Magnum MMG 150 Operating Manual - page 39
39
WARNING
It is strongly recommended that ONLY a licensed electrician perform any wiring and
any related connections to the generator. Installation should be in compliance of the
National Electric Code (NEC) as well as any state or local codes or regulations. Failure
to follow these procedures could result in property damage, personal injury or death.
Before any connections are attempted, make sure the main circuit breaker and the
engine start switch are in the OFF “O” position.
NOTICE
When using the generator as a standby or substitute power supply, make sure the output voltage and
phase rotation of the generator match those of the local power utility. Improper voltage or phase rotation
may cause equipment damage or malfunction.
ENGINE AND GENERATOR 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 even routine
service (oil/filter changes, cleaning, etc.) unless all electrical components are shut off. When servicing this equipment
always follow the instructions listed below.
•
Before servicing the machine, make sure the engine start switch is turned to the OFF “O” position.
•
The circuit breakers are open (OFF, “O”).
•
The emergency stop switch is activated (pushed in).
•
The negative (-) terminal on the battery is disconnected.
•
Attach a “DO NOT START” sign to the control panel. This will notify everyone that the unit is being ser-
viced and will reduce the chance of someone inadvertently trying to start the unit.
•
If the unit is connected to a remote start or transfer switch, make sure the remote switch is also off and
tagged.
•
Never wash the unit with a high pressure hose or with any kind of power washer.
•
Never wash the engine block or fuel tank with a power washer or steam cleaner. Water may enter the
cabinet and collect in the generator windings or other electrical parts causing damage.
•
If the unit is stored outside, check for water inside the cabinet and generator before each use. If wet, dry
the unit thoroughly before starting.
DAILY WALK AROUND INSPECTION
Look for conditions that could hinder performance or safety, such as (but not limited to) oil/coolant/fuel leakage,
blocked vents, loose/missing hardware and electrical connections.
Visually inspect the fan belt for cracks, fraying, stretching and that the belt is properly seated in pulley grooves.
Replace the belt according to the manufacturer’s recommendations.
Note: At the 500 hour/12 month service interval, it is recommended that the belt be removed and checked for wear.
While the belt is removed, inspect pulleys and bearings. Rotate and feel for hard turning or unusual sounds. If pulleys
or bearings need replacement contact John Deere.
CAUTION
Failure to perform a daily inspection may result in serious damage to the prime mover.
BELT TENSION
John Deere engines use two types of belt tensioners: manual and automatic. Adjust the belt using the manual
tensioner according to the manufacturer’s specifications. The automatic tensioner cannot be adjusted or repaired
and is designed to maintain proper tension over the belt’s life. Units with the automatic belt tensioner must be inspected
according to the manufacturer’s specifications.