Westerbeke BCG4.0KW Operator's Manual page 61

No-load Voltage Adjustment: BGG 4.0KW
1. Remove the louvered metal plate covering the terminal connections and the capacitor (see page 59).
2. Start the generator and allow it to run for approximately five minutes so the engine can warm up. Make
sure the generator is operating without any equipment drawing AG current from the generator (that is,
shut OFF all electrical appliances). Make sure the engine's speed (Hertz) is correct. Adjust the governor
as needed to obtain the correct engine speed before proceeding.
3. Referring to the AG load connections diagram below, check the generator's no-load voltage by measur-
ing the voltage across the neutral lead and the hot lead with a volt meter. Make sure you record this read-
ing. The generator's no-load voltage is 115 - 124 volts at 60.5 - 61.5 Hertz.
If
the voltage output is higher
or lower than specified, proceed.
N
l,
N
l2
N
l2
L,
1
4 3
1
4_3
t 4 3
1 4 3-
1
4-=-3
5_
a2
6
5 2a6
5_2_
6 6_
5a2-6
L,
L, ,N
N
110v
50 Hz
120v
60Hz
220v 50 Hz
240v
60Hz
220v
50Hz
4. Shut off the generator. Make sure the correct Hertz lead (60 Hertz #6, or 50 Hertz #5) is plugged into the
capacitor. Refer to the illustration on the top of the next page.
JWARNING!
DO NOT attempt to make a no-load voltage adjustment while the generator is operating. The
capacitor can hold a 450 - 500 volt charge. Touching any wiring can result in a severe electri-
cal shock. In addition, attempting to make a no-load voltage adjustment while the generator
is operating can cause fingers to be caught in the generator's rotor.
5. Refer to the illustrations the next page before making any adjustments. Note that there are three plugs
grouped for the right capacitor terminal, #7, #8, and #9. If the generator's no-load voltage is low, then
disconnect the lower numbered plug and connect the plug with the next higher number. If the generator's
no-load voltage is high, then disconnect the higher numbered plug and connect the plug with the next
lower number. Note that the plug presently connected to this terminal may be anyone of the three plugs
available.
6. If the generator's no-load voltage cannot be adjusted because the voltage needs to be increased and the
highest numbered plug is already connected to the right terminal, or the voltage needs to be lowered and
the lowest numbered plug is connected, then follow the steps at the bottom of the next page. Ask your
local Westerbeke dealer for a Be GENERAL TROUBLESHOOTING GUIDE before performing the steps
listed at the bottom of the next page.
NOTE: Make sure the insulating covers on the unused leads are in place and are not In con-
tact with each other or in contact with the generator's housing.
Westerbeke Generators
58