Generac Power Systems MMG120 User manual

Manufactured by Magnum Power Products LLC., a wholly owned subsidiary of Generac Power Systems, Inc.
Phone: [phone] Fax: [phone] www.m-p-llc.com Page 1 of 4 4/12
Mobile Generator – MMG120 Specifications
ENGINE
John Deere®PE4045HF285 - turbocharged, diesel engine
oPrime - 144 hp @ 1800 rpm
oStandby - 158 hp @ 1800 rpm
o4 cylinder
o4.5 L displacement
oTier III approved
Steel, single wall fuel tank
o342 gal. capacity
o44 hr. run time – full load
oFuel tank built into skid of generator set
Fuel consumption at prime:
o100% - 7.4 gph (28.0 Lph)
o75% - 5.6 gph (21.2 Lph)
o50% - 3.7 gph (14.0 Lph)
Cooling system capable of operating at 120°F ambient
Low coolant shutdown
Radiator and oil drains plumbed to exterior
Rubber vibration dampers isolate engine/generator from frame
Disposable air filter - paper element
Air filter restriction indicator mounted on control panel
60 Hz engine/generator
Electronic isochronous governing
GENERATOR
Marathon Electric®
oBrushless
o4 pole
oClass H insulation
Voltage regulation +/- 1% with Marathon SE350 Voltage Regulator
SYSTEM OUTPUT
3 selector switch modes:
oSingle phase – 120 / 240V Zig Zag
oThree phase – 120 / 208V Low Wye
oThree phase – 277 / 480V High Wye
91 kW / 91 kVA – standby, single phase
85 kW / 85 kVA – prime, single phase
102 kW / 127 kVA – standby, three phase
93 kW / 116 kVA – prime, three phase
SYSTEM CONTROLS
Microprocessor-based controller
oBacklit, 128x64 pixel resolution display
o-40°F to 185°F operating temperature range
oThermostatically controlled LCD heater
120
MOBILEPOWER
MOBILEPOWER

MMG120 Generac Specifications Continued:
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oSix LED indicators w/ lamp test
Alarm / Fault (Red)
Ready / Manual (Red)
Running (Green)
Warning (Yellow)
Ready / Auto (Green)
Supplying Load (Green)
Push buttons for easy operation
oManual or Auto Start
oEngine Start or Stop
oAlarm Cancel & Fault Reset
oScrolling Arrows for Diagnostic Information
System kW output display
Line output & frequency display
Engine diagnostic display
Oil pressure
Engine temperature
Fuel level
Battery
System hours
Running hours
kW hours
Time to service
oAlarm list – warnings / shutdowns are date & time stamped
Fuel level: warning – 15%; shutdown – 5%
Overspeed protection: shutdown – 115%
Oil pressure: warning – 25 psi; shutdown – 20 psi
Coolant temperature: warning – 220°F; shutdown – 230°F
Battery voltage: over – 15VDC; under – 11VDC
Generator over voltage: warning – 110%; shutdown – 111%
Generator under voltage: warning – 87%; shutdown – 86%
Generator over frequency: warning – 105%; shutdown – 110%
Generator under frequency: warning – 95%; shutdown – 90%
Over current shutdown
ELECTRICAL CONTROLS
Remote start / stop contacts located next to lug box
Lockable control box door with diagnostics window
Lockable lug box with safety switch
oTrips main breaker when lug door is opened
oDisables voltage regulator
Cable entry guides to the lug box
oRestricts access of foreign objects
Output ground connection lug inside lug box
Convenience receptacles with individual breakers (restricted use in high wye mode)
o(2) 120V 20 Amp GFCI duplex outlets (Nema 5-20R type)
o(3) 125 / 250V 50 Amp, 3 pole, 4 wire twistlock (Non-Nema 6369)
Panel mounted rheostat for voltage adjustment - +/- 10%
1000 CCA wet cell battery

MMG120 Generac Specifications Continued:
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ENCLOSURE
Generac Mobile Power decals
Aluminum, sound attenuated enclosure
oUV & fade resistant, high temperature cured, white polyester powder paint
oInsulated and baffled
o68 dB(A) at 23 feet – prime power
Fully lockable enclosure including doors and fuel fill
Stainless steel hinges on doors
Emergency stop switch located on outside of enclosure
Central lifting point
Multi-lingual operating/safety decals
Document holder with operating manual including AC/DC wiring diagrams
TRAILER
DOT approved tail, side, brake, and directional lights
oRecessed rear lights
Transportation tie downs
Safety chains with spring loaded safety hooks
3” lunette ring hitch
(2) 6000 lb. axles with surge brakes
5000 lb. tongue jack with footplate
7.50x16E-6-W tubeless tires – 10 ply
WEIGHTS & DIMENSIONS
Skid mounted
Dry weight: 5429 lbs (2463 kg)
Operating weight: 7914 lbs (3590 kg)
132 x 50 x 77 in
(3.35 x 1.27 x 1.95 m)
Trailer mounted
Dry weight: 6825 lbs (3096 kg)
Operating weight: 9310 lbs (4223 kg)
210 x 86 x 93 in
(5.33 x 2.18 x 2.36 m)
WARRANTY
Engine and generator covered under OEM warranty – consult factory for details.
CERTIFICATIONS
CSA certified

MMG120 Generac Specifications Continued:
Manufactured by Magnum Power Products LLC., a wholly owned subsidiary of Generac Power Systems, Inc.
Phone: [phone] Fax: [phone] www.m-p-llc.com Page 4 of 4
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MMG 120 Options
ENGINE OPTIONS
In-line engine block heater (Kim Hotstart)
Fuel transfer pump
ELECTRICAL CONTROLS OPTIONS
Battery disconnect
Battery charger – 2A trickle
GENERATOR OPTIONS
Super Start Generator - motor starting applications
VOLTAGE OUTPUT OPTIONS
4 position phase switch
Single phase – 120 / 240V Zig Zag
Three phase – 120 / 208V Low Wye
Three phase – 277 / 480V High Wye
Three phase – 120 / 240V Delta
Dedicated voltage configurations
Buck Transformer kit - Provides 120V at GFCI outlets when in 277/480V
Cam locks
SYSTEM CONTROLS OPTIONS
Auxiliary strobe/audible indication for soft & hard alarm conditions
COOLANT OPTIONS
60/40 Coolant - cold weather applications
ENCLOSURE OPTIONS
Fire extinguisher
Interior cabinet light
Control panel light
FUEL TANK OPTIONS
23 hr. double wall fuel tank
120% Containment
TRAILER OPTIONS
Tandem axle trailer w/ electric brakes
6 pin or 7 spade electrical connectors
Spare tire/wheel kit
HITCH OPTIONS
2 5/16” ball