Broderson IC-400-3B, Operation And Maintenance Manual

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Downhaul Weight and Hook:
Downhaul weight and 14,000-pound (6350 kg) rated swivel hook to use with wedge
socket on 5/8-inch (16 mm) load line. Specially designed to work with the anti-two-block
system and to clamp the dead end of the rope. Weighs 180 pounds (82 kg)
Anti-Two-Block Device:
Prevents damage to hoist rope and/or machine components from accidentally pulling
sheave block or downhaul weight against boom tip. Consists of trip arm at boom tip,
which is moved upward by sheave block or downhaul weight as hook approaches boom
tip. Trip arm actuates electric switch, which is connected through cable reel mounted on
boom to solenoid dump valve control system. This system will stop HOIST RAISE,
TELESCOPE EXTEND, BOOM LOWER, SWING LEFT and SWING RIGHT circuits.
No other circuits are affected. These circuits are returned to normal operation by
operating the HOIST LOWER or TELESCOPE RETRACT control.
Rated Capacity Limiter:
Operational aid that warns operator of impending overload with audible and visual
signals. Has read-outs for load, boom angle, boom length and load radius. In the event
of an overload, it blocks the following boom functions: HOIST RAISE, TELESCOPE
EXTEND, BOOM LOWER, SWING LEFT and SWING RIGHT. These circuits are
returned to normal by lowering load to a safe resting place with hoist, or by retracting or
raising boom to a shorter load radius. There is an override system on the display of the
RCL System in the Operator’s Compartment.
Four-Part-Line Sheave Block:
Double sheave block for 4-part-line requirements. 12-inch (305 mm) OD sheaves for
5/8-inch (16 mm) diameter wire rope. Swivel hook with safety latch. 470-pound (214 kg)
weight provides positive overhaul. Includes bar on top to actuate trip arm of Anti-Two-
Block Device.
Optional Boom Attachments:
Boom Extension: 20-foot (6.1 m) Offset:
Provides 20 feet (6.1 m) of additional length for lifting loads with load line. Boom
extension may be stowed alongside base boom section when not in use. Tip sheave,
attaching brackets and pins are included. Deduct 500 pounds (220kg) from Capacity
Chart when boom extension is in the stowed position. Includes trip arm for Anti-Two-
Block Device. Boom extension will tilt through 3 positions: in-line, 15 degree offset and
30 degree offset. Net Weight: 775 pounds (350 kg)
*** Specifications subject to change without notice ***