Grove Published 3-22-2021, Control # 702-02 5-29
GRT8120 OPERATOR MANUAL SET-UP AND INSTALLATION
If a screen shows with an exclamation point in the middle of
the screen (Figure 5-32), the system has identified that the
boom extension fly section is in the stowed position but not
secured by Pin 1 while the base section is either in the
intermediate or fully deployed position. If the boom extension
fly section is not properly secured, it can fall from the crane
resulting in Death or Serious Injury.
If either of these screens show, do the following:
1. Immediately STOP all activities.
2. Alert anyone near the crane to move away from the
boom extension.
3. Determine if the extension is properly secured and
supported at all required locations, and then determine if
the issue causing the error can be resolved safely before
continuing.
If additional assistance is needed, contact your Grove
Distributor or Manitowoc Crane Care for help.
DANGER
Falling Boom Extension Hazard!
If the fly section remains stowed on the side of the main
boom when erecting or stowing the boom extension base
section, the fly section must be secured by Pin 1. If the fly
section is not secured properly, it can fall from the crane
resulting in Death or Serious Injury.
Always make sure the fly section is secured by Pin when
fly section remains stowed on the side of the main boom.
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