Snorkel PUSH 10 PRO-sn01-000050+ANSI - Manual (Page 27)

Chapter 8 – Prestart Inspection
0120843-ANSI PUSH PRO 6,8,10 23
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. 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.
4. Pay close attention to welds in areas where changes
in cross section take place and near the attachment
points of highly loaded components.
Slide Blocks
To inspect the slide blocks:
1. Visually inspect the scissors arm slide blocks (refer
to Figure 8.11). They must be free to move without
obstruction. There is one slide block on each side of
the chassis.
Figure 8.11 – Front of Chassis
2. Raise the platform from the lower controls and visu-
ally inspect the slide blocks underneath the front of
the platform (refer to Figure 8.12). There is one slide
block on each side of the platform. The slide blocks
must be in good condition and free to move without
obstruction.
Warning
The potential for an accident increases when
safety devices do not function properly. Death or
serious injury can result from such accidents. Do
not alter, disable, or override any safety device.
Emergency Lowering System
Use the following procedure to test the emergency lower-
ing system:
Danger
Pinch points may exist between moving components.
Death or serious injury will result from becoming
trapped between components. Stand clear of mov-
ing components while test operating the machine.
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Immediately
push the emergency stop button inward to disable
the control system before using the emergency
lowering system in the event of an emergency.
1. Use the lower controls, fully raise the platform. Push
the emergency stop button inward.
2. Locate the emergency lowering control. The lower-
ing lever is at the rear of the aerial platform located
between the 1st and 2nd Scissors. (refer to Figure
8.10).
Figure 8.10 – Emergency Lowering Control
3. Make sure there is nothing in the way to obstruct the
platform when it lowers.
• Push downward on the lever to lower the
platform.
4. Make certain the lever/handle is fully released
and the emergency lowering valve is fully closed
before operating the aerial platform.
Emergency Lower Lever
Slide Block