OPERATING CONTROLS AND PROCEDURES GRT8100 OPERATOR MANUAL
3-12 Published 3-25-2020, Control # 595-10
• RCL Lockout LED is flashing
• Working range limiter (WRL) indicator is on
• Carrier avoidance indicator is on
• -29°C temperature limiter indicator is on
If the RCL has not been programmed and the limit bypass
switch is turned counterclockwise and released, the swing
left/right, boom up/down, hoist up/down, and telescope
extend/retract functions operate at normal speeds when
actuated. The following indicators illuminate to indicate the
limiters are bypassed:
• Bypass 1 Pressed indicator is on (only when in the
counterclockwise position)
• Bypass 1 Active indicator is on
• RCL Bypass Status indicator is on
• RCL Lockout LED is flashing
• Working range limiter (WRL) indicator is on
• Carrier avoidance indicator is on
• -29°C temperature limiter indicator is on
All craning functions locked out are bypassed until one of the
following occurs:
• Limit Bypass Switch is again turned to the
counterclockwise position and released while the
joysticks are in the neutral position
• Joysticks are in neutral position for 10 seconds
Emergency Stop Switch
The crane Emergency Stop Switch (20) Figure 3-6 is located
on the cab right console and is used to shut down the crane’s
engine. Push the red button in to shut down the engine,
which illuminates the Emergency Stop icon on the CCS
operator display. Rotate and pull out knob to resume normal
operation.
Level Indicator
The Level Indicator (21) Figure 3-6 is located on the right
side of the cab by the Emergency Stop Switch. The indicator
provides the operator with a visual aid in determining the
levelness of the crane.
Deadman Switches
(Optional) (Dual Axis
Control Levers only)
Deadman Switches (22) Figure 3-6 are located on the front
of both control levers. Either of these switches can be used
instead of the seat switch to keep crane functions active.
Hoist High Speed Toggle Switches
The Hoist High Speed Toggle Switches (23) (Figure 3-6) are
thumb operated two-position center spring return switches.
Push and hold switch closest to the operator to change hoist
speed to high – release switch to return hoist speed to
normal. Push and release switch farthest from the operator
to change hoist speed to high – push and release switch
again to return hoist speed to normal.
Horn Button
The Horn Button (24) (Figure 3-6) is located on the upper
front of the right control lever. The button sounds the horn
during crane operations.
Free Swing Button
The Free Swing Button (25) (Figure 3-6) is located on the
upper front of the left control lever. The Free Swing Button
releases the Swing Brake and allows the boom to be
centered over the load.
Cab Door Release Lever
Use the Cab Door Release Lever (26) (Figure 3-6) to open
and close the cab door from inside the cab.
Hoist Rotation Indicators (Not Shown)
Hoist Rotation Indicators (27) (Figure 3-6) for auxiliary and
main hoists are located on top of each hoist control lever (1,
2) (Figure 3-6). Each indicator is electronically driven by an
input signal from a sensor attached to its related hoist and an
output signal from a control module. Each hoist control lever
(1, 2) pulses when its hoist is running so the operator’s
thumb can sense it.
Seat Switch (Not Shown)
This switch (28) (Figure 3-6) is located within the seat. An
operator must be sitting in the seat, enabling the switch,
before any crane functions can be activated.
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