Service Manual
February 2022
Checklist B Procedures
18
GRC
™
Part No. 1314708GT
B-2
Inspect the Electrical Wiring
Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
Maintaining electrical wiring in good condition is
essential to safe operation and good machine
performance. Failure to find and replace burnt,
chafed, corroded or pinched wires could result in
unsafe operating conditions and may cause
component damage.
Electrocution/burn hazard.
Contact with electrically charged
circuits could result in death or
serious injury. Remove all rings,
watches and other jewelry.
1 Inspect the underside of the chassis for
damaged or missing ground straps.
2 Inspect the following areas for burnt, chafed,
corroded pinched and loose wires:
•
All wire harness connectors to ground
control box
•
Ground control panel
•
Hydraulic power unit
•
All wire harness connectors to platform
control box
•
Platform controls
•
Power to platform wiring
•
Harness connections
•
Hydraulic manifold wiring
•
Contactor
•
Limit switches
3 Inspect for a lite, even coating of dielectric
grease on all harness connections.
Note: Do not apply excessive amounts of dielectric
grease to harness connectors, pins or sockets.
B-3
Inspect the Electrical Contactor
Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
Maintaining the electrical contactor in good
condition is essential to safe machine
performance. Failure to locate a worn or damaged
contactor could result in unsafe operating
conditions and may cause component damage.
Electrocution/burn hazard.
Contact with electrically charged
circuits could result in death or
serious injury. Remove all rings,
watches and other jewelry.
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 At the non-steer end of the machine, open the
cover to access the electrical tray.
3 Disconnect the battery pack from the
machine.
4 Locate the electrical contactor mounted on
the fuse bracket.
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.
Summary of Contents for Genie GRC-12
Page 113: ...February 2022 Service Manual 101 Electrical Schematic GRC Options...
Page 115: ...February 2022 Service Manual 103 Electrical Schematic GRC from GRC11 1000 to GRC11 1078...
Page 118: ...Service Manual February 2022 106 Electrical Schematic GRC from GRC11 1000 to GRC11 1078...
Page 119: ...February 2022 Service Manual 107 Electrical Schematic GRC from GRC11 1079 to GRC14 1780...
Page 122: ...Service Manual February 2022 110 Electrical Schematic GRC from GRC11 1079 to GRC14 1780...
Page 123: ...February 2022 Service Manual 111 Electrical Schematic GRC from GRC14 1781 to GRC15 2343...
Page 126: ...Service Manual February 2022 114 Electrical Schematic GRC from GRC15 2344 to GRC16P 2481...
Page 127: ...February 2022 Service Manual 115 Electrical Schematic GRC from GRC16P 2482 to GRC16P 2562...
Page 130: ...Service Manual February 2022 118 Electrical Schematic GRC from GRC16P 2563 to GRCP 5999...
Page 131: ...February 2022 Service Manual 119 Hydraulic Schematic GRC from GRC11 1000 to GRC12 1168...
Page 135: ......