Telescoping Main Boom In Horizontal Position; Telescoping With Rigged Boom Extension - Manitowoc Grove RT9150E Operator's Manual

RT9150E OPERATOR MANUAL
2. Press the button (1) once, the symbol (1) flashes
indicating that lock telescopic section is selected.
Locking the Telescopic Section
Refer to Figure 3-175.
Move the right control lever until locking is complete:
• The section locking pins (3) extend at the locking point:
Yellow: Intermediate position
Green: Locked
• The notch in the section locking pins engage the
telescopic section is set down.
In the locked position:
• The symbol (1) is yellow,
• The symbol (2) is grey.
NOTE: Ensure the telescopic section is locked and the
locking pins engaged with the section, the symbol
*
must be yellow.
This prevents the load from exerting pressure on
the telescope cylinder and allows the load to be
enabled for fixed lengths.
Grove
OPERATING CONTROLS AND PROCEDURES
Telescoping Main Boom in Horizontal
Position
Position the main boom to the horizontal position as
described in Lowering the Boom to a Horizontal Position,
page 3-131.
The RCL automatically switches to the corresponding rigging
table. It specifies the maximum permissible telescoping
where extending is switched off, refer to the shutdown values
in the Load Chart.
1. Set down the load.
2. Extend the main boom only until the RCL switches off
the extension procedure.
NOTE:

Telescoping with Rigged Boom Extension

FIGURE 3-175
Do not rotate the superstructure while telescoping the
main boom with a rigged boom extension.
Damage to the boom may occur.
The telescoping of the main boom with a rigged boom
extension is monitored by the RCL. Telescoping will only be
enabled if the main boom is raised to a certain angle and a
maximum permissible load is not exceeded.
The required angle (between 70° and 78°) depends on the
rigging mode of the crane.
You will find the required main boom angle and the maximum
permissible load (weight of the hook block) in the Load
Chart.
If the main boom angle is too small for telescoping with the
rigged boom extension, the RCL shows the corresponding
error message.
Extending/Retracting the Boom
Check the load chart for the maximum load at a given
radius, boom angle, and length before extending the
boom with a load.
Death or serious injury could result from the crane tipping
over or being crushed by moving machinery.
Published 2-23-2017, Control # 644-00
If you continue to extend the main boom after a
RCL shutdown, you may enter ranges in which you
can neither perform retraction operations nor raise
the boom.
CAUTION
Boom Damage Hazard!
DANGER
Crushing and Hazard!
3
3-147