Test The Platform Self-Leveling - Genie Z80/60 Service Manual

Section 3 • Scheduled Maintenance Procedures
CHECKLIST B PROCEDURES
B-11

Test the Platform Self-leveling

Automatic platform self-leveling throughout
the full cycle of primary boom raising and lowering
is essential for safe machine operation. The
platform is maintained level by the communication
between the platform level sensor and the
turntable level sensor. If the platform becomes out
of level, the computer at the ground controls will
open the appropriate solenoid valve(s) at the
platform manifold to maintain a level platform.
A platform self-leveling failure creates an unsafe
working condition for platform and ground
personnel.
1 Start the engine from the ground controls.
2 Press and hold a function enable/speed select
button and fully retract the primary boom.
3 Push one of the LCD
screen buttons shown until
platform angle is
displayed.
4 Press and hold a function enable/speed select
button and adjust the platform to zero degrees
using the platform level up/down buttons.
3 - 28
5 Push and hold a function enable/speed select
button and fully raise the primary boom while
observing the platform angle shown on the LCD
display.
Result: The platform should remain level at
all times to within ±2 degrees.
Note: If the platform becomes out of level, the tilt
alarm will sound and the Platform Not Level
Indicator will flash at the ground controls. The
platform level up/down buttons will only work in the
direction that will level the platform. Level the
platform until the indicator light turns off.
6 Push and hold a function enable/speed select
button and fully lower the primary boom.
Result: The platform should remain level at
all times to within ±2 degrees.
Note: If the platform becomes out of level, the tilt
alarm will sound and the Platform Not Level
Indicator will flash at the ground controls. The
platform level up/down buttons will only work in the
direction that will level the platform. Level the
platform until the indicator light turns off.
Z-80/60
June 2011
REV G
Part No. 88619