Test The Safety Envelope Limit Switches - Genie ZX-135/70 Service Manual

August 2014
B-18
Test the Safety Envelope Limit
Switches
Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
Testing the machine envelope safety limit switches
is critical to safe machine operation. If the boom is
allowed to operate when a safety switch is not
functioning correctly, the machine stability could be
compromised and may tip over.
Note: Perform this procedure with the boom in the
stowed position.
Note: Perform this procedure with the axles
extended.
Note: Two people will be required to perform this
procedure.
Note: Use the following chart to identify the
description of each LCD screen control button
used in this procedure.
Plus Minus
Part No. 218700
Previous Enter
ZX-135/70
Checklist B Procedures
Secondary Boom #1 Retracted Safety Limit
Switch, LSS1RS
1 Working at the platform end of the turntable,
support and secure the lower turntable riser
end cover to a suitable lifting device.
2 Remove the lower cover retaining fasteners
and remove the lower cover from turntable.
Crushing hazard. The turntable
riser lower cover could become
unbalanced and fall when
removed from the turntable if
not properly supported and
secured to the lifting device.
3 Support and secure the upper turntable riser
end cover to a suitable lifting device.
4 Remove the upper cover retaining fasteners
and remove the upper cover from turntable.
Crushing hazard. The turntable
riser upper cover could become
unbalanced and fall when
removed from the turntable if
not properly supported and
secured to the lifting device.
5 Locate the secondary boom #1 retracted
safety limit switch (LSS1RS) inside the
secondary boom tube.
Note: The secondary boom #1 retracted safety
limit switch (LSS1RS) is attached to the number
1 boom tube and can easily be identified by the
blue and red tie wraps attached to the limit switch
cable.
Service Manual
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