Greer Company
Greer Company
Greer Company
Greer Company
Crane Systems
1918 EAST GLENWOOD PLACE, SANTA ANA CA 92705
Tel:(714) 259-9702 Fax:(714) 259-7626
MicroGuard
424 Operation/Troubleshooting Manual Horizontal Display Hydraulic Cranes
Page
4
of
52
W424103 REV A 02/13/01
MICROGUARD
424 SYSTEM DESCRIPTION
This manual describes the function and operation of the MicroGuard
424 Rated Capacity Indicator (RCI)
System for telescopic boom cranes. The MicroGuard
424 System is intended to aid the crane operator in
efficient crane operation by continuously monitoring the load and warning of an approach to an overload or a
two-block condition. This System, which monitors crane functions by means of high accuracy sensors,
continuously compares the load suspended below the boom head with data from a copy of the crane capacity
chart, stored in the computer memory. If an overload is approached, the MicroGuard
424 System warns the
operator by means of audible and visual alarms and can be configured to cause function kick-out.
The MicroGuard
424 indicator provides the operator with a continuous display of:
♦
Rated
Capacity
♦
Actual
Load
♦
Percentage of Rated Capacity
♦
Radius of the Load
♦
Angle of the Main Boom
♦
Working
Area
♦
Crane
Configuration
And by means of alternate display push buttons, it provides the operator with:
♦
Length of the Main Boom
♦
Height of the Boom Head
On-screen messages provide the operator with visual indications of the various alarms, which may occur
during normal operation of the MicroGuard
424 System. These values are displayed on the left and upper
right display. The lower right display gives information about the currently selected crane configuration.
IN FO RM A TIO N
TEST
W
M A X
W
100%
M icroG uard 424
C RA N E
SET U P
STO W ED
D ED U C T
W O RK IN G
A REA
D ED U C T
EREC TED STO W ED
SELEC T
V IEW
SET
C LEA R
D O W N
U P
C O N TRA ST
O PERA TO R A LA RM S