System Function Inspection
S3219E/S3220E/S3226E/S4726E/S4732E – 1500842
11
System Function Inspection
Refer to “Controls and Indicators” on page 8 for the loca-
tions of various controls and indicators.
Warning
STAND CLEAR of the work platform while performing
the following checks.
Before operating the machine, survey the work area
for surface hazards such as holes, drop-offs, bumps
and debris.
Check in ALL directions, including above the work
platform, for obstructions and electrical conductors.
1. Move the machine, if necessary, to an unobstructed
area to allow for full elevation.
2. Twist the Lower Control Emergency Stop Switch to
the ON position.
3. Twist the Upper Control Emergency Stop Switch to
the ON position.
4. Visually inspect the elevating assembly, lift cylinder,
and hoses for cracked welds and structural damage,
loose hardware, hydraulic leaks, loose wire connec-
tions, and erratic operation. Check for missing or
loose parts.
5. Hold the ground operation switch downward. Test
each machine function from the lower control station
(refer to Figure 2).
6. Test the emergency lowering system for proper op-
eration.
7. Push the Lower Control Emergency Stop Button to
check for proper operation. All machine functions
should be disabled. Twist the Lower Control Emer-
gency Stop Button outward to resume.
8. Enter the platform and close the gate.
9. Check that the route is clear of obstacles (persons,
obstructions, debris), is level, and is capable of sup-
porting the wheel loads.
10. Test each machine function from the upper control
station by engaging the interlock and operating the
function controls (refer to Figure 3).
11. Push the Upper Control Emergency Stop Button to
check for proper operation. All machine functions
should be disabled. Twist the Upper Control Emer-
gency Stop Button to resume.
