Preparing For Operation; Lower Controls; Upper Controls - Snorkel A46JRT Operator's Manual

Chapter 8 – Operation
Caution
Not all hydraulic fluid is suitable to use in the hydrau-
lic system. Some have poor lubricating character-
istics and may increase component wear. Only use
hydraulic fluid as recommended.
Use cold weather hydraulic oil as recommended in the
machine General Specifications in temperatures of 10°F
(-12°C) or below.

Preparing for Operation

Use the following procedure to prepare the aerial platform
for operation.
1. Perform a prestart inspection as described in Chapter 7.
2. Place the battery disconnect switch in the on position.
3. Close and latch the cowling doors.
4. Before painting or sandblasting make sure the sand-
blast protection kit and the platform control cover are
properly installed. These options, when used properly
will protect the control placards and cylinder rods from
paint overspray and abrasion while sandblasting.

Lower Controls

The lower controls override the upper controls. This
means that the lower controls can always be used to
operate the platform regardless of the position of the
upper control emergency stop button.
Boom, turntable, and platform functions may be operated
from the lower controls. The lower controls may be used
for initial set up of the aerial platform, and for testing and
inspection.
Use the following procedure to operate boom, turntable,
or platform functions using the lower controls.
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. Place the emergency stop button (refer to Figure
8.1) in the on position and place the controls switch
in the lower control position. The engine starts to
preheat when the switch is placed in the lower control
position. Wait ten seconds for the engine to preheat,
if required.
44
Controls Selector Switch
Diagnostic Center
Emergency
LCD Display
Stop Button
Start Button
Figure 8.1 – Lower Controls
4. Press and hold the start button until the engine starts,
then release.
5. Let the engine warm to operating temperature.
6. Hold the ground operation switch upward while oper-
ating the boom and turntable control toggle switches.
Note
If a machine function is not operated within 10 seconds of
activating the ground operation switch, no functions will
operate until the switch is released and again placed in
the enable position.
7. Hold the appropriate toggle switch in the desired direction.
8. Release the toggle switch to stop movement.
9. 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 functions
using the upper controls.
1. At the lower controls, pull the emergency stop button
outward and place the controls selector switch in the
upper control position.
2. On dual fuel machines, set the fuel switch (refer to
Figure 8.2) to either LPG or gasoline.
Platform Overload/
Tilt Warning Light
Engine/Emergency
Power Switch
Ground
Operation
Switch
A46JRT – 0260996