Rated Capacity Limiter (Rcl) Emergency Override Switch And Indicator (Ce Certified Cranes); Rated Capacity Limiter (Rcl) Internal Light Bar (Optional); Strobe Light Or Beacon (Optional) (Not Shown); Backup Alarm (Not Shown) - Manitowoc Grove RT765E-2 Operator's Manual

RT765E-2 OPERATOR MANUAL
7649-9
Figure 3-13 Item Numbers
Item
1 Fuse Panel
2 Buzzer
Rated Capacity Limiter (RCL) Emergency
3
Override Switch
Rated Capacity Limiter (RCL) Emergency
Override Switch and Indicator (CE Certified
Cranes)
WARNING
Loss of RCL Monitoring Hazard!
The RCL Emergency Override Switch is to be used in
emergency situations only.
Do not operate the crane with the RCL overridden during
normal operations.
The RCL system, when programmed accurately, will lockout
the three craning functions—boom down, telescope extend,
and hoist up—when a lift is attempted at or above the crane's
capacity or when a two-block condition exists. Locking out
these three functions prevents the overload or two-block
condition from worsening.
The RCL emergency override switch is located inside a key-
locked single-door enclosure (1, Figure 3-14) that is
attached to the outside rear of the operator's cab. The switch
is a two-position momentary rocker switch with integral
indicator that, when actuated, will override and prevent the
RCL, for a period of 30 minutes, from locking out the three
craning functions (boom down, telescope extend, and hoist
up) should an overload or two-block condition occur.
Grove
1
FIGURE 3-13
Description
Published 4-09-2021, Control # 364-11
OPERATING CONTROLS AND PROCEDURES
Overriding the RCL with this switch should only be done in
the case of an emergency or when servicing the boom.
The indicator in the override switch will illuminate red and the
RCL and A2B override indicators on the RCL display will
flash to indicate the switch has been activated. Upon
activation, all craning function movements are reduced to
2
15% of their normal maximum speeds.
3
The RCL override function is automatically cancelled after 30
minutes. The RCL override function can also be cancelled by
the operator by either pressing the RCL emergency override
switch a second time, by turning off the engine, or by turning
the crane function power switch off.
Refer to the RCL Operator Manual for more information.
7649-36
Rated Capacity Limiter (RCL) Internal Light
Bar (Optional)
The Rated Capacity Limiter (RCL) Internal Light Bar is
located on the upper left hand corner of the crane cab. The
RCL is an operational aid that warns a crane operator of
approaching overload conditions and over hoist conditions
that could cause damage to equipment and personnel.
Strobe Light or Beacon (Optional) (Not
Shown)
The strobe light or beacon is on the roof of the cab. It is on
when the ignition switch is on.

Backup Alarm (Not Shown)

The backup alarm is an audio system used to warn
personnel outside the crane when the crane is backing up.
The alarm system is electrical and consists of the backup
alarm and its associated wiring. The alarm is connected to
the electrical wiring for the transmission reverse solenoids. It
is activated when the transmission shifter is in the reverse
1
3
FIGURE 3-14
3-19