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Grove
Published 3-25-2020, Control # 643-04
3-9
GRT880 OPERATOR MANUAL
OPERATING CONTROLS AND PROCEDURES
3
Boom Lift/Main Hoist Joystick (Dual Axis)
The Boom Lift/Main Hoist Joystick (1) Figure 3-6 is located
on the right armrest. The controller, when pushed to the right
lowers the boom, or pushed left raises the boom.
When used for main hoist, the controller, when pushed
forward lowers the cable, or pulled back raises the cable.
Swing/Telescope or Swing/Auxiliary Hoist
Joystick (Dual Axis)
The Swing/Telescope or Swing/Auxiliary Hoist (Swing/Tele
or Swing/Aux) Joystick (2) Figure 3-6 is located on the end of
the left armrest. The lever controls swing and telescope
functions when crane is not equipped with an auxiliary hoist.
When equipped with an auxiliary hoist, the lever controls
swing and auxiliary hoist functions. Telescope functions are
controlled through a foot pedal.
If not equipped with an auxiliary hoist, positioning the lever to
the left or right actuates a control valve through hydraulic
pilot pressure to provide 360 degree continuous rotation in
the desired direction. Positioning the lever forward actuates
the control valve to telescope the boom out and pulling the
lever back actuates the boom to telescope in.
If equipped with an auxiliary hoist, positioning the lever
forward actuates the control valve to let out hoist cable and
pulling the lever back reels the cable in. Moving the lever in a
diagonal direction actuates the two functions simultaneously.
Main Hoist Enable Switch
The Main Hoist Enable Switch (3) Figure 3-6 is a momentary
switch that is located on the right armrest. Press once to
enable hoist; press again to disable hoist. Pressing the
switch twice rapidly enables hoist at high speed. Pressing
once and holding the switch for about 2 seconds also
enables high speed.
Boom Up Bypass Switch
The Boom Up Bypass Switch (4) Figure 3-6 is a momentary
two-position rocker switch that is located on the right
armrest. While lift function is enabled and in a RCL lockout
condition, pressing and releasing the Boom Up Bypass
Switch will enable boom lift up.
The following indicators illuminate to indicate the limiter is
bypassed:
•
Bypass 2 Pressed indicator is on (only when switch is
pressed)
•
Bypass 2 Active indicator is on
•
RCL Lockout LED is on (only when capacity is greater
than 100%)
For CE certified cranes only, the speed of the boom up
function is reduced by 50% when actuated. For non-CE
Certified cranes, the boom up function operates at normal
speed when actuated.
The boom up function lockout is bypassed until one of the
following occurs:
•
Boom Up Bypass switch is again pressed and released
while joysticks are in neutral position
•
Boom up joystick is in neutral position for 10 seconds,
and load is greater than 90% capacity and less than or
equal to 100% capacity
•
Load is reduced to less than 90% of capacity
Lift Function Enable Switch
The Lift Function Enable switch (5) Figure 3-6 is a
momentary switch that enables boom up and boom down.
Jog Dial
The Jog Dial Control (6) (Figure 3-6) is located on the right
arm rest. It selects and chooses functions on the screen(s) to
navigate the Crane Control System.
Outrigger Function Enable Switch
The Outrigger Function Enable Switch (7) Figure 3-6 allows
the operator to switch between extension/retraction of
outriggers and raising/lowering of the jacks. Press and hold
switch to force the lower screen display to change to the
outrigger page.
Differential Lock On/Off Switch (Optional)
The Differential Lock Switch (8) (Figure 3-6) is located on the
left arm rest. It engages the differential lock function for
additional traction when Four Wheel Drive is selected. It can
be activated for a maximum of 30 seconds at a time.
NOTE:
Differential lock only operates when crane is in
4WD mode.
Rear Steer Switch
The Rear Steer Control Switch (9) (Figure 3-6) is a three-
position, spring centered to off, rocker switch, located on the
left armrest. Press bottom of switch to actuate a control valve
to turn rear wheels to the left, causing crane to turn to the
DANGER
Crushing Hazard!
Death or serious injury could result from being crushed by
moving machinery.
Before actuating swing or other functions, sound horn and
verify all personnel are clear of rotating and moving parts.
Содержание Grove GRT880
Страница 1: ...Operator Manual Grove GRT880 8968 ...
Страница 4: ...THIS PAGE BLANK ...
Страница 10: ...TABLE OF CONTENTS GRT880 TOC 6 THIS PAGE BLANK ...
Страница 16: ...INTRODUCTION GRT880 OPERATOR MANUAL 1 6 Published 3 25 2020 Control 643 04 THIS PAGE BLANK ...
Страница 54: ...SAFETY INFORMATION GRT880 OPERATOR MANUAL 2 38 Published 3 25 2020 Control 643 04 8496 3 FIGURE 2 10 ...
Страница 166: ...SET UP AND INSTALLATION GRT880 OPERATOR MANUAL 4 24 Published 3 25 2020 Control 643 04 THIS PAGE BLANK ...
Страница 198: ...5 32 Published 3 25 2020 Control 643 04 MAINTENANCE AND LUBRICATION GRT880 OPERATOR MANUAL THIS PAGE BLANK ...
Страница 200: ...OPERATOR MANUAL GRT880 6 2 THIS PAGE BLANK ...
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