4.12 Skyguard Operation; 4.13 Boom Synchronizing Procedure - JLG E450A Operation And Safety Manual

4.12 SKYGUARD OPERATION

Skyguard is used to provide enhanced control panel protection.
When the SkyGuard sensor is activated, functions that were in
use at the time of actuation will reverse or cutout. The table
below outlines these functions.
Table 4-1. Skyguard Function Table
Main Main Drive
Swing
Lift Tele Forward
R C/R* R R
R = Indicates Reversal is Activated
C = Indicates Cutout is Activated
I = Input is Ignored
Note: When Soft Touch is enabled with SkyGuard all functions are cut out only.
* Reversal only applies to Main Tele Out. Main Tele In would be cut out
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Drive Platform Platform
Reverse Level Rotate
I R R C C

4.13 BOOM SYNCHRONIZING PROCEDURE

NOTE: If the Lower Boom assembly does not fully lower:
1. Remove all personnel from the platform.
2. Pull the red knob located beside the main control valve.
3. From Ground Control, activate the lift control switch, raise
Lower Boom 1.8 m (6 feet).
Jib
Lift
4. After raising Lower Boom, release the red knob.
C
5. Activate Lower Boom Down, fully lower boom.
6. Repeat step 1 thru 5 if necessary.
– JLG Lift –
SECTION 4 - MACHINE OPERATION
4-13