Snorkel TB37 2001 - Manual (Page 15)

Chapter 4. Safety Devices
This aerial platform is manufactured with safety de-
vices, placards, and decals to reduce the likelihood of
an accident. For the safety of all personnel, do not dis-
able, modify, or ignore any safety device. Safety devices
are included in the daily prestart inspection.
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable, or override any safety device.
If any safety devices are defective, remove the aerial
platform from service until qualified maintenance per-
sonnel can make repairs.
Emergency Stop Controls
There is an emergency stop control at the lower and up-
per controls.
At the lower controls, the emergency stop is a
two-position toggle switch with a red safety guard (refer
to Figure 4.1). Push the guard down over the toggle
switch to disconnect power to all control circuits. Lift the
guard and push the toggle switch up to restore power.
Figure 4.1—Lower Controls
Note
The lower controls override the upper controls. If the
upper control emergency stop button is engaged, the
lower controls can still be used to operate the aerial
platform.
At the upper controls, the emergency stop is a
two-position push button (refer to Figure 4.2).
Push the emergency stop button in to disconnect power
to all control circuits. Pull the button out to restore power.
Figure 4.2—Upper Controls
Emergency Power System
The emergency power system includes a back-up
pump, motor, and battery. Use this system to operate
the boom and turntable functions to lower the platform if
the main power system fails due to engine or pump fail-
ure.
Hold the emergency power switch (refer to Figure 4.1
and 4.2) down to activate the emergency power system.
The length of time the pump can be operated depends
on the capacity of the battery.
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 and can be accessed
through the hole to the left of the battery disconnect
switch (refer to Figure 4.3).
Figure 4.3—Emergency Lowering Knob
The knob may be turned to open the cylinder bleed
down valve for emergency lowering.
TB37 – 0172094 page 4 - 1
DANGER
Emergency
Lowering Knob
Emergency
Stop Switch
Emergency
Power Switch
Ground Controls
Switch
Emergency
Stop Button
Emergency
Power Switch