Hobart 60CU24, Operation And Maintenance Manual With Illustrated Parts List, Page: 89 / 234

OM-2098C / Operation and Maintenance Manual
60CU24 / Series 500060C / 400 Hz. Generator Set
April 01, 2005 Chapter 2-3
Page 11
c If the protective circuit opens the load contactor and displays fault “ 70.22 ” on the fault code
after 5 seconds at 426 Hz, all components of the system are functioning properly.
d If the load contactor is not opened at 426 Hz after 5 seconds, refer to Troubleshooting Chart
in Chapter 2, Section 4.
e Return unit to normal operating condition by setting the frequency adjust switch to
“
NORMAL ” and pressing “ TEST/RESET ” button switch (Figure 2) to clear fault code.
NOTE: If the generator is operating under load at this point, open the contactors. There will be no
further need for the load bank in the following checks.
f) Testing for engine ECM faults
(1) Set the starter enable/disable switch (Figure 7) to “ DISABLE ”. “ DISABLE ” will prevent the
engine from starting, but will still supplying 12 VDC to the control system, while checking the ECM
faults.
(2) Press the green “ ENGINE START ” push button switch (Figure 2). Although the engine is not
running, the green light in the “ ENGINE START ” switch (Figure 2) will flash to indicate that power
is available to the engine ECM.
Starter Disable/Enable
PC Board Software
Engine Interface PC Board
Figure 7