February 2022
Service Manual
Checklist B Procedures
Part No. 1314708GT
GRC
™
19
B-4
Inspect the Voltage Inverter
(if equipped)
Genie specifications require that this procedure be
performed every 250 hours or quarterly, whichever
comes first.
Perform this procedure more often if dusty
conditions exist.
1 Inspect the inverter plug and pigtail for
damage or excessive insulation wear.
Replace as required.
2 Turn the key switch to ground control and pull
out the red Emergency Stop button to the on
position at both ground and platform controls.
1 right fault LED
2 left fault LED
3 25V LED
4 21V LED
3 Connect an appropriate power tool to the
inverter. Activate the tool.
Result: The power tool should operate. There
may be a brief (0.5 second) delay if the power
tool has not been used in the previous
10 minutes.
If the left fault LED (REV_POL) is illuminated,
the inverter is connected to batteries with the
incorrect polarity. Correct the polarity issue
with the red wire to battery positive and the
black wire to battery negative. The inverter
will then operate correctly and begin
supplying AC power.
If the right fault LED (123) blinks one time, the
power draw is too high. The tool being used
requires too much power to operate or is
being used at or near the limit of the inverter
for an extended period of time. Reduce the
power draw. The inverter will then operate
correctly and begin supplying AC power.
If the right fault LED (123) blinks two times,
the Ground Fault Interrupt (GFI) has been
activated. A short circuit or partial short exists
between the AC hot and ground in the tool or
outlet. Check the tool for burnt, chafed,
corroded and loose wires, and inspect the tool
for internal moisture. Correct the short circuit
or moisture issue OR inspect the wiring in the
power-to-platform box. The inverter will then
operate correctly and begin supplying AC
power.
If right fault LED (123) blinks three times, the
inverter is overheated. Allow the inverter to
cool. The inverter will then operate correctly
and begin supplying AC power.
If the battery 25 volt fault LED (25V) blinks
one time, the battery voltage is over 30V.
Operate the machine to lower the voltage
level. The inverter will then operate correctly
and begin supplying AC power.
If the battery 21 volt fault LED (21V) blinks
one time, the battery voltage is less than 20V
DC. The inverter will continue to operate until
the battery voltage falls to 17.8V DC.
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: ......
