Snorkel S2545 - Manual (Page 29)

❑
Emergency Stop
Push the red emergency stop safety guard down
to turn off the electrical power. The lower control
functions should not operate with the emergency
stop in this position.
❑
Lowering Alarm
Raise the platform and then lower it to ensure
that the alarm sounds to warn personnel in the
area that the platform is lowering.
■ Pothole Protector Interlock
Perform this test using the lower controls.
1. Stow the aerial platform on a smooth, flat,
level concrete slab.
2. Remove all persons and materials from the
platform.
3. With the swing-out trays closed, check the
ground clearance under the pothole protector
skids (refer to Figure 8.12). Clearance should
be at least 3
3
4
″ on both sides of the aerial
platform.
Figure 8.12—Pothole Protector Skids
4. Raise the platform while watching movement
of the skids. The skids should lower to less
than 1
1
4
″ ground clearance when the platform
is raised approximately 24
″.
5. Fully lower the platform while watching
movement of the skids. The skids should
raise to their original position when the
platform is lowered to approximately 24
″.
6. Place a 1 1
2
″ thick board, such as a 2 x 4,
under the skid on the right side (refer to
Figure 8.13).
Figure 8.13—Pothole Protector Interlock Test
7. The board will prevent the skid from lowering
fully. Raise the platform while watching the
skid. When the skid contacts the board, the
platform should stop raising and an alarm
should sound at less than seven feet platform
floor height. The alarm should then sound
when the platform lift switch is activated. The
platform should not raise any farther.
8. Lower the platform. Place the board under
the skid on the left side.
9. Raise the platform while watching the skid.
When the skid contacts the board, the
platform should stop raising and an alarm
should sound at less than seven feet platform
floor height. The alarm should then sound
when the platform raise switch is activated.
The platform should not raise any farther.
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.
10. If the platform raise function is not disabled,
or the alarm does not sound remove the
aerial platform from service until the problem
is corrected.
S2545 – 0410002 page 8 - 5
Chapter 8. Prestart Inspection
DANGER