Inspect The Electrical Wiring; Inspect The Electrical Contactor - Genie TZ-34/20 Service Manual

January 2016
B-2

Inspect the Electrical Wiring

Maintaining electrical wiring in good condition is
essential to safe operation and good machine
performance. Failure to fi nd and replace burnt,
chafed, corroded or pinched wires could result
in unsafe operating conditions and may cause
component damage.
Electrocution hazard. Contact
with hot or live circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
1 Inspect the following areas for burnt, chafed,
corroded and loose wires:
• Turntable area
• Ground controls
• Power unit wiring
2 Turn the key switch to ground control and pull
out the red Emergency Stop button to the
on position at both the ground and platform
controls.
3 Raise the secondary boom until the platform is
approximately 10 feet / 3 m off the ground.
4 Inspect the boom storage area for burnt, chafed
and pinched cables.
5 Lower the boom to the stowed position and turn
the machine off.
6 Inspect the following areas for burnt, chafed,
corroded, pinched and loose wires:
• Boom to platform cable harness
• Primary and secondary booms
Part No. 825934
Section 3 • Scheduled Maintenance Procedures
B-3

Inspect the Electrical Contactor

Genie requires that this procedure be performed
every 250 hours or quarterly, whichever comes
fi rst.
Maintaining the electrical contactor in good
condition is essential to safe machine operation.
Failure to locate a worn or damaged contactor
could result in an unsafe working condition and
component damage.
1 At the ground controls, turn the key switch to
the off position and push in the red Emergency
Stop button to the off position.
2 Disconnect the batteries.
3 Remove the hydraulic power unit cover.
4 Locate the electrical contactor mounted by the
hydraulic power unit.
5 Visually inspect the contact points of the
contactor for the following items:
• Excessive burns
• Excessive arcs
• Excessive pitting
Note: Replace the contactor if any damage is
found.
Genie TZ-34/20
CHECKLIST B PROCEDURES
Electrocution/burn hazard.
Contact with hot or live circuits
could result in death or serious
injury. Remove all rings, watches
and other jewelry.
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