No-Load Voltage Adjustment - Westerbeke 4.5 BCG Operator's Manual

BC.GENERATOR SINGLE PHASE
NOTE: lvEsTERBEKE
~ommends
thatw following generator
tests
and
adjus~ be performed
by
a
qtliJlt/ifid
techriicirin..
SINGLE EXCITER HO-LOAD VOLTAGE
ADJUSTMENT __________ ;.....__ _ _ _ _ _
i.
Remove tl_le louvered metal plate, at the
back
of
the
generator, covering the AC terminal conD.eetions and
the capacitor(s). · ·
1.
Start the generator
an4
aU()W
it
«J
run
for apprpximately
five
minutes so the engine can warm
up.Make
sure the ·
generatOr is opetating without any equipment dra\\fing
~
current
from
the generator (that is, shut off
an
electrical
appliances). Make srire the
engine'~
speed
(Hertz) is
correct
Adjust
the
fuel
tbrottle/speecMinkag~aS
needed to
obtain the correct engine speed before prOOeeding. ·
3. Referring to the AC loa4 connections diagram below,
checkthegenetator'sno-Ioad \loltage
by
measuring
the
wltage across the neutral lead and the
hot
lead with a volt
meter. Make sure you record this
reading.
The generator's
no-load \IOltllge is
115 -
124 volts at 60.5 - 6LS Hertz.
If
the voltage output is higher or lower than specified,
proceed.
®
@
23DV/50Hz
fr GRoUNDED TO THE
INSIDEOl"THE
GENERATOR CASE
4.
Shut
off
the generator. Make sure the correct Hertz lead
(60 Hertz #6, or 50 Hertz
#S)
is pttlgged into the
· capacitor(s).
AWARNINQ:
CapaoHor.t m-'.1'tl dl#hliflllld before
handlllig
asthBystare
6/ectr/olty
alid
can
plak
a paten·
tlill/y lstha/· charge even when dlsconneated tram
thtllr
power
sourae~
NOTE:
Simply cross
the
capacitor's
two
tennint'.lls
with
an
insulated (plastic
handle)
screwdriver. This will discharge
any·excess electricity.
A
WARfllNG:
/lo not attsmpt to,maks a no-load volt-
age ild/:uililentWblle the genetatar Is operating. The
capao/tou:an pnlituae a
480-500
volt charge.
Jquahlng
any
wiring
can produn a severe elecfl/cal shack. In
addition, attempting to lllake a no-load voltage ad/ust·
at
While the/Jeneratar Is O/llfStlng
could
cause
your
fingers
ta
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
low, 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
terminal may be any_ one of"tbe 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 vpltage-needs to
be
lowered and the lowest num-
bered
p1ug is cbnnected, refer to the WES1ERBEKE BC
Oenetator
Troublesh_o?!iit~
Guide).
A
WARNING:
Maire certain the lnsalatlng.covers an.
ths unasell leads are In
plaae
and are NOT In
contact
With nab other
or
In
contact
with the
generator's
housing.
NOTE: THE #1 WIRE JS
SHOWN CONNECTED AS A
DEMONSTRATION OF HOW
THESt CONNECTIONS CAN
BE MADE.
5 BCD GENEM. . il'OR BACK END SHOWN
. 120V/60Hz
...
t'ERWNAL ·BLOCK
\
SINGLE EXCITER CIRCUIT
See the BNCHNE ADJUSTMENT section in this manual for
ADJUSTING THE ENGJNE SPEED.
Engines & Generators
37