Snorkel TB50 - Manual (Page 22)

Chapter 4 – Safety Devices
18 TB42/TB50 – 0074923
Emergency Lowering Knob
The emergency lowering knob may be used to lower
the booms if the engine will not start and the emergency
power system will not work.
The knob is on the base end of the main boom lift
cylinder (refer to Figure 4.3) under the left side of the
turntable.
Figure 4.3 – Emergency Lowering Knob
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
Step down on the platform foot switch (refer to Figure
4.4) to activate the upper controls.
Figure 4.4 – 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 guardrails (refer to Figure 4.5) help protect person-
nel from falling off the platform.
The guardrail system includes:
A top rail
A mid rail
A gravity gate or optional swinging gate
Optional side entry gravity gate
Toeboards around the sides of the platform.
The gravity gate(s) allow for access to the platform and
close automatically after entering or exiting the platform.
After entering the platform check to make sure the gates
are fully lowered and even with the mid rail.
The optional swinging gate (refer to Figure 4.5) allows
for access to the platform. The gate must be securely
latched except when personnel are entering or leaving
the platform.
Figure 4.5 – Platform Swing Gate
Lanyard Anchors
Two lanyard anchors for fall restraint anchorage are
provided below the upper controls at the front of the
platform (refer to Figure 4.4).
Note
The lanyard anchors are not designed for lifting or tying
the machine down.
All personnel in the platform must connect their fall
restraint device to a lanyard anchor before raising
the platform.
Attach only one fall restraint device to each lanyard
anchor.
Do not use the aerial platform for personal fall arrest
anchorage.
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Emergency
Lowering Knob
Toeboard
Platform Foot
Switch
Lanyard
Anchors
Gravity
Gate
Top Rail
Mid Rail