ELECTRICAL SYSTEM 2250 SERVICE/MAINTENANCE MANUAL
3-24
Published 07-19-16, Control # 249-01
* = Optional
* LUFFING JIB MAX DOWN The luffing jib stops lowering when the boom-
to-jib angle is 60° (70° on #44 luffing jib).
Raise the luffing jib.
EQUALIZER BOOM STOP The boom hoist stops hoisting when the
equalizer is pulled back against the stops on
the gantry and when the physical boom stops
are within 25 mm (1 in) of bottoming out.
Pay out (lower) the boom hoist wire
rope.
SETUP MODE ENGAGED All functions are operable. For crane setup
only, the travel operates at 1/2 speed and the
automatic boom stop is disabled.
Turn off the setup selector. (Select and
confirm the desired operating mode.)
* JIB BELOW HORIZONTAL The luffing jib is operable. See Capacity
Charts in Section 2 of the Operator Manual
for luffing jib minimum operating angles.
Raise the luffing jib above horizontal.
* CTWT OFF RING Alert only. Does not stop the boom hoist or
load drum operation.
The crane’s capacity has been
exceeded. Stop lowering the boom or
hoisting the load immediately. Land the
load slowly and smoothly.
CONFIRM MODE The load drums are inoperable until the mode
in effect is confirmed or another mode is
selected and confirmed.
Confirm the mode in effect or select and
confirm a different mode.
DRUM AIR VALVES The selected drum air pressure switch is
open for more than 4 seconds.
The brakes and clutches of all the
drums on the main shaft are applied.
The fault cannot be cleared until the
crane is shutdown and restarted.
Display Reading Function Response Corrective Action
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