Snorkel S2770RT, Руководство оператора

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Chapter 7 – Prestart Inspection
22 S2770RT IS – 0102094
1. At the lower controls, pull the emergency stop but-
ton outward. Place the control selector in the lower
control position.
2. Start the engine.
3. Let the engine warm to operating temperature.
4. Press and hold the ground operation button.
A
Danger
Pinch points may exist between moving components.
Death or serious injury can result from becoming
trapped between components, buildings, structures,
or other obstacles. Make sure all personnel stand
clear of the aerial platform while performing the pre-
start inspection.
A
Warning
The potential for an accident increases when operat-
ing an aerial platform that is damaged or malfunction-
ing. Death or serious injury could result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
5. Test the operation of the platform raise and lower
buttons in both directions.
y
To raise the platform press and hold the platform
raise button.
y
To lower the platform press and hold the platform
lower button.
Emergency Stop
To test the emergency stop button from the lower con-
trols:
1. Push the emergency stop button (refer to Figure 7.8)
inward.
2. Test the lower control functions to insure they no
longer operate.
Manual Emergency Lowering Pump
The platform can be lowered in an emergency using the
emergency lowering pump. The emergency lowering
pump is behind the cowling door on the right side of the
machine.
Use the following procedure to test the emergency low-
ering system.
1. Use the lower controls to raise the platform a few
feet.
2. Turn the engine off.
Danger
Pinch points may exist between moving components.
Death or serious injury can result from becoming
trapped between components. Stand clear of moving
components while test operating the machine.
3. The pump handle is mounted next to the lower con-
trols. Insert the handle into the pump (refer to Figure
7.9).
Figure 7.9 – Manual Emergency Lowering Pump
4. Pull and hold the scissor lower knob outward while
pumping to lower the platform. Stop pumping and
release the knob to stop descent of the platform.
5. Place the pump handle back in its holder.
Structures
Visually inspect all weldments and related components.
It is important to inspect the fasteners that connect the
components.
Weldments
To inspect the weldments:
1. Visually inspect all weldments for abnormal wear,
abrasion, or deformation that could cause interfer-
ence between moving parts.
2. Inspect the welds on the structural components. Pay
particular attention to arm welds around pin bosses.
The area to be inspected should be clean and free
of dirt and grease.
3. Look for visible cracks in the welds and at the weld
to parent material joints. A bright light may be used
to provide adequate visibility of the inspection area.
Rollers and Slide Blocks
To inspect the rollers and slide blocks:
1. Visually inspect the scissors arm rollers at the front
of the platform (refer to Figure 7.10). They must be
free to move without obstruction. There is one roller
on each side of the platform.
Pump
Main Control
Valve Assembly
Brake
Release Knob
Scissor
Lower Knob