Emergency Lowering - Snorkel TB42J Operato's Manual

Chapter 10 – Emergency Operation
Emergency
Stop Button
3. Step down on the platform foot switch (refer to Figure
10.4).
Platform Foot
Figure 10.4 – Platform Foot Switch
4. Hold the engine/emergency power switch in the emer-
gency power position.
5. Hold the appropriate function toggle switch in the
desired direction.

Emergency Lowering

The main boom can be lowered in an emergency using
the emergency lowering knob at the base of the lift cylin-
der. The emergency lowering knob allows the main boom
to be lowered only. Only use this method if the engine
will not start and the emergency power system will not
work.
A
Danger
Pinch points exist between boom components and
between the booms and turntable. Death or serious
injury can result if the booms or platform lowers
onto personnel. Make sure all personnel stand clear
while lowering the booms.
52
Engine/Emergency
Power
Top
Figure 10.3 – Upper Controls
Switch
Master Start Switch
Front
Use the following procedure to manually lower the main
boom.
1. Slowly turn the knob (refer to Figure 10.5) to open
the bleed down valve. Control the rate of descent by
turning the knob.
Figure 10.5 – Emergency Lowering Knob
A
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
2. Turn the knob to close the cylinder bleed down valve.
Emergency
Lowering Knob
TB42J – 0172310