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TABLE 15
Severity index
< 1,0 m
1,0 - 1,5 m
1,5 - 2,0 m
< 100 kg
100 - 150 kg
150 - 200 kg
Leaf length
Leaf weight
Ambient temperature above 40°C or below 0°C or humidity over 80%
Solid leaf
Installation in windy zone
Note – The data refer to a balanced sectional door in perfect maintenance conditions
-
15%
20%
-
20%
30%
20%
15%
15%
The lifetime is the average economic duration of the product. The value of lifeti-
me is strongly influenced by the intensity of the manoeuvres performed by the
automation. i.e. the sum of all factors that contribute to product wear (see Table
15).
To establish the probable lifetime of your automation, proceed as follows:
01. Calculate the severity index
by adding all percentages of the items specified
in Table 15;
02. In Graph 3 from the value obtained above, trace vertical line until it inter-
sects 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 estimation of lifetime is made on the basis of design calculations and the
results of tests performed on prototypes. As it is only an estimation, it does not
represent any form of guarantee on the effective lifetime of the product.
Example of calculating the lifetime of a POP gearmotor (refer to Table 15
and Graph 3):
- leaf length = 1,3 m (severity index: 15%);
- leaf weight: 180 Kg m (severity index: 30%);
- solid leaf (severity index: 15%);
Total severity index
= 60%;
Estimated lifetime = 100.000 manoeuvre cycles
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