator Pressure Cap Removal

140

100

WATER TEMP

180

220

°F

260

2. Remove the coolant drain bolt and O-ring (Figure 33), then allow the coolant to drain into a suitable container.

PUSH

STOP

POSITION

Figure 31. Engine Stop Lever

DRAINING ENGINE COOLANT

WARNING

DO NOT remove the pressure cap from the radiator

when the engine is hot! Wait until the coolant temperature is below 120°F (50°C) before removing pressure cap.

Heated coolant spray or steam can cause severe scalding and personal injury.

COOLANT

DRAIN BOLT

AND O-RING

Figure 33. Coolant Drain Bolt

3. Flush the radiator by running clean tap water through radiator unit until signs of rust and dirt are removed. DO NOT clean radiator core with any object, such as a screwdriver.

4. Check hoses for wear and kinks. Check clamps for signs of leakage and replace as needed.

5. Tighten the drain plug and reinstall the overﬂow tank.

6. Fill with coolant as recommended by the engine manufacturer.

PAGE 34 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

V-BELT

Visually examine the V-belt (Figure 34) and determine if it is full of tiny cracks, frayed, has pieces of rubber missing, is peeling or otherwise damaged.

Also, examine the belt and determine if it is oil soaked or “glazed” (a hard shiny appearance on the sides of the belt). Either of these two conditions can cause the belt to run hot, which can weaken it and increase the danger of it breaking.

If the V-belt exhibits any of the above wear conditions replace the V-belt immediately.

OIL SOAKED

MAINTENANCE

GLAZED

CRACKS

SIDEWALL

WEAR

CORD FAILURE

WORN BACK

BROKEN

MISSING RUBBER

Figure 34. V-Belt Inspection

COVER

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 35

TROUBLESHOOTING (GENERATOR)

Table 10. Generator Troubleshooting

Symptom Possible Problem Solution

AC Voltmeter defective? Check output voltage using a voltmeter.

Is wiring connection loose? Check wiring and repair.

No Voltage Output

Low Voltage Output

High Voltage Output

Circuit Breaker Tripped

Is AVR defective? Replace if necessary.

Defective Rotating Rectiﬁer? Check and replace.

Defective Exciter Field? Contact MQ Technical Support

Is engine speed correct? Adjust to 1,800 rpm

Is wiring connection loose? Check wiring and repair.

Defective AVR? Replace if necessary.

Is wiring connection loose? Check wiring and repair.

Defective AVR? Replace if necessary.

Short Circuit in load? Check load and repair.

Over current? Conﬁrm load requirement and reduce.

Defective circuit breaker? Check and replace.

Overcurrent Relay actuated? Conﬁrm load requirement and replace.

PAGE 36 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

TROUBLESHOOTING (ENGINE/GENERATOR)

Table 11. Engine/Generator Troubleshooting

SYMPTOM POSSIBLE PROBLEM SOLUTION

Dead battery? Replace battery.

Engine fails to start and starter does not rotate.

Engine fails to start and starter rotates.

Engine starts, Idle Control Switch is in OFF position and engine remains at low speed.

Engine starts and Idle Control Switch is in OFF position. Engine speed rises and battery discharges too soon.

Defective starter switch? Replace starter switch.

Defective starter? Replace starter.

Fuse F5 burned out? Replace fuse.

Broken pre-heat circuit? Check pre-heat circuit.

No fuel? Add fuel.

Defective wiring? Check wiring.

Defective idle control switch? Replace switch.

Clogged fuel strainer? Clean or replace.

Clogged air cleaner? Clean or replace.

Defective idle control device? Replace.

Disconnected wiring? Check and repair wiring.

Defective engine regulator? Replace regulator.

Defective wiring? Repair or replace wiring.

Engine starts and Idle Control Switch is in OFF position. Engine speed rises and engine seems overloaded.

Engine starts and Idle Control Switch is in OFF position. Engine speed rises and engine makes abnormal noise.

Engine starts and Idle Control Switch is in OFF position. Engine speed rises and remains at high speed when Idle Control Switch is placed in the ON position.

Defective alternator? Repair or replace alternator.

Damaged alternator bearing? Replace alternator bearings.

Loose engine parts? Check all engine parts for tightness.

Defective alternator?

Defective idle control device? Repair or replace idle control device.

Defective idle control switch? Replace idle control switch.

Defective solenoid? Replace solenoid.

Defective relay? Replace relay.

Check alternator for damaged bearing or loose clamping bolts.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 37

TROUBLESHOOTING (ENGINE)

Table 12. Engine Troubleshooting

SYMPTOM POSSIBLE PROBLEM SOLUTION

No fuel? Replenish fuel.

Air in the fuel system? Bleed system.

Water in the fuel system? Remove water from fuel tank.

Fuel pipe clogged? Clean fuel pipe.

Fuel ﬁlter clogged? Clean or change fuel ﬁlter.

Engine does not start.

Starter does not run.

Excessively high viscosity of fuel or engine oil at low temperature?

Fuel with low cetane number? Use the speciﬁed fuel.

Fuel leak due to loose injection pipe retaining nut?

Incorrect injection timing? Adjust.

Fuel cam shaft worn? Replace.

Injection nozzle clogged? Clean injection nozzle.

Injection pump malfunctioning? Repair or replace.

Seizure of crankshaft, camshaft, piston, cylinder liner or bearing?

Compression leak from cylinder?

Improper valve timing? Correct or replace timing gear.

Piston ring and liner worn? Replace.

Excessive valve clearance? Adjust.

Battery discharged? Charge battery.

Starter malfunctioning? Repair or replace.

Key switch malfunctioning? Repair or replace.

Use the speciﬁed fuel or engine oil.

Tighten nut.

Repair or replace.

Replace head gasket, tighten cylinder head bolt, glow plug and nozzle holder.

Wiring disconnected? Connect wiring.

PAGE 38 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

TROUBLESHOOTING (ENGINE)

Table 13. Engine Troubleshooting (Continued)

SYMPTOM POSSIBLE PROBLEM SOLUTION

Fuel ﬁlter clogged or dirty? Clean or change.

Air cleaner clogged? Clean or change.

Fuel leak due to loose injection pipe retaining nut? Tighten nut.

Engine revolution is not smooth.

Either white or blue exhaust gas is observed.

Either black or dark gray exhaust gas is observed.

Injection pump malfunctioning? Repair or replace.

Incorrect nozzle opening pressure? Adjust.

Injection nozzle stuck or clogged? Repair or replace.

Fuel overﬂow pipe clogged? Clean.

Governor malfunctioning? Repair.

Excessive engine oil? Reduce to the speciﬁed level.

Piston ring and liner worn or stuck? Repair or replace.

Incorrect injection timing? Adjust.

Deﬁcient compression? Adjust top clearance.

Overload? Lessen the load.

Low-grade fuel used? Use the speciﬁed fuel.

Fuel ﬁlter clogged? Clean or change.

Air cleaner clogged? Clean or change.

Deﬁcient nozzle injection? Repair or replace the nozzle.

Incorrect injection timing? Adjust.

Engine’s moving parts seem to be seizing? Repair or replace.

Deﬁcient output.

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 39

Uneven fuel injection? Repair or replace the injection pump.

Deﬁcient nozzle injection? Repair or replace the nozzle.

Compression leak?

Replace head gasket, tighten cylinder head bolt, glow plug and nozzle holder.

GENERATOR WIRING DIAGRAM

Note

No designation lead size : 1.25

WIRING COLOR CODE

SYMBOL

COLOR SYMBOL COLOR

BLACK

BLUE

BROWN

GREEN

GRAY

VIOLET

PINK

R W

Y LB LG

C J

CN 1

RED WHITE YELLOW LIGHT BLUE LIGHT GREEN ORANGE

CN 2

TB1

TB2

2 1

CN 3

CONNECTOR View at Wiring Side

U N

J K

Terminal Board

SYMBOL

19 30

O CN 4

C D W GR

Ex Ar Ex Fg

U.N.V

VR Re

TB1

TB1 TB2

DESIGNATION

ARMATURE WINDING FIELD WINDING EXCITATION ARMATURE WINDING

EXCITATION FIELD WINDING SINGLE-PHASE OUTPUT TERMINALS GROUND TERMINAL CIRCUIT BREAKER 25A AC.VOLTMETER VOLTAGE REGULATOR RECTIFIER RESISTOR TERMINAL BOARD TERMINAL BOARD AUTOMATIC VOLTAGE REGULATOR

PAGE 40 — DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21)

ENGINE WIRING DIAGRAM

Connector (view from inserting wire side)

STARTER SWITCH

WIRING COLOR CODE

COLOR SYMBOL COLOR

SYMBOL

BLACK

BLUE

BROWN

GREEN

GRAY

VIOLET

PINK

R W

Y LB LG

RED WHITE YELLOW LIGHT BLUE LIGHT GREEN ORANGE

TB2

CONNECTIONS

J K

TERMINAL BOARD

DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 41

19 30

HERE’S HOW TO GET HELP

UNITED STATES

Multiquip Inc

are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other

trademarks are the property of their respective owners and used with permission.

This manual

The information and speciﬁ cations included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change speciﬁ cations, design or the information published in this publication at any time without notice and without incurring any obligations.

DENYO MANUFACTURING CO.

Multiquip Inc.

(310) 537- 3700 6141 Katella Avenue Suite 200 Cypress, CA 90630 E-MAIL: mq@multiquip.com WEBSITE: www.multiquip.com

OPERATION MANUAL

PLEASE HAVE THE MODEL AND SERIAL

NUMBER ON-HAND WHEN CALLING

CANADA

Multiquip Multiquip (UK) Limited Head Ofﬁ ce

(450) 625-2244 4110 Industriel Boul. Laval, Quebec, Canada H7L 6V3 E-MAIL : infocanada@multiquip.com

, the MQ logo and the MQ Power logo

UNITED KINGDOM

0161 339 2223 Unit 2, Northpoint Industrial Estate, Globe Lane, Dukinﬁ eld, Cheshire SK16 4UJ E-MAIL : sales@multiquip.co.uk

MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.

Manufactured for

MQ Power Inc.

MQ Power DCA6SPX4F Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual