Generac MMG480 Operating instructions

Brand: Generac

Model: MMG480

Category: Power generators

Type: Operating instructions

This manual is also suitable for

OPERATING MANUAL

Parts manuals available online at www.generacmobile.com

33797 C 07/16

DIESEL GENERATOR

MMG330DI4 • MMG480DI4

WARNING

CALIFORNIA PROPOSITION 65 WARNING: Diesel engine exhaust and some of its

constituents are known to the state of California to cause cancer, birth defects, and

other reproductive harm. (000004)

WARNING

CALIFORNIA PROPOSITION 65 WARNING: This product contains or emits chemicals

known to the state of California to cause cancer, birth defects, and other reproductive

harm. (000005)

WARNING

ENVIRONMENTAL HAZARD: Always recycle batteries at an official recycling center in

accordance with all local laws and regulations. Failure to do so could result in

environmental damage, death or serious injury. (000228)

iii

Introduction

This manual provides information and procedures to safely operate and maintain the Generac Mobile Products unit.

For your own safety and protection from physical injury, carefully read, understand, and observe the safety instructions

described in this manual. Keep a copy of this manual with the unit at all times. Additional copies are available from

Generac Mobile Products, or can be found at www.generacmobile.com.The information contained in this manual

was based on machines in production at the time of publication. Generac Mobile Products reserves the right to

change any portion of this information without notice.

Read all of the manuals included with the unit. Each manual details specific information regarding items such as

setup, use and service requirements. An engine operator’s manual provides detailed operation and maintenance

procedures for the engine. Additional copies of the engine operator’s manual are available from the engine

manufacturer.

DO NOT MODIFY or use this equipment for any application other than for which it was designed.

Only a trained and licensed electrician should perform wiring and connections to unit. Wiring must be in compliance

with National Electrical Code (NEC), state and local regulations, as well as Occupational Safety and Health

Administration (OSHA) guidelines.

GENERAC MOBILE PRODUCTS LLC

215 Power Drive • Berlin, WI 54923

U.S.A.

Phone: 920-361-4442

FAX: 920-361-4416

Toll Free: 1-800-926-9768

www.generacmobile.com

For technical or parts QUESTIONS, please contact the Generac Mobile Products Technical Service

team at 1-800-926-9768. Please have your serial number available.

To ORDER SERVICE PARTS, please contact the dealer from which you purchased the unit, or call

Generac Mobile Products to locate a dealer in your area.

Engine Make:__________________________________________

Engine Serial Number:___________________________________

Engine Model Number: __________________________________

Generator Make: _______________________________________

Generator Model Number: ________________________________

Generator Serial Number: ________________________________

Unit Model Number:_____________________________________

Unit Serial Number: _____________________________________

This Page Intentionally Left Blank

Table of Contents

Section 1 - Safety

Safety Notes ....................................................................................................................................... 1

Operating Safety................................................................................................................................. 1

Engine Safety ..................................................................................................................................... 2

Service Safety .................................................................................................................................... 2

Towing Safety..................................................................................................................................... 2

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

Safety Symbol Summary .................................................................................................................... 4

Section 2 - General Information

Specifications ..................................................................................................................................... 5

Unit Dimensions .................................................................................................................... 7

Unit Serial Number Locations............................................................................................................. 8

Component Locations (MMG330 Shown) .......................................................................................... 9

Control Panel - MMG330DI4 ............................................................................................................ 10

Control Panel - MMG480DI4 ............................................................................................................ 11

Power Zone™ Controller .................................................................................................................. 12

Controller Features and Functions ................................................................................................... 12

Operator Screens ................................................................................................................12

Alarm Mute .......................................................................................................................... 12

Auto/Manual Mode .............................................................................................................. 12

Navigation Buttons ..............................................................................................................13

Control Power Switch .......................................................................................................... 13

Engine Start......................................................................................................................... 13

Engine Stop/Reset...............................................................................................................13

Operator Screens ............................................................................................................................. 13

Home Screen....................................................................................................................... 13

Engine Screen ..................................................................................................................... 14

Generator Screen ................................................................................................................14

Voltage Adjust Screen ......................................................................................................... 15

Maintenance Screens....................................................................................................................... 15

Generator Summary ............................................................................................................ 16

Engine Tab .......................................................................................................................... 16

Generator Tab ..................................................................................................................... 16

Alarms Tab .......................................................................................................................... 17

Input/Output Tab.................................................................................................................. 18

Status Tab ........................................................................................................................... 19

Generator Monitoring........................................................................................................................ 19

Generator Screen ................................................................................................................19

Generator Tab - Maintenance Screens ............................................................................... 20

Engine Monitoring............................................................................................................................. 20

Engine Operator Screen...................................................................................................... 20

Engine Tab - maintenance Screens .................................................................................... 20

Diesel Exhaust Filter Monitoring....................................................................................................... 21

Power Zone™ Controller Information Displays, Functions, And Reset ............................................ 22

Belt Tension...................................................................................................................................... 22

Changing Output Voltage ................................................................................................................ 22

Control Panel Receptacles ............................................................................................................... 24

Derating for Altitude.......................................................................................................................... 24

Remote Start Terminal Block............................................................................................................ 24

Section 3 - Operation

Pre-Start Checklist............................................................................................................................ 25

Manual Starting of the Generator ..................................................................................................... 25

Automatically Starting The Generator .............................................................................................. 26

Accessing the Configuration Menu...................................................................................... 27

“Auto” (Remote) Starting of the Generator .......................................................................................27

Generator Output Connection Lugs.................................................................................................. 27

Fine Voltage Adjustment .................................................................................................................. 28

Voltage Regulation ........................................................................................................................... 29

Main Circuit Breaker ......................................................................................................................... 29

Exhaust Filter Cleaning Operations.................................................................................................. 30

Transfer Switch................................................................................................................................. 30

Auto Exercise Timer ......................................................................................................................... 31

Schedule Tab ...................................................................................................................... 32

Set the Controller Clock....................................................................................................... 32

Set the Schedule ................................................................................................................. 32

Set the Unit to Auto Mode ................................................................................................... 33

Shutting Down the Generator ........................................................................................................... 33

Emergency Stop Switch ................................................................................................................... 34

Disable Automatic (Auto) Exhaust Filter Cleaning............................................................... 34

Force a Manual Exhaust Filter Cleaning ............................................................................. 34

Enable Exhaust Filter Cleaning ........................................................................................... 34

Power Zone™ Controller Information Displays, Functions, And Reset ............................................ 35

Towing The Trailer............................................................................................................................ 35

Lifting The Generator........................................................................................................................ 35

Section 4 - Maintenance

Emissions Information ...................................................................................................................... 37

Daily Walk Around Inspection........................................................................................................... 37

Engine And Generator Maintenance ................................................................................................37

Engine Break-In Requirements ........................................................................................................ 39

Resetting The Maintenance Alarms ................................................................................................. 39

Exhaust Filter Service Requirements ............................................................................................... 40

Checking Generator Drive Plate Torque .......................................................................................... 40

Jack Maintenance............................................................................................................................. 40

Side-wind models ................................................................................................................40

Top-wind models .................................................................................................................41

Trailer Wheel Bearings ..................................................................................................................... 41

Section 5 - Troubleshooting

Section 6 - Wiring Diagrams

AC Wiring - MMG330DI4.................................................................................................................. 45

AC Wiring - MMG480DI4.................................................................................................................. 46

AC Wiring - 4 Position Voltage Selector Switch Option (MMG330DI4 only) .................................... 47

AC Wiring Diagrams for Optional Equipment ................................................................................... 48

DC Wiring Diagram........................................................................................................................... 49

DC Wiring Diagrams for Optional Equipment ................................................................................... 50

Wiring Block Diagram - Dedicated 12 Lead Generators Option ....................................................... 51

Trailer Wiring Diagram...................................................................................................................... 52

Wiring Harness - Electric Brake Option ............................................................................................ 53

Section 7 - Options & Accessories

Generator Cam Lock Connections Option........................................................................................ 55

Auxiliary Fuel Tank Option ............................................................................................................... 56

Fuel Transfer Pump Option .............................................................................................................. 57

Viscous Fan Clutch Option ............................................................................................................... 57

33797 C MMG330DI4-480DI4 Operating Manual 1

Section 1 - Safety

SAFETY NOTES

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety

messages that follow this symbol to avoid possible injury or death.

This manual contains DANGERS, WARNINGS, CAUTIONS, NOTICES and NOTES which must be

followed to prevent the possibility of improper service, damage to the equipment, personal injury or death.

The following formatting options will apply when calling the readers attention to the DANGERS, WARN-

INGS, CAUTIONS, NOTICES and NOTES.

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.

CAUTION

Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

Indicates a hazardous situation which, if not avoided, could result in property or equipment

damage.

Note: Notes contain additional information important to a procedure and will be found within the regular text body

of this manual.

OPERATING SAFETY

Before using the unit, be sure you read and understand all of the instructions. This equipment was

designed for specific applications; DO NOT modify or use this equipment for any application other than

which it was designed for. Equipment operated improperly or by untrained personnel can be dangerous.

Read the operating instructions and familiarize yourself with the location and proper use of all instruments

and controls. Inexperienced operators should receive instruction from someone familiar with the equipment

before being allowed to operate or set up the unit. The following points should be practiced at all times:

• The area immediately surrounding the unit should be dry, clean, and free of debris.

• Position and operate the unit on a firm, level surface.

• DO NOT start a unit in need of repair.

• If the unit is equipped with a frame grounding stud, follow any local, state, and National Electrical

Code (NEC) guidelines when connecting.

• DO NOT operate the unit on a combustible surface.

• DO NOT operate a unit while tired, distracted, or under the influence of drugs or alcohol.

• Keep all body parts, clothing and other loose items away from moving parts.

Safety

2 MMG330DI4-480DI4 Operating Manual 33797 C

ENGINE SAFETY

Internal combustion engines present special hazards during operation and fueling. Failure to follow the

safety guidelines described below could result in severe injury or death. Read and follow all safety warnings

described in the engine operator's manual. A copy of this manual was supplied with the unit when it was

shipped from the factory.

• DO NOT run engine indoors or in an area with poor ventilation. Engine exhaust contains carbon

monoxide, a deadly, odorless and colorless gas which, if inhaled, can cause nausea, fainting or death.

Make sure engine exhaust cannot seep into closed rooms or ventilation equipment.

• DO NOT touch or lean against hot exhaust pipes or engine components.

• DO NOT clean air filter with gasoline or other types of low flash point solvents.

• DO NOT operate the unit without a functional exhaust system.

• Prolonged exposure to sound levels in excess of 85 dB(A) can cause permanent hearing loss. Wear

hearing protection when working around a running engine.

• Batteries contain sulfuric acid which can cause severe injury or death. Sulfuric acid can cause eye

damage, burn flesh or eat holes in clothing. Protective eye wear and clothing are necessary when

working on or around the battery. Always disconnect the negative (-) battery cable from the

corresponding terminal before performing any service on the engine or other components.

SERVICE SAFETY

All service work must be performed by qualified personnel who are familiar with the equipment. Only a

qualified electrician should troubleshoot or repair electrical problems occurring in this equipment. Fol-

low the safety guidelines described below to prevent hazardous situations which could result in severe

injury or death.

• DO NOT wash the unit with high pressure hoses, power washers, or steam cleaners. Water may

collect in the unit, causing damage to electrical parts.

• ALWAYS use extreme caution when servicing this unit in damp conditions. Do not service the unit if

your skin or clothing is wet. Do not allow water to collect around the base of the unit.

• Replace all missing and hard to read decals. Decals provide important operating instructions and

warn of dangers and hazards.

TOWING SAFETY

Towing a trailer requires care. Both the trailer and vehicle must be in good condition and securely fastened

to each other to reduce the possibility of an accident. Some states require that large trailers be registered

and licensed. Contact your local Department of Transportation office to check on license requirements for

your particular unit.

• Verify the hitch and coupling on the towing vehicle are rated equal to, or greater than, the trailer's

Gross Vehicle Weight Rating (GVWR).

• Check trailer tires for wear and proper inflation.

• DO NOT tow trailer using defective parts. Inspect the hitch and coupling for wear or damage.

• Verify the trailer hitch and the coupling are compatible. Make sure the coupling is securely fastened

to the vehicle.

• Verify directional and brake lights on the trailer are connected and working properly.

• Verify wheel lug nuts are present and tightened to the specified torque.

• Maximum recommended speed for highway towing is 45 mph (72 km/h). Recommended off-road

towing speed is 10 mph (16 km/h) or less, depending on terrain.

Safety

33797 C MMG330DI4-480DI4 Operating Manual 3

• When towing, maintain extra space between vehicles and avoid soft shoulders, curbs and sudden

lane changes. Practice turning, stopping and backing up in an area away from heavy traffic prior to

transporting the unit.

• Wipe the coupler clean and apply fresh grease each time the trailer is towed to eliminate squeaking.

REPORTING TRAILER SAFETY DEFECTS

If you believe your trailer has a defect which 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 Generac Mobile Products

LLC.

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 an individual

problem between you, your dealer, or Generac Mobile Products LLC.

To contact NHTSA, you may either call the Auto Safety Hotline toll-free at 1-888-327-4236 (TTY:1-800-424-9153),

go to http://www.safercar.gov; or write to:

Administrator

NHTSA

1200 New Jersey Avenue S.E.

Washington, DC 20590

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

Safety

4 MMG330DI4-480DI4 Operating Manual 33797 C

SAFETY SYMBOL SUMMARY

The safety and operating decals affixed to the unit provide important instructions and warn of dangers and hazards.

Replace any missing or hard-to-read decals and use care when washing or cleaning the unit. Decal placement and

part numbers can be found in the online parts manual at www.generacmobile.com. Below is a summary of the

intended meanings for the symbols used on the decals.

Figure 1-1. Decal Safety Symbol Summary

01879

STOP

Hot surface(s) nearby.

Unit electrical ground.

Anchor/tie down point.

Stop engine.

Dangerous voltage may

be present.

Asphyxiation hazard;

operate in well ventilat-

ed area.

Fan hazard; keep body

parts clear of this area.

Belt/entanglement

hazard; keep body parts

clear of this area.

Safety alert symbol;

used to alert you

to potential hazards.

Read and understand

the operator’s manual

before operating.

Disconnect battery

before servicing.

Check diesel fuel fill

level.

Do not remove guard.

Burn/scald hazard;

pressurized steam.

Fire/explosion hazard;

keep open flames

away from unit.

Isolate generator to

prevent electrocution

hazard.

Battery is

disconnected.

Never change switch

position while engine is

running.

Lift here only.

Automatic Start.

208

120

480

277

240

120

Never change phase

switch position while

engine is running.

Engine running.

Force Exhaust

Regeneration.

33797 C MMG330DI4-480DI4 Operating Manual 5

Section 2 - General Information

SPECIFICATIONS

GENERAC MODEL MMG330DI4 MMG330DI4 Super Start

Engine

Make/Brand...................................................................... John Deere .................................. John Deere

Model ............................................................................... PE609HFG95............................... PE609HFG95

Horsepower - prime hp (kW) .......................................... 396 (295)...................................... 396 (295)

Horsepower - standby hp (kW) ....................................... 440 (328)...................................... 440 (328)

Operating Speed rpm ..................................................... 1800 ............................................. 1800

Displacement in

(L) ....................................................... 549 (9.0)....................................... 549 (9.0)

Cylinders - qty .................................................................. 6 ................................................... 6

Fuel Consumption - 100% prime gph (Lph) ...................18.7 (70.8).................................... 18.7 (70.8)

Battery Type ..................................................................... Group 31 ...................................... Group 31

Battery Voltage (Quantity per Unit) .................................. 12V (2) ......................................... 12V (2)

Battery Rating .................................................................. 1000 CCA..................................... 1000 CCA

Generator

Make/Brand...................................................................... Marathon Electric ......................... Marathon Electric

Model ............................................................................... 432PSL6210 ................................ 433PSL6220

Type, Insulation ................................................................Brushless, H................................. Brushless, H

Generator Set (Engine/Generator)

3Ø - Standby kW (kVA) .................................................. 290 (363)...................................... 294 (367)

Amps - 3Ø Standby 480V (208V) A ................................ 437 (1008).................................... 441 (1019)

3Ø - Prime kW (kVA) ......................................................263 (329)...................................... 263 (329)

Amps - 3Ø Prime 480V (208V) A .................................... 396 (913)...................................... 396 (913)

1Ø - Standby kW (kVA) .................................................. N/A ............................................... N/A

Amps - 1Ø Standby - 240V A ......................................... N/A ............................................... N/A

1Ø - Prime kW (kVA) ...................................................... N/A ............................................... N/A

Amps - 1Ø Prime - 240V A ............................................. N/A ............................................... N/A

Frequency Hz .................................................................. 60 ................................................. 60

Power Factor.................................................................... 0.8 (3Ø)........................................ 0.8 (3Ø)

Weights

Dry Weight, Skid Mounted lbs (kg) .................................9447 (4285).................................. 10007 (4539)

Operating Weight, Skid Mounted lbs (kg) ...................... 12907 (5854)................................ 13467 (6109)

Dry Weight, Trailer Mounted lbs (kg) ..............................12320 (5588)................................ 12880 (5842)

Operating Weight, Trailer Mounted lbs (kg) ...................15780 (7158)................................ 16340 (7412)

Capacities

Fuel Tank Volume gal (L) ................................................ 459 (1738).................................... 459 (1738)

Usable Fuel Volume gal (L) ............................................ 423 (1601).................................... 423 (1601)

Coolant (incl. engine) qt (L) ............................................ 75.0 (70.9).................................... 75.0 (70.9)

Maximum Run Time hrs ................................................. 23 ................................................. 23

AC Distribution

Circuit Breaker Size ......................................................... 1200 ............................................. 1200

Voltage Selection ............................................................. Link/Reconnect Board.................. Link/Reconnect Board

Voltage Regulation ...........................................................+/- 1%........................................... +/-1%

Voltages Available 1Ø ......................................................N/A ............................................... N/A

Voltages Available 3Ø ...................................................... 208, 480 ....................................... 208, 480

Trailer

Number of Axles...............................................................2 ................................................... 2

Capacity - Axle Rating lbs (kg) ....................................... 8000 (3629).................................. 8000 (3629)

Tire Size in ...................................................................... 17.5 .............................................. 17.5

Brakes.............................................................................. Electric ......................................... Electric

Hitch - Standard ............................................................... 3" Ring .........................................

3" Ring

Maximum Tire Pressure psi ............................................ 125 ............................................... 125

Specifications are subject to change without notice.

General Information

6 MMG330DI4-480DI4 Operating Manual 33797 C

GENERAC MODEL MMG480DI4

Engine

Make/Brand............................................................................................................................ John Deere

Model ..................................................................................................................................... RG6135HFG95

Horsepower - prime hp (kW) ................................................................................................ 571 (426)

Horsepower - standby hp (kW) ............................................................................................. 634 (472)

Operating Speed rpm ........................................................................................................... 1800

Displacement in

(L) ............................................................................................................. 824 (13.5)

Cylinders - qty ........................................................................................................................ 6

Fuel Consumption - 100% prime gph (Lph) ......................................................................... 28.4 (107.6)

Battery Type ........................................................................................................................... Group 31

Battery Voltage (Quantity per Unit) ........................................................................................ 24V (2-12V)

Battery Rating ........................................................................................................................ 1000 CCA

Generator

Make/Brand............................................................................................................................ Marathon Electric

Model ..................................................................................................................................... 433PSL6220

Type, Insulation ...................................................................................................................... Brushless, H

Generator Set (Engine/Generator)

3Ø - Standby kW (kVA) ........................................................................................................ 419 (524)

Amps - 3Ø Standby 480V (208V) A ...................................................................................... 630 (1454)

3Ø - Prime kW (kVA) ............................................................................................................ 379 (474)

Amps - 3Ø Prime 480V (208V) A .......................................................................................... 570 (1316)

1Ø - Standby kW (kVA) ........................................................................................................ N/A

Amps - 1Ø Standby - 240V A ............................................................................................... N/A

1Ø - Prime kW (kVA) ............................................................................................................ N/A

Amps - 1Ø Prime - 240V A ................................................................................................... N/A

Frequency Hz ........................................................................................................................ 60

Power Factor.......................................................................................................................... 0.8 (3Ø)

Weights

Dry Weight, Skid Mounted lbs (kg) ....................................................................................... 12690 (5756)

Operating Weight, Skid Mounted lbs (kg) ............................................................................ 17130 (7770)

Dry Weight, Trailer Mounted lbs (kg) .................................................................................... 15940 (7230)

Operating Weight, Trailer Mounted lbs (kg) ......................................................................... 20380 (9244)

Capacities

Fuel Tank Volume gal (L) ...................................................................................................... 616 (2332)

Usable Fuel Volume gal (L) .................................................................................................. 573 (2169)

Coolant (incl. engine) qt (L) .................................................................................................. 95.5 (90.4)

Maximum Run Time hrs ....................................................................................................... 20

AC Distribution

Circuit Breaker Size ............................................................................................................... 1600

Voltage Selection ................................................................................................................... Link/Reconnect Board

Voltage Regulation ................................................................................................................. +/-1%

Voltages Available 1Ø ............................................................................................................ N/A

Voltages Available 3Ø ............................................................................................................ 208, 480

Trailer

Number of Axles..................................................................................................................... 3

Capacity - Axle Rating lbs (kg) ............................................................................................. 8000 (3629)

Tire Size in ............................................................................................................................ 17.5

Brakes.................................................................................................................................... Electric

Hitch - Standard ..................................................................................................................... 3" Ring

Maximum Tire Pressure psi .................................................................................................. 125

Specifications are subject to change without notice.

General Information

33797 C MMG330DI4-480DI4 Operating Manual 7

Unit Dimensions

Figure 2-1. Unit Dimensions

Specifications are subject to change without notice.

LWH

MGG330

Skid Mounted 171 in (4.35 m) 60 in (1.52 m) 90 in (2.29 m)

Trailer Mounted 230 in (5.84 m) 102 in (2.59 m) 110 in (2.79 m)

MGG480

Skid Mounted 175 in (4.45 m) 60 in (1.52 m) 96 in (2.44 m)

Trailer Mounted 250 in (6.35 m) 102 in (2.59 m) 116 in (2.95 m)

General Information

8 MMG330DI4-480DI4 Operating Manual 33797 C

UNIT SERIAL NUMBER LOCATIONS

See Figure 2-2 to locate the unit ID tag and Vehicle Identification Number (VIN) tag on the unit. Important information,

such as the unit serial number, model number, VIN and tire loading information are found on these tags. Record the

information from these tags so it is available if the tags are lost or damaged. When ordering parts or requesting

assistance, you may be asked to provide this information.

Figure 2-2. Serial Number Locations

Serial Number

Model

KVA

FOR ELECTRICAL

EQUIPMENT ONLY.

POUR MATERIAL

ELECTRIQUE SEULEMENT.

Mfg. Code

Skidded WT (lbs/kg) rpm/freq

1 ph. 1.0PF 3 ph. .8PF 3 ph. 1.0PF

insul. class

RATING

GENERAC MOBILE PRODUCTS LLC

Manufactured by

A wholly owned subsidiary of

Generac Power Systems, Inc.

215 Power Drive • Berlin, WI 54923

1-800-926-9768

UNIT ID Tag

VIN Tag

TIRE AND LOADING INFORMATION

RENSEIGNEMENTS SUR LES

PNEUS ET LE CHARGEMENT

SEE OWNER’S

MANUAL FOR

ADDITIONAL

INFORMATION

VOIR LE

MANUEL DE

L’USAGER

POUR

PLUS DE

RENSEIGNEMENTS

MANUFACTURED BY/FABRIQUE PAR: Products LLC DATE: 00/0000

GVWR/PNBV: 000KG (0000LBS) COLD INF. PRESS./

PRESS. DE

V.I.N./N.I.V.:

00000000000000000

TYPE:

TRAILER

MODEL:

XXX000

GAWR / PNBE TIRE / PNEU RIM / JANTE GONF A FROID - KPA(PSI/LPC) SGL / DUAL

EACH

AXLE

THIS VEHICLE CONFORMS TO ALL APPLICABLE STANDARDS PRESCRIBED UNDER THE U.S. FEDERAL MOTOR VEHICLE SAFETY STANDARDS(FMVSS) AND CANADIAN

MOTOR VEHICLE SAFETY REGULATIONS IN EFFECT ON THE DATE OF MANUFACTURE.

CE VEHICULE EST CONFORME A TOUTES LES NORMES QUI LUI SONT APPLICABLES EN VERTU DU REGLEMENT SUR LA SECURITE DES VEHICULES AUTOMOBILES DU CANADA EN VIGUEUR A LA DATE SA

FABRICATION.

The weight of cargo should never exceed 0000KG (0000LBS)

Le poids du chargement ne doit jamais depasser 0000KG (0000LBS)

Generac Mobile

General Information

33797 C MMG330DI4-480DI4 Operating Manual 9

COMPONENT LOCATIONS (MMG330 SHOWN)

Figure 2-3. Component Locations

1. Engine access 8. Reconnect board access

2. Central lift point 9. Emergency stop

3. Ladder 10. Control panel access

4. Generator Access 11. Engine exhaust

5. Radiator drain port 12. Radiator access panel

6. Oil drain port 13. Engine service access

7. Engine battery 14. Fuel fill

*MMG480 control panel is accessible from the rear side of the unit.

General Information

10 MMG330DI4-480DI4 Operating Manual 33797 C

CONTROL PANEL - MMG330DI4

Figure 2-4. Control Panel Component Locations

1. Document holder 9. 120/240V twist-lock receptacles (3)

2. Power Zone™ controller 10. Connection for engine block heater (optional)

3. 120V GFCI duplex receptacles (2) 11. Door safety switch

4. 50A circuit breakers (3) 12. Output ground connection

5. 20A circuit breakers (2) 13. Connection terminal lugs

6. Remote start terminal block 14. Auxiliary light switches (optional)

7. Optional cam lock connectors (15) 15. Diesel exhaust filter cleaning switch

8. Connection for battery charger (optional) 16. Main circuit breaker for connection lugs

General Information

33797 C MMG330DI4-480DI4 Operating Manual 11

CONTROL PANEL - MMG480DI4

Figure 2-5. Control Panel Component Locations

1. Main circuit breaker for connection lugs 9. Cam lock connectors (20) (optional)

2. Diesel exhaust filter cleaning switch 10. Connection for battery charger (optional)

3. Power Zone™ controller 11. Connection for engine block heater (optional)

4. Auxiliary light switches (optional) 12. Door safety switch

5. 120V gfci duplex receptacles (2) 13. Output ground connection

6. 50A circuit breakers (3) 14. Connection terminal lugs

7. 20A circuit breakers (2) 15. 120/240V twist-lock receptacles (3)

8. Remote start terminal block

General Information

12 MMG330DI4-480DI4 Operating Manual 33797 C

POWER ZONE™ CONTROLLER

The Power Zone™ controller is an auto start controller that monitors the unit and indicates operational status and

fault conditions. The controller can be programmed to automatically start or stop on based time schedule, fault

condition, or load demand.

The controller constantly monitors vital generator and engine functions for a number of pre-programmed alarm and

fault conditions. When a fault condition occurs, the engine can be shut down automatically and the main display will

show the fault that caused the shut down; to resume operation, the fault condition must be resolved.

This controller also records a history of unit performance which may be viewed at any time and will not be lost when

the controller is powered down.

Figure 2-6. Power Zone™ Controller Layout

CONTROLLER FEATURES AND FUNCTIONS

Operator Screens

See Operator Screens for more information.

Alarm Mute

The Alarm Mute button silences the audible alarm. Additional action will be required to fully disable the

active alarm.

Auto/Manual Mode

The Auto/Manual mode button is used to change the startup and shutdown modes of the unit. When

pressed once, the unit enters “Manual Mode” and when pressed and held for five seconds, the unit enters

“Auto Mode”. If in “Auto Mode”, pressing once will return the unit to “Manual Mode”.

1. Navigation buttons 7. Alarm mute

2. Control power switch 8. Voltage adjust

3. Engine start (manual mode) 9. Generator

4. Engine stop/reset 10. Engine

5. Main display 11. Home

6. Auto/manual mode

CONTROL ON

CONTROL OFF

™

STARTING THE GENERATOR

DAS STARTEN DES GENERATORS

COMIENZO DEL GENERADOR

COMMENCEMENT DU GÉNÉRATEUR

1. PRESS CONTROL POWER

SWITCH “ON”

2. PUSH ENGINE START “I”

CONTROL

OFF

STOPPING THE GENERATOR

DAS AUFHÖREN DES GENERATORS

PARADA DEL GENERADOR

ARRÊT DU GÉNÉRATEUR

1. PUSH ENGINE STOP “O”

2. PRESS CONTROL POWER

SWITCH “OFF”

CONTROL

OFF

01780

General Information

33797 C MMG330DI4-480DI4 Operating Manual 13

Navigation Buttons

These buttons are used to navigate and interact with the Power Zone™ controller screens. Pressing any directional

arrow (“▲”, “►”, “▼”, “◄”) while on any of the operator screens will open the maintenance screens, and navigate

the tabs and pages within the maintenance screens. The Enter “” button is used to select menus, confirm alarms,

and confirm altered settings.

Control Power Switch

Use this switch to start up and shut down the Power Zone™ controller. This switch should not be turned off when

the unit is running.

Engine Start

Pressing the Engine Start “I” button while the controller is in “Manual Mode” will start the unit, provided there are no

shutdown errors, and the engine satisfies the start status. If the controller is in “Auto Mode”, the engine start button

has no effect.

Engine Stop/Reset

Pressing the Engine Stop/Reset “O” button will shut down the unit and put the controller into Stop Mode, whether in

“Manual Mode” or “Auto Mode”.

CAUTION

In case of an emergency, always press the “EMERGENCY STOP” switch located on the

side of the unit to stop the engine immediately. The Engine Stop/Reset “O” button may delay

the engine shutdown if stop faults exist.

To prevent damage to the generator and connected equipment, remove all loads from the

generator by opening all circuit breakers (turn to “OFF/O”) before pressing the Engine Stop/

Reset “O” button.

OPERATOR SCREENS

The operator screens display the most relevant and critical information an operator will need to properly configure

and utilize a unit. From these four screens the operator can access engine, generator and power transmission

information necessary to operate the unit under normal conditions.

Home Screen

The Home screen is the default screen of the controller and will display after the controller is powered up and the

unit management software is loaded. It displays a live readout of the kW meter, percent of load used (gauge), selected

phase, volts and amps being produced by the generator, and the fuel level with time until empty. The controller will

automatically return to this screen from any other screen after a period of inactivity.

General Information

14 MMG330DI4-480DI4 Operating Manual 33797 C

Figure 2-7. Home Screen

Engine Screen

The Engine screen displays the oil pressure, coolant temperature and battery voltage on three main gauges. Below

the gauges is an hour gauge displaying the total run time on the engine. This screen also displays maintenance

alarm status with the time remaining (black text) or the time past (red text) of scheduled maintenance tasks.

Figure 2-8. Engine Screen

Generator Screen

The Generator screen displays the average voltage frequency, volts and amps from the generator, as well as line-

to-line voltage, and individual line-to-neutral voltage, amperage and power (kW). This screen also displays the

generator winding configuration set by the voltage selector switch in the lower right corner.

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Generac MMG480 Operating instructions

Brand: Generac

Model: MMG480

Category: Power generators

Type: Operating instructions

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