3M DBI-SALA 8518567 Handbuch Seite 15

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If the cranking tension eases during lowering, the person or material being lowered has reached a work
level or obstruction. Do not continue cranking without communicating with the person or checking the
material being lowered. Always keep the cable tension firm. Slack cable could cause a free fall.
While a worker is suspended, maintain the lifeline angle at a maximum of 5 degrees from vertical. The worker can be
seriously injured in a swing fall at more than 5 degrees. If the worker is not suspended and there is no chance of a fall,
the attendant may pay out sufficient line [maximum of 2 ft. (0.6 m)] so the worker can work comfortably. The attendant
should hold the line so there is always a slight tension. Maintain constant communication between the worker and the
attendant.
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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 ensures 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.
3.7 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.
3.8 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.
3.9 LEFT HAND RETRIEVE: The Digital Winch can be adjusted to work as a left hand retrieve. To make this adjustment,
remove the cable retention spring and attach it to the hole on the other end of the mounting plate using the same
hardware. Remove the carrying handle by removing the two screws attaching it to the Winch and replace it on the other
end of the Winch. Use a removable thread lock such as Loctite 242 to secure all fasteners. The Winch will now mount on
mounting brackets with the handle on the left side of the Winch.
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The cable will feed off the top of the drum in the left hand configuration, changing the moment load
requirements. See Table 1.
3.10 ROPE INSTALLATION: The Continuous Feed Winch can accomodate 1/2 in. (12 mm) diameter kernmantle rope of varied
lengths. Installation procedures will vary based on whether the rope is terminated with a snap hook on one end.
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After feeding the rope into the Continuous Feed Winch, it may be necessary to apply tension to the free
end of the rope while raising a load to fully seat the rope in the Drum.
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Always ensure there is enough length in the rope to safely operate the Winch without running out of
rope length.
WITHOUT SNAP HOOK: Rope without snap hook can be fed into the Continuous Feed Winch from either end depending
on the amount of rope used:
INSTALLING FROM THE BEGINNING OF THE ROPE: See Figure 13.
Step 1: Secure the Continuous Feed Winch to proper anchorage (tripod leg, davit arm, etc.).
Step 2: Insert the beginning of the rope under the Spacer (13.1A) and between the Drum and Upper Roller (13.1B).
Step 3: Gently guide the rope in the Winch while turning the Crank Handle counter-clockwise. As the rope passes through
the Winch (Figure 13.2), ensure the rope exits the Winch over the Spacer (13.2A) and under the large Top Pulley (13.2B).
Guiding the rope in front of the Top Pulley may be necessary.
Step 4: Continue cranking the handle and route the rope end over the davit system pulley or cable guide.
INSTALLING FROM THE END OF THE ROPE: See Figure 14.
Step 1:Secure the Continuous Feed Winch to proper anchorage (tripod leg, davit arm, etc.).
Step 2: Insert the end of the rope above the Spacer (14.1A) and between the Drum and large Top Pulley (14.1B).
Step 3:Gently guide the rope in the Winch while turning the Crank Handle clockwise. As the rope passes through the
Winch (Figure 14.2), ensure the end of the rope exits the Winch under the Spacer (14.2A) and on top of the Upper Roller
(14.2B). Guiding the rope in front of the Spacer (14.1A) may be necessary.
Step 4: Continue cranking the Crank Handle until the rope drapes over the Upper Roller and hangs down from the Winch.
3.12 INSTALLING ROPE WITH A SNAP HOOK: When installing rope terminated with a snap hook on one end, the rope
should be correctly route over any anchorage structure (e.g., pulley, roller) and the un-terminated end fed through the
Continuous Feed Winch in the same manner as for "Installing from the End of the Rope".
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