Genie Z-34/22IC, Service Manual

Page: 81 / 185

Part No. 128267 Z-34/22 IC 4 - 9
July 2007 Section 4 • Repair Procedures
REV A PLATFORM COMPONENTS
2-3
Platform Overload System
How to Calibrate the Platform
Overload System (if equipped)
Calibration of the platform overload system is
essential to safe machine operation. Continued
use of an improperly calibrated platform overload
system could result in the system failing to sense
an overloaded platform. The stability of the
machine is compromised and it could tip over.
1 Level the platform.
2 Determine the maximum platform capacity.
Refer to the machine serial plate.
3 Using a suitable lifting device, place an
appropriate test weight equal to that of the
maximum platform capacity at the center of the
platform floor.
Determine the limit switch trigger point:
4 Gently move the platform up and down by hand,
so it bounces approximately 1 to 2 inches /
2.5 to 5 cm. Allow the platform to settle.
Result: The overload indicator light and the
alarm is on. Slowly tighten the load spring
adjustment nut by turning it clockwise just until
the overload indicator light and alarm turns off.
Note: The platform will need to be moved up and
down and allowed to settle between adjustments.
Note: There may be an approximate 2 second
delay before the overload indicator light turns on
and the alarm sounds.
Result: The overload indicator light and
alarm is off. Slowly loosen the load spring
adjustment nut by turning it counterclockwise
just until the overload indicator light and alarm
turn on.
Note: There may be an approximate 2 second
delay before the overload indicator light turns on
and the alarm sounds.
Note: The platform will need to be moved up and
down and allowed to settle between adjustments.