3M DBI Sala Rollgliss R550 User Instructions page 13

3. Descend to safety: Release the free end of the lifeline to initiate descent. Descent speed will be automatically
controlled to a rate described in Table 1 by the R550 Device's centrifugal brake. Descent may be slowed, interrupted
or prevented by using the following methods (see Figure 10):
1: Slow or interrupt descent by firmly grasping the free end of the Lifeline (A).
2:
Use the Pigtail (B) while firmly grasping the free end of the Lifeline (A) to provide additional descent
control.
3: Prevent unintentional descent by securing the free end of the Lifeline (A) with the Pigtail (B) and Cam Cleats
(C). Bend your knees to prepare for landing. After landing, disconnect the lifeline from the body support.
;
The R550 Device may become hot during use which could injure the user if parts other than those used to
control the descent are touched. Use beyond the specified load and descent length limits may generate excessive
heat which could damage the descent line.
4. Prepare for the Next Descent: After use of the R550 Device, the lifeline must be pulled through the device as
needed to position a lifeline end and Snap Hook adjacent to the next person to descend.
REMoTE AssisTED REsCUE: See Figure 9.1 for reference. The R550 Device is equipped with a Rescue Hub (RH) which
can be used in remote assisted rescues to raise the fall victim to permit removal of their fall arrest subsystem (lanyard,
etc.) prior to descent to safety. Procedures are as follows:
;
During a rescue, there should be direct or indirect visual contact or some other means of communication with the fall victim
at all times during the rescue process.
1. Lower or Raise one End of the Lifeline to the Victim: Pull the lifeline (L) through the R550 Device (A) as needed
until the snap hook (B) on one end of the lifeline is adjacent to the desired connection point on the victim's body
support (C).
2. Connect to the Victim's Full Body Harness or other Body support: Connect the snap hook (B) on the rescue
end of the lifeline to the sternal D-ring or dorsal D-ring (C) (also see Figure 14 for D-ring locations). Ensure the
D-ring is positioned to hold the user upright.
;
In the event the connection point on the victim's body support is not within reach, the rope grab accessory (Figure 9.3, D)
can be attached upside down (
be attached to the eye (E) on the rope grab (D) and the rescue hub (RH) can be used to raise the victim to safety or to a point
where their initial fall protection system can be released to allow lowering the victim to safety.
Raise the Victim to Disconnect the Fall Arrest subsystem: Rotate the Rescue Hub (RH) to raise the victim's
3.
weight from the fall arrest subsystem and onto the R550 Device. Secure the Free End of the lifeline with the
R550 Device's Pigtail and Cam Cleats to prevent unintentional descent (see Figure 10). Disconnect the Victim's fall
arrest subsystem (lanyard, etc.).
• Alternate option (Figure 11): The R550 Device is also configured to allow a Power Drill (minimum 0.5 in.
chuck and 400 lbf-in. torque) to be attached to the center of the Rescue Hub which can be used in remote
assisted rescues to raise the fall victim. (See Table 1 for an example of lifting distances.) Attach the Power Drill
directly to the shaft at the center of the Rescue Hub (see Figure 10). Use the attached Power Drill to rotate the
Rescue Hub to raise the victim's weight from the fall arrest subsystem and onto the R550 Device. Secure the
Free End of the lifeline with the R550 Device's Pigtail and Cam Cleats to prevent unintentional descent (see
Figure 10). Detach the Power Drill by lowering the victim's weight onto the unit's Pigtail and Cam Cleats and
then releasing the Power Drill from the center of the Rescue Hub. Once the Powered Drill is removed, disconnect
the victim's fall arrest subsystem (lanyard, etc.).
Table 1: Single Battery Lifting Distances in either direction for DeWalt 18V Drill (Model DCD990M2)
220 lb. (100 kg) Load
310 lb. (140 kg) Load
* Lifting distance based on full battery charge, ambient temperature of 72°F (22°C).
** High speeds with high loads not recommended.
;
Power Drill lifting capabilities will vary with victim load, battery charge, drill model, and environmental
conditions. The lowest drill speed setting is recommended to maximize battery life and to reduce the risk of
damaging the drill or the R550 Descender. Loads greater than 310 lb. (140 kg) should not be lifted with the Power
Drill option. Lifting in reverse direction will typically decrease the lifting distance capacity of a single battery charge.
Prepare the Lifeline for Descent: Prior to descent, the section of lifeline between the user and the R550 Device
4.
must be tightened to remove any slack. Tighten the lifeline by pulling on the free end of the lifeline until slack
between the user and R550 Device is removed. Once the lifeline is taut, hold the free end of the lifeline tightly until
descent is initiated.
5. Descend to safety: Release the free end of the lifeline to initiate descent. Descent speed will be automatically
controlled to a rate described in Table 1 by the R550 Device's centrifugal brake. Descent may be interrupted by firmly
grasping the free end of the lifeline (see Figure 10). Bend your knees to prepare for landing. After landing, disconnect
the lifeline from the body support. Record all descents in the Descent Log (Table 3).
) on the victim's lanyard (VL) and locked in place. The snap hook on the R550 lifeline (L) can
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Low Speed
250 ft. (76 m)*
200 ft. (61 m)*
13
Medium Speed
250 ft. (76 m)*
150 ft. (46 m)*
High Speed
175 ft. (53 m)*
NA**