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Chapter 8 "Technical specifications" also provides an estimate of "durability" i.e. average product lifetime. The value is strongly influenced by
the stress factors involved in the manoeuvre, i.e. all factors that contribute to wear. To make this estimate, the total of all the gravity ratings
in Table 5 must be calculated, for subsequent verification of the estimated feasibility in the graph. For example, TN2010 on a door of 130 Kg,
which requires a force of 180Nm to move the leaf, equipped with photocells and no other factors of fatigue, obtains a gravity rating of 60%
(30+20+10). The estimated durability on the graph is therefore 18,000 cycles.
Note that the estimate of durability is conducted on the basis of design calculations and results of tests performed on prototypes; as this is
an estimate it does not constitute any form of guarantee on the effective lifetime of the product.
Table 5: Estimate of durability in relation to the manoeuvre gravity rating
Gravity rating %
Leaf weight Kg
Up to 100
100 ÷ 180
180 ÷ 230
Over 230
Force required to move leaf (N)
Up to 160
160 ÷ 240
240 ÷ 290
290 ÷ 350
Other factors of fatigue
(to be considered if the probability of occurrence exceeds 10%)
Ambient temperature over 40°C or
below 0°C or humidity over 80%
Presence of dust or sand
Presence of salt water
Interruption of manoeuvre by Photo
Interruption of manoeuvre by Stop
Speed over "L4 high"
Total gravity rating %
2.2) Product component check
• Check the condition of the packaging;
• unpack the product and ensure presence of (Figure 2):
2
TN2010 TN2010
+
TN2020
20
10
30
20
40
30
60
50
10
5
20
15
40
30
-
50
10
10
15
15
20
20
10
10
20
20
15
15
50000
45000
40000
35000
30000
25000
20000
15000
10000
5000
0
0
10
20
30
40
Gravity rating %
N° PIECES TN2010
A
1
B
2
C
2
D
2
E
2
F
2
G
1
50
60
70
80
90
100
TEN Gearmotor
M6 nuts
M8 nuts
Threaded stud bolts M6x14
Ø8 washers
M8x110 screws
Release rod
GB
5
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