How To Perform A Zero Load Cell Calibration - Genie ZX-135/70 Service And Repair Manual

Service and Repair Manual
Platform Components
29 Add an additional test weight equal to 5% of
the rated capacity onto the calibration weight
to overload the platform.
Result: The alarm should be sounding. The
platform overload indicator light should be
flashing at the platform controls and platform
overload should be displayed on the LCD
screen at the ground controls. The engine
should shut down.
Note: There may be a 2 second delay before the
overload indicator lights flash and the alarm
sounds.
30 Test all machine functions from the ground
controls.
Result: All ground control functions should not
operate. The engine should not start or run.
There should be limited APU functionality. The
primary boom up/extend or jib extend should
not operate.
Remove the test weight and calibration weight
from the platform.
36
How to Per form a Z ero Load C ell C alibration
How to Perform a Zero Load Cell
Calibration
Perform this procedure when the required weight
for full load calibration is not available. This
procedure will re-calibrate the zero load point
without effecting a previous full load calibration.
The platform load capacity will be reduced until a
full load calibration has been performed. A full load
calibration is required for rated load performance.
Note: Perform this procedure with the machine on
a firm, level surface.
1 Fully retract the boom and jib boom. Level the
platform.
2 Remove all equipment or tools from the
platform. Remove the welder if equipped.
3 Push in the ground controls red Emergency
Stop button to the off position.
4 Turn the key switch to ground controls.
5 Press and hold the enter button on the ground
control panel while pulling out the ground
controls red Emergency Stop button to the on
position. Hold the enter button for
approximately 5 seconds and then release it.
6 Enter sensor calibration mode by pressing the
buttons at the ground controls in the following
sequence: (plus)(enter)(enter)(plus).
7 Press the enter or previous button on the
LCD screen until CALIBRATE LOAD CELL
ZERO is displayed.
8 Press the plus button to select YES, then
press the enter button to accept.
9 Press the enter or previous button on the
LCD screen until EXIT is displayed.
10 Press the plus button to select YES, then
press the enter button to accept.
11 Wait approximately 20 seconds and turn the
machine off by pressing the red Emergency
Stop button in.
ZX®-135/70
April 2018
Part No. 1279835GT