Westerbeke 7.0 BCG - No-Load Adjustmem

.ac GENERATOR SINGLE PHASE
NotE: WisiEi@EKE :econtmends ~ thi!follt>wing generator tests
and Odfustments be performed by a qualified technici<in.
SINGLE EXCITER NO·LOAD VOLTAGE.ADJUSTMEIT ----------------.
i. Remove ~e louvered metal plate, at the baclc of the
generator, covering the AC tetminat connections.and
the capacitot(s). · ·
i. Start the generator and allow iHo run for apprpxhnateJ.y
five.minutes so the engine canwarnt up. :Make sure the
generatOr is operating without any equipment drawing ~C
current from the generator (that is, shut off all electrical
appliances). Make sitte the engine's 8peed (HertZ) is
correct Adjtist the fuel throttle/speed linkage as needed to
obtain the correct engine speed before proceeding. ·
l. Referring to the AC load connections diagram below,
check the geiietator's no--load voltage by :measuring the
voltage across the neutral lead and the hot lead with a volt
meter. Make sure you record this readitig. The generator's
no-load voltage is 115 - 124 volts at 60.5 - 6L5 Hertz. If
the voltage output is higher or lower than specified,
proceed.
115VJ50Hz
@
23DV/50Hz
. <.i:lUilC3)
@
@·
II GROUNDED TO THE
INSIDE Or THE
GENERATOR CASE
4. Shut off the generator. Make sure the correct Hertz lead
(60 Hertz #6, or 50 Hertz #S) is pltlgged into the
· capacitor(s).
AWAR~INfl; Capacitors 11111Stlls 111$/:hlJffled before
hailtlllllg as they store eleatrlaltj and can paoka poten-
t/ally /stbal aharge even when dlsaonneotet/ from their
power source~
NOTE: Simply cross the capacitor's two terminals with an
insulated (plastic handle) screwdriver. This will discharge
any·excess electricity.
A .WARNING: Do.not attlJmpt to.make a no-load volt·
age 11tt/:ustmsnt While the generator Is operating. The
aapaottoraan. produce a 4lltJ.50D volt charge. Touching
any wiring tan JlrodutJB 11 severs e/IJCtrlcal shock. In
addition, attempting to make a no-load voltage ad/ast·
· nilnt whils t1J'ege11111'8tor Is operating could cause your
fingers to be caught In the generator's rotor.
5. There are three plugs grouped for the right capacitor ter-
minal, #7, #8, and #9. If the generator's no-load voltage is
tow, then disconnect the lower numbered plug and con-
nect the plug with the next higher number. If the genera-
tor'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
tenninat may be any one of'the three plugs available.
6. · Jf 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 vpltage.needs to be lowered and the lowest num-
bered plug is Ct>nnected, refer to the WESTERBEKE BC
Oenetator Troubleshot)~ Gui~e).
A WARNING: Make certain the Insulating covers on
tlie unused leads atB In place and atB NOT In contact
With 11aah other or Jn contact with the gensrator's
housing.
NOTE: THE ll WIRE JS
SHOWN CONNECTED AS A
DEMONSTRATION OF HOW
THESE CONNECTIONS CAN
BE MADE.
5 BCD GENERA. ron BACK END SHOWN
.120V/60Hz
See the ENGINE ADJUSTMENT sectlon in this manual for
ADJUSTING THE ENGINE SPEED.
Engines & Generators
37