Snorkel SRT2670 - Manual (Page 31)

5. Automatic Shut-offs and Circuit Breakers
■ Automatic Shut-offs
❑ Level sensor
When the level sensor alarm sounds, automatic in-
terlocks make it impossible to drive the SRT or raise
the platform. For more complete information see
the “Level Sensor” subsection of the “Safety De-
vices ” chapter.2
❑ Engine temperature
There is a temperature sensor in the engine. It mea-
sures the temperature of the antifreeze-water mix-
ture as the mixture leaves the top of the radiator and
enters the top of the engine. If the temperature
reaches 210(F (99(C) an alarm sounds. If the tem-
perature continues to rise, the engine shuts off
when the temperature reaches 230(F (110(C). The
engine will not restart until the temperature drops
below 210(F (99(C).
❑ Engine oil pressure
There is an oil pressure sensor in the engine. It
measures the engine oil pressure at the oil filter. If
the pressure falls below a safe operating value the
engine shuts off. The engine will restart with low
pressure but it will only run a few seconds before it
automatically shuts off again.
❑ Platform height vs. drive speed
When the platform is over 1.7m (5’ 6") above the
ground the drive speed is limited to its slowest
speed and the engine revs are also automatically
lowered.
❑ Parking brakes
When the JOYSTICK CONTROLLER is in the neu-
tral position the SRT parking brakes are automati-
cally set. The brakes automatically release when
you move the JOYSTICK CONTROLLER to drive.
❑ Dynamic brakes
When you drive an SRT down a slope, if the SRT
begins to coast (outrun the drive motors) the hy-
draulic system “senses” the coasting condition. The
hydraulic drive motors then become hydraulic
brakes and the SRT is slowed. This action prevents
SRTs from speeding down grades.
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