Test The Primary Boom Angle Sensor - Genie ZX-135/70 Service Manual

August 2014
B-19
Test the Primary Boom Angle
Sensor
Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
A properly functioning primary boom angle sensor
is essential to safe machine operation. The ECM at
the ground controls (TCON) monitors the position
and angle of the primary boom using the signal
from the primary boom angle sensor. The primary
boom angle sensor signal is used to control the
ramping of the primary boom, limiting the speed of
the primary boom to 2.3 feet / 0.7 meters per
second.
Note: Perform this procedure with the machine on
a firm, level surface and in the stowed position with
the axles extended.
Note: Use the following chart to identify the
description of each LCD screen control button
used in this procedure.
Plus Minus
1 Turn the key switch to ground controls and
pull out the red Emergency Stop button to the
on position at both ground and platform
controls.
Part No. 218700
Previous Enter
ZX-135/70
Checklist B Procedures
2 Start the engine from the ground controls.
3 Press the enter or previous button on the
LCD screen until PRIMARY BOOM ANGLE
TO GRAVITY DEGREES is displayed.
4 Raise the primary boom while watching the
display screen.
5 Continue to raise the primary boom until it
stops at approximately 58°.
Tip-over hazard. If the boom
does not stop at approximately
58°, release the function enable
button immediately and lower
the primary boom. Contact
Genie Product Support. Failure
to lower the boom could cause
the machine to tip over resulting
in death or serious injury.
Service Manual
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