4
4.
Turn the internal voltage control and stability control 15 or more turns counter
clockwise (left). This procedure is necessary in case the original factory settings have
been altered.
5.
If you are using a remote voltage adjustment, set it at 50% of adjustment.
6.
Start up the prime mover and bring up to operating speed and turn on the regulator
switch.
7.
Set the internal voltage adjustment to the desired voltage setting for the generator
output. If the generator voltage is unsteady or flickering, adjust the stability adjustment
clockwise (right) until the voltage is steady and the green light is not pulsating. During
this adjustment, be sure to keep the generator voltage within 10vac of the original
setting with the internal voltage adjustment.
8.
Place the generator on line and observe the frequency and voltage.
Application Troubleshooting
Problem:
Possible Cause
No Voltage
1 3 5 7 9 11 13 15 20
Pulsating Voltage
4 5 6 12 16
Flickering Voltage
6 7 14 4
High Voltage
6 7 8 9 12 13 17 18 20
Voltage Drop on Load
5 8 10 12 16
Low Voltage
5 8 12 13
Poor Voltage Regulation
4 10 12 13 16
Voltage Changes With Engine Speed
2
No Voltage Control
13 19 20
Possible Cause:
1. Residual input voltage to the voltage regulator is below 3.5 vac.
2. Regulator is connected up for VPH operation.
3. Open exciter field or defective generator.
