Genie Z-45/22 Service Manual page 142

Service Manual - First Edition
4 Set the ramp rate: Turn the trimpot adjustment
screw clockwise 15 turns or until you hear a
click, then turn the screw counterclockwise
5 turns.
5 Connect the red lead(+) from a volt meter to
the "A" terminal on the controller PC board.
Connect the black lead(-) to ground.
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 2.50V 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
up position. Adjust the voltage to 5.01V DC.
Turn the max-out trimpot adjustment screw
clockwise to increase the voltage or
counterclockwise to decrease the voltage.
8 Set the dual range: Press down the foot switch,
then move the control handle all the way to the
down position. Adjust the voltage to 4.05V 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 1 inch (2.5cm) above the drive
limit switch.
10 Start a timer and record how long it takes for
the secondary boom to reach the full up
position. Adjust the max-out trimpot to achieve
a 23 to 27 second cycle time.
11 Start a timer and record how long it takes for
the secondary boom to lower into the full down
position. Adjust the dual range trimpot to
achieve a 23 to 27 second cycle time.
Part No. 29487
Specifications - Secondary Boom Up/Down
Function
Threshold
Secondary boom up -
Max-out time
Secondary boom down -
Dual Range time
Turntable Rotation 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 key switch 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
Section 7 - Repair Procedures
PLATFORM CONTROLS
2.94V DC
7.00V DC
29-33 seconds
7.00V DC
22-26 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
i j
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