15
Safety Systems
List of Safety Systems
1.
Relief valve
Protect the hydraulic components by
relieving abnormally high pressure in the
hydraulic system.
Single holding valve
on Boom elevation cylinder
Prevents the boom from natural descent in
the event of hydraulic hose breakage.
Double holding valve
on Boom telescope cylinder
Prevents the boom from natural descent in
the event of hydraulic hose breakage.
Double holding valve
on Upper leveling cylinder
Maintains the platform level in the event of
hydraulic hose breakage.
Double holding valve
on Fly jib cylinder (if equipped)
Prevents the fl y jib from natural descent in
the event of hydraulic hose breakage.
Foot switch
The boom, fl y jib (if equipped), platform and
traveling functions are disabled unless the
foot switch is depressed.
Foot switch cancel system
This system cancel the foot switch /
enable switch if any of the boom, fl y jib (if
equipped), platform and traveling function
is not operated more than 20 seconds, then
the power indicator light blinks. Release the
switch once and the power indicator light
turn on, then operate again to enable the
functions.
Enable switch (Lower control)
The boom, fl y jib (if equipped) and
platform functions from the lower controls
are disabled unless the enable switch is
operated.
Emergency stop button
Stops all of the movements of the machine
when this button is pushed in.
Tilt alarm buzzer
The tilt alarm buzzer sounds when the
machine tilts more than 5°.
If the tilt alarm buzzer sounds when the
platform is elevated, immediately retract
the boom, and lower the boom under the
horizontal, and move to a fi rm, level surface.
Travel speed limit system
This system automatically limits the travel
speed corresponding to various boom
statuses.
For the specifi c function of this system, see
the section “2. Travel speed limit system.”
Travel function limit system
This system automatically disables the travel
function corresponding to the boom status
and the tilt angle of the machine.
For the specifi c function of this system, see
the section “3. Travel function limit system.”
Rotation lock pin
Fixes the turntable to the chassis to prevent
the turntable from being rotated when
transporting the machine.
Emergency pump
Auxiliary hydraulic pump driven by the
battery. And used to lower the platform in
the event of engine or main pump failure.
Lanyard anchorage point
The lanyard anchorage point is to hook the
safety harness to, in order to prevent falls.
Guardrail
There are guardrails on all sides of the
platform to prevent persons in the platform
from falling off the platform.
The entry gate is part of the guardrail
system and must be securely fastened after
entering the platform.
Overload sensing system
This system disables all of the functions,
Overload warning light blinks and Overload
buzzer sounds when the platform is
overloaded.
