Troubleshooting Voltage Issues GPS 8500/GPS 9700
wc_tx000828gb.fm 18
3.2 Flashing the Generator
Prerequisites
12V battery
Multimeter
Procedure
Follow the procedure below to flash the generator.
1. Shut down the generator.
2. Disconnect all loads from the generator.
3. Place the auto idle switch in the OFF position.
4. Remove the rear panel (a) from the generator.
5. Disconnect the F1 (+) and F2 (-) wires and the L1 and L2 wires from the
Automatic Voltage Regulator (AVR) (b).
6. Start the engine.
7. Check the engine rpm. It should be approximately 3750 rpm.
8. Connect the 12V battery to the F1 (+) and F2 (-) wires; battery positive to F 1
(+), battery negative to F2 (-).
9. Measure the voltage between the L1 wire and the L2 wire.
Is 120–160 VAC measured?
10.Reassemble the generator.
This procedure continues on the next page.
WARNING
Electric shock hazard. High voltage exists at the L1 and L2 wires. Electric shock
can cause severe injury or death.
f Never touch the L1 and L2 wires while the engine is running.
WARNING
Explosion hazard. Batteries produce hydrogen gas during normal operation.
f Keep sparks away from the battery.
Yes ____ No ____
Continue Check the stator windings.
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