Elliott Digger Derrick, Руководство по эксплуатации и техническому обслуживанию, Страница: 61 / 376

On-Site Setup EEC-0024
V1.2
On-Site Setup
J. Do not side load the boom. Side loading can result in sudden structural failure or
tipping. Side loading occurs when:

Rapidly starting and stopping swing operations, operating out of level,
dragging or pulling loads sideways or operating in high winds.
K. Always position the boom head and loadline directly over the load before lifting and
lift slowly to avoid swinging the load. Never drag a load or push down with the boom.
When at or near maximum rated load tighten the loadline with the winch and then
boom the load off the ground to keep the load from swinging to an increased radius
due to boom deflection.
L. Always remember the load lifted includes the load weight, the hook block/headache
ball weight, slings, and applicable options on the boom. When operating between
boom lengths or radii on the load rating chart, use the next lower rated capacity.
M. Keep the load as close to the ground as possible.
N. Do not allow personnel lifts in wind speeds exceeding 20 miles per hour (32
kilometers per hour) at the raised platform height when the platform is attached to
the main boom. Do not allow personnel lifts during electric storms, snow, ice, sleet,
or other adverse weather conditions that could affect the safety of personnel.
Terminate personnel-lifting operations if adverse conditions develop during the lift.
Winds aloft can be much stronger than at the ground.
O. Use multi-part rope reeving when required. Keep at least five full wraps of rope on
the winch drum at all times. In some multi-parted cases, the hook block cannot be
lowered to the ground if the boom tip is too high before all rope is unspooled from
the winch.
P. Always keep space between the hook block and boom head when winching up or
extending the boom to avoid two-blocking. Do not rely on the two-block system to
eliminate two blocking.
Q. Do not allow anyone to ride the loadline, hook or load.
R. Only use Elliott approved personnel baskets attached to the boom or jib for lifting
personnel.
S. Do not exceed 80 percent of the crane rating when using a clam bucket.
T. Do not operate the crane if the anti-two block safety system is inoperative.