Snorkel TB125J - Manual (Page 48)

Chapter 8 – Operation
48 T125J/TB125J – 0192214
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. Boom elevation and extension
is limited when the rear axles are retracted. The lower
controls may be used for initial set up of the aerial plat-
form, 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. Pull the emergency stop button (refer to Figure 8.2)
outward. Place the control selector switch in the
lower control position.
4. Turn start key switch until the engine starts, then
release. The engine will not start if the controls
selector switch is left in the lower control position
for 30 seconds or longer before starting the engine.
The controls selector switch must be turned back to
off before the engine will start.
5. Let the engine warm to operating temperature.
6. Place the boom/axle switch in the axle position to
operate the rear axles and in the boom position to
operate the boom and turntable functions.
7. Hold the ground operation switch in the on posi-
tion while operating the boom and turntable control
toggle switches.
8. Hold the appropriate toggle switch in the desired
direction.
9. Release the function toggle switch to stop move-
ment.
10. Place the ground operation switch in the off position
when no functions are being operated.
The engine must be running and the switch used to turn
the system on must be at the same location that the en-
gine was started. For example, if the engine was started
from the lower controls, the warm-up switch at the lower
controls must be used for the system to operate.
Machine functions are not operational while using the
hydraulic warm-up system.
To operate the warm-up system:
1. Place the engine throttle in the slow position.
2. Place the controls selector switch in the lower control
position.
3. Place the warm-up switch in the on position.
4. After the hydraulic fluid reaches 50°F (10°C) as
indicated on the thermometer, place the warm-up
switch in the off position.
Manually Warming The Hydraulic System
The hydraulic oil may be warmed by toggling the Boom/
Axle switch to Axle. The boom must be in the stowed
position.
Caution
Not all hydraulic fluid is suitable to use in the hy-
draulic system. Some have poor lubricating char-
acteristics and can 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
(-13°C) or below.
Preparing for Operation
Use the following procedure to prepare the aerial plat-
form for operation.
1. Perform a prestart inspection as described in Chap-
ter 7.
2. Place the battery disconnect switch in the on posi-
tion.
3. Close and latch the doors.
4. Before painting or sandblasting make sure the
sandblast 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.