Chapter 3. safety devices, Emergency stop controls 3-1, At ground control box 3-1 – Snorkel SP22 User Manual
Page 23: At platform control box 3-1, Emergency power system 3-1, Manual lowering knob 3-1, Emergency stop controls -1, Emergency power system -1 manual lowering knob -1, Danger
Chapter 3. Safety Devices
This aerial 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
Pre-operational 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 personnel can make repairs.
■ Emergency Stop Controls
There is an emergency stop control at the lower
and upper controls.
❑
At ground control box
Press the large red EMERGENCY STOP (re fer to
Fig ure 3.1) but
ton in and the en
tire ma
chine
stops, the en gine turns off, and noth ing moves.
This but ton must be out (on) to con trol the SP (pull
the button and it will pop out).
Figure 3.1—Ground 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 platform control box
Press the large red EMERGENCY STOP (refer to
Figure 3.2) button in and the entire machine
stops, the engine turns off, and nothing moves.
This button must be out (on) to control the SP from
the platform (pull the button and it will pop out).
Figure 3.2—Platform 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 failure.
Operate the emergency power switch (refer to
Figure 3.1 and 3.2) to activate the emergency
power system.
The length of time the pump can be operated
depends on the capacity of the battery.
■ Manual Lowering Knob
The manual emergency lowering knob (refer to
Figure 3.3) may be used to lower the booms if the
engine will not start and the emergency power
system will not work. The knob is located on the
base control panel.
Figure 3.3—Emergency Lowering Knob
SP20/SP22 – 11890A
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