Snorkel T85J - Manual (Page 48)

Chapter 8 – Operation
44 TB80/TB85J Fixed Axle – 0112792
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 position.
3. Close and latch the 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 con-
trol emergency stop button.
Boom, turntable, and platform functions may be oper-
ated from the lower controls. The lower controls may be
used for initial set up of the aerial platform, and for test-
ing 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 switch (refer to Figure 8.2)
in the on position and place the controls switch in
the ground position.
Figure 8.2 – Lower Controls
Hydraulic System Cold Weather Warm-Up
Some machines may have a hydraulic fluid warm-up sys-
tem that will automatically warm the fluid upon activating
the warm-up switch. The hydraulic fluid may also be
warmed manually if the machine is not equipped with the
optional warm-up system.
A
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
(0°C) or below.
Hydraulic System Warm-up Switch
This system may be used to warm the hydraulic fluid
when the ambient temperature is below 32°F (0°C) and
boom movement is sluggish because of cold fluid.
There may be a toggle switch for the warm-up system on
the lower control panel and/or one on the left side of the
upper control panel.
The engine must be running and the switch used to turn
the system on must be at the same location that the
engine 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.
To operate the warm-up system:
1. Start the engine and place the engine throttle in the
low position.
2. From the same control station that the engine was
started, place the warm-up switch in the on position.
3. After the hydraulic fluid reaches 50°F (10°C) as indi-
cated on the thermometer, place the warm-up switch
in the off position.
Manually Warming The Hydraulic System
The hydraulic oil may be warmed by bottoming out the
boom extension cylinder. Raise the main boom so it is
horizontal and operate the boom retract function while
the machine is stowed. With the cylinder bottomed out
the oil flow will produce heat to warm the hydraulic oil.
A
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
(0°C) or below.
Engine/Emergency
Power Switch
Start Switch
Emergency
Stop Button
Ground Operation
Switch