Snorkel TB120 - Manual (Page 50)

Chapter 8 – Operation
46 T120/TB120 – 0192518
Figure 8.5 – Axles Extended and Pinned
6. Hold the jack lever in the lower position until the rear
wheels are on the ground and the jack has stopped
retracting.
Retracting The Rear Axles
The axles can be retracted by basically reversing the
above procedure.
Danger
The aerial platform can tip over if it becomes unsta-
ble. Death or serious injury can result from a tip-over
accident. In the event of a system malfunction, do
not retract the axles while the booms are elevated.
The booms must be completely retracted and lowered
before retracting the rear axles.
Upper Controls
The upper controls may be used for driving the aerial
platform and positioning the booms and platform while
on the job.
Use the following procedure to operate machine func-
tions using the upper controls.
1. At the lower controls, pull the emergency stop button
outward. Insert the key in the controls selector and
turn the switch to the upper control position.
2. On dual fuel machines, set the fuel switch to either
LPG or gasoline.
3. Open the shut-off valve on the tank if using LPG.
4. Enter the platform and securely close the gate.
5. Attach the fall restraint lanyard to one of the anchor
points.
6. Pull the emergency stop outward (refer to Figure
8.6).
Figure 8.6 – Upper Controls
7. Turn the anti-restart master switch to on and pause
a few seconds while the alarm sounds to alert others
that the machine is about to start. Turn the switch to
start, then release it to on. The engine will not start
if the switch is left in the on position for 30 seconds
or longer before turning it to start. The switch must
be turned back to off before the engine will start.
8. Let the engine warm to operating temperature.
Boom Operation
Use the following procedure to operate the turntable,
boom or platform functions.
1. Step down on the platform foot switch (refer to Figure
8.7). This switch must be held down to operate the
upper controls.
Figure 8.7 – Platform
2. Hold the appropriate control in the desired direction.
Always look in the direction of movement.
3. Releasing the control to its neutral position, or re-
leasing the foot switch will stop movement.
Emergency
Stop Button
Pin
Pin Lock
Platform Foot
Switch