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If the main hydraulic system fails, the aerial platform may
be lowered and stowed using the emergency power sys-
tem. The main boom may be lowered using the emer-
gency lowering knob. The machine may be towed if the
drive system fails. Refer to Emergency Power System,
Emergency Lowering, or Towing for the appropriate pro-
cedure.
Emergency Power System
The emergency power system can be used to operate
the machine from the lower or upper controls.
A
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
battery. Do not use this system for normal opera-
tion.
Only use the emergency power system if the main power
system fails.
Lower Controls
Use the following procedure to operate the machine us-
ing the emergency power system from the lower con-
trols.
1. Place the battery disconnect switch in the on posi-
tion (refer to Figure 10.1).
Battery Disconnect Switch
Figure 10.1 – Battery Disconnect Switch
2. Place the key in the control selector switch (refer to
Figure 10.2) and turn the control switch to the lower
control position.
3. Pull the emergency stop button outward.
4. Hold the ground operation switch in the on position
while holding the engine/emergency power switch
down in the emergency power position.
SB47JRT – 0075522
Chapter 10 – Emergency Operation
Emergency
Stop Button
Start Switch
Figure 10.2 – Lower Controls
5. Hold the appropriate function toggle switch in the
desired direction.
Upper Controls
For the upper controls to be operational:
• the battery disconnect switch must be in the on po-
sition.
• the emergency stop button at the lower controls must
be in the on position.
• the controls selector switch at the lower controls must
be in the upper controls position.
Use the following procedure to operate the machine us-
ing the emergency power system from the upper con-
trols.
1. Pull the emergency stop button outward (refer to Fig-
ure 10.3).
2. Turn the start switch on.
3. Place the drive/boom selector switch in the appropri-
ate position.
4. Step down on the platform foot switch (refer to Figure
10.4).
Control Selector
Switch
Engine/Emergency
Power Switch
Ground Operation
Switch
49
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