ENGLISH – 5
3.2.1 Product durability
The product’s durability is its average economic life value and is
strongly inuenced by the degree of severity of the manoeuvres:
in other words, the sum of all factors that contribute to product
wear.
To estimate the durability of your automated device, proceed
as follows:
1. add the values of the items in “Table 1” relative to the
system’s conditions
2. in the graph shown in “Figure 4”, from the value obtained
above, trace a vertical line until it intersects the curve;
from this point trace a horizontal line until it intersects the
line of the “manoeuvre cycles”. The value obtained is the
estimated lifetime of your product.
The durability values shown in the graph can only be obtained if
the maintenance schedule is strictly observed – see the “PROD-
UCT MAINTENANCE” chapter. The durability is estimated on
the basis of the design calculations and the results of tests ef-
fected on prototypes. Being an estimate, therefore, it offers no
explicit guarantee of the product’s actual useful life.
Example of lifetime calculation: automation of a gate with
a 1.3 m-long leaf weighing 180 kg, for example with a solid
leaf.
“Table 1” shows the “severity indices” for this type of installa-
tion: 15% (“Door length”), 30% (“Door weight”) and 15% (“Solid
leaf”).
These indicators must be added together to obtain the overall
severity index, which in this case is 60%. With the value iden-
tied (60%), look at the horizontal axis of the graph (“severity
index”) and identify the value corresponding to the number of
“manoeuvre cycles” that the product can perform throughout its
lifetime – roughly 100,000 cycles.
Table 1
PRODUCT DURABILITY
Severity index
Leaf length
< 1,0 m
1,0 - 1,5 m
1,5 - 2,4 m
0%
15%
20%
Leaf weight
< 100 kg
100 - 150 kg
150 - 250 kg
0%
20%
30%
Ambient temperature greater than
40°C or below 0°C, or humidity greater
than 80%
20%
Solid leaf
15%
Installation in windy areas
15%
Note The data refers to a properly balanced sectional door in
good working order.
50000
100000
150000
200000
250000
To Next Page
Loading...
Need help?
General
