Snorkel TB50 - Manual (Page 57)

Chapter 8 – Operation
TB42/TB50 – 0074923 53
7. Hold the appropriate toggle switch in the desired
direction.
8. Gradually turn the boom speed knob to control the
main boom raise/lower, extend/retract, and turntable
rotation speed.
9. Release the function toggle switch to stop move-
ment.
10. Release the ground operation switch to the off posi-
tion when no functions are being operated.
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 to the on position and turn the start switch
on. Place the control selector switch in the upper
controls 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 (refer to Figure 8.3).
Figure 8.3 – Platform
6. Pull the emergency stop outward (refer to Figure
8.4).
Use the following procedure to operate boom, turntable,
or platform functions using the lower controls. Refer to
Figure 8.2.
1. On dual fuel machines, set the fuel switch to either
LPG or gasoline.
2. Open the shut-off valve on the tank if using LPG.
3. Pull the emergency stop button (refer to Figure 8.2)
outward and place the control selector switch in the
lower control position.
Figure 8.2 – Lower Controls
4. Turn the start switch to on and pause a few sec-
onds 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.
Note
If the machine has a GM engine, there will be a 7 to 10
second delay after starting the engine, before the throttle
will go to mid or high. Start the engine and wait 10 sec-
onds before proceeding with machine operation.
5. Let the engine warm to operating temperature.
6. Hold the ground operation switch upward to the on
position while operating the boom and turntable
control toggle switches.
Emergency
Stop Button
Engine/Emergency
Power Switch
Ground Operation
Switch
Control Selector
Switch
Start Switch
Platform Foot
Switch
Lanyard
Anchors