Genie Z-30/20N Service And Repair Manual page 24

Service and Repair Manual
Platform Controls
3 Locate the diode between the black/red wire
from the boom function speed controller and
the white/red wire. Disconnect the white/red
wire from the diode on the black/red wire.
4 Connect the negative lead from a multimeter
set to measure amperage to the wire
connector of the white/red wire. Connect the
positive lead of the multimeter to the diode on
the black/red wire.
5 Turn the boom function speed controller to the
creep position.
6 Set the threshold: Press down the foot switch
and move the primary boom toggle switch to
the up position. Adjust the amperage to
0.28A. Turn the threshold trimpot adjustment
screw clockwise to increase the amperage or
counterclockwise to decrease the amperage.
7 Turn the boom function speed controller to the
9 position.
8 Set the max out: Press down the foot switch
and move the primary boom toggle switch to
the down position. Adjust the amperage to
0.65A. Turn the max out trimpot adjustment
screw clockwise to increase the amperage or
counterclockwise to decrease the amperage.
9 Start a timer and simultaneously press down
the foot switch and move the primary boom
toggle switch in the down direction. Note how
long it takes to reach 0.65A.
14 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N
10 Set the ramp rate: Turn the ramp rate trimpot
to obtain a 2 second delay from 0 to 0.65A.
Turn the trimpot clockwise to increase the
time or counterclockwise to decrease the
time.
11 Disconnect the leads from the multimeter and
connect the white/red wire to the diode on the
black/red wire.
Boom function speed controller specifications
Threshold
(controller turned to creep)
Max out
(controller turned to 9)
Ramp rate
September 2015
0.28A
0.65A
2 seconds
Part No. 1268498