Generator Set Load Sensor Caterpillar

Expected Result: The load sensing module is putting out a maximum signal.

Results:

• OK: Check the engine control module, the wiring to the engine control module or the engine. STOP.

• NOT OK: Go to 2.

1. Verify that the speed settings of all units at no load are identical.

   Expected Result: Speed settings are equal.

   Results:

   • OK: Go to 3.

   • NOT OK: Adjust the speed settings. If you are unable to adjust the speed settings, go to the governor Service Manual, Service Procedures, "Speed Setting".

1. Check that the load gain settings of all load sharing units are correct. See Testing And Adjusting, "Load Gain - Adjust".

   Expected Result: The load gain voltages are equal.

   Results:

   • OK: Go to 4.

   • NOT OK: Adjust the load gain voltages. STOP.

1. Check the phasing. Refer to Testing And Adjusting, "Phasing - Adjust".

   Expected Result: The phasing of the transformer is proper.

   Results:

   • OK: Go to 5.

   • NOT OK: Correct the phasing. STOP.

1. Check for unequal power factors between generators.

   Expected Result: The power factors between generators are unequal.

   Results:

   • OK: Properly adjust the generator voltage controls. STOP.

   • NOT OK: Go to 6.

1. Place a jumper between terminals 15 and 16 of the load sensing module.

2. Operate the engine. Manually apply the load while working in parallel with another unit.

   Expected Result: The problem has been corrected.

   Result:

   • OK: Repair the wiring or the switch. STOP.