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While a worker is suspended
maintain the swing angle at
less than 5°. The worker can be
seriously injured in a swing fall
at more than 5° (see Figure 8).
If the worker is not suspended
and there is no chance of a
fall. The attendant may pay
out sufficient line [2 ft. max.
(.6 m)] so the worker can work
comfortably. The attendant
should hold the line so there is
always a slight tension on it.
Maintain constant
communication between the worker and the attendant.
WARNING:
The last 10 ft (3 m)of the lifeline has a red marker and
should not be unwound from the drum. This length provides the
required wrap on the drum to properly anchor the lifeline and insures
that the lifeline wrap direction is correct. Stop extending the lifeline
when you see the red marker. The lifeline must wind onto the drum
by turning the crank handle in the “raise” (counterclockwise) direction
only. Check periodically to see that the lifeline is winding evenly on the
drum. Use gloves when handling the lifeline.
3.9 RETRIEVING A WORKER:
Communicate with the worker
when preparing to retrieve them and maintain communication
throughout the procedure. Place the crank handle in the 4:1 or 9:1
drive hub as appropriate to keep the turning force in a comfortable
range. Retract the lifeline and retrieve the worker. Maintain an
even retrieval rate.
If the winch handle turning load suddenly increases, stop and
investigate. Determine the cause and correct the problem before
continuing.
Upon retrieval, support the load or worker and disconnect the
lifeline.
3.10 INERTIAL BRAKE:
The Digital Winch is designed with a
constantly engaged brake that will hold a suspended load
whenever the crank handle is released. The brake is composed of
three independent pawls. All three pawls would have to become
inoperable for the primary brake to fail. The winch has a secondary
inertia brake in case the primary brake should fail. If the primary
brake failed, the winch would free-wheel until the inertia brake
engaged and stopped the cable. No more than 3 ft. (1 m) of cable
deploys before the inertia brake engages.
Figure 8 - Swing Angle
5° Max.
5° Max.
Lifeline
Anchor
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