Winco MDS50E3/B - Manual (Page 9)

Page 7
D. CONNECTING THE LOADS
There are two ways the loads may be connected to a
Mobile Diesel Generator.
1. FRONT PANEL - A variety of receptacles have been
provided for your convenience on the front panel. The
120 volt receptacles are powered when the voltage
selector switch is in the 120/240 or 120/208 volt position.
The 240 volt receptacles (although powered in both
positions) are only usable in the 120/240 volt position. In
the 120/208 volt position the 240 volt receptacles have
only 208 volts at them.
2. FULL POWER LOAD CONNECTION TERMINAL
BLOCK - For remote connections and connecting load
distribution boxes, heavy duty terminal blocks have been
provided. These terminal blocks are located behind the
access door on the side of the unit, just below the main
line circuit breakers. This access door has a safety switch
installed on it and cannot be open while the engine is
running. Opening this door with the engine running will
cause the safety latching relay to trip, shutting the unit
down. The neutral and ground are bonded together at this
panel. For use with an isolated neutral, remove the
jumper strap between the neutral connection block and
the ground lug. This will isolate the neutral from the
ground and allow you single point grounding at a distribu-
tion panel. When using these terminal blocks be sure to
use wire rated large enough to carry your full load or the
full rated load of the generator.
WARNING - EQUIPMENT DAMAGE
FAILURE TO PROPER TIGHTEN THESE TERMINAL
LUGS CAN AND WILL CAUSE DAMAGE TO BOTH
THE TERMINAL BLOCK AND THE GENERATOR. IF
NOT PROPERLY TIGHTENED THESE LUGS CAN
START TO ARC INTERNALLY CAUSING DAMAGE TO
THE TERMINAL LUGS AND GENERATOR DAMAGE.
3. GROUNDING THE UNIT - To comply with current
safety standards this generator set must be properly
grounded. Ground the Mobile Diesel Generator set by
driving an 8 ft. copper ground rod into the earth. Then
connect a #4 AWG ground cable from the grounding lug
on the generator to the ground rod.
F. UNIT STORAGE
Certain precautions must be taken if a Mobile Diesel
Generator set is to be stored for a long period of time.
The unit must be stored in a dry location to prevent the
generator winding from drawing moisture. The unit should
also be thoroughly cleaned prior to storage.
For engine storage procedures consult your local John
Deere engine dealer. They have certain procedures that
must be followed in order to prevent engine damage, i.e.
cylinder rust and injector deterioration.
50 CYCLE (HZ) OPERATION
With a couple of minor changes these Mobile Diesel
Generators are capable of producing 50 Hz power. Two
changes must be made.
A. The engine must be reduced to 1500 RPM governed
speed. Consult your local John Deere Service Center for
the proper procedure for reducing the engine speed and
setting up the governor to operate at 1500 RPM.
B. The automatic volt/hertz regulator must also be reset
to operate at 50 HZ instead of the standard 60 HZ. This
is done by cutting the two leads marked HZ that come
out of the regulator. This will change the regulator for 60
HZ operation to 50 HZ operation. If it should become
necessary to change it back to 60 HZ, you would need to
splice the leads together again.
MAINTENANCE
The ultimate aim of a preventive maintenance program is
to maintain the equipment in optimum condition, either in
service or ready for service, for the maximum amount of
time during the useful life of the equipment. The detec-
tion of faults before they develop into major sources of
difficulty will decrease the incidence of repair. To this
end, a regular schedule of cleaning and inspection will go
far toward assuring trouble-free operation. Personnel
responsible for maintenance should set up a schedule for
inspection, and cleaning at intervals calculated to keep
the equipment in good condition. In making up a sched-
ule, keep the following in mind:
A. New equipment must be carefully monitored until
extended operation has demonstrated that it is perform-
ing satisfactorily.
B. Old equipment requires more frequent inspection
(and possibly servicing) than similar equipment that has
seen less service.
C. Time spent in cleaning, inspecting and correcting
minor defects before they become major troubles means
time saved in overhaul and repair.