Snorkel SB126J - Manual (Page 18)

Chapter 4 – Safety Devices
12 SB126J – 0192278
Ground Operation Switch
The ground operation switch (refer to Figure 4.1) pre-
vents boom and platform movement if a control switch
on the lower control panel is accidentally moved.
Hold the switch up to operate the machine from the
lower controls.
Platform Foot Switch
Stepping down on the platform foot switch (refer to
Figure 4.6) activates the upper controls.
Figure 4.6 – Platform
The foot switch must be engaged and a control must be
moved to operate the boom, drive and/or platform from
the upper controls.
Guardrails
The guardrail system includes a top rail, mid rail and
toeboards around the sides of the platform (refer to
Figure 4.6).
A gravity gate or an optional swinging gate (refer to
Figure 4.7) allows for access to the platform.
Figure 4.7 – Optional Swinging Gate
Figure 4.4 – Right Side of Upper Controls
Emergency Lowering Knob
The emergency lowering knob may be used to lower
the booms if the engine will not start and the emer-
gency power system and bleed down system will not
work. The knob is located at the base end of the main
boom lift cylinder (refer to Figure 4.5), under the center
of the turntable. It is accessible from the underside of
the turntable.
Figure 4.5 – Emergency Lowering Knob
The knob may be turned to open the cylinder bleed down
valve for emergency lowering.
Axle/Boom Interlock
The rear axles on the chassis extend to help stabilize
the machine when the boom is raised or extended.
The axle/boom interlock prevents the boom from extend-
ing and from raising above horizontal if the rear axles
are not properly extended and locked in position.
Emergency
Lowering Knob
Toeboard
Top Rail
Mid Rail
Gravity
Gate
Lanyard
Anchors
Platform Foot
Switch
Emergency Bleed
Down Switch