Broderson IC-20-1K, Operation And Maintenance Manual

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Main Hoist Rope:
Main hoist rope is
5/16
-inch (8 mm) diameter, Warrington-Seale
construction, 6x36 classification, IPS grade, IWRC core, RRL lay,
minimum breaking strength 9160 lbs (4155 kg), 80’ (24 m) long.
Weight per foot is 0.2 lbs (.3 kg per m). Note that rope weight is not
included in load calculations.
Boom Attachments:
Standard:
Anti-Two-Block Device :
Has electric solenoid dump valve, which prevents damage to hoist rope
and machine components from accidentally pulling load hook against
boom tip. This valve will dump the HOIST RAISE, TELESCOPE
EXTEND, and BOOM LOWER circuits. No other circuits are affected.
These circuits are returned to normal operations by operating the HOIST
LOWER or TELESCOPE RETRACT control. This system uses a trip arm
to activate switch.
Downhual and Sheave Block :
Includes downhaul weight and hook for single part line. Downhaul and
hook assembly weight is 40 pounds (18 kg). Downhaul is designed to
clamp dead end of rope. Also includes single sheave block for two-
part line requirements. Six-inch O.D. sheave for
5/16
-inch (8 mm)
diameter wire rope. Swivel hook with safety latch. Fifty pounds of
weight provides positive overhaul. Includes bar on top, to actuate anti-
two-block system.
Optional Boom Attachments :
7-Foot (2 m) Pin-On Jib:
Consists of jib with pair of tension bars, tip sheave, cable keeper, pins,
and jib attaching pins. Tension bars provide two positions, in-line and
30 degree offset. Net Weight: 97 pounds (44 kg)
Rated Capacity Limiter:
Operator's 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, the following
boom functions will have hydraulic flow dumped: HOIST RAISE,
TELESCOPE EXTEND, and BOOM LOWER. 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 also an override button on the RCL control panel and an override
switch on the upper dash panel. Net Weight: 30 pounds (14 kg)
Rated Light Bar:
Tri-color Light Bar indicating percentage of rated capacity utilized.
Includes audible alarm for overload or two-blocking. Requires RCL
option.