Snorkel SP22 - Manual (Page 52)

2. Step down on the platform foot switch (refer
to Figure 8.4)
Figure 8.4—Platform Foot Switch
3. Operate the emergency power switch.
4. Operate the boom or platform joystick‚.
5. Move the boom joystick in the desired
direction.
6. Return the joystick to neutral to stop
movement.
■ Emergency Lowering
The main boom can be lowered in an emergency
using the emergency lowering knob at the ground
controls. 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.
NOTE
If the main boom is lowered below horizontal, the
platform will not remain level.
Use the following procedure to manually lower the
main boom.
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.
1. Slowly turn the knob (refer to Figure 8.5) to
open the bleed down valve. Control the rate
of descent by turning the knob.
Figure 8.5—Emergency Lowering Knob
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.
NOTE
CEE COMPLIANCE
There is an additional emergency bleed down knob
located at the base of the main lift cylinder.
This second emergency lowering knob must also
be opened in order for the main boom to bleed
down.
Once the boom is lowered ensure that this valve is
fully closed
■ Towing
The aerial platform may be towed for short periods
with the speed not exceeding 2.5 km/h (1.5 mph).
The towing vehicle must be capable of safely
towing and stopping the aerial platform.
The hubs (4) on each drive wheel must be placed in
freewheeling mode.
The aerial platform is free to move when the
hubs are freewheeled. Death or serious
injury can result. Securely fasten the tow
vehicle to the aerial platform before placing
page 9 - 2 SP20/SP22 – 11890A
Chapter 9. Emergency Operation
DANGER
DANGER
DANGER