I
I
ABNORMAL
OPERATING
CONDITIONS
35
Abnormal
operating
conditions
are
those
elements
and ambient
tempera-
ture!? to which a generating
set
may be exposed and which tend
to
shorten
the
lifetime
of the component
parts
of the machine. Subzero
tempera-
tures,
equatorial exposure, and
extremely
dusty
atmosphere
are
typi-
cal
examples. The following preventive maintenance should be
performed
to
help avoid
unnecessary
breakdown of equipment. .
LOW
TEMPERATURES
LUBRICATION. -
Directions
for
the
proper
grade
of
oil
to
use in cold
weather
are
given in the PREPARATION
section.
When changing
oil
in cold weather, be
sure
to
drain
the oil only' when
the oil
is
warm
from
running.
If
an unexpected
drop
inthe
temperature
causes
oil in the
crankcase
to
become too thick to
run
freely
from
the oil
drain,
do not
attempt
to
start
the plaht.
If
the plant
is
started
when the
oil
is
congealed,
serious
damage may
result
from
improper
lubrication. Remove the plant to a
warm
location, or. apply heat externally until
the
oil
is
sufficiently
warm
•.
FUEL
....
Fresh
winter grade, automotive type gasoline
is
an aid
to
start-
lng in cold
weather.
Premium
highly-leaded gasoline should
not be used. Keep gasoline supplies
free
of
moisture
condensatiQr,I-'!~".
Leave room in the fuel
tank
to
compensate
forexpanslon.
",',","
AIR
CLEANER.
;..
The
oil in the
air
cleaner
should be the
same
,""~U'l,,,":,.~
that
used in the
crankcase.
If
frost
forms
in
cleaner
and
reStricts
the
How
of.air,
empty
the
air
cleaner
oil
rurlthe
plantwlth
the
air
cleaner
dry.
Refill
the
cup when
temper
conditions again
permit
the
use
of
oil in
the
normal
manner.
.
IGNITION. - Cold
weather
starting
is
aided by a
properly
servicEld
ig
..
nitionsystem.
See
that
the ignition
breaker
pOints
are
clean
and
properly
adjusted.
Clean
and adjust the
spark
plugs.
.)
BA
TTERY. -
If
the
plant useS
starting
batteries,
keep the
batteries
in . I
. a well charged condition. A
discharged
battery
may
freeze.
!
at20
0
F.
A fully
charged
battery
will
not
freeze
at
-900F.
If
the
plant ':1
is
to
remain
in a cold location during an extended shut,..down
period,
.:
:;-:;,e
3t~~:;!~ery
In
a w.arm
Plac
..
e....
Givet.h. e
battery
a freShe
..
nlng '.ha
...
rge
.•..
_
...•.•.
'.,1
ELECTRIC CHOKE. -
It
may· be nec.essary to
readjust
the
electric
choke
..
. .
'on
remote
type
plants
for
easier
starting
at
lower
'.
ambient
temperatures.
Refer
to
the
ADJUSTMENTS
section'l
COOLING,-
The flow
of
airto'theengiIie
maybe
partially
opstructed
.'
..
~.'
..
'."
to
keep the engine
at
operating
temperature,
if
desired.
,
However, use
extreme
care
to
avoid overheating.
I
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