Manitowoc Grove RT9150E Operator's Manual page 216

OPERATING CONTROLS AND PROCEDURES
Move the right control lever for telescoping.
If required, the section locking pins (2) will extend first.
The cylinder locking pins (3) will retract:
Yellow: Intermediate position,
Red: Unlocked.
In the unlocked position, the symbol (1) is yellow.
If the control lever is moved, the telescope cylinder moves
immediately.
If the symbol (1) (Figure 3-160) is still flashing after
approximately 10 seconds, this means that the locking pins
are under load.
Let go of the control lever.
The display (2) shows which direction you need to move the
cylinder to take the load off:
(A) Retract
(B) Extend.
CAUTION
Boom Damage Hazard!
Repeated attempts to extend and retract may cause
damage to the boom system.
NOTE: If removing the load does not cause unlocking, you
must lock the telescope cylinder and restart the
unlocking process, refer to Lock Telescope
Cylinder, page 3-142.
3-142
Extending/ Retracting the Telescope Cylinder
Operating the telescope cylinder (without telescopic section)
is required when the telescope cylinder needs to be moved
into a different telescopic section.
Prerequisites
Refer to Figure 3-161.
In order to extend/retract the telescope cylinder the following
conditions must be met:
• The telescoping mechanism must be on, symbol (3)
green
• The telescopic section must be locked, symbol (2) grey
• The telescope cylinder must be unlocked, symbol (1)
yellow.
Extend/Retract
Refer to Figure 3-162.
FIGURE 3-160
Move the control lever in the desired direction to extend or
retract the telescope cylinder (1).
The display (2) shows the currently extended length, e.g.
1,500 mm (4.92 ft).
Published 2-23-2017, Control # 644-00
RT9150E OPERATOR MANUAL
FIGURE 3-161
FIGURE 3-162