Winco MDS50R3/B - Manual (Page 9)

Page 7
Upon detection of over excitation and the resulting field
voltage shutdown, the regulator will not reset or return to
an operational condition until the generator output voltage
drops to less than 6 VAC for ten seconds (minimum). TO
ACCOMPLISH THIS ON A MOBILE DIESEL GENERA-
TOR SET THE FIELD CIRCUIT BREAKER MUST BE
TURNED OFF FOR TEN SECONDS.
OPERATING THE UNIT
A. SELECTING THE CORRECT VOLTAGE
A variety of voltages are available from the three position
selector switch. The three basic connection patterns are,
Delta (120/240), Low or Parallel WYE (120/208), and
High WYE (277/480). Single phase 120/240 is available
with the switch in the 120/240 (Delta) position.
Before connecting this unit to a distribution panel or any
other loads, be sure you have the selector switch set for
the right voltage and locked. If you have any doubts as to
the voltage in your area compare your incoming power or
load name plates to the voltage table below.
1. 120/240 Three Phase* (Delta/Series configuration) -
This configuration will produce the following line-to-line
and line-to-neutral voltage. In this selector switch posi-
tion, all of the receptacles on the front panel are pow-
ered.
L1 - L2 - L3 240 Volts three phase
L1 - L2 240 volts single phase
L2 - L3 240 volts single phase
L1 - L3 240 volts single phase
L1 - N 120 Volts
L2 - N 120 Volts
L3 - N 208 volts
*This selector position is also used for single phase 120/
240 output, using only the L1 and L2 leads. The L3 three
phase output lead is the “wild” leg in the delta configura-
tion and is used only for three phase loads.
2. 120/208 Three Phase (Low/Parallel WYE configura-
tion) This configuration will produce the following line-to-
line and line-to-neutral voltage. Use of this selector
switch position allows utilization of the 120 volt receptacle
only. The 240 volt receptacles cannot be used as the
voltage at them will be 208 volts, the line to line voltage.
L1 - L2 - L3 208 Volts three phase
L1 - L2 208 volts single phase
L2 - L3 208 volts single phase
L1 - L3 208 volts single phase
L1 - N 120 Volts
L2 - N 120 Volts
L3 - N 120 volts
3. 277/480 Three Phase (High/Series WYE configura-
tion) This configuration will produce the following line-to-
line and line-to-neutral outputs. The 120 volt receptacles
are the only panel receptacles powered in this voltage
configuration. They are limited to 12 Amps total.
L1 - L2 - L3 480 Volts three phase
L1 - L2 480 volts single phase
L2 - L3 480 volts single phase
L1 - L3 480 volts single phase
L1 - N 277 Volts
L2 - N 277 Volts
L3 - N 277 volts
After you have selected the correct voltage for your
application and locked the selector switch, do the same
with the main line circuit breakers. Be sure to secure the
lock bar in place. This will prevent the incorrect breaker
from being turned on.
B. STARTUP CHECKLIST
Before initial start up and each subsequent start com-
plete the following checklist:
1. Check oil level, refill with proper grade oil.
2. Check coolant level, refill with proper mixture of
coolant. See engine manual.
3. Check for loose bolts or hardware.
4. Check tire pressure. (35 psi)
5. Trailer level to within 15 degrees.
6. Battery securely fastened, connection clean and
tight, and proper fluid level.
7. Fuel tank filled with the proper grade of diesel
fuel.
8. Check the fan belt for tightness and excessive
wear.
9. Check hoses and clamps for leakage.
10. Check the air cleaner indicator. Service only
when indicated. Do not over-service.
11. Clean out dust cup on the air cleaner.
C. ELECTRIC STARTING (Normal portable use)
CAUTION: EQUIPMENT DAMAGE
DO NOT ATTEMPT TO JUMP/BOOST START THIS
UNIT. TO DO SO MAY DAMAGE THE ELECTRONIC
MICROPROCESSOR IN THE ENGINE CONTROL.
TURN THE DC BREAKER “OFF” AND RECHARGE
THE BATTERY WITH A BATTERY CHARGER.
1. Select the desired voltage on the voltage selector
switch and lock in place.
2.
Turn off both main line circuit breakers.
3. Turn the control switch to the “run” position. In this
position the unit will go into an automatic start routine.
The control goes into a start delay and the starter will
engage 12 seconds later. The starter will automatically
disengage as the engine comes up to proper operating
speed.