3M 3306010, Инструкция пользователя

Страница: 9 / 64

9
Table 1 – Specifications
Performance Specifications:
Minimum Descent Load: 59 kg (130 lbs)
Maximum Allowed Descent Height:
1 Person: 500 m when system length permits
2 Persons: 175 m when system length permits
Nominal Descent Speed:
1 Person: 0.6 m/s - 0.9 m/s
2 Persons: 0.6 m/s - 1.2 m/s
Maximum Consecutive Descents:
The Maximum Number of Consecutive Descents is equal to the Total
Cumulative Descent Distance divided by the Descent Height. Total
Cumulative Descent Distances for various weight limitations are as
follows:
2 Persons up to 282 kg 350 m
1 Person to 141 kg 5,500 m
1 Person to 100 kg 7,755 m
1 Person to 75 kg 11,000 m
Descent Energy Rating:
The Descent Energy Rating of your R550 Rescue & Escape Device
is a calculable measure of wear on your device. Factors influencing
Descent Energy Rating include user weight, descent height, the
number of previous descents, and the number of simultaneous users.
The Descent Energy Rating is the Descent Energy Classification of
your R550 Rescue & Escape Device per the respective standard. If
your device exceeds this number, it must be removed from service
immediately and managed according to the specifics of Section 4.1.
The Maximum Descent Energy Rating of your R550 Rescue & Escape
Device is determined by the number of users and the applicable
standard for use:
Standard Number of
Simultaneous Users*
Descent Energy
Rating
ANSI Z359.4 One user 300,000 ft-lbs
(406,750 joules)
EN 341.1992
(Class A)
One user
5,531,700 ft-lbs
(7,500,000 joules)
EN 341.1992
(Class C)
Two users
368,700 ft-lbs
(500,000 joules)
;
*All users must weigh no more than 140 kg (310 lb.) each.
At any time, the Descent Energy Rating of your R550 Device must not
exceed this value. Descent Energy Rating can be calculated with the
following equation:
E = W x H x N
Where “E” is the Descent Energy Rating in foot-pounds (ft-lbs), “W”
is the User Weight in pounds (lbs), “H” is the Descent Height in feet
(ft), and “N” is the total number of descents your R550 Device has
experienced.
If, at any time, your R550 Device has a Descent Energy Rating (E)
equal to or greater than the Maximum Descent Energy Rating, it must
be removed from service immediately and marked “DO NOT USE”.
For metric units, the following equation should be used instead:
E = W x H x N x G
Where “E” is the Descent Energy Rating in Newton-meters (N-m),
“W” is the User Weight in kilograms (kg), “H” is the Descent Height in
meters (m), “N” is the total number of descents your R550 Device has
experienced, and “G” is the acceleration due to gravity (9.81 m/s
2
).