Genie Z-45/22 Service Manual page 141

Section 7 - Repair Procedures
PLATFORM CONTROLS
6 Set the threshold: Press down the foot switch,
then slowly move the control handle off center
until the moment a voltage reading appears.
Adjust the voltage to 2.94V DC. Turn the
threshold trimpot adjustment screw clockwise
to increase the voltage or counterclockwise to
decrease the voltage.
7 Set the max-out: Press down the foot switch,
then move the control handle all the way to the
extend position. Adjust the voltage to
7.00V DC. Turn the max-out trimpot
adjustment screw clockwise to increase the
voltage or counterclockwise to decrease the
voltage.
8 Set the dual (lo) range: Press down the foot
switch then move the control handle all the way
to the retract position. Adjust the voltage to
7.00V DC. Turn the dual range trimpot
adjustment screw clockwise to increase the
voltage or counterclockwise to decrease the
voltage.
Engine should be at normal
operating temperature.
9 Start the engine and move the engine speed
control switch to foot switch activated high idle
(rabbit and foot switch symbol). Raise the
primary boom until it is level. Fully retract the
primary boom.
10 Start a timer and record how long it takes for
the primary boom to reach full extension .
Adjust the max-out trimpot to achieve a 29 to
33 second cycle time.
11 Start a timer and record how long it takes for
the primary boom to fully retract . Adjust the
dual range trimpot to achieve a 22 to 26
second cycle time.
7 - 4
Specifications - Primary Boom Extend/Retract
Function
Threshold
Primary boom extend -
Max-out time
Primary boom retract -
Dual Range time
Secondary Boom Up/Down
Controller Adjustments
1 Check the battery condition with a volt meter.
The reading should be 12V DC or more to
accurately adjust the controller.
2 Turn the keyswitch to platform control and pull
the Emergency Stop button to the on position
at both the ground and platform controls. Do
not start the engine.
3 Open the platform control box lid and locate the
secondary boom up/down controller.
a b
Genie Z-45/22
Service Manual - First Edition
2.50V DC
5.01V DC
23-27 seconds
4.05V DC
23-27 seconds
c d e f g h
a dual (lo) adjustable trimpot
b ramp rate adjustable trimpot
c terminal "R" - activates max-out range
d terminal unused
e terminal "X" auxiliary
f terminal "-" - ground
g terminal "+" - battery, positive
h terminal "A" - proportional output
i threshold adjustable trimpot
j max-out adjustable trimpot
Part No. 29487
i j