Snorkel AB60J CE - Manual (Page 31)

Chapter 7 – Prestart Inspection
AB60J – 0182099EE 27
Note
When checking the turntable rotation function in the
clockwise direction, the turntable will rotate toward you.
Emergency Stop
Push the emergency stop button in to turn off the en-
gine. The lower control functions should not operate with
the emergency stop in this position.
Emergency Power
Place the battery disconnect switch, the emergency stop
button, and the master switch in the on position.
Hold the engine/emergency power switch in the emer-
gency power position and the ground operation switch
in the on position to operate the aerial platform from the
lower controls using the emergency power system.
Emergency Lowering
The riser and main booms can be lowered in an emer-
gency using their respective emergency lowering knobs.
The emergency lowering knobs are at the base end of
the lift cylinders.
Use the following procedure to test the emergency low-
ering system.
1. Use the lower controls to raise the main and riser
booms.
2. Turn the engine off.
A
Danger
Pinch points may exist between moving compo-
nents. Death or serious injury will result from be-
coming trapped between components. Stand clear
of moving components while test operating the ma-
chine.
3. Slowly turn the knob to open the bleed down valve
on the riser boom lift cylinder (refer to Figure 7.11).
The boom should slowly lower by gravity.
Figure 7.11 – Riser Boom
Emergency Lowering Knob
A
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
4. Turn the knob to close the cylinder bleed down valve.
5. Slowly turn the knob to open the bleed down valve
on the main boom lift cylinder (refer to Figure 7.12).
The boom should slowly lower by gravity.
Figure 7.12 – Main Boom
Emergency Lowering Knob
A
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
6. Turn the knob to close the cylinder bleed down valve.
Level Sensor
Use the following procedure to test the level sensor.
1. Position the aerial platform on a smooth, flat, level
surface.
2. Remove all persons and materials from the platform.
3. Start the engine and raise the main boom so it is off
of the switch roller at the rear of the turntable.
4. Open the rear door on the left side of the machine
to access the level sensor (refer to Figure 7.13).
Emergency
Lowering Knob
Emergency
Lowering Knob
Inside Turntable