supply to the heater. A spring loaded
panel directly below the water temperature gage. This
terminal on the light socket is connected to
instrument indicates the condition of the batteries when
the circuit breaker so that the lamp will light
the engine is running or stopped. The ignition switch must
when pressed in if the circuit breaker is in.
be in the ON position before the indicator will show
and power is available.
battery condition. If the needle is in the RED part of the
dial batteries are dangerously low and need immediate
(2) Circuit breaker (C, fig. 14). The circuit
attention. If the needle is in the YELLOW area the
breaker is the center button of the heater
batteries are in a weakened condition and should be
control box. It is a safety device installed in
serviced or charged during the next regular maintenance
the system to prevent current overloads
period. When the needle is in the GREEN part of the dial,
from causing a fire hazard. To reset after
the batteries are properly charged for normal operation.
tripping, press in the circuit breaker button.
Caution:
warning lights on the crane instrument panel. The light
Pulling out on the circuit breaker
next to the oil pressure gage gives a red light when the oil
button breaks all electrical circuits to
pressure is below operating minimum. The light next to
the heater. Do not attempt to stop
the water temperature gage gives a red light when water
heater operation with the circuit
temperature is above the safe operating maximum.
breaker. Stopping heater operation
with the circuit breaker prevents the
bottom switch in the row of switches of the right hand side
heater from purging itself at the end of
of the instrument panel and operates the cab heater on
the operating cycle.
the non-winterized units. It has hi-lo and off positions
(3) Control switch (C, fig. 14). The control
marked on the switch.
switch is located on the right side of the
heater control panel. It is a three-position
switches in the row of switches on the instrument panel
toggle-type switch with ON-HI (up), OFF
operate the cab and floodlights on the crane. They are a
(center), and ON-LO (down) used to select
toggle on-off switch.
the desired heater range.
Units Only). The winterized crane-shovel units have two
control levers mounted in the duct located below the heat
gas-fired heaters, one for the engine and one for the cab
control boxes. They provide control of the heat to various
and components. Both heater control boxes are mounted
ducts and have four position settings from open to closed.
to the right and behind the operator. The control boxes
are identical in operation. Each control box has three
radiator shutter control lever is mounted on the radiator
controls.
shutter. It has three positions open, half, and closed.
(1) Indicator light (C, fig. 14). The function of
aa. Overspeed Governor Reset Button.
The
the indicator light is to show when the
overspeed governor reset button, located on top of the
heater is in operation. It is located on the
overspeed governor, is a push type button. It is used to
left side of the control panel. The lamp
reset the overspeed button.
glows constantly when the heater is on
Note.
either high-fire or low-fire operation. It will
Should overspeed occur, the governor
glow when the heater has just been shut off
will stop the engine and it cannot be
for approximately two minutes until the
restarted until the RESET BUTTON on
heater starts to cool. The indicator light
the overspeed governor is pushed to
may be used as a check on the power
reset it.
AGO 6819A
30
