Chapter 4 - Safety Devices; Emergency Stop Controls; Emergency Power System; Emergency Lowering Knobs - Snorkel AB60J Operator's Manual

This aerial work platform is manufactured with safety
devices, placards, and decals to reduce the likelihood
of an accident.
For the safety of all personnel, do not disable, modify,

or ignore any safety device.
Safety devices are included in the daily prestart

inspection.
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury could 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 person-
nel can make repairs.

Emergency Stop Controls

There is an emergency stop control at the lower and
upper controls.
At the lower controls, the emergency stop is a two-posi-
tion red push button (refer to Figure 4.1).
Emergency
Stop Button
Figure 4.1 – Lower Controls
Push the emergency stop button inward to disconnect

power to all control circuits.
Pull the button outward to restore power.

Note
The lower controls override the upper controls. If the up-
per 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-posi-
tion red push button (refer to Figure 4.2).
AB60J – 0181972
Chapter 4 – Safety Devices
Engine/Emergency
Power Switch
Ground
Operation Switch
Emergency
Stop Button
Figure 4.2 – Upper Controls
Push the emergency stop button inward to disconnect

power to the upper control circuits.
Pull the button outward to restore power.


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 failure.
Caution
The emergency power system is for emergency low-
ering and stowing only. The length of time the pump
can be operated depends on the capacity of the bat-
tery. Do not use this system for normal operation.
Hold the engine/emergency power switch (refer to

Figure 4.1 and 4.2) downward to activate the emer-
gency power system.
Release the switch to disengage the emergency

power system.
The length of time the pump can be operated depends

on the capacity of the battery.

Emergency Lowering Knobs

The emergency lowering knobs may be used to lower
the booms if the engine will not start and the emergency
power system will not work.
There is a knob to lower the riser boom and one to lower
the main boom.
The riser boom knob (refer to Figure 4.3) is inside the

rear of the turntable.
Engine/Emergency
Power Switch
15