4 - 4
Genie Z-30/20
Part No. 43063
Service Manual - Third Edition
Section 4 - Scheduled Maintenance Procedures
TABLE
A
PROCEDURES
A-6
Test the Platform and
Ground Controls
Testing the machine functions and the Emergency
Stop buttons for malfunctions is essential for safe
machine operation. An unsafe working condition
exists if any function fails to operate properly or
either Emergency Stop button and Emergency
Stop Switch fail to stop all the machine functions.
Each function should activate, operate smoothly
and be free of hesitation, jerking and unusual
noise.
1 Turn the key switch to ground control and lift
the red Emergency Stop switch cover and
move the toggle switch to the
ON
position.
2 Do not hold the function enable switch to either
side. Attempt to activate each boom and
platform function toggle switch.
Result: All boom and platform functions should
not operate.
3 Hold the function enable switch in either
direction and activate each boom and platform
function toggle switch.
Result: All boom and platform functions should
operate through a full cycle. Descent alarm (if
equipped) should sound while boom is
lowering.
4 Push in the Emergency Stop Switch to the
OFF
position.
Result: No function should operate, the
machine should stop.
5 Turn the key switch to platform control and lift
the red Emergency Stop switch cover and
move the toggle switch to the
ON
position. Pull
out the Emergency Stop Button to the
ON
position at the platform controls.
6 Operate each machine function through a
partial cycle.
Result: All machine functions should operate
smoothly.
7 Push in the Emergency Stop button to the
OFF
position.
Result: No function should operate, the
machine should stop.
As a safety feature, selecting
and operating the ground
controls will override the
platform controls, including
the Emergency Stop button.
A-7
Test the Platform Rotation
Detection of platform rotation malfunctions is
essential for safe machine operation. The platform
rotator is operated by manually turning the hand
crank in either a clockwise or counterclockwise
direction.
1 Turn the hand crank at the platform in the
clockwise direction.
Result: The platform should rotate to the right
and operate smoothly without any hesitation or
binding.
2 Turn the hand crank at the platform in the
counterclockwise direction.
Result: The platform should rotate to the left
and operate smoothly without any hesitation or
binding.
