STARTING SEQUENCE
The starting and stopping (Figure
14)
sequence
shows the manual, mechanical, and electrical events
required for satisfactory start, run and stop cycles.
STOPPING
1.
Push start-stop switch to stop position.
2.
Release switch when
setstops.lf
stop circuitfails,
close fuel valve.
APPLYING LOAD
If practicable, allow
setto
warm up beforecon.necting
a heavy load. Continuous generator overloadmg may
cause high operating temperatures that can damage
the windings. The generator can safely
h~ndle
an
overload temporarily,
but
for
normal operation, keep
the load within nameplate rating. The exhaust system
may form carbon deposits during operation at
light
loads;
apply full load occasionally
befo~e
shut-down
to
prevent excessive carbon accumulations.
Try to connect the load in steps instead
of
full load at
one time.' Most installations use a line switch that
must be closed
to
connect a -portion
of
the load.
EXERCISE STANDBY PLANTS
Infrequent use results in hard starting
..
Operate
standby sets at least
30
minutes each week.
Run
longer if battery needs charging.
EMERGENCY OPERATION IF BATTERY
-FAILS
FIGURE 14. STARTING AND STOPPING SEQUENCE
STARTING
1.
Push start-stop switch
to
start
posi~ion.
2~
Release
the
switch after engine starts and reaches
speed.
3.
Oil pressure gauge should
read
at least 20 psi
(138 kPa). Pressure relief is not adjustable.
If the set control has a reset button, push it to reset
only after a shutdown resulting from oil pressure
failure occurs. Find the cause before restarting the
engine.
To
prevent
fa.lse
starts,
hold
on
start switch
until
the centrifugal
switch automatically disengages starter motor.
~
Do
not
apply oyervoltage to the starting
.
circuit
at
any time. OYerv9ltage will destroy
the
glow
plugs and
air
heater In 2
to
3 seconds.
If
It becomes
necessary
to
use an additional source
of
power to start the set - .
use a 12 Yolt battery connected In parallel.
If
the battery fails completely
and
the set must be
operated during
an
emergency, a battery
can
be
shared with other equipment providing the set charg-
ing
circuit
is disconnected.
BREAK-IN PROCEDURE
The unit should be run in the following sequence:
1.
One half
hour
at 1/2 load.
2.
One half
hour
at
3/4
load.
3.
Full load.
Continuous running under one half load during the
first few hundred hours usually results in poor piston
ring seating, causing higher than normal oil
con-
sumption and blowby.
Drain and replace the crankcase
011
after 50 hours
of
operation;
drain while the engine Is stili hot.
OUT
-OF-SERVICE PROTECTION
To
protect a set that will be
out
of
service
for
more
than
30
days, proceed
as
follows:
1.
Run
set until thoroughly warm; generator under
at least
50
percent load.
2.
Shut down engine and drain oil base while still
warm. Refill and attach a warning tag indicating
viscosity
of
oil used.
3.
Remove spark plugs. Pour 1-ounce (28 g) of rust
inhibitor
(or
SAE #10 oil) into each cylinder.
Crank engine over several times. Install plugs.
15
To Next Page
Loading...
