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Operator's Manual
Third Edition • Second Printing
Part No. 97779 GR-12 • GR-15 • GR-20 17
1 Select a test area that is firm, level and free of
obstruction.
2 Be sure the battery pack is connected.
At the Ground Controls
3 Pull out the platform and ground red Emergency
Stop buttons to the on position.
4 Turn the key switch to ground control.
5 Observe the diagnostic LED readout on the
platform controls.
Result: The LED should look
like the picture at right.
Test Emergency Stop
6 Push in the ground red Emergency Stop button
to the off position.
Result: No functions should operate.
7 Pull out the red Emergency Stop button to
the on position.
Test the Up/Down Functions
8 Activate the up function.
Result: The platform should raise.
9 Activate the down function.
Result: The platform should lower. The descent
alarm should sound while the platform is
lowering.
Test Manual Lowering
10 Activate the up function and raise the platform
approximately 60 cm.
11 Pull the manual lowering knob located at the
base of the machine below the charger.
Result: The platform should lower. The descent
alarm will not sound.
12 Turn the key switch to platform control.
FUNCTION TESTS
At the Platform Controls
Test Emergency Stop
13 Push in the platform red Emergency Stop button
to the off position.
Result: No functions should operate.
Test the Horn
14 Pull out the red Emergency Stop button to
the on position.
15 Push the horn button.
Result: The horn should sound.
Test the Function Enable Switch
16 Do not press the function enable switch on the
control handle.
17 Slowly move the control handle in the direction
indicated by the blue arrow, then in the direction
indicated by the yellow arrow.
Result: No functions should operate.
Test the Up/Down Functions
18 Press the lift function select
button.
19 Press and hold the function
enable switch on the control
handle.
20 Slowly move the control handle in the direction
indicated by the blue arrow.
Result: The platform should raise.
21 Release the control handle.
Result: The platform should stop raising.