Snorkel TB42J, Operato'S Manual

Page: 36 / 68

Chapter 7 – Prestart Inspection
32 TB42J – 0172310
Horn
Press the horn button to ensure that it sounds to warn
personnel in the area.
Electrical Power Outlet
Connect a source of 125 volt AC power to the power-input
connector on the left side of the lower control panel (refer
to Figure 7.20).
Figure 7.20 – Lower Controls
Some machines may have an electrical cable already
plugged into the outlet on the lower control panel. In that
case, power is supplied by an optional AC generator. An
external power source is not required.
With the engine running, place the machine/generator
control in the generator position. This will provide electri-
cal power to the two electrical outlets at the platform and
to the outlet on the end of the generator housing.
Plug an electrical tool into the receptacle at the platform
and at the generator and try to operate the tool to verify
proper operation of the outlet.
The outlet is equipped with a ground fault circuit inter-
rupter (GFCI). Use the following procedure to test the
GFCI.
1. Push the test button (refer to Figure 7.21).
Figure 7.21 – Electrical Power Outlet
Reset Button
Test Button
Power-Input
Connector
Figure 7.19 – Upper Controls
4. Turn the anti-restart master switch to start until the
engine starts, then release it.
5. Let the engine warm to operating temperature.
A
Danger
Pinch points may exist between moving compo-
nents. Death or serious injury can result from be-
coming trapped between components, buildings,
structures, or other obstacles. Make sure all person-
nel stand clear of the aerial platform while perform-
ing the prestart inspection.
6. Test the platform foot switch by moving a boom func-
tion switch without stepping on the foot switch. If
movement occurs the interlock is not functioning prop-
erly. Do not operate the machine until the problem is
corrected.
7. Test the operation of each control in both directions
from the upper controls.
8. The drive range switch and maximum travel speeds
are interlocked through a limit switch on the turn-
table that senses the main boom position. When the
main boom is raised approximately 8
′
(2.4 m) the
machine should travel in low speed only. To operate
in high speed the booms must be stowed.
Emergency Stop
Push the emergency stop button in to turn off the engine.
The upper control functions should not operate with the
emergency stop in this position.
Emergency Power
Pull the emergency stop button up and place the anti-
restart master switch in the on position.
Hold the engine/emergency power switch in the emer-
gency power position and step on the platform foot switch
to operate the aerial platform from the upper controls us-
ing the emergency power system.
Engine/Emergency
Power
Drive
Range
Boom Extend/Retract
Engine
Throttle
Platform
Level
Platform
Rotate
Jib
Boom Speed
Boom Joystick
Drive Joystick