Ground Controls; Auxiliary Platform Lowering; Controller Adjustments (After Serial Number Gs9003-41522) - Genie GS-3390 Service Manual

July 2007
REV D
5-1

Auxiliary Platform Lowering

In the event of an engine failure, activating the
back-up manual lowering and manual lowering
enable switches will lower the platform when the
red Emergency Stop buttons are pulled out to the
on position at both the ground and platform
controls. The auxiliary down switches/buttons are
located at the ground control panel. There is no
adjustment required.
One 12V DC battery is used to start the engine,
power the auxiliary pump and the ECM. The
battery is located behind the ground control door
assembly.
Part No. 72863
5-2
Controller Adjustments
(after serial number GS9003-41522)
All machine function speeds are determined by the
percentage of total ECM voltage output. The
speeds of the following machine functions may be
adjusted to compensate for wear in the hydraulic
pump and drive motors.
· Stowed drive speed
· High torque drive speed
· Raised drive speed
· Platform lift speed
· Platform lower speed
· Steer speed
· Platform settling speed
For further information or assistance, consult the
Genie Industries Service Department.
Note: Select a test area that is firm, level and free
of obstructions.
How to
Determine the Revision Level
1 Turn the key switch to ground controls and pull
out the red Emergency Stop buttons to the on
position at both platform and ground controls.
Result: The revision level of the ECM will
appear in the LED display window.
GS-3390 • GS-4390 • GS-5390
Section 4 • Repair Procedures

Ground Controls

Tip-over hazard. Do not adjust the
lift and/or drive speed higher than
specified in this procedure. Setting
drive speed greater than
specifications could cause the
machine to tip over resulting in
death or serious injury.
Tip-over hazard. This procedure
must only be performed by a
trained service professional.
Attempting this procedure without
the necessary skills will result in
death or serious injury.
4 - 59