DIESEL GENERATOR MLG8 • MLG15 MLG20 • MLG20ICAN 20 01145 OPERATING MANUAL Parts manuals available online www.magnumpower.
INTRODUCTION This manual provides information and procedures to safely operate and maintain the Magnum Power Products LLC 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 Magnum Power Products LLC, or can be found at www.magnumpower.com.
TABLE OF CONTENTS Page INTRODUCTION ................................................................................................................................ 2 SAFETY NOTES ................................................................................................................................ 4 OPERATING SAFETY ....................................................................................................................... 4 ENGINE 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.
can cause nausea, fainting or death. Make sure engine exhaust cannot seep into closed rooms or ventilation equipment. • DO NOT operate the unit on a combustible surface. • DO NOT fill fuel tank near an open flame, while smoking, or while engine is running. DO NOT fill tank in an enclosed area with poor ventilation. • DO NOT operate with the fuel tank cap loose or missing. • DO NOT touch or lean against hot exhaust pipes or engine cylinders.
• ALWAYS disconnect the negative (-) battery cable from the corresponding terminal before performing any service on the engine, generator or any other components. Remove the negative (-) battery cable from the corresponding terminal if the unit is to be stored or transported. • Replace all guards and safety devices immediately after servicing. TOWING SAFETY Towing a trailer requires care.
SAFETY SYMBOL SUMMARY This equipment has been supplied with numerous safety and operating decals. These decals provide important operating 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 parts manual. Below is a summary of the intended meanings for the symbols used on the decals. Safety alert symbol; used to alert you to potential personal injury hazards.
SPECIFICATIONS - MLG8, MLG15 MAGNUM MODEL MLG8 MLG15 Engine Make/Brand................................................................... Mitsubishi......................................Mitsubishi Model ............................................................................ L3E-W461ML................................S4L2-Y461ML EPA Tier ........................................................................ 4f...................................................4f Horsepower - prime hp (kW) ..........
SPECIFICATIONS - MLG20, MLG20ICAN MAGNUM MODEL MLG20 MLG20ICAN Engine Make/Brand................................................................... Isuzu .............................................Isuzu Model ............................................................................ 4LE1NYGV-03 ..............................4LE1NYGV-03G 4LE1NYGV-03E EPA Tier ........................................................................ 4i ...................................................
UNIT SERIAL NUMBER LOCATIONS Refer to the illustration 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.
COMPONENT LOCATIONS 2 3 1 4 5 8 6 7 00463 1. FUEL FILLER LOCATION (under door): Use clean DIESEL FUEL ONLY. 2. RADIATOR ACCESS PANEL: Remove this panel for engine coolant service. 3. CONTROL PANEL LOCATIONS (under door): Refer to “Main Control Panels” on page 12. 4. EMERGENCY STOP SWITCH (on MLG8 units the switch is located on the front panel): For emergency shutdown; stops engine and trips main circuit breaker. 5.
MAIN CONTROL PANELS 1 2 3 240VAC MAIN CIRCUIT BREAKER I ON 4 ON O 9 TURN MAIN BREAKER OFF 120VAC BREAKER 120VAC BREAKER 20 20 5 GLOW PLUG INDICATOR OFF GLOW PLUGS RUN START 240VAC BREAKER 8 120VAC 120VAC I ON 6 ON O 240VAC 0 0 0 0 0 HOURS 7 NEUTRAL BONDED TO FRAME MLG8 2 6 MAIN BREAKER 240V 1 ON 4 0 0 0 0 0 ON HOURS 5 TURN MAIN BREAKER OFF OFF GLOW PLUG RUN START NEUTRAL BONDED TO FRAME MLG15 • MLG20 • MLG20ICAN 00464 12
1. CIRCUIT BREAKER INDICATOR LIGHT: This light indicates that the main circuit breaker must be opened (switched off) before starting the engine. 2. MAIN CIRCUIT BREAKER: This breaker will disconnect power to the receptacle panel. 3. 240VAC CIRCUIT BREAKER: This 240V (30A) breaker is supplied for the standard 240V twist-lock receptacle. 4. CONTROL POWER SWITCH: Keyed switch operates glow plugs and starts and stops engine. 5. GLOW PLUG INDICATOR: Indicates operation of the engine glow plugs. 6.
PRESTART CHECKLIST Before starting the unit, all items in the prestart checklist must be completed. Read and understand ALL safety sections at the beginning of this manual. Ensure all maintenance procedures are up to date. For more information, refer to “General Maintenance” on page 18 and Basic Maintenance Schedules beginning on page 19. The unit must be level. The unit must be dry. Check for any water inside, on, or near the unit; dry if needed.
2. Turn the key on the Control Power switch to the left Glow Plug position and hold the key in place for five seconds, or until the glow plug indicator turns red. As soon as it is glowing, turn the key to the right Start position and hold it until the engine cranks and starts running. Release the key, it will move to the Run position. Note: For cold weather conditions, refer to the engine operator’s manual for appropriate glow plug interval.
RECEPTACLE PANEL The MLG15, MLG20, and MLG20ICAN models are equipped with a receptacle panel for running accessories or tools from the generator. Power is supplied to the receptacles any time the engine is running and the main circuit breaker is switched to the ON (I) position. Each receptacle has an individual circuit breaker, located inside the cabinet under a flip-up cover. Each circuit breaker corresponds with the receptacle located below it on the receptacle panel.
5. Check for proper inflation of the trailer tires. Refer to the Specifications beginning on page 8. 6. Check the wheel lugs. Tighten or replace any lugs that are loose or missing. If a tire has been removed for axle service or replaced, tighten the lugs in the order shown to the following specifications: A. B. C. D. 1 Start all lug nuts by hand. First pass tighten to 20-25 ft-lbs (27-33 Nm). Second pass tighten to 50-60 ft-lbs (67-81 Nm). Third pass tighten to 90-120 ft-lbs (122-162 Nm).
GENERAL MAINTENANCE Poorly maintained equipment can become a safety hazard. In order for the equipment to operate safely and properly over a long period of time, periodic maintenance and occasional repairs are necessary. NEVER perform routine service (oil/filter changes, cleaning, etc.) unless all electrical components are shut off. Before servicing the unit, always follow the instructions listed below. • • • • • • • • • • • • Ensure the Control Power switch is turned to the OFF (O) position.
BASIC MAINTENANCE SCHEDULE - MITSUBISHI ENGINE Refer to the original equipment manufacturer’s operating manual for a complete list of maintenance requirements. Failure to comply with the procedures as described in the engine operator’s manual will nullify the warranty, decrease performance and cause equipment damage or premature equipment failure. Maintenance records may be required to complete a warranty request. Use the schedule in the following table as a guide for regular maintenance intervals.
BASIC MAINTENANCE SCHEDULE - ISUZU ENGINE Refer to the original equipment manufacturer’s operating manual for a complete list of maintenance requirements. Failure to comply with the procedures as described in the engine operator’s manual will nullify the warranty, decrease performance and cause equipment damage or premature equipment failure. Maintenance records may be required to complete a warranty request. Use the schedule in the following table as a guide for regular maintenance intervals.
JACK MAINTENANCE The following procedures should be performed at least annually. SIDE-WIND MODELS • • • The internal gearing and bushings of the jack must be kept lubricated. Apply a small amount of automotive grease to the internal gearing by removing the jack cover, or if equipped, use a needle nose applicator or standard grease gun on the lubrication point found on the side of the jack near the crank. Rotate the jack handle to distribute the grease evenly.
AC WIRING DIAGRAM - MLG8 30 AMP TWIST MAIN . RED CB7 . . 30A GEN . BLK N . TO GND BAR BLK . BLK . . Y G X Z GN . BLK . . . GFCI CB6 . RED TO GND BAR . 20A . RD CB5 . TO GND BAR GFCI . RD WHT . . . 20A . SOME UNITS GRN . TO GND BAR 1 2 3 . WT . 4 5 6 7 . 8 . 9 . TO GND BAR 22 GN WT WT . . . 10 67115_A_12.13.
CIRCUIT BREAKER 125A 6GA CT-3 PAIR BLK 10GA 6GA CT-1 TO TB 3 ON DC TERM BLOCK YEL COM CIRCUIT BREAKER 125A L0 8/4 SOOW CABLE RED GRN WHT PAIR BLK 10GA 12VDC SHUNT L1 BLK MECHANICAL LUGS 240V BREAKER BLK 10GA BLK 10GA BLK 10GA BLK 10GA 240V BREAKER 240V BREAKER BLK 10GA BLK 10GA BLK 10GA RCPT. 240V BLK BLK 240V RCPT. BLK BLK 240V RCPT. BLK BLK 240V RCPT.
(2x5-20R, 1xTT-30, 1xL14-30R, 2x14-50) 20 AMP G.F.I RECEPTACLE 20 AMP CIRCUIT BREAKER 20 AMP G.F.
RED BLK RED 240 VOLT 30 AMP TWIST LOCK RECEPTACLE GRN WHT GRN GRN WHT WHT 240 VOLT 50 AMP TWIST LOCK RECEPTACLE 240 VOLT 50 AMP TWIST LOCK RECEPTACLE WHT GRN RED BLK BLK 50 AMP CIRCUIT BREAKER RED BLK RED 30 AMP CIRCUIT BREAKER BLK RED BLK RED BLK BLK RED 30 AMP CIRCUIT BREAKER BLK BLK RED 30 AMP CIRCUIT BREAKER 20 AMP CIRCUIT BREAKER BLK RED 240 VOLT 30 AMP TWIST LOCK RECEPTACLE GRN GRN WHT WHT 240 VOLT 50 AMP TWIST LOCK RECEPTACLE 240 VOLT 30 AMP TWIST LOCK RECEPTAC
240 VOLT 30 AMP TWIST LOCK RECEPTACLE 240 VOLT 30 AMP TWIST LOCK RECEPTACLE RED GRN WHT WHT 240 VOLT 50 AMP TWIST-LOCK RECEPTACLE GRN GRN WHT GRN RED BLK BLK 240 VOLT 30 AMP TWIST-LOCK RECEPTACLE GRN WHT GRN GRN WHT WHT 240 VOLT 30 AMP TWIST-LOCK RECEPTACLE 240 VOLT 30 AMP TWIST-LOCK RECEPTACLE WHT GRN TO MAIN BREAKER RED BLK BLK 50 AMP CIRCUIT BREAKER RED 50 AMP CIRCUIT BREAKER BLK RED BLK BLK 30 AMP CIRCUIT BREAKER RED BLK RED 30 AMP CIRCUIT BREAKER 20 AMP CIRCUIT BRE
"TURN MAIN BREAKER OFF" WARNING LIGHT BLK/YEL ALTERNATOR RED/VIO RD/VI ORG/YEL STARTER CONTROL RESISTANCE BLK/YEL RED/YEL BLU (COM) WHT (HOLD) MAIN BREAKER AUX SWITCH GLOW PLUGS SOLENOID BLK BLK BLK/WHT RED (PULL) RED RED/WHT BLK/YEL VIO/YEL RED/YEL N/C N/O 12V BATTERY TIME DELAY RELAY - + COM RD/VI STARTER SWITCH GRY/VIO GRY/BLU OVERHEAT WARNING SWITCH (N.O.) VI/YL 10 AMP CIRCUIT BREAKER BLK RED BLK/WHT OIL PRESSURE WARNING SWITCH (N.C.
SOLENOID MITSUBISHI ISUZU SOLENOID BLU (COM) WHT (HOLD) RED (PULL) BLU (COM) WHT (PULL) "TURN MAIN BREAKER OFF" WARNING LIGHT VI/YL RD/YL RD/YL VI/YL ALTERNATOR BLU BLK/YEL MAIN BREAKER AUX SWITCH GLOW PLUGS BLK BLK/WHT 28 BLK/YEL RED/VIO SPLICE ORG/YEL RED/YEL STARTER CONTROL RESISTANCE BLK RED (HOLD) RED RED/WHT BLK/YEL E-STOP SWITCH VIO N/C N/O 12V BATTERY TIME DELAY RELAY - + COM VIO/WHT RD/VI STARTER SWITCH GRY/VIO GRY/BLU OVERHEAT WARNING SWITCH (N.O.
- TIME DELAY B R2 BR C ACC STARTER SWITCH R1 LIGHT FUSE 10A ALT CONFIG MTB PIN 12 INTERIOR LIGHT WT/VI + COM NO NC PNK BK1 TO GND BAR CIRCUIT BREAKER 20A GND GY SW RPM PASS OPT 2 1 OR/YL1 ESTOP 4 3 TO CNTRL PANEL START SOL WIRE OR/YL2 TO MAIN BREAKER AUX SWITCH NC PIN TO GND BAR BK/WT2 RPM SENSOR BATTERY DISCONNECT BATTERY DISCONNECT SOL 12 V BATTERY + BK/WT RD - FLOAT SWITCH BK/WT1 GND RD/WT PWR WT RD BK/WT PASS SOLENOID WT SPLICE 12 V BATTERY BK
LEFT TAIL/TURN LAMP RED MARKER LAMP AMBER MARKER LAMP BK BK BK BK WT BK RD WT SPLICE SPLICE SPADE SPADE SPADE BN WT SPADE BN LICENSE PLATE LAMP WT SPADE 30 BK YL WT BN BN GN YL BN WT TRAILER PLUG GN RING WT SPLICE SPADE SPADE BN WT BK RD WT SPLICE SPLICE BK BK BK BK RIGHT TAIL/TURN LAMP RED MARKER LAMP AMBER MARKER LAMP TRAILER LIGHTS WIRING DIAGRAM 90341_B_12.20.
SERVICE LOG OIL GRADE AND TYPE: ____________________________ BRAND:___________________________________ COOLANT MIXTURE: ______________________________ BRAND:___________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ ______________________________________________
REV: L PART NO: 10289 11.21.
