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Operation
35319 C
MGG155/210 Operating Manual
25
to the unused terminals on both units as shown on the decal located below the terminal blocks.
Paralleling More Than Two Units
To parallel more than two units, connect another CAN parallel cable from the unused terminal on the second unit
(remove resistor, if necessary) to a terminal on the next unit. Continue chaining the parallel units. Connect the resistors
to the unused terminals
on the first and last units in the series
.
Once the units are set up in parallel, they will share the load evenly during normal operation. If parallel units are in
auto mode and one unit is shut down, the load will transfer to the remaining units on line. If all paralleled units are
in manual mode, press the GCB (Generator Circuit Breaker) button on the controller, and the load gradually transitions
to the other units.
Note:
When one or more units shut down, any remaining units will shut down if the increase in proportional load is
greater than what the unit is rated for. Contact Generac Mobile Products Technical Support to verify the units to be
used in parallel are appropriate for the planned load.
OPERATION CHECKS
With the engine running, verify the following:
Verify there are no fuel leaks. If a fuel leak is detected, stop the engine immediately by pressing STOP
on the controller. Repair any fuel leaks before proceeding.
Verify there are no coolant or oil leaks. If a leak is detected, stop the engine immediately and repair the
leak before proceeding.
Verify that operation is smooth. If belt squeals, vibrations or other sources of noise exist, stop the
engine immediately and repair before proceeding.
Verify correct voltage (line
−
to
−
line and line
−
to
−
neutral) at the genset.
Verify phase rotation is the same as the attached equipment.
Minor adjustment of the output voltage is made using the voltage adjust potentiometer on the control
panel.
WARNING
DO NOT open coolant system until engine has completely cooled. Doing so could
result in serious injury. (000154)
After the operational checks are made, stop the engine by pressing STOP on the controller, and wait
for the engine to cool. When the engine is cool, check engine oil and coolant levels.
OVERCRANK SHUTDOWN
After a pre-specified duration of cranking, this function ends cranking if the engine has failed to start. The default
settings are:
•
The unit will attempt to start (crank) three times.
•
Each crank cycle lasts 10-15 seconds, followed by a five second rest (to cool the starter).
•
After three starting attempts, the controller alarm will sound and the LCD window on the controller will display
“Start Fail Alarm”.
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