Product Manual

Fifth Edition • Third Printing Operator's Manual
Inspections
Part No. 133571 GR-12 • GR-15 • GR-20 27
58 Slowly move the control handle in the direction
indicated by the yellow arrow on the control
panel until the machine begins to move, then
return the control handle to the center position.
Result: The machine should move in the
direction that the yellow arrow points on the
control panel, then come to an abrupt stop
when the control handle is returned to the
center position.
Note: The brakes must be able to hold the
machine on any slope it is able to climb.
Test the Tilt Sensor Operation
Note: Perform this test from the ground with the
platform controller. Do not stand in the platform.
59 Fully lower the platform.
60 Place a 2x4 or similar piece of wood under
both wheels on one side and drive the
machine up onto them.
61 Raise the platform approximately 7 ft / 2.1 m
from the ground.
Result: The platform should stop and the tilt
alarm will sound at 180 beeps per minute. The
platform controls LED readout should display
LL and the ground controls LCD should display
LL: Machine Tilted.
62 Press the drive function button (if
equipped).
63 Press and hold the function enable switch on
the control handle.
64 Move the control handle in the direction
indicated by the blue arrow, then move the
control handle in the direction indicated by the
yellow arrow.
Result: The drive function should not work in
either direction.
65 Lower the platform and remove both pieces of
wood.
Test Elevated Drive Speed
66 Raise the platform approximately 4 ft / 1.2 m
from the ground.
67 Press the drive function button (if
equipped).
68 Press and hold the function enable switch on
the control handle. Slowly move the control
handle to full drive position.
Result: The maximum achievable drive speed
with the platform raised should not exceed
0.72 ft / 22 cm per second.
If the drive speed with the platform raised exceeds
0.72 ft / 22 cm per second, immediately tag and
remove the machine from service.